摘要
提出了一种采用现场可编程门阵列(FPGA)实现数字化高精度PWM型DC/DC的方案,介绍了基于FPGA的DC/DC数字控制器中A/D转换、数字PID控制器、数字PWM的功能及实现,重点描述了采用混合PWM方法实现高分辨率、高精度数字PWM的设计。仿真结果表明数字PWM达到8位分辨率,1MHz的输出频率。该设计实现了系统的高速动态响应,达到精确控制的良好效果。
A novel high-precision digital-PWM DC/DC converter＇s controller is designed, which is implemented by the Field Programmable Gate Array （FPGA）. The functions and the implementations of digital A/D converter, digital PID controller and digital PWM are introduced. Hybrid PWM method is particularly described to realize the high- resolution and high-precision digital PWM design .The simulation result indicates that the digital PWM has 8-bit resolution, 1 MHz output precision. It has good effects on dynamic response and the precision control of the system.
出处
《电测与仪表》
北大核心
2009年第1期77-80,共4页
Electrical Measurement & Instrumentation
