With the development of computer technology and the comprehensive development of system science, combined with computer technology, control technology, image technology, three-dimensional technology and other technological advances, derived a new science and technology? Computer simulation technology. The following is the computer simulation technology and application of undergraduate thesis that I have organized for you, for your reference.
Computer simulation technology and application of undergraduate thesis achemical computer simulation technology research
Abstract: At present, the computer has gradually been popularized to all aspects of life and production, and gradually be expanded to the chemical industry applications, computer simulation technology chemical industry applications have gradually been expanded to a certain special degree to promote the sustainable development of the chemical industry. To promote the sustainable development of the chemical industry. In this paper, the application of computer simulation technology in the chemical industry from the perspective of the advantages of the technology, as well as the necessity of its application, I hope to be able to bring some enlightenment to the relevant workers.
Keywords: computer simulation technology; chemical industry; application
With the gradual development of science and technology progress, the chemical industry facilities and equipment gradually tend to large-scale, complex development, automation level gradually increased, the operation requirements are more stringent. It is necessary for the relevant operators and technicians to gradually improve their business ability and level, not only to ensure that the production equipment can be stable and safe and long-term operation, but also need the relevant workers for the discovery of accidents to do as soon as possible to deal with the reasonable, in order to avoid some losses. In the chemical industry, the traditional training system is biased towards the master leading the apprentice to pass on the form, and the relevant staff for the ability to deal with the problem, usually rely on the accumulation of long time practice is the main thing, but also have the qualifications of the master will master the original unchanged to the apprentice. The way is more real, but by granting the training time and cycle limitations, the training content lacks richness, to some extent, may increase the time of the relevant workers on the job independently, not in line with the sustainable development of production technology and production plant renewal needs.
1 application of computer simulation technology importance
The chemical industry often need to be part of the specific engineering equipment and process to be operated, and then gradually in-depth to the post operator, and then through training, training is usually combined with the physical wall charts and miniature apparatus to pass out the knowledge of the teaching process is relatively boring. Physical wall charts and teaching aids based on practical factors and economic factors, and do not choose a large size, resulting in all training staff to master the relevant operations and principles in detail. Combined with 3D technology can make the equipment image more realistic, can do any rotation, so that the training staff can realize all-round observation process and equipment [1]. Combined with Flash technology to produce equipment animation effectively instead of wall charts, the dynamic demonstration of the equipment is more vivid image, to help the relevant personnel for the working principle of the equipment to be mastered, can be very good to drive the enthusiasm of the training staff. Moreover, the use of equipment is more convenient, the use of requirements can be well met.
2 based on computer simulation technology chemical data model
Combined with the computer to do simulation simulation, is the chemical process mathematics into the computer, followed by the computer to simulate the process and reflect. All the principles based on human factors change, can be obtained to match the reaction process and the reaction results of the change value. In general, it has the following advantages. First, friendly human-computer interaction interface. At present, many chemical industry simulation software design rules are based on Microsoft, so that the relevant workers can quickly get started and put into the relevant operation, so that the relevant personnel feel easy and convenient, to cultivate a strong interest in experiments, and fully mobilize the work of enthusiasm and motivation. Secondly, the performance of engineering equipment is more realistic [2]. To fully analyze the reaction process of chemical equipment, the establishment of a model to match it, by virtue of the experiment to reflect all the processes, the operation of the workers skilled and rapid mastery of operational skills is very favorable. In the following article, we list a model that is often involved in the chemical industry, and hope that it can be used as a reference for relevant operators. Computer simulation systems have many characteristics, such as repetition, complexity and more than one, in the early 1950s, the Western countries have been in the dynamic and static characteristics of computer simulation systems have been studied, and has made a very important impact. Simulation system of China's chemical industry has also carried out a series of design and research, but also limited to the scope of static research.
3 for the electronic digital aspects of the study
Based on the characteristics of the computer simulation system, it can be regarded as nonlinear in nature, and its relatively high order when the analytical methods and classical control theory, computer simulation in the study of the dynamic performance of chemical systems is very difficult [3]. In this paper, through the computer in the electronic digital computer system calculus equations, calculations, introduced in conjunction with the time-domain dynamic performance index system, which will eventually adjust the program out. First, the system is stable; second, in the numerical calculations, the input value of the system is equal to 0.0123; third, in the exclusion of interfering factors, put the chemical work in a normal state; fourth, the interference factors are taken into account in the case of various interfering factors are also dealt with as separate individuals. In this paper, by predicting the correction format, Euler's method is iterative differential equation numerical integration calculation.
