【摘要】 数据交换是基于多片DSP高压变频系统的开发难点之一。文中提出了高压变频控制器多片DSP数据交换系统结构,开发了基于CAN总线的通讯接口电路和应用软件。硬件部分采用光通讯技术,提高通讯系统抗干扰能力;软件部分,通过建立不同DSP收发机制、错误处理机制和中断管理机制,实现多片DSP数据交换和分工协作。实验结果表明该方法测试数据传输速率可达1 Mbit/s,稳定可靠,可以很好满足使用要求。更多还原

【Abstract】 The data exchange is one of the most critical technology of high- voltage inverter system based on multi- chip DSP. The high voltage inverter controller multi- chip DSP data exchange system structure was first proposed in this paper,and then communication interface circuit and application software was developed based on the CAN bus. The hardware used optical communication technology to improve the communication system anti- jamming capability. Through the establishment of mechanisms for different DSP transceiver,error handling and interrupt management mechanism,the software part achieved multi- chip DSP data exchange and division of labor. The experimental results show that the method of test data transfer rates up to 1Mbit / s,it is stable and reliable,and can well meet the requirements.更多还原