实时操作系统在发动机转矩控制中的应用

Engine torque control based on real-time operation system

在发动机转矩控制研究中,为了解决底层基于角度喷射控制的高度实时性和上层信号处理之间的矛盾,该文以实时操作系统μC/OSII为软件平台,以32位单片机MC68376为硬件平台,采用面向对象技术编程,完成了发动机转矩控制软件。所开发的软件完成了信号处理和喷射控制的管理,处理速度(一组数据处理时间1ms以内)和精度(误差5%以内)满足设计要求,同时验证了发动机转矩反馈算法和该文开发方法的正确性。

Torque estimation and injection control algorithm are introduced in the research of engine torque control. For the coordination of high level control algorithm and low level hardware operation, real-time operating system, and object oriented technology are used to develop and manage software objects in engine management system. Specifically, typical engine control objects like sensor object and controller object are developed based on the software platform of μC/OSII and the hardware platform of 32 bit microprocessor MC68376. Experimental results show that the time deal with a group of data is less than 1 ms and the error is less than 5%. The operating system can satisfy the need of real time. The experimental results also prove the validity of the developed method.