闭环控制电路

具有正反转不对称补偿的超声波电机闭环控制电路

Closed-Loop Control Circuit for Ultrasonic Motor with Compensation of CW / CCW Asymmetry

本文提出一种采用闭环控制电路，控制微电机带动标尺的稿架方案.该稿架具有成本低、30行的积累误差小于0.8mm；

This paper introduces an automatic paper stand of which the scaleplate is driven by the micro machine controlled by closed cycle circuit . The paper stand is of low cost . Its accumulated error is less than 0.8 mm every 30 lines .

并且针对其独特的负载特性，在设计电流闭环控制电路的同时，还设计了电压环控制电路。

Due to the particular load characteristic , both the current loop and voltage loop control circuits are devised .

本文讨论了变速恒频电源闭环控制电路的设计。

This paper deals in detail with the design of feedback control system for variable speed constant frequency electrical power .

一种利用闭环控制电路抑制气敏元件零点漂移的设计思想、原理框图及实验结果。

The design idea , principle scheme and executive result for restricting zero drift of gas sensors by means of closed loop control circuit are reported .

设计了一种基于锁相环的速度闭环控制电路，进行电机的稳速控制，通过限流电路改变电机系统的特性，实现恒功率控制。

A speed control circuit based on phase-locked loop ( PLL ) is designed to achieve the constant speed operation , and a current-restricting circuit is designed to achieve the constant power operation .

在Matlab下建立了双闭环控制系统电路模型，给出了电压源电压控制下突加和突卸负载时的仿真结果。

The circuit model of double-loop control system was established using Matlab . The simulation results of the sudden increasing load and sudden dumping load at voltage source-voltage control .

闭环自适应控制电路

Closed-loop adaptive control circuit

在分析脉冲电源放电电流闭环控制子电路的基础上，利用状态空间平均法建立了脉冲电源系统的开环传递函数。

Base on analyzing the sub circuit of close loop control for discharging current of pulse generator , the transfer function of open loop is built by using the state-space averaging method .

为保证输出功率稳定，设计了基于电流闭环的PI控制电路。

In order to ensure the output power stability , PI control circuit based on current closed loop was designed .

重点是分析了影响成型机中加强线绳恒张力变化的各种因素，完成了恒张力闭环控制系统硬件电路和软件算法的设计与实现。

The factors that are influential to strengthen the constant tension of cotton rope in the forming machine are analyzed ; the design and the realization of hardware electric circuit and software algorithm in constant tension closed-loop control system are completed .

电路采用闭环控制，使该电路具有稳定的输出电压，并采用PWM控制方式。

The circuit uses closed-loop control strategy to make sure that it has stable output voltage , and adopt PWM control mode .

数字式现代串级调速双闭环控制系统的硬件电路主要包括，ADC采样电路、PWM控制信号输出电路、占空比设置显示电路。

The hardware of digital dual-loop control system include ADC sampling circuits , PWM control signal output circuit , Set and display duty cycle circuit .

介绍一种用于人工心脏轴流式血泵的无位置传感器无刷直流电动机闭环调速控制系统的电路设计。

A kind of closed loop timing control system based on position-sensorless control for axial blood pump of artificial heart brushless DC motor is introduced in this paper .

限流充电为恒流充电，在传统预测电流控制策略的双闭环基础上添加充电电流PI环形成三闭环控制，即主电路电流外环、直流电压PI内环和充电电流PI内环。

Current limiting charging is the constant current charging . Charging current PI loop is added in the double loop of traditional predictive current , then three closed-loop control is formed , which are current outer loop of main circuit , DC voltage inner loop and charging current inner loop .