FL-51风洞阵风发生器电液伺服控制系统

Electro-hydraulic Gust Generator and Control in FL-51 Low-speed Wind Tunnel

针对FL-51风洞的阵风模拟需求,研究了电液伺服摆动缸独立驱动叶片的阵风发生器,通过结构解耦、控制同步的方式,简化了发生器结构,从而降低了运动过程中与叶片及洞体的耦合振动。研究了高频同步位置伺服控制算法,提高了发生器叶片的摆动幅度和频率,实现了发生器不同振幅、不同频率、不同波形的组合运动。通过装置测试与阵风流场校测,结果表明:电液伺服摆动马达驱动能力强、动态高、生成的正弦波精度高,在来流风速70 m/s下可稳定工作,能产生符合测试要求的高品质单频和多频阵风。

Aiming at the gust simulation requirement of FL-51 wind tunnel, the wind gust generator driven by electro-hydraulic servo swing cylinder independently is studied. The structure of the generator is simplified by structure decoupling and synchronization control, and the coupled vibration with the blade and the cavity is reduced. The high frequency synchronous position servo control algorithm is studied, which improves the swing amplitude and frequency of the generator blade, and realizes the combined movement of generator with different amplitude, frequency and waveform. The results of device test and gust flow field calibration show that the electro-hydraulic servo swing motor has strong driving ability. High dynamic, high precision sine wave generated, in the incoming wind speed of 70 m/s can work stably, produce high quality single frequency and multi-frequency gust in line with the test requirements.