某小型武器稳定系统的建模及仿真

Modelling and Simulation Research on a Small Scale Weapon Stabilized System

针对某小型武器稳定系统稳定精度差的问题,构建了其控制系统的数学模型,通过仿真施加试验台架扰动信号,对现系统采用的传统PID控制器进行仿真计算,得到其动态稳定精度,并把得到的和定型试验稳定精度数据对应的外扰模拟信号作为改造后系统的标准扰动输入,对线性自抗扰控制器进行了比对仿真研究。仿真结果表明,系统采用线性自抗扰控制器具有响应速度快、稳定精度高、抗扰能力强的优点。这一方法得到的仿真结果和实车具有较高一致性,可以有效解决实车参数调试困难的问题。

The mathematic model of a small scale Weapon Stabilized System is presented to the problem of low steady precision.The dynamic stabilization precision is simulated and calculated based on the traditional PID control algorithm while disturbance signal is added to the experiment plant in actual system.Regarding the disturbance signal which is obtained and compared with stereotyped experiment steady precision data as the normal input in the developed system,a simulation is studied contrasted with linear active disturbance rejection control.The results show system has the characteristic of faster response speed,higher steady precision,as well as anti-disturbance while linear active disturbance rejection control is used.The simulation results based on above method are consistent with practice,which can effectively solve the difficult problem of parameters debugging in vehicle testing.