4 computer simulation system improvement program
Currently, the chemical simulation system has a wide range of applications, but due to the operation of chemical equipment and larger processes are different, the current simulation software, simulation machines, better training of new employees can not be satisfied, therefore, the future of the new simulation technology and simulation software development space is still large [4]. In the future, it should be combined with automatic control theory, appropriate reference to the correction link can effectively improve the quality of the dynamic performance of the system, so that it has a high degree of stability and anti-interference ability. It can be connected to the input of the gas to simulate the differential and integral negative feedback link of the system, which will ultimately lead to a much better dynamic performance, and it is equivalent to the series of introduction and link. The results of our calculations can be seen, as long as the corresponding parameters are correctly selected to obtain beyond the expected results. The structure of the differential and integral part can be regarded as a kind of natural gas supply prognostic bridge, placed at the same speed as the pipeline temperature sensors have been transformed into a bridge with two arms, expressing a small time constant and a relatively long time constant. Simulation of the input structure of the system with negative feedback link to the system has better dynamic performance. Based on the theory of basic knowledge, the effect of the modified link on the control accuracy of the system, through the calculation results we can see that with careful selection of the component parameters, the achievement of the desired results is within reach. The most obvious feature we advocate for this program is its simplicity and ease of operation, in other words, as long as one of the sensors is connected to the conduit while this paper is connected in series and parallel on top of the same bridge arm. Connected to the input of the amplifier and the advanced network, combined with the principle of automatic control of linear systems to do the principle of advance correction, and the input resistance and capacitance of the amplifier to form an advanced network, can be very good to improve the dynamic quality of the system. Discussion of the above three improvement programs is based on the advanced theory as a basis, as can be seen by the calculation results, all three of them can basically improve the dynamic quality of the system. The first and the second kind of the system can also significantly improve the program to improve the anti-interference capability. And the improvement program of these classes is based on the premise of existing technology, there is no relatively easy to realize the obstacles. Of course, want to put them on the actual system references, it will take a long time.
5 Conclusion
At present, the computer simulation technology production and training aspects of the application of more, so focus on strengthening the simulation software and simulation machine development and design, computer simulation technology to further promote the technology to accelerate the deepening of the technology, so that the scope of its application and performance can be improved. The application of computer simulation technology to promote the further development of high technology, promote the accelerated development of science and technology, at the same time for the chemical industry to provide a broader space for development. In the future sustainable development, the chemical industry to grasp the application of computer simulation technology measures to win more revenue for the enterprise.
References:
[1] Yu Xiaohua. Automated logistics system design based on computer simulation technology[J]. Automation and Instrumentation,2014(12):66-67+70.
[2]Li Jing,Hou Qianqian,Tian Bin. Introduction to the application of computer simulation technology in China's public-railway intermodal logistics system[J]. Communication World,2014(22):3-4.
[3]Du Jing. Relevant research on computer simulation and emulation technology in logistics automation system[J]. Logistics Engineering and Management,2015(1):97-98.
[4]Zhao Ran,Zhu Xi. Discussion on the application of simulation technology in higher vocational computer network teaching[J]. Henan Science and Technology,2014(1):282.
Computer Simulation Technology and Application Undergraduate Thesis II《Computer Simulation Technology and Its Application 》
With the development of computer technology and the comprehensive development of system science, combined with the advancement of computer technology, control technology, image technology, three-dimensional technology and other technologies. Derived a new science and technology? Computer simulation technology. Computer simulation technology in recent years the continuous development, and scientists in many fields are joint computer machine simulation technology development, and achieved good results. This paper discusses the application of computer simulation technology by elaborating on the overview of computer simulation technology.
First, the definition of computer simulation technology
Computer simulation technology through the research of scientific research engineers and system operation and management personnel, the use of computer a variety of software to analyze, design, simulate the actual environment, simulation of scientific experiments of technology. Computer simulation technology than the real test more time-saving and labor-saving, greatly saving scientific research costs. So the computer simulation technology once launched, by people greatly like.
