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电动舵机负载模拟器可在实验条件下模拟飞行器飞行过程中舵机受到的空气动力铰链力矩,是半实物仿真的重要设备。在介绍电动负载模拟器研究进展并指出目前伺服系统研究所面临的难题的基础上,以改善系统动态频响为目标,设计基于双回路电机的加载方案并建立双回路系统的数学模型;通过系统仿真,分析系统输出力矩对指令力矩的跟踪能力,验证数学模型的准确性。结果表明:双回路方案有效地抑制了系统多余力,其工作频带在舵机扰动的情况下仍可达35 Hz,为电动负载模拟器提供了一种频带更高、匹配性更好的实现方案。
The electric servo load simulator can simulate the aerodynamic hinge moment of the steering gear during the flight of the aircraft under the experimental conditions and is an important device for the semi-physical simulation. On the basis of introducing the research progress of the electric load simulator and pointing out the problems of the servo system research at present, aiming at improving the dynamic frequency response of the system, a loading scheme based on the double-loop motor is designed and a mathematical model of the double-loop system is established. Simulation and analysis of the system output torque of the command torque tracking capability to verify the accuracy of the mathematical model. The results show that the dual circuit scheme can effectively restrain the excess system force and the operating frequency band can still reach 35 Hz under the condition of the steering gear disturbance, which provides a scheme for the electric load simulator to have higher frequency band and better matching .