基于霍尔传感器转速测量电路研究与设计

本文提出了基于霍尔传感器的转速测量电路,通过在直流电机的转子上安装金属齿轮,在电机的带动下模拟被测物体的转动,使得霍尔传感器两端产生感应电动势,信号调理电路将其转换成数字脉冲信号,单片机通过统计脉冲个数从而实现转速的测量。     

基于STM32的无刷直流电机控制器硬件电路设计及实验研究

以STM32F103C8T6为核心,设计了无刷直流电机控制器硬件电路。电路主要包括IR2310构成的PWM驱动电路、IRF3808构成的逆变电路、增量式旋转编码构成的速度反馈电路。控制器具有CAN和RS232通信接口,可与计算机或PLC构成速度或位置伺服系统。利用由xPC目标搭建的半实物仿真平台对PI参数进行整定。测试了控制器的速度伺服响应性能,给定速度为2400rpm时,控制器响应时间为0.32s。实验结果表明,系统工作可靠,稳定性好,响应速度快,可以满足上肢康复机器人要求。     

基于转子电流的双馈风机模糊控制无速度传感器设计

本文针对传统PI控制器调节速度慢的缺点,设计了基于转子电流的双馈风机模糊控制无速度传感器。该设计将参数自整定模糊PI控制技术引入转子速度估测模型中,以提高转子观测器的跟踪效果和动态特性。利用Matlab/Simulink搭建了仿真模型,仿真结果表明:基于转子电流的双馈风机模糊控制无速度传感器能够快速准确地估测转子速度和位置角度,具有良好的动态特性,对电机参数的变化具有一定的抗干扰能力。     

新能源电动车控制器设计方法研究

研究了基于ATMEGA16单片机控制纯电动汽车的PWM调速控制系统的设计方法。设计开发了以ATMEGA16单片机为核心的控制器、IGBT功率驱动模块及能量最优程序代码;完成了利用无刷直流电机的霍尔信号与逻辑驱动信号的关系来控制电机的转动和方向;利用模块的自带功能来实现电机的限流保护、欠压保护、短路保护等保护功能,具有效率高,电路简单,成本较低的优点。     

基于TMS320F2812无刷直流电机控制系统设计

设计一种基于TMS320F2812的无刷直流电机控制系统;详细介绍了转子位置检测电路、相电流检测电路、驱动电路以及保护电路设计;给出相应的硬件电路.该系统采用三环控制.其中,位置环采用PI调节器;速度环采用参数自整定模糊PID控制:电流环采用电流滞环控制.该设计方案电路简单,可靠性强,具有较高的应用价值.同时,实验结果也验证了该方法的有效性.     

基于预测函数控制的无刷直流电机控制研究

由于无刷直流电机调速系统具有非线性、多变量、不确定时变系统等特点,在高控制精度和快响应速度的条件下,传统的PID控制方法已经不能满足无刷直流电机调速系统的要求,如果其中的参数变化超过一定范围,整个控制系统会出现不稳定。在分析无刷直流电机（BLDCM）的数学模型并将其简化的基础上,提出了一种无刷直流电机的预测函数控制（PFC）策略,并进行了Matlab仿真试验。该BLDCM系统采用双闭环调速,速度环中采用PFC控制,计算得到参考电流值作为电流环的输入,电流环采用离散PI控制,由滞环电流跟踪型PWM逆变器的原理实现电流控制。仿真试验结果显示,这种无刷直流电机调速系统可以取得良好的控制效果。     

基于FPGA的无刷直流电机数字控制方法研究

为了实现简单且高效的无刷直流电机（BLDC）驱动系统,本文提出了一种简单新型的基于FPGA的数字脉冲宽度调制（PWM）控制器的模型和匹配的控制算法,该控制器将梯形磁通分布的BLDC电机看作是一个数字系统,通过低功率和高功率的交替使用进行速度调节,非常便于设计实现。此外,提出的设计只使用直流环节的一个电流传感器,减少了成本和硬件的复杂性。并通过模拟实验对提出的控制方法进行了证实,结果显示提出方法的最大误差保持低于5%。因此,这种控制技术非常适合不需要高精度的应用。     

基于MATLAB的无刷直流电机控制系统建模与仿真

在分析了无刷直流电机（BLDCM）数学模型的基础上,并在MATLAB/SIMULINK环境下,把功能模块和S函数相结合,建立了BLDC控制系统的仿真模型。其中控制器采用传统的PI控制器,并在t=0.2s突加3N＊m负载,其仿真结果与理论分析一致,验证了该控制系统设计的有效性、正确性和良好的静、动态性,对实际无刷直流电机控制系统的设计具有指导意义。     

应用于裁断机中无刷直流电机调速系统的智能算法研究

针对常规PI在无刷电机调速中控制精度低及动态性能差,无法满足裁断机对动力辊电机速度控制要求,本文提出了一种自适应模糊PI控制方法。该方法应用于无刷直流电机双闭环控制的速度外环控制,提高了无刷直流电机的控制精度和动态响应性能。通过Matlab进行仿真,仿真结果表明,采用自适应模糊PI控制相对常规PI控制,无刷直流电机的调速系统具有很好的动态和静态性能,快速响应,超调量小,抗干扰能力强,鲁棒性好。     

