燃料电池汽车空气子系统控制研究综述

Review on Air Subsystem Control of Fuel Cell Vehicle

燃料电池汽车空气子系统是一个高度非线性、时滞性、强耦合性的复杂系统,实现空气系统精准、高效的流量与压力控制是系统控制中的关键难点。本文对目前空气系统中常采用的几类控制方法进行了概括与总结。比例积分微分控制方法与结构简单、适应性强,是目前燃料电池汽车空气系统中最常采用的控制方法之一,但无法做到同时对流量与压力的控制,同时控制精度偏低;单一模糊控制方法对复杂空气系统的控制精度稍低,常与其他方法联用;针对空气系统的复杂特性,模型预测控制与解耦控制方法被提出并在系统内应用,控制精度与响应速度均优于比例积分微分控制方法,但其参数选取对控制结果的影响差异很大。

The air subsystem of fuel cell vehicle is a complex system with high nonlinear,time-delay and strong coupling.It is a key difficulty to achieve accurate and efficient flow and pressure control of the air system.Several kinds of control methods commonly used in air system are summarized and summarized in this paper.The proportional integral differential control method is one of the most commonly used control methods in the air system of fuel cell vehicles with simple structure and strong adaptability,but it cannot control the flow and pressure at the same time,and the control accuracy is low.The single fuzzy control method for complex air system has low precision and is often used together with other methods.In view of the complex characteristics of air system,the model predictive control and decoupling control methods are proposed and applied in the system.The control accuracy and response speed are better than the proportional integral differential control method,but the influence of parameter selection on the control results is very different.