PID control parameter optimization method with robustness guarantee

Abstract

The invention discloses a PID control parameter optimization method with a robustness guarantee. Firstly a constrained particle swarm optimization algorithm is employed, the performance index of a controller and the constraint condition to be satisfied by the controller are integrated, a performance index function with the constraint condition is formed, thus a constrained optimization problem into an unconstrained optimization problem, a standard particle swarm algorithm is employed to obtain the optimal PID control parameter which satisfies a constraint condition. According to the optimization method, an optimal PID controller parameter can be searched, thus the obtained controller satisfies a mu comprehensive robustness index, and the PID controller parameter optimization method is further applied to a missile PID controller.

Description

technical field [0001] The invention belongs to the technical field of automatic control, and in particular relates to a robust PID control parameter optimization method. Background technique [0002] The controller design of the missile is one of the key technologies for the missile to automatically attack the target. The quality of the controller design is directly related to the flight quality and miss target of the missile. It is the core content of the missile flight control system design. Most of the current missile aircraft use PID controllers. With the development of missile control technology, such as the fifth-generation air-to-air combat missiles, an increasingly prominent requirement is that the designed controllers meet the multivariate robustness index. . [0003] The traditional missile PID control law design method is a single-channel design and multi-channel verification method, and the single-channel design method can only use traditional single-channel ro...

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Problems solved by technology

[0003] The traditional missile PID control law design method is a single-channel design and multi-channel verification method, and the single-channel design method can only use traditional single-channel robustness indicators such as amplitude margin and phase angle margin, and the traditional robustness The controller designed by the rod method has the disadvantage that the order is too high to be realized, while the classical PID control method is simple to implement but cannot guarantee the robust performance of the multivariable system during the design process

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