基于DSP和CAN总线的大载质量运输设备电制动器优化设计

The optimal design of electric brake for the heavy load transport equipment based on DSP and CAN bus

针对大载质量物流运输设备存在制动延迟严重、制动效率低的问题,基于数字信号处理器(DSP)和CAN总线对大载质量运输设备电制动器进行优化设计。首先优化DSP结构,将其分为消息控制和CAN总线内核连通两部分,采用哈佛总线结构,使其内部程序和数据完全隔离,互不干扰;然后优化CAN总线,将其分为物理层、应用层和数据链路层,并将传输帧格式进一步升级,增加格式帧类型,从而提高其转换能力;最后根据DSP和CAN总线优化结构,建立同步集成机制,实现电制动器整体优化。仿真分析结果表明,优化后的电制动器在无干扰状态下制动延迟降低了27%,有干扰状态下制动延迟降低了35%,电制动器制动效果得到提升。

Aiming at the serious braking delay and low braking efficiency of current heavy-duty logistics transportation equipment,it presents an optimized design method for electric brakes of heavy-duty transportation equipment based on DSP and CAN bus.Firstly it optimizes the DSP processor structure,divides the structure into a message control part and a CAN bus communication part,sets different frequency band divisions and implement brake data division according to DSP arbitration.Based on a layered structure it optimizes the CAN bus transmission part,divides the part into physical layer,application layer and data link layer,and upgrades the transmission frame format to increase the format frame type,improves its conversion capability.Based on the current DSP and CAN bus optimization structure,it establishes a synchronous integration mechanism to achieve electrical Overall brake optimization.Simulation analysis data confirms that the optimized electric brake has a 27%reduction at braking delay under non-interfering state and a 35%reduction at braking delay under a high-frequency interference state,and the overall braking effect is improved.