直升机主桨载荷模拟系统是一个多输入多输出液压伺服加载系统,该系统助力器和加载缸之间存在复杂的非线性耦合关系.通过建立系统的数学模型分析了该系统存在的力耦合关系,发现其造成的影响在系统允许的误差范围之内,因此可忽略这部分耦合因素.从而为简化系统控制策略提供依据.%The load simulation system of the helicopter rotor blade is a MIMO hydraulic servo loading analog system. And there are complicated non-linear coupling relationships among the booster and the loading cylinders in this system. After mathematical model is established and the force coupling relationship is analyzed, it is found that the effect of error is within the scope of the system's permission. So the displacement of the coupling between channels can be ignored. Thus it provides the basis to simplify system control strategy.
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