基于仲裁机制的扭矩控制算法

An Torque Control Algorithm on the Diesel Engine Based on Arbitration

摘要:

设计了一种应用于电控柴油发动机的扭矩控制算法,该算法首先针对当前电控技术工况日趋复杂的情况,设计了一种仲裁表决机制以整合各类工况的扭矩需求；另一方面,针对传统PID控制策略在电控柴油发动机正常运转情况下的诸多不足,设计了一种基于前馈补偿的动态PID控制策略；该算法在发动机台架上进行了实验验证:首先在转速瞬间提升至设定转速时,算法可以在3 s内快速响应转速变化并收敛；其次在全转速状态下,该算法的扭矩变化曲线与传统算法的相比,两者相差小于3%；两组实验结果说明该算法基本满足发动机正常工作需要。

Abstract:

The torque control algorithm is designed and applied on the diesel engine. The algorithm includes two parts. First, Due to the increasingly complex conditions in the electronic control technology, a arbitration mechanism is designed to integrate the torque requirements from all the conditions; secondly, aiming at the deficiency of the traditional PID strategy in the Electronic control, an improved PID strategy is designed based on dynamic feedforward compensation. The algorithm was tested in the engine bench:first, when the roll speed is up to the set value instantaneously, the algorithm responses rapidly and converges in 3 seconds; secondly, in the full speed state, The difference of the torque curve between the algorithm and the traditional algorithm is less than 3%. These experiments show that the algorithm meets the basic needs of the daily work of the engine.