The digital comparator designed with FPGA generates several PWM current waveform synchronously,to realize the step angles even division control for four-phase stepping motor.
并通过FPGA设计的数字比较器,同步产生多路PWM电流波形,实现对四相步进电动机转角进行均匀细分控制。
The DC motor control circuit by FPGA and the design method of digital comparator with VHDL are introduced.
针对基于CPU的脉宽调制控制的不足,给出一个基于FPGA的脉宽调制直流电机控制方案,提出FPGA电机控制电路和数字比较器的VHDL设计方法。
An improved magnitude comparator in switch-level;
一种改进的开关级数字比较器
The magnitude comparator designed with FPGA generates several PWM current waveform synchronously,to realiz the step angles even division control for four-phase stepping motor.
利用FPGA中的嵌入式EAB构成LPM_ROM存放步进电机各相细分电流所需的PWM控制波形数据表,并通过FPGA设计的数字比较器同步产生多路PWM电流波形,实现对四相步进电机转角进行均匀细分控制。
This article, in which a numerical comparison task paradigm was used, designed two experiments to study the characteristics and Influencing factors to solve proportional reasoning problems with different comparison difficulties for 4 to 6 younger children.
文章采用“数字比较任务”，设计了两个实验研究4～6岁低龄儿童解决不同难度比例推理问题的特点及其影响因素。