The interrupt response process of embedded system based on Altera company's Nios Ⅱ soft - core and expenses under different processor configurations will be presented in order to achieve full - digital control of accelerator magnet power supplies and improve real - time of the control system. After that , configuration methods that can improve interrupt performance are given and tested in the development board. Finally, test routines and test results of different configurations are shown and test results indicate that Vectored Interrupt Controller be applied to digital power control system can greatly reduce the interrupt overhead and fulfill real - time requirement of the system.%为实现加速器电源的全数字化控制,提高数字电源控制系统的实时性,介绍了基于Altera公司NiosⅡ软核构建的嵌入式系统对于中断的响应过程,以及不同处理器配置下的中断开销,实验总结出了提高其中断性能的配置方式并对不同配置下的中断性能进行了实际测试、给出了部分测试程序和测试结果.测试结果表明将矢量中断控制器应用到数字电源的控制系统能大大减少系统的中断开销,满足数字电源控制系统的实时性要求.
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