基于ARM的直流电机数字式电子调速器设计

设计了一种基于ARM的直流电机数字式电子调速器。本设计采用H桥电机驱动电路,光电编码器作为传感器检测电机的转速,以K60作为控制器,采用PI控制算法,利用PWM控制方案驱动H桥电路。控制器完成与上位机的通讯,实时检测控制效果。实验结果显示,本设计能实时调控电机转速,具有超调量小,调整时间短,无转速静态误差的特点。     

A high-performance sensorless indirect stator flux orientation control of induction motor drive

A new method for the implementation of a sensorless indirect stator-flux-oriented control (ISFOC) of induction motor drives with stator resistance tuning is proposed in this paper. The proposed method for the estimation of speed and stator resistance is based only on measurement of stator currents. The error of the measured q-axis current from its reference value feeds the proportional plus integral (PI) controller, the output of which is the estimated slip frequency. It is subtracted from the synchronous angular frequency, which is obtained from the output integral plus proportional (IP) rotor speed controller, to have the estimated rotor speed. For current regulation, this paper proposes a conventional PI controller with feedforward compensation terms in the synchronous frame. Owing to its advantages, an IP controller is used for rotor speed regulation. Stator resistance updating is based on the measured and reference d-axis stator current of an induction motor on d-q frame synchronously rotating with the stator flux vector. Experimental results for a 3-kW induction motor are presented and analyzed by using a dSpace system with DS1102 controller board based on the digital signal processor (DSP) TMS320C31. Digital simulation and experimental results are presented to show the improvement in performance of the proposed method.     

Sensorless field-oriented control for double-inverter-fed wound-rotor induction motor drive

A novel control technique for sensorless vector control operation of a double-inverter-fed wound-rotor induction motor is presented. Two current controllers control the stator-side currents based on a vector control algorithm. Another V/f-type flux and frequency controller controls the rotor-side frequency directly. A novel frequency command profile for the rotor-side controller is suggested to make this sensorless drive operation reliable and reduce dependence on motor parameters at any rotor speed. A complete inverter power flow analysis is presented to show that the drive can deliver full torque from 0- to 2-p.u. speed for either direction of rotation. Thus, double the rated power can be extracted from the induction motor without overloading it. The proposed algorithm allows the drive to start on-the-fly without any rotor transducer. Results from a prototype 50-hp drive are presented.     

高压断路器三相永磁无刷直流电机机构控制算法研究

针对高压断路器三相永磁无刷直流电机机构,研究了不同控制策略下电机操动机构的运动特性.考虑高压断路器的分、合闸操作过程,建立了永磁无刷直流电机操动机构运动控制系统的仿真模型,采用数字式双闲环控制,内环为电流环,采用PI控制,外环为速度环,基于传统PID控制器、单神经元PID控制两种不同控制策略控制.通过对伺服控制系统的仿真分析得到了电机操动机构速度跟踪控制特性.结果表明,单神经元PID控制器能够较好的实现触头速度的跟踪控制,使其按理想运动特性曲线运动,是一种较理想、有效的控制方法.     

基于单片机的直流电机调速器设计与仿真

以单片机控制数模转换芯片DAC0832实现对直流电机的转速控制,并利用KEIL软件和Proteus软件进行仿真实验,结果表明该调速器系统能实现对直流电机的转动方向和不同档位的转速控制,可应用于家庭小型风扇电机的转速控制.     

用可编程模拟器件实现直流伺服电机的速度控制

介绍了可编程模拟器件在模拟调速系统中的应用，结合一个具体实例，给出了如何用ispPACl0实现直流伺服电机的速度调节器。     

Dynamic control of electronic differential in the field weakening region

A simple and dynamic electronic differential control method for an outer rotor motor driven electric vehicle based on fuzzy gain scheduling of PI gains method is proposed for constant torque and power region operation using brushless direct current (BLDC) machine. The proposed method is quite insensitive to torque fluctuations and transient speed oscillations due to surface mounted permanent magnet (SMPM) BLDC machines constraints in the field weakening region. To improve the dynamics and stability of the electronic differential system and eliminate the skidding of the wheels and reduce the heating of electric machine in the wide speed range operation, a robust control method is developed. Moreover, PI controller gains are updated continuously by fuzzy gain scheduling approach which has phase advance angle, steering angle and measured speed as controller input parameters in order to eliminate the errors caused from the variable road conditions and torque oscillations in the field weakening region. The proposed method is implemented with 2 × 1.5 kW BLDC motor drive controlled by a TMS320F28335 digital signal processor (DSP). The experimental results show that the proposed method exhibits greater stability under various load, road and vehicle speed conditions.     

Design and Realization of Stand-Alone Digital Fractional Order PID Controller for Buck Converter Fed DC Motor

The aim of paper is to employ digital fractional order proportional integral derivative (FO-PID) controller for speed control of buck converter fed DC motor. Optimal pole-zero approximation method in discrete form is proposed for realization of digital fractional order controller. The stand-alone controller is implemented on embedded platform using digital signal processor TMS320F28027. The five tuning parameters of controller enhance the performance of control scheme. For tuning of the controller parameters, dynamic particle swarm optimization technique is employed. The proposed control scheme is simulated on MATLAB and verified by experimental results. Performance comparison shows better speed control of separately excited DC motor with the realized digital FO-PID controller than that of the integer order PID controller.