针对目前脉冲增量插补算法所得到的数控机床进给运动的精度和速度较低、而数字采样插补只适合于闭环控制系统的问题,提出一种采用高速数字信号处理器(Digital Signal Processor,DSP)实现数据采样软件粗插补,使用大规模可编程逻辑器件(Co...针对目前脉冲增量插补算法所得到的数控机床进给运动的精度和速度较低、而数字采样插补只适合于闭环控制系统的问题,提出一种采用高速数字信号处理器(Digital Signal Processor,DSP)实现数据采样软件粗插补,使用大规模可编程逻辑器件(Complex Programmab1e Logic Device,CPLD)实现数据采样硬件精插补.通过对CPLD硬件插补器工作原理分析,设计了数字微分器(Digital Differential Analyzer,DDA)插补算法控制器、方式控制器、四倍频鉴向控制器等关键器件.通过波形仿真分析证明该方法可应用于步进电机开环数控系统和脉冲式全数字交流伺服系统,对于提高系统的性能指标具有一定的实用价值.展开更多
Digital control of a general-purpose switching power supply is one of the key technologies to perform the high reliability and the intelligent function demanded for the next generation. The contribution of this paper ...Digital control of a general-purpose switching power supply is one of the key technologies to perform the high reliability and the intelligent function demanded for the next generation. The contribution of this paper is the development of a digital control-based switching power supply. In the developed system, the generation method of the optimal voltage reference to eliminate the limit cycle oscillation of output voltage due to the AD/DA resolution is proposed. In the proposed method, the variation of the input power source voltage can be also compensated. The effectiveness of the proposed optimal reference generation method is experimentally verified.展开更多
文摘Digital control of a general-purpose switching power supply is one of the key technologies to perform the high reliability and the intelligent function demanded for the next generation. The contribution of this paper is the development of a digital control-based switching power supply. In the developed system, the generation method of the optimal voltage reference to eliminate the limit cycle oscillation of output voltage due to the AD/DA resolution is proposed. In the proposed method, the variation of the input power source voltage can be also compensated. The effectiveness of the proposed optimal reference generation method is experimentally verified.
