Principles of Automatic Control Interview Frequently Asked Questions on what is principles of automatic control, what is feedback control, and what is transfer function.
1. What is Automatic Control Principles.
The main contents of automatic control principles include: system analysis, system modeling, controller design, system optimization and so on. Among them, system modeling is the basis of automatic control principle, which refers to the abstraction of the actual control system into a mathematical model for analysis and design. System analysis refers to analyzing and evaluating the performance of the control system to determine the stability, response speed, accuracy and other indicators of the system.
Controller design refers to the design of a suitable controller based on the system model and the results of the analysis in order to realize the automatic control of the system. System optimization refers to the optimal design of the control system to achieve the best control effect. In general, the principle of automatic control is an important discipline, which provides an important theoretical foundation and technical support for the development of modern engineering technology.
2, what is feedback control.
Feedback control is a method of controlling a system by measuring the system output and comparing it with the desired output. Feedback control systems usually consist of three basic parts: sensors, controllers, and actuators.
Feedback control is widely used in industrial automation, aerospace, robotics, medical devices, and other fields. For example, self-driving car is a system based on feedback control, which measures the vehicle position, speed, direction and other information and compares it with the desired value, and then adjusts the vehicle's steering, acceleration, braking and other control signals according to the comparison results in order to realize the automatic control of the vehicle.
3, what is the transfer function.
Transfer function refers to the mathematical relationship between the input and output of the control system, the transfer function is a complex function, which maps the complex value of the input signal to the complex value of the output signal, indicating the system's response to the input signal. The transfer function is usually represented by the Laplace transform or the Fourier transform.
Transfer function is an important tool for control system analysis and design, it can be used to analyze the stability of the system, response speed and other performance indicators, can also be used for the design of the controller, in order to achieve the automatic control of the system. In practice, the transfer function can be determined by experimental measurements or mathematical modeling to provide a basis for control system analysis and design.