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1. 发明授权

US4148452A Filtering technique based on high-frequency plant modeling for high-gain control 失效
标题翻译：基于高频植物建模的高增益控制滤波技术
公开(公告)号：US4148452A
公开(公告)日：1979-04-10
申请号：US858762
申请日：1977-12-08
申请人： Frank R. Niessen , John F. Garren, Jr.
发明人： Frank R. Niessen , John F. Garren, Jr.
IPC分类号： G05D1/08
CPC分类号： G05D1/0825
摘要： This invention is an improvement in aircraft control systems that utilize feedback motion sensors to generate a control signal to control the aircraft. The improvement consists essentially of a complementary filter comprising a simplified model of the aircraft, a high-pass filter, a low-pass filter and a summing amplifier. The control signal is applied to the simplified model of the aircraft which ateempts to compute the vehicle response to the signal. This computed response is then fed into the high-pass filter to eliminate long-term errors in the calculated response, with the result that a good estimate of the high frequency content of the aircraft motion is obtained. In order to obtain a good estimate of the low frequency content of the motion a rate gyro signal is fed through the low-pass filter that eliminates all of the offending noise. The outputs from the high-pass and low-pass filters are summed by the summing amplifier to produce an estimated rate which is then used as a motion feedback signal. The use of the complementary filter permits a substantial increase in frequency band-width due to the simultaneous reduction in noise amplificaton and control limit-cycle tendencies.
摘要翻译：本发明是利用反馈运动传感器产生控制信号以控制飞行器的飞机控制系统的改进。该改进基本上由包括飞行器的简化模型，高通滤波器，低通滤波器和求和放大器的补充滤波器组成。控制信号被应用于飞行器的简化模型，该简化模型试图计算车辆对信号的响应。然后将该计算的响应馈送到高通滤波器中以消除所计算的响应中的长期误差，结果是获得对飞行器运动的高频内容的良好估计。为了获得运动的低频内容的良好估计，速率陀螺仪信号通过低通滤波器馈送，消除了所有令人讨厌的噪声。来自高通滤波器和低通滤波器的输出由求和放大器相加以产生估计速率，然后将其用作运动反馈信号。由于噪声放大和控制限制周期趋势的同时减少，使用互补滤波器可以显着增加频带宽度。

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