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SYSTEM PARAMETER IDENTIFICATION METHOD BASED ON RATE-LIMITED RELAY WITH HYSTERESIS AND SINUSOIDAL INJECTION
SYSTEM PARAMETER IDENTIFICATION METHOD BASED ON RATE-LIMITED RELAY WITH HYSTERESIS AND SINUSOIDAL INJECTION
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机译:基于迟滞和正弦注射的限速继电器的系统参数识别方法
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摘要
A system parameter identification system uses a combination of relay control and sinusoidal injection to derive accurate estimates of system parameters of a controlled system or process while satisfying the rate-limit associated with some control applications. The system uses rate-limited relay control with hysteresis to place the system in oscillation. The system then switches the control signal from relay-based control to open-loop sinusoidal control using oscillation frequency, amplitude, and phase information obtained during the relay control stage. During the sinusoidal control phase, the plant output passes through a bandpass filter at the oscillation frequency to get a clean sinusoidal signal. The phase difference between the input and output signals and the output/input amplitude ratio are then obtained and used to calculate of the system parameters.
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