基于REC技术的DFB激光器阵列驱动电路的设计

为了实现DFB激光器阵列的智能化控制,提出了一种智能化、高精度、数字控制的驱动电路设计方案。该系统以单片机和FPGA为主要控制芯片,具有体积小、效率高、无冲击、开关保护等特点。DFB激光器阵列的输出可以由外部可调信号控制。该系统将模拟控制模型转化为数字控制模型,提高了驱动电路的性能。该系统能够实时监测DFB激光器阵列的温度和电流。电流的输出精度可以达到±0.1 mA,保证DFB激光器阵列稳定可靠地工作。该驱动电路有利于DFB激光器阵列的灵活使用。     

基于51单片机的步进电机控制系统设计与实现

结合51单片机的特点,研究设计步进电机的控制系统,以51单片机AT89S52为控制核心,选用ULN2003A芯片组成的驱动电路,提出一种步进电动机控制系统设计方案.完成控制系统的硬件电路设计和软件编程,实现步进电机的控制要求.该系统简便易操作、控制精度高,具有较高的使用价值.     

基于单片机的步进电机系统设计

文章介绍一款基于单片机控制的步进电机电路设计,对步进电机完成正反转、启停、转速控制等基本功能,利用单片机控制电机驱动芯片、键盘实现功能切换,采用发光二极管显示步进电机的各个工作状态。对步进电机、单片机等硬件系统工作原理进行详细说明,同时对硬件电路进行仿真调试。本设计具有思路清晰、高可靠性、较强稳定性等特点,具有广泛的应用价值。     

基于89C51单片机的步进电动机控制系统设计

为了实现对步进电动机控制的需求,提出了一种基于89C51单片机控制的步进电动机系统设计方案,并完成步进电动机系统的硬件和软件设计。单片机采用89C51系列,在单片机与步进电机之间选用74LS04与4N29组成的驱动电路,实现对单片机的保护。该系统的软件部分采用进行C编程,能够完成对步进电动机的精确控制。实际应用表明,所设计的控制系统具有操作简便、控制精度高、可靠性好等特点,具有较高的使用价值。     

基于AT89S52的声音导引系统设计

介绍了声音导引系统的设计与实现。该系统包括单片机系统电路、声源调制电路、接收器电路、步进电机驱动电路、声光提示电路等。采用两块单片机（AT89S52）分别作为可移动的声源的检测和控制核心。由单片机1根据三个接收器接收声源信号的先后时间确定声源当前的位置,再由无线发送给单片机2。单片机2利用ASSP芯片（型号MMC-1）控制电机的转速实现可移动声源的运动控制,并且移动到住后给出声光提示。该电路设计方法简单、功耗低、性价比高,经调试可实现声音导引系统的精确控制。     

简易自动寻迹小车控制器设计

该文主要介绍一种基于单片机的简易自动寻迹小车控制器设计,其硬件主要包括光电传感器介绍与电路设计、两轮驱动介绍与硬件设计以及电源电路设计,软件主要介绍控制方法和策略。该小车采用RPR220光电发射接收一体式传感器根据光线对不同颜色反射红外线强度的不同,来区分白线和黑线,利用LL298N直流电机驱动芯片完成对小车轮的驱动。...     

一种新的可编程红外焦平面驱动电路系统设计

介绍了一种新的基于单片机和FPGA的可编程的驱动电路系统。在该系统中,偏置电压的产生和调节是利用单片机控制来实现的;而对于脉冲驱动,则先由FPGA产生初始的脉)中驱动波形,而后结合单片机对其进行电平提升和转换,最终得到符合要求的驱动脉冲信号。实验结果表明,该系统较传统的设计具有精度高、灵活性强以及体积小和功耗低等特点。     

高可靠航空永磁无刷直流电机伺服控制系统设计

本文针对航空机电作动器高可靠性要求,设计了一套永磁无刷直流电机伺服控制系统,详细介绍了系统构型、关键参数设计和保护电路设计。采用电气隔离方式,实现了电机功率驱动部分和算法控制部分的隔离,抑制了故障蔓延。通过设计电机过/欠压保护、电流保护和软启动保护工作机制,实现了电机驱动的高可靠性工作。实验结果表明,本文设计的永磁无刷直流电机伺服控制系统功能性能完善、信号采集精度高、电机保护机制完备,具有很高的可靠性和实用性。     

磁旋转偏码器在测速系统中的应用

给出一种以8051微型单片机计算机为总体控制的磁旋转编码器测速系统，详细介绍了测速系统的磁头设计，放大整型电路设计，倍频电路设计，单片机控制及电显电路的设计和软件设计流程。     

基于RFID的单片机系统设计

本文基于RFID技术设计了一个单片机系统,该系统主要实现对于Mifare1 IC卡的读写控制。本文首先概述了RFID技术与RFID系统的结构,在此基础上设计了单片机控制实现的读写器模块。文章分别对MFRC522接口电路设计和读写卡流程设计做了简要概述。实验板测试阶段着重对卡片的读、写、修改密码进行实验。     

A five-leg inverter for driving a traction motor and a compressor motor

This paper presents an integrated inverter for speed control of a traction motor and a compressor motor to reduce the compressor drive cost in electric vehicle/hybrid electric vehicle applications. The inverter comprises five phase-legs; three of which are for control of a three-phase traction motor and the remaining two for a two-phase compressor motor with three terminals. The common terminal of the two-phase motor is tied to the neutral point of the three-phase traction motor to eliminate the requirement of a third phase leg. Further component reduction is made possible by sharing the switching devices, dc bus filter capacitors, gate drive power supplies, and control circuit. Simulation and experimental results are included to verify that speed control of the two motors is independent from each other.     

