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基于频域校正的控制器设计的方法,即为在开环系统对数频率特性基础上,以满足稳态误差、开环系统截止频率和相角裕度等要求为出发点,进行串联校正的方法。首先针对非线性机理模型在发动机工作的各平衡点处分别线性化,选取发动机中间工况的平衡点作为标称模型,根据给定的控制指标,采用频域校正的方法进行控制器设计,最后通过仿真验证了控制器的有效性。
The method of controller design based on frequency domain correction is based on the logarithmic frequency characteristics of the open-loop system, in order to meet the requirements of steady-state error, open-loop system cut-off frequency and phase margin as a starting point, . First of all, the nonlinear mechanism model is linearized at each equilibrium point of the engine work, the equilibrium point of the engine intermediate condition is selected as the nominal model, and the controller design is performed by using the frequency domain correction method according to the given control index. Finally, The simulation verified the effectiveness of the controller.