数字信号处理器(Digital Signal Processor,DSP)在PWM整流、逆变和电动机控制等场合应用非常广泛,已经成为构建数字控制系统的核心部分之一。在进行计算机仿真时,忽略DSP作为离散型控制器的特性会带来相当的仿真误差,导致仿真结果可信...数字信号处理器(Digital Signal Processor,DSP)在PWM整流、逆变和电动机控制等场合应用非常广泛,已经成为构建数字控制系统的核心部分之一。在进行计算机仿真时,忽略DSP作为离散型控制器的特性会带来相当的仿真误差,导致仿真结果可信性降低甚至出现仿真与实验严重矛盾的情况。本文提出了一种在Simulink中对DSP进行仿真的方法,并结合三相逆变器中的空间矢量调制方法进行了仿真和实验验证。结果表明,本文提出的DSP仿真方法正确有效,并且可以将对目标系统的仿真与对目标DSP的编程统一起来,仿真系统中控制核心的运行方式与实际系统中DSP的运行特性保持一致,由此得出的仿真结果指导性更强。同时,仿真过程中编写的DSP的代码稍加修改便可以应用到现场DSP中,加快了开发速度且方便了调试和维护,应用前景良好。展开更多
The present paper deals with the development of a modular, flexible and structured block to block approach for the study of regulators by implementing the different blocks on a DSP (digital signal processor). The pr...The present paper deals with the development of a modular, flexible and structured block to block approach for the study of regulators by implementing the different blocks on a DSP (digital signal processor). The proposed low-cost approach has been applied and validated by the implementation of an industrial regulator in a real time hardware-in-the-loop simulation of a mixed islanded power network including precise models of the hydraulic system. The studied network is constituted of three different types of electrical power generation systems and a consumer.展开更多
文摘数字信号处理器(Digital Signal Processor,DSP)在PWM整流、逆变和电动机控制等场合应用非常广泛,已经成为构建数字控制系统的核心部分之一。在进行计算机仿真时,忽略DSP作为离散型控制器的特性会带来相当的仿真误差,导致仿真结果可信性降低甚至出现仿真与实验严重矛盾的情况。本文提出了一种在Simulink中对DSP进行仿真的方法,并结合三相逆变器中的空间矢量调制方法进行了仿真和实验验证。结果表明,本文提出的DSP仿真方法正确有效,并且可以将对目标系统的仿真与对目标DSP的编程统一起来,仿真系统中控制核心的运行方式与实际系统中DSP的运行特性保持一致,由此得出的仿真结果指导性更强。同时,仿真过程中编写的DSP的代码稍加修改便可以应用到现场DSP中,加快了开发速度且方便了调试和维护,应用前景良好。
文摘The present paper deals with the development of a modular, flexible and structured block to block approach for the study of regulators by implementing the different blocks on a DSP (digital signal processor). The proposed low-cost approach has been applied and validated by the implementation of an industrial regulator in a real time hardware-in-the-loop simulation of a mixed islanded power network including precise models of the hydraulic system. The studied network is constituted of three different types of electrical power generation systems and a consumer.