基于模糊PID控制的交流励磁调节系统的MATLAB建模与仿真

交流励磁发电机能够实现变速恒频恒压发电，具有良好的速度适应能力。将该发电机应用到军用车辆上，便可以使装备在车辆行驶过程中获得稳定的电能。由于传统的PID控制在分析非线性系统时存在的局限性，在发动机转速变化时调节的快速性、稳定性上很难满足装备要求，对此，本文提出了一套采用模糊PID控制算法对SPWM波的占空比进行实时控制的方法，以提高调节的快速性和稳定性。利用Matlab／Simulink对交流励磁发电系统进行建模，并对系统进行了负载变化、转速变化实验。结果证明，采用模糊PID控制算法的交流励磁系统在运行工况改变情况下可以得到稳定的输出电压波形曲线，达到了预期效果。

Modeling-simulation of AC-excited modulation system based on MATLAB and fuzzy contrl

AC-excited generator can achieve variable speed constant frequency constant voltage power suppling , has good speed adaptation. The generator is applied to military vehicles would be able to supply equipment with stable power when the vehicle moving. Existing limitations in analysing nonliner systems, the traditional PID control is difficult to meet equipment requirements on the adjustment rapid and stability when the engine speed changing. Toward this question, this paper proposes a kind of fuzzy PID control method for real-time control of SPWM wave,to improve the rapidty and stahility of regulation. This paper establishes a simulation model of ACEG system by using Matlab/Simulink and carries out some experiments under different speed and load. The results prove fuzzy PID control can acquire stable voltage curve under these conditions, experiments reach anticipative purpose.