1, synchronous motor
Permanent magnet synchronous motor (PMSM) is a typical nonlinear, multivariable and coupling system. When used as a servo motor, it will be affected by nonlinear factors such as torque fluctuation.
Explanation: An AC motor, whose speed depends only on the frequency of power supply and the number of magnetic poles, and has nothing to do with the load. Used for loads requiring constant speed, such as electric clocks, rolling mills, etc.
Step 2 synchronize
Sentence making: Another way to avoid synchronization problem is to allocate a large global memory block and divide it into smaller slots, each of which can be used by a thread for logging.
Explanation: In science and technology, two or more quantities that change with time keep a certain relative relationship in the process of change.
3, asynchronous motor
Sentence: In the past, the biggest defect of asynchronous motor was that it was difficult to change the rotor speed, but with the development of modern semiconductor control technology, this problem has been solved.
Description: The rotating magnetic field generated when alternating current enters the stator winding generates induced current in the rotor winding. The electromagnetic force induced by the rotating magnetic field of the stator makes the rotor rotate, and its rotation speed is slightly lower than that of the rotating magnetic field. This kind of motor is simple and firm in structure and has the widest application. Also known as induction motor.
4. pace
Sentence making: not all steps of SOE should be completed in order; Some of them must be passed immediately, in a parallel way.
Explanation: the process of things.
5. Walking machine
Sentence: In the early days of the Clone Wars, as a powerful armored assault weapon, the All-Terrain Tactical Strike Walking Machine (AT-TE) made a shocking appearance on the battlefield of Geonosis.
Description: The floorboard of walking machine.
6, synchronous generator
On the basis of analyzing the structure of low-power permanent magnet synchronous generator, the design characteristics of this kind of motor are expounded, and the prototype is designed and developed, which verifies the correctness of the design method.
Description: Constant speed alternator. The frequency of power generation depends on its rotating speed and the number of magnetic poles. Three-phase synchronous generators are generally used in power plants.
Step 7 run
Sentence making: Two years ago, when I was learning to run, one thing I learned was how to replace negative thoughts with positive ones (see the next one).
Description: Run forward according to the prescribed posture.
8. Instead of walking
Sentence: In Jack's view, this tragedy did bring him some comfort: he was badly injured on the battlefield and had to rely on a wheelchair to walk. At this time, Jack regained his mobility through his incarnation.
Explanation: The book refers not to walking, but to riding by car and horse.
9, preliminary
Sentence making: For example, if it takes more than 10 minutes to execute a build process, you can create a build pipeline that will run a preliminary lightweight build after someone submits the code to the repository.
Explanation: at the beginning; Not final or incomplete: make comments | These problems have been solved.
10, on foot
Sentence: For example, I just want to walk along Wangfujing Street from the northwest entrance. I have no special purpose, so I have to ask the subway staff which exit to take.
Explanation: walking (different from riding a car, riding a horse, etc. ).