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为了验证飞行器滚转稳定控制系统,搭建了滚转通道地面半实物仿真平台。根据相关分析法,采用扫频技术,测量系统开环和闭环频率响应,验证利用开环频率特性计算闭环频率特性的正确性。考虑飞行器实际飞行条件,选择-15℃的低温弹道作为典型弹道,在与滚转稳定控制系统相关的滚转阻尼与副翼舵偏效率分别变化20%的最坏情况下,测试飞行器滚转稳定控制系统的频域和时域特性。实验结果表明,该半实物仿真系统能够准确有效地测试飞行器滚转稳定控制系统的各种性能。
In order to verify the stability control system of the aircraft rolling, a semi-physical simulation platform for tumbling tunnel was set up. According to the correlation analysis method, the open-loop and closed-loop frequency responses of the system were measured by swept-frequency technique. The correctness of closed-loop frequency characteristics was verified by using the open-loop frequency characteristics. Considering the actual flight conditions of the aircraft, a low-temperature ballistic trajectory of -15 ℃ is chosen as the typical trajectory. Under the worst case condition that the roll damping and the ailerons’ steering efficiency associated with the roll stability control system change by 20% respectively, the test aircraft roll stability Control the frequency and time domain characteristics of the system. The experimental results show that the semi-physical simulation system can accurately and effectively test various performance of aircraft roll stability control system.