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针对经典模糊控制策略和PID控制策略各自的优点和缺点,建立了一种Fuzzy-PID自适应切换的混合控制系统,在控制过程中,将PID线性控制器通过控制的权重与模糊控制器并行结合,在偏离稳定的工作点较远的区域会以具有优势的模糊控制为主,在稳定的工作点附近位置则会主要使用静态性能好的PID线性控制。并针对Fuzzy-PID的混合控制系统中经常采用的阈值切换和单模糊子集进行模糊切换的缺点,提出一种利用模糊权重控制器进行的切换,应用结果表明:该模糊权重切换下的混合控制性能有所改善和提高。
Aimed at the advantages and disadvantages of classical fuzzy control strategy and PID control strategy, a hybrid control system based on Fuzzy-PID adaptive switching is established. In the process of control, the PID linear controller is combined with the fuzzy controller by the weight of control in parallel , And the fuzzy control with predominance in the area far away from the stable working point will dominate. In the vicinity of the stable working point, the PID static control with good static performance will be mainly used. Aiming at the shortcomings of the fuzzy switchover between the threshold switching and the single fuzzy subset frequently used in the Fuzzy-PID hybrid control system, a fuzzy weight controller is proposed for switching. The application results show that the hybrid control under the fuzzy weight switching Performance has improved and improved.