Second, the development of various stages of computer simulation technology and the trend of future development
Computer simulation technology according to the development of computers, graphic images, modeling, three-dimensional, systems and other technologies can be divided into the following four stages of development:
(1) model test stage
(2) digital simulation stage
(3) image-based simulation Stage
(4) virtual reality technology stage computer simulation technology in these four stages, the development of each stage of a variety of features and focus. Such as the model test stage is to focus on test modeling; digital simulation is the computer digital design; image-based simulation focus on the use of images to express the design; virtual reality technology using the characteristics of the setup equipped with three-dimensional technology, simulation technology is more realistic. With the development of society, the progress of computer network technology, combined with the needs of people's lives, computer simulation technology is more and more humanized. In the future, computer simulation technology will develop towards several trends: distributed, collaborative, immersive, network environment-based computer simulation technology. Such as the distribution of interactive simulation is the use of computer network technology around the scattered simulation experiments in tandem to build a website simulation of the experimental environment. Synergistic simulation is to establish a synergy with the production. Immersive simulation is to meet the requirements of vertical information sharing, making the data more intuitive, easier to analyze. Network environment type simulation is established in the virtual network simulation mode, this is more universal. The direction of the development of these computer simulation technology, from vertical and horizontal development, as for the multi-directional to meet the requirements of people more computer simulation technology, which also accelerates the promotion of computer simulation technology.
Third, the steps of computer simulation and technology core
The steps of computer simulation technology research and development can be divided into three major steps: one is to establish a mathematical model, the second is the data model of the programmed three is the simulation experiment. The first step is to establish a mathematical model, that is, the scientific research which is analyzed through a variety of studies, to establish a specific data model with a margin to carry out object research. The second step of data model programming, that is, the data model is digitized and programmed. The third step of simulation experiment is to carry out simulation experiment on the built model to form a systematic simulation mode. After these three steps, you can get the desired simulation data. The key technologies of computer simulation are object-oriented simulation, distributed interactive simulation, intelligent simulation of three major key technologies. These three key technologies are vertically and horizontally interrelated, and the relationship is progressive. Intelligent simulation will be the future development trend, better meet people's needs.
Fourth, the application of computer simulation technology
Computer simulation technology due to its superiority and high-performance diversity, more and more favored by all walks of life, and applied to the actual production. Such as aerospace, navigation, enterprise production, geographic exploration, transportation, agriculture, education, military defense, and various scientific research and design, etc., are applied to computer simulation technology. We can use computer simulation technology according to the function and scope of the use of computer simulation technology is divided into the application of computer simulation technology: systematic research and development and theoretical research applications, product research and development applications, personnel training applications.
(a) the system of research and development and theoretical research applications
In the development and research of new projects are needed to analyze a variety of data, and computer simulation technology can be applied in the research and development of these projects, through the simulation modeling, it will be able to study the various systems, as well as theoretical analysis, the collection of a variety of data. Such as: the research and application of aerospace technology, mainly on rockets, spacecraft and other simulation experiments to collect the required data. Military military field applications, more advanced military equipment, field environment for modeling experiments. () product research and development applications computer simulation technology used in enterprise product production or a variety of industrial research and development production, such as industrial manufacturing industry simulation, according to the products produced by the enterprise, the establishment of product modeling, measurement of product functionality, appearance whether it can meet the demand. Simulation in the medical field, to medical equipment or simulation of medical tests. These skills save R & D costs, saving labor and material resources. And also improve the overall skill level of scientific and technical personnel.
(C) talent cultivation and education applications
Computer simulation in the field of training and education can be applied in many ways, for example, in the school's practical teaching, you can simulate the virtual business apprenticeship, enriching the content of the practical teaching, improve the efficiency, energy saving. In such as astronaut training and other simulation experiments, on the one hand, to ensure safety, but also reduces the cost, to achieve the desired results. Computer simulation technology is still in further development, in the future, computer simulation technology in more fields to be applied.
V. Summary
With the redevelopment of computer technology, network technology, system knowledge science, control technology, computer simulation of new technologies will develop by leaps and bounds. And computer simulation technology hides a huge benefit, no matter for which line of business, the future of computer simulation technology will reach industrialization, which makes the computer simulation technology in various fields more and more widely used for the development of mankind, and opened a whole new chapter.
