基于增量式PID控制的数控恒流源  

Numerical Control Constant-current Source Based on Incremental PID Control

作　　者：张苏红[1] 黄韬[1,2] 王进华[1] 郑细端[1] 

机构地区：[1]福州大学电气工程与自动化学院,福建福州350108 [2]福安电机工程研究院,福建福安355000

出　　处：《现代电子技术》2011年第20期190-192,199,共4页Modern Electronics Technique

摘　　要：数控恒流源在计量、半导体、传感器等领域得到广泛应用,针对目前市场上大部分恒流源产品精度和智能化水平偏低等问题,提出了一种增量式PID控制的数控恒流源设计方法。该系统通过单片机对恒流源模块的输出进行采样,采用增量式PID控制算法进行数值处理。并通过Matlab仿真与传统PID控制算法进行对比。实验结果表明其具有分辨率高、纹波小、高精度的特性。Numerical control constant-current source is widely applied in the metrology,semiconductor,sensor and other fields.In view of problems that accuracyand intelligence of the constant-current sources availabole in the market are low,a design method of numerical control constant-current source controlled by incremental PID is proposed in this paper.The sampling about the output of constant current source module is carried out through MCU.The incremental PID control algorithm is adopted to conduct the numerical processing,and contrasted with the traditional PID control algorithm through MATLAB simulation.The experimental result shows that the system has the characteristics of high resolution,low ripple and high accuracy,and can provide constant current for relevant projects.

关 键 词：单片机 恒流源模块 场效应管 增量式PID控制 

分 类 号：TN710-34[电子电信—电路与系统] TM932[电气工程—电力电子与电力传动]