基于智能竞标的自适应轨压控制算法

A Adaptive Rail Pressure Control Algorithm Based on Intelligent Bidding

摘要:

设计了一种应用于高压共轨柴油发动机的轨压控制算法;算法采用组合竞拍机制以解决复合工况下的轨压扰动问题,并设计了一种分段动态标定算法以解决传统PID标定算法计算效率低的问题,此外算法针对柴油发动机特性对PID控制器进行了多项改进以提高算法响应速度和跟随性;最后通过仿真实验对算法进行了验证,实验结果证明本算法对输入转速信号及喷油期望值具有良好的跟随性和响应速度,并且轨压控制较为平稳,其波动幅度不超过1%,基本符合高压共轨柴油发动机正常工作的需要。

Abstract:

Design a rail pressure control algorithm for common Rail diesel engine. The new algorithm uses combinatorial auction mechanism to improve the pressure disturbance in complex conditions.It designs a new calibration algorithm based on the segmentation mechanism to reverse the inefficiency of the original algorithms. On the other hand, It improves many aspects of the PID controller based on the features of the diesel engine. The algorithm is verified by simulation experiment. The results prove that the output rail pressure has good tracking and effciency. Besides , it has good stability that the amplitude of fluctuation is less than 1%. All the results proved that its features are consistent with the engine’s requirment of normal running.