What Is an Electronic Speed Control?

Speed control systems (speed control systems) refer to automatic control systems that take speed (or speed) as the controlled quantity. Speed control systems are widely used in various industrial sectors.

Speed control systems (speed control systems) refer to automatic control systems that take speed (or speed) as the controlled quantity. Speed control systems are widely used in various industrial sectors.

In the speed control system, the desired speed variation is determined by the process requirements of the production machinery during the production process.

For example, when a prime mover (water turbine or steam turbine) is used to drive an alternator that generates electricity at a certain frequency (for example, 50 Hz), a speed control system must be used to keep the prime mover speed constant to ensure the frequency of the alternating current from the generator Meet the requirements. For a diesel engine without load, if speed control is not adopted, the phenomenon of speeding will occur. In the speed control system, the desired speed variation is determined by the process requirements of the production machinery during the production process. ^[1]

There are three main types of speed (rotational speed) control: speed regulation, steady speed, and acceleration / deceleration control.

(1) Speed regulation: refers to adjust the speed of production machinery stepwise (stepwise) or smoothly (steplessly) within a certain range of maximum speed and minimum speed. The speed regulation system consists of production machinery and

There are many ways to achieve speed control, including mechanical, hydraulic, and electrical. The electrical method is relatively simple, has good control performance, is economical, and is easy to maintain, so it is most widely used. Speed control systems are generally closed-loop control systems, which can be single-loop or multi-loop feedback control systems. The speed control system can be designed using the method of automatic control theory. Some examples of speed control systems are speed control systems, multi-loop DC speed control systems, reversible speed control systems, AC frequency variable speed control systems, AC cascade speed control systems, and the like.