利用FPGA的增量式PID控制的研究

The design of increasing PID controller based on FPGA

介绍一种基于现场可编程逻辑门阵列(FPGA)的高精度增量式数字PID控制器的设计方法。首先,对增量式数字PID控制的原理和设计中使用的算法进行分析,然后用自顶向下的方法进行VHDL语言编程。为了提高整个设计模块的控制精度,采用16位定点运算的方法进行PID控制器的设计。仿真结果表明,该设计方法是可行的,设计模块是正确的。

A high-precision increasing PID controller based on FPGA is introduced. At first,increasing PID controller＇s principle and PID algorithm are introduced. Then use VHDL to finish the top-down design of the controller, with the assistance of the Quartus6. 1. In order to improve the precision of the control modules, use 16 fixed-point of computing the PID controller of the design, and optimize the design. Simulation results show the effectiveness of the method.