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分析了某超声速风洞全挠性喷管的工作原理及特点,针对其型面控制中存在的问题,采用基于虚轴原理的运动同步控制方法,模拟出一根主轴直接驱动电动缸与电动推杆运动轴来实现喷管型面的控制;同时,建立了单路执行机构模型和同步控制系统模型,并通过Matlab仿真验证了模型有效性。结果表明,采用虚拟主轴同步控制策略的风洞喷管型面控制系统模型可以获得满意的运动同步与抗干扰性能,达到了预期目的。
The working principle and characteristics of a fully flexible nozzle for an ultrasonic wind tunnel are analyzed. According to the problems existing in the control of its profile, a motion synchronous control method based on the virtual axis principle is used to simulate a spindle direct drive electric cylinder and electric push Rod axis to achieve the nozzle surface control; the same time, established a single actuator model and synchronous control system model, and the effectiveness of the model was verified by Matlab simulation. The results show that the model of wind tunnel nozzle profile control system with virtual spindle synchronization control strategy can achieve satisfactory motion synchronization and anti-jamming performance, and achieve the expected goal.