Computer simulation technology and application of undergraduate thesis threeThe application of computer simulation technology in automotive theory teaching
1 course Teaching methodology to explore
Automotive theory is a professional course involving more content, theoretical, comprehensive multi-disciplinary, different from the other automotive professional courses then
The automotive theory is a more involved content, theoretical, integrated multiple disciplines, unlike other automotive professional courses so The students generally reflect that it is difficult to master. According to the teaching content of the course and its characteristics, the selection of suitable teaching methods is the key to improve the teaching effect. For the basic concepts, working principles, force analysis diagrams, curve diagrams, data tables and some conclusive knowledge, you can use multimedia text, charts and animations and other methods to display, not only to achieve the effect of intuitive and clear, but also to improve teaching efficiency. Involving formula derivation and force analysis content, it is appropriate to use the traditional blackboard board teaching methods. Because the traditional blackboard deduction process is more likely to guide students to logical thinking and abstract thinking, the conclusions obtained will be more impressive. For more complex, abstract teaching content, you can apply the computer simulation platform through the animation video, as well as on-site access to the model for analysis and other ways to assist in teaching, will be visualized to improve the students' perceptual understanding, to avoid the teacher empty statement, students imagine to understand the situation, thereby improving the teaching effect. For automotive performance experiments, especially automotive maneuvering stability and smoothness experiments, due to the limitations of the experimental conditions, most of which can not be carried out. Through the application of computer simulation technology, some virtual simulation experiments can be designed and implemented, thus making up for the lack of experimental teaching content. Automotive theory courses in addition to theoretical teaching and experimental teaching content, generally also comes with after-school homework, extracurricular homework, classroom presentations and follow-up automotive theory course design, etc., due to the consistency of the after-school topics, a single project task, the available computing tools are also relatively limited (commonly used Excel or Matlab), often resulting in a large number of plagiarism, is not conducive to the cultivation of students' abilities and fair evaluation. Project-driven integration of a variety of computer simulation techniques into practical teaching sessions can be considered to deepen students' understanding of theoretical knowledge and stimulate interest in learning and research. In the teaching process, the need to choose the appropriate teaching methods according to the specific teaching content, combined with traditional teaching methods and modern teaching methods, so that they can play their respective advantages in order to achieve better teaching results.
2 computer simulation technology application methods
In the automotive theory teaching, the reasonable application of computer simulation technology will be the teaching of the course and the learning effect of the students, the follow-up course design and graduation design, as well as the training of students' engineering software application ability to bring great help.
2.1 Establishment of automotive performance simulation and analysis of teaching models
2.2 Advantages of various simulation software in professional teaching
According to the professional advantages of different computer simulation software, it is reasonably applied in the teaching of automobile theory, so that the analysis of complex problems becomes intuitive, clear, and can stimulate the students' interest in learning. Matlab software is a common tool for automobile performance calculation, with powerful numerical calculation and graphical functions, which can easily complete the calculation of various automobile performance. Conveniently complete a variety of automotive performance calculations; at the same time, the use of Matlab's numerical calculation functions and Simulink module, you can simulate and analyze and solve complex processes in automotive theory. The results of these calculations and analyses can be presented to students through the visualization provided by Matlab, which helps to clearly explain the abstract concepts. [4] Vehicle performance simulation software CRUISE is a whole-vehicle performance simulation software specially designed for automotive driveline matching. The modular modeling method divides the whole vehicle into automotive modules such as engine, clutch, transmission, main gearbox, etc., and at the same time, it is equipped with calculation tasks such as cyclic driving conditions, hill-climbing performance analysis, steady-state driving performance analysis, etc., which can conveniently carry out the calculation of dynamics and economy of the whole vehicle of traditional automobiles and new energy automobiles, as well as the matching analysis of the parameters of the power unit. Unlike Matlab software, this software is convenient for modeling, and different module parameters and calculation tasks can be set up in detail and conveniently, which is closer to the actual model of the car, and the calculation results are more accurate. The software has the professionalism and flexibility in automotive powertrain simulation that other simulation software can not match, and it is widely used in the domestic and international automotive industry.ADAMS is a multi-body dynamics simulation software for mechanical systems that is widely used in the automotive industry, of which the ADAMS/CAR module is a vehicle design