This paper built an off-line simulation model of 6135 diesel engine using the software of MAT-LAB/Simulink. A fuzzy PID parameter-self- tuning strategy was presented through the combined use of PID and fuzzy control. The analytical results show that the timing rate is generally greater than 7% by the implementation of traditional PID control while under fuzzy PID control strategy the timing rate could reach 5. 4% which is better than the performance of single PID control. Great improvement of the engine control performance was obtained by the implementation of fuzzy self-tuning strategy. In particular, it is effective on overcoming disturbance of load.%针对PID控制器在柴油机调速系统中存在的不足,本文以Matlab/Simulink软件为平台,建立了6135型柴油机离线仿真模型,并将模糊控制与PID控制相结合,提出一种比较完善的模糊PID控制器参数自整定算法.仿真结果表明,采用经典PID控制,瞬态调速率一般不小于7％,而在模糊PID控制下柴油机突卸或突加100％负荷,其瞬态调速率为5.4％,明显好于单一的PID控制.模糊自整定PID控制器使柴油机的控制效果提高显著,尤其在克服扰动方面效果明显.
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