Solid-state microwave source power control method and system based on enhanced PID

Abstract

The application provides a solid-state microwave source power control method and system based on an enhanced PID, comprising: collecting forward output power of a solid-state microwave source, comparing the forward output power with target power to obtain a discrete error signal; inputting the error signal into an enhanced PID controller, and calculating a theoretical control amount according to a discrete control law; when the theoretical control amount exceeds an output amplitude limiting range of an actuator, performing saturation constraint processing to obtain an actual executable control amount; introducing a limiting weakening mechanism at an integral update link of the controller, amplifying a deviation between the actual control amount and the theoretical control amount by a limiting weakening gain, and feeding back the amplified deviation to an integral term to dynamically correct the integral to suppress saturation; and outputting the actual executable control amount to the actuator after conversion to realize power closed-loop control. The application solves the technical problem that, when a solid-state microwave source outputs high power, integral saturation of traditional PID control is easily caused due to saturation and nonlinear characteristics of the actuator, and system overshoot is increased, regulation time is prolonged, and steady-state accuracy is reduced.

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