Novel motors and controllers for high-performance electric vehiclewith four in-wheel motors

We have, in accordance with new concepts, undertaken the development of a high-performance electric motor vehicle, designated as the IZA. The main performance features of the IZA are a maximum speed of 176 km/h, a range of 548 km per charge at a constant speed of 30 km/h, and acceleration from 0 to 400 m in 18 s. We have developed a direct driving in-wheel motor and controller in order to achieve high performance characteristics. The in-wheel motor is composed of an outer rotor with a rare earth permanent magnet (Sm-Co) and an inner stator. The motor drive controller consists of a three-phase inverter and a microprocessor-based controller. The maximum output and maximum torque of each total drive system, including motor and inverter, are 25 kW and 42.5 kg·m, respectively, and the total efficiency of the drive system is over 90% at the rated speed. The performance of the motor, controller, and drive system have been confirmed by numerous simplex and vehicle transit tests. This paper describes the design concepts, configuration, and performance of the motor, controller, and drive system developed for this high-performance electric vehicle     

基于Infineon XC2267的电机控制系统设计

在电动汽车的研究当中,驱动电机及其控制系统设计尤为重要,文中基于英飞凌公司的16位微控制器芯片XC2267,设计了电动汽车用永磁同步电机磁场定向矢量控制系统。对控制系统部分硬件电路进行了设计,并在Simulink仿真环境下建立电机控制系统的的仿真模型。仿真结果表明,系统设计合理、电机运行响应快、稳定性好,而且对永磁同步电机实际控制系统具有一定的指导意义。     

Comprehensive drive train efficiency analysis of hybrid electric and fuel cell vehicles based on motor-controller efficiency modeling

From the point of view of overall hybrid electric vehicle (HEV) and fuel cell vehicle (FCV) drive train efficiency, the research focus is mainly on the efficiency analysis of the power train components, which prove to be an integral part of modern HEV and FCV drive trains. The critical portion of any HEV electrical system consists of a power electronic converter (inverter) and a suitable traction motor. Thus, the efficiency analysis of the inverter/motor is of prime importance for the calculation of the overall efficiency of the drive trains. This paper aims at modeling the efficiencies of the traction motor/controller through efficiency maps. Efficiency maps are a convenient way to represent motor drive systems of large and complex systems, like that of a HEV. The paper uses the advanced vehicle simulator (ADVISOR) software for the simulations of a large-sized car, similar to a Chevy Lumina, over the urban dynamometer-driving schedule and highway fuel economy test drive cycles. Furthermore, the paper investigates the traction motor efficiency maps and consequent overall drive train efficiencies of commercially available Honda Insight and Toyota Prius HEVs. In all the case studies, the aim is to analyze the overall drive train efficiency over the city and highway drive cycles based on the inverter/motor efficiency maps.     

电动汽车用充电器与驱动器一体化拓扑研究

摘要：针对电动汽车驱动与充电系统分离所带来的诸多问题,提出了一种电动汽车驱动和充电系统一体化电力电子拓扑结构及相应控制策略, 该拓扑正向工作时驱动电机为电动状态、反向工作时给蓄电池充电为充电状态。一体化拓扑在充电时共用驱动系统的主电路和控制电路,无需额外增加AC/DC和DC/DC充电器,提高了功率密度、降低了产品成本、降低了系统故障率、减少了安装空间等,解决了传统电动汽车驱动与充电分离带来的问题。最后针对提出的一体化拓扑和控制策略进行了实验验证,试验中所采用电机型号为80CB050C,结果表明该一体化拓扑在充电实验时直流母线电压纹波在6.9%附近,经过Buck电路中电机绕组进一步滤波后,充电电压及电流纹波基本稳定在0.3%以内,验证了所提方法的正确性和可行性,具有一定的应用前景和实用价值。     

An induction motor drive using an improved high frequency resonantDC link invertor

An induction motor drive that uses an improved high-frequency resonant DC link inverter is presented. The resonant circuit was systematically analyzed first to establish the criteria for initial current selection, and a circuit to establish the bidirectional initial current was then proposed. The proposed current initialization scheme solves voltage overshoot and zero crossing failure problems in the ordinary resonant DC link inverters. A three-phase 3 kW insulated-gate-bipolar-transistor (IGBT) based 60 kHz resonant link inverter has been constructed and successfully tested with an induction motor drive. The speed control system is implemented using two microprocessors. Experimental results are presented to show superior operation of the proposed resonant DC link inverter drive     

A novel approach to practical matrix converter motor drive system with reverse blocking IGBT

This paper proposes a novel control strategy and a protection circuit and shows the advantage of utilizing a newly developed reverse blocking insulated gate bipolar transistor (RB-IGBT), to solve several practical problems of the matrix converter. The proposed control strategy is based on a virtual indirect control method with a virtual rectifier and a virtual inverter. Pulse-width modulated (PWM) pulses for the matrix converter are obtained by combining PWM pulses for the virtual rectifier and inverter. As a result, the control part of the input current and output voltage can be clearly separated. Thus, the conventional inverter control algorithms can be applied to the virtual inverter control. The advantage of this method is confirmed by experimental results with a 22-kW induction motor drive system. Good sinusoidal waveforms are obtained for the input and output currents, and the total harmonic distortion (THD) of the input and output current are 5.1% and 1.4%, respectively. The conduction loss of the RB-IGBT is decreased to about two-thirds of the conventional ac switch with series connection diode. Thus, the converter loss is about a half to the conventional PWM rectifier-inverter system with the same capacity. Furthermore, the protection problem is solved by a dynamic clamp method without an electrolytic capacitor. This protection circuit directly dissipates reactive load energy by dynamic clamp operation of an IGBT.     

A simplified three-phase zero-current-transition inverter with three