software package that can quickly build a high-precision virtual prototype model of the entire vehicle, and intuitively reproduce the vehicle model through high-speed animation. Through high-speed animation, it intuitively reproduces the dynamic response of the vehicle under various virtual experimental conditions, greatly reducing the dependence on physical prototypes. In automotive theory teaching, ADAMS/CAR can be realized in the virtual environment suspension, steering system motion analysis, but also can be carried out in the car handling stability and smoothness and other related simulation experiments, to solve the objective conditions due to the limitations of the experimental teaching process can not be carried out. In addition, in the field of automotive simulation technology research, there are ADVISOR, CarSim/TruckSim and other engineering software, by virtue of its own advantages and characteristics, the application is also more extensive.2.3 The role of computer simulation technology in the project-driven practical teaching mode At present, most of the automotive theory teaching after-school assignments, extracurricular assignments and automotive theory course design, Matlab software is more widely used. software is more widely used. Programming calculations through Matlab software can analyze a number of automotive performance, but the application of Matlab makes students focus too much on formula calculations and programming, which has certain limitations. Moreover, single topic tasks are often accompanied by a lot of plagiarism, which is not conducive to independent problem solving and fair evaluation. The above problems can be solved by applying different computer simulation software to each practical teaching link of automobile theory driven by multiple types of subject projects. [5] The implementation process, the need to build a number of fit the actual use of automotive performance of the subject of the project, and the application of the same type of simulation software for group learning and guidance, so that students in the project learning and completion of the process of deepening the understanding of the theoretical knowledge and the practical application of stimulate the students to analyze the problem of the actual problem, problem-solving ability.
3 computer simulation technology application examples
3.1 Matlab software application examples
The dynamics of the car is the most basic and important performance of a variety of automotive performance. Among them, when drawing a curve diagram, such as driving force - driving resistance balance diagram, the previous teaching method is basically the classroom teaching curve graphing method, give a textbook has been drawn a good curve of a certain car model, and then by the curve to analyze the changes in the driving force of the car in all gears. According to the engine torque fitting formula, driving force calculation formula, driving resistance calculation formula and speed calculation formula,
3.2 CRUISE software application examples
Using CRUISE software module library, we can quickly build the simulation model of powertrain system of traditional and new energy automobiles, and carry out the simulation on the dynamics of the whole vehicle, economy, etc., through the setup of calculation tasks. By setting up calculation tasks, it can simulate the dynamics and economy of the whole vehicle. At the same time, the software itself also provides a variety of automotive model templates, which is convenient for beginners to learn. Figure 3 shows the traditional rear-wheel drive (FR) powertrain simulation model provided by the software itself. By setting up the calculation tasks, rich text and graphical results about the dynamics and economy of the car can be obtained. After setting up the UDC cycle conditions, the calculated engine operating point distribution schematic can provide a basis for matching analysis of engine and vehicle power unit parameters.
3.3 Examples of ADAMS software application
In the automotive theory teaching, through ADAMS/CAR in the virtual environment to achieve automotive manipulation stability and smoothness and other related simulation experiments, to solve the problem of the actual experimental conditions limitations. In ADAMS/CAR, users can create their own models through templates, and can also call **** enjoy the database of the system or vehicle model for simulation and analysis. Take the single-shift line experiment in automobile maneuvering stability as an example, the virtual simulation of the whole vehicle maneuvering stability of a car was carried out. The experimental conditions can be set according to the standard, through the simulation calculation, the experimental results will be animated, graphs and other ways to show. ADAMS/CAR provides a simulation experimental platform that allows students to conveniently carry out a variety of virtual experiments related to maneuvering stability, braking, and smoothness, to make up for the lack of experimental teaching content.
4 Conclusion
The application of computer simulation technology to automotive theory teaching can make the quality of teaching significantly improved. Image, vivid simulation model analysis and demonstration, not only to facilitate the teacher's narrative, but also to enable students to have a deep understanding of the theoretical knowledge, to overcome the objective and practical conditions of the theoretical teaching constraints, but also to cultivate students' interest in the study of related software and application capabilities. Of course, to take full advantage of a variety of computer simulation engineering software to assist in teaching, but also requires a lot of preparatory work, but taking into account the improvement of the teaching effect of the improvement of the theoretical knowledge of the students, it will be very necessary.
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