本文介绍直流电机的调速原理，在此基础上，以AT89C51单片机为控制核心，设计了直流电机调速控制系统的外围电路，软件的实现上采用PI（比例-积分）控制算法，给出程序流程图。该调速系统容易实现，成本低廉，具有很好的实用价值-This article describes the principle of DC motor speed control, on this basis to AT89C51 single-chip microcomputer to control the core of t

基于比例积分的蔡氏电路控制仿真，第一平衡点处镇定-Chua s circuit based on proportional integral control simulation, the first stabilization of the equilibrium point

从数字电路角度，分析PI(比例和积分）环路滤波电路所组成的闭环控制环路的传输函数以及误差传输函数的形状，从中可以看书环路的peaking，3db带宽以及稳定性等性能-From the perspective of digital circuits, analyze the PI（propotional & integral) loop filter s closed-loop transfer function as well as the error transfer function, fr

PID算法在设计产品中非常重要，PID（比例电路，积分比例电路，微分比例电路），(The PID algorithm is very important in the design of products, PID (proportional circuits, integral scale circuits, differential scale circuits),)

用LabVIEW实现比例积分电路的仿真，帮助学生更加生动形象的理解理论知识(Using LabVIEW to Realize the Simulation of Proportional-integral Circuit,Help students to understand theoretical knowledge more vividly.)