关键词:数字信号处理器;控制器局域网;串口;实验室虚拟仪器工程平台
Abstract
According to the design of hybrid vehicles motor drive system laboratory research needs, the establishment of a hybrid electric vehicle motor drive unit with other units (such as vehicle control unit) to the transmission of information communication systems. On the one hand, the achievement of the other units for motor drive unit provided command (such as speed to be, given current, etc.), on the other hand motor drive unit will be running some of the parameters sent to other units.
To accomplish this goal, this paper, hybrid and the structural characteristics of the two sets of laboratory conditions designed communication system. First, because hybrid vehicles currently the communications unit of the main means of communication with CAN bus, the paper used between the DSP and DSP CAN bus communications to simulate the hybrid electric vehicle motor drive unit with other units of communication; secondly, In order to facilitate debugging motor drive unit, the paper design of the motor drive system units and ordinary PC-communications systems. Computer use LabVIEW software platform through RS-232 serial transmission of data, will control command and control parameters (such as KP and KI) transfer control of the main chip TMS320F2812 give the motor drive unit, while the electrical motor drive unit operation Status (such as speed, current) through the RS-232 uploaded to the PC, PC use LabVIEW to receive storage and display, for the analysis of data based on experiments.
This design has completed part of the contents of the following:
(1) access to information to complete hybrid electric vehicle motor drive unit of the signal analysis, design communications signals in the CAN bus communication protocol and serial communication protocol.
(2) completed DSP-based CAN bus and serial data communication procedures in the preparation and initial debug.
(3) completed the top-LabVIEW receive and transmit programming, interface design and control speed, current and other parameters of the real-time display.
(4) motor drive unit to the channel signal acquisition before the hardware design and computer simulation.