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高速运动舵机是一种高能量密度的作动器,具有瞬时、高速及高加速的特征。由于高速运动舵机应用的特殊性,必须对其进行严格的产品性能测试,尤其是其带载工况下的工作可靠性,需要通过模拟负载工况来进行测试。由于高速运动舵机的固有特征,传统电液和电动伺服加载方式将产生难以克服的多余力,基于此,提出一种气动伺服加载方案。首先,对气动加载进行了建模与仿真,验证了气动伺服加载的合理性,优化了系统参数;然后,构建了气动伺服加载实验台,进行了对高速运动舵机在不同工况下的载荷谱加载实验。经过实验验证表明,该气动伺服加载系统能够实现对高速运动舵机进行变梯度动态载荷的加载,并具有较高的精度和可重复性,对高速运动舵机的测试具有重要的意义。
High-speed moving servo is a high energy density actuator, with instantaneous, high speed and high acceleration characteristics. Due to the particularity of the high-speed moving steering gear application, it must be rigorously tested for its product performance, especially its working reliability under load conditions, which needs to be tested by simulated load conditions. Due to the inherent characteristics of the high-speed moving steering gear, traditional electro-hydraulic and electric servo-loading methods will produce unmanageable excess force. Based on this, a pneumatic servo loading scheme is proposed. First of all, the aerodynamic loading is modeled and simulated to verify the rationality of the pneumatic servo loading and to optimize the system parameters. Then, a pneumatic servo loading test bench is constructed and the load of the high speed steering servo under different operating conditions Spectral loading experiment. The experimental verification shows that the pneumatic servo loading system can load the high-speed moving servo with variable gradient dynamic loads with high precision and repeatability, which is of great significance to the test of high-speed moving servo.