基于扩张状态观测器的发动机转速双闭环自适应控制系统设计

Design of engine speed double closed-loop adaptive control system based on extended state observer

摘要:

为较好控制发动机设备的实时转速水平，使其在不同压力水平下均能呈现理想化工作状态，设计基于扩张状态观测器的发动机转速双闭环自适应控制系统。根据双闭环电路的集成形式，连接发动机控制器与自适应传感器，利用隔离驱动芯片，更改观测器驱动管的作用频率周期，完成自适应控制系统的硬件执行环境搭建。在此基础上，深入分析扩张状态观测器的内部结构，以微分跟踪器作为切入点，选取关键的ESO参数，再借助扰动补偿向量，完成对扩张状态观测器的频域参数配置，联合相关硬件应用设备，实现基于扩张状态观测器的发动机转速双闭环自适应控制系统设计。实验结果表明，在扩张状态观测器作用下，发动机元件在不同压力水平下的实时转速水平均能得到有效控制，可使发动机设备保持较长时间的稳定工作状态。

Abstract:

In order to better control the real-time speed level of the engine equipment, so that it can present an ideal working state under different pressure levels, a double closed-loop adaptive control system for engine speed based on the expanded state observer is designed. According to the integrated form of the double closed loop circuit, the engine controller and the adaptive sensor are connected, and the isolated drive chip is used to change the frequency period of the observer drive tube to complete the hardware execution environment of the adaptive control system. On this basis, the internal structure of the extended state observer is deeply analyzed, the differential tracker is used as the entry point, the key ESO parameters are selected, and the disturbance compensation vector is used to complete the frequency domain parameter configuration of the extended state observer, combined with related hardware The application equipment realizes the design of the dual closed-loop adaptive control system of engine speed based on the extended state observer. The experimental results show that under the action of the expansion state observer, the real-time speed level of engine components under different pressure levels can be effectively controlled, which can keep the engine equipment in a stable working state for a long time.