Design of electronic speed controller based on analog PID

CAO Yu; ZHOU Qin; LI Sheng; LI Yazhou; XU Mao

doi:10.19471/j.cnki.1673-6397.2025.05.012

Abstract：In order to solve the problem that the traditional mechanical governor can hardly meet the performance requirements of modern diesel engines,a proportional integration differentiation(PID)circuit is constructed through operational amplifiers.The circuit includes speed setting module,PID speed regulation module and power amplification module,a multi-functional zero difference electronic governor controller based on analog PID control is designed.Hardware circuit is used to realize the control of starting oil quantity,the switching of idle/rated working condition and the independent adjustment of PID parameters.The test bench test combined with sudden load and sudden unloading working condition verifies the speed regulator control performance.The test bench results show that the speed fluctuation rate is not more than 0.2％under the sudden load and sudden unloading working condition,the steady-state speed regulation rate is 0,the transient speed regulation rate is less than 7％,and stable time of the sudden negative load working condition is about 6～7 s,and the performance meets the secondary speed regulation performance index.The controller has a simple structure and anti-interference ability,and has certain engineering application value.