Research On Control Algorithms Of Speed For Single-axis Turntable

Turntable is an important part of many high-precision servo control system, and is widely used in aviation, aerospace, precision manufacturing, shipbuilding, weapons and other fields. The speed stability is a key indicator of servo system, and the artillery command instrument, the military radar, the telescopes and so on all have extremely explicit request to it. So it has very important significance for both national defense and civilian livelihood to study on control methods of the turntable speed stability.Firstly, this article introduces the research background and significance of control methods for turntable speed stability and summarizes various kinds of control methods put forward and applied by the scholars at home and abroad. With the single axis turntable as control object, a brief introduction of the hardware and software system is made, and the different kinds of influence factors are analyzed, then the evaluations of the speed stability are given, and last the mathematical model of the turntable is established in detail.Secondly, the article introduces the basic principles and design process of the traditional PID control algorithm, fuzzy self-tuning PID control algorithm and Active Disturbance Rejection Control(ADRC) algorithm. Based on the design steps of the controllers, we build the traditional PID controller, fuzzy self-tuning PID controller and ADRC controller from three different aspects. A simulation study is conducted in case of different parameters and disturbances, and then we discuss and analyze the simulation results in detail. It is proved that the three control methods are effective to improve the speed stability for the single axis turntable.Finally, the results confirm that these three control algorithms have good compensation to disturbances of the turntable, and can make the turntable speed control system have stronger anti-interference ability and robustness, through writing the traditional PID control algorithm, fuzzy self-tuning PID control algorithm and ADRC control algorithm in the single axis turntable.