基于PLC和伺服电机的主动冲箱式造波系统的控制及实现

为了研究在10 m×0.5 m的玻璃水槽内的主动冲箱造波技术，设计了基于PLC运动控制器、伺服电机和驱动器、工控机以及浪高采集仪的造波系统。该系统根据水动力学参数在PLC运动控制程序中实现主动造波算法；采用交流伺服驱动器并搭配相应尺寸的电机，完成楔形板的上下造波运动；通过工控机上的人机界面对造波机系统的整体状态进行控制。为了提高控制精度，该系统在伺服驱动器内部闭环控制的基础上，还增加了基于PID算法的波高和频率闭环控制。实际应用表明，该造波系统可通过对波形的实时反馈，保证控制的准确性和稳定性，达到了主动造波的目的。

Control and realization of an active striking box wave makerbased on PLC and servo motor

In order to study the wave making technology of active striking box in a wide glass water tank（10 m×0.5 m）, this paper designed a wave making system based on a PLC motion controller, servo motor and driver, industrial computer and wave height acquisition instrument. The system implements an active wave making algorithm in the PLC motion control program according to the hydrodynamic parameters. It not only uses the AC servo driver and the motor of the same size to complete the wave making undulations of the wedge plate, but also controls the overall state of the wave making machine system through the man-machine interface on the industrial computer. To improve the control accuracy, the closed-loop control of wave height and frequency based on a PID algorithm is added to the external closed-loop control of the servo driver. A practical application shows that the system can ensure the accuracy and stability of control by real-time feedback of the waveform, and achieve the purpose of active wave making.