Research Of The Braking Energy Recovery Testing And Controlling System Based On CAN Bus

Brake energy recovery system can brake the process of electric vehicles part of kinetic and potential energy recovery and recycling store, to improve vehicle energy efficiency, extend the driving range of electric vehicles. To meet the braking energy recovery mechanism and bench research needs. Based on controller area network (CAN bus) technology, research and development of the braking energy recovery test bench control system.. Paper work includes the following aspects:From the cost point of view, select the Freescale MCU MC9S08DZ60 as the control system of micro control unit (MCU), Modular design, research and development of the control system hardware, MCU resources will lead to external functions to facilitate the application of. Including general-purpose I/O interfaces, A/D, D/A, PWM, CAN, LIN, IIC bus and so on. Conditioning hardware and a certain input and output drive part of the combination, may constitute a specific feature of the controller to meet the hardware system, it has some versatility and scalability.Based on the development of hardware, using software engineering and modular approach, To accessibility, universality, portability, scalability, inheritable for the purpose, design and implementation of appropriate software. Software and hardware combination, may constitute a more complete control system study, development platform.For braking energy recovery test bench, in the hardware and software platform, based on the completion of the test bench control system features hardware and software development, And use it as the next-bit machine to machine as the host computer PC, using USB-CAN adapter, including a host computer to establish a CAN node and three lower computer CAN node test bench control system.. Achieve system control, online debugging and data acquisition functions.In summary, for braking energy recovery test bench, Proposed based on CAN bus control system for braking energy recovery scheme. Independent design and development of microcontroller based MC9S08DZ60 chip hardware platform. Bus platform rich resources, including CAN, LIN, IIC bus and so on. CAN bus for the practical application of modular design, using USB-CAN adapter for PC and the next bit plane data transmission between the form the CAN bus based software control system. Function by controlling the experimental system, results shows that the control system studied stable, simple, applicability, get to the expected effect and purpose.