Quasi-PID control method that is able to effectively inhibit the inherent tracking error of PI control method is proposed on the basis of a rounded theoretical analysis of a model of switching power amplifiers (SPAs)....Quasi-PID control method that is able to effectively inhibit the inherent tracking error of PI control method is proposed on the basis of a rounded theoretical analysis of a model of switching power amplifiers (SPAs). To avoid the harmful impacts of the circuit parameter variations and the random disturbances on quasi-PID control method, a single neuron is introduced to endow it with self-adaptability. Quasi-PID control method and the single neuron combine with each other perfectly, and their formation is named as single-neuron adaptive quasi-PID control method. Simulation and experimental results show that single-neuron adaptive quasi-PID control method can accurately track both the predictable and the unpredictable waveforms. Quantitative analysis demonstrates that the accuracy of single-neuron adaptive quasi-PID control method is comparable to that of linear power amplifiers (LPAs) and so can fulfill the requirements of some high-accuracy applications, such as protective relay test. Such accuracy is very difficult to be achieved by many modern control methods for converter controls. Compared with other modern control methods, the programming realization of single-neuron adaptive quasi-PID control method is more suitable for real-time applications and realization on low-end microprocessors for its simple structure and lower computational complexity.展开更多
提出了一种基于双数字信号处理器(digital signal processor,DSP)与复杂可编程逻辑器(complexprogrammable logic device,CPLD)的微机继电保护测试仪,分析了装置内高精度信号发生主控模块和人机交互模块中各硬件电路的原理及功能,概述...提出了一种基于双数字信号处理器(digital signal processor,DSP)与复杂可编程逻辑器(complexprogrammable logic device,CPLD)的微机继电保护测试仪,分析了装置内高精度信号发生主控模块和人机交互模块中各硬件电路的原理及功能,概述了功率放大电路及其保护、自检电路的设计,阐述了主控模块的系统程序设计方法并定义了内部通信协议。装置采用嵌入式实时操作系统设计人机交互系统软件,以确保监控的实时性。基于双DSP与CPLD的微机继电保护测试仪体积小,质量轻,运行可靠,能够满足各种常规继电器和微机保护装置的测试要求。展开更多
文摘Quasi-PID control method that is able to effectively inhibit the inherent tracking error of PI control method is proposed on the basis of a rounded theoretical analysis of a model of switching power amplifiers (SPAs). To avoid the harmful impacts of the circuit parameter variations and the random disturbances on quasi-PID control method, a single neuron is introduced to endow it with self-adaptability. Quasi-PID control method and the single neuron combine with each other perfectly, and their formation is named as single-neuron adaptive quasi-PID control method. Simulation and experimental results show that single-neuron adaptive quasi-PID control method can accurately track both the predictable and the unpredictable waveforms. Quantitative analysis demonstrates that the accuracy of single-neuron adaptive quasi-PID control method is comparable to that of linear power amplifiers (LPAs) and so can fulfill the requirements of some high-accuracy applications, such as protective relay test. Such accuracy is very difficult to be achieved by many modern control methods for converter controls. Compared with other modern control methods, the programming realization of single-neuron adaptive quasi-PID control method is more suitable for real-time applications and realization on low-end microprocessors for its simple structure and lower computational complexity.
文摘提出了一种基于双数字信号处理器(digital signal processor,DSP)与复杂可编程逻辑器(complexprogrammable logic device,CPLD)的微机继电保护测试仪,分析了装置内高精度信号发生主控模块和人机交互模块中各硬件电路的原理及功能,概述了功率放大电路及其保护、自检电路的设计,阐述了主控模块的系统程序设计方法并定义了内部通信协议。装置采用嵌入式实时操作系统设计人机交互系统软件,以确保监控的实时性。基于双DSP与CPLD的微机继电保护测试仪体积小,质量轻,运行可靠,能够满足各种常规继电器和微机保护装置的测试要求。
