风洞模型电动推杆Y机构运动同步控制系统建模与仿真性能分析

Modeling and simulation performance analysis of synchronous control system of electric push rod Y mechanism for wind tunnel model

某高超声速风洞模型中,需要对电动推杆Y机构的运动进行同步控制,同步运动控制精度或控制性能直接影响风洞的运行品质。基于输出位移的偏差耦合机理,设计了风洞模型电动推杆Y机构运动同步控制系统,分别建立了风洞模型电动推杆Y机构运动同步控制系统的机械系统、电流控制环、速度控制环以及位置控制环等动力学模型;对同步控制系统电流环PI调节器、速度环PI调节器以及位置环PID调节器进行了参数仿真整定,设计了同步闭环三环控制系统,并对系统进行了三环仿真性能分析,其结果表明:系统同步响应速度快,同步位移和同步速度控制精度均达到了系统提出的设计性能指标要求,且系统具有较强的鲁棒性。

In a hypersonic wind tunnel model,the motion of the electric push rod Y mechanism needs synchronous control.The precision or performance of synchronous control will directly affect the operation quality of the wind tunnel.Based on the deviation coupling mechanism of output displacement,the synchronous control system of the electric push rod Y mechanism for wind tunnel model was proposed,the dynamic models of the mechanical system,current control loop,speed control loop and position control loop of the synchronous control system of the electric push rod Y mechanism were established respectively.The parameters of current loop PI regulator,speed loop PI regulator and position loop PID regulator of the synchronous control system were set,the synchronous closed-loop three-loop control system was designed,and the performance of the system was simulated and analyzed.Simulation results show that the system has high response speed,high control accuracy and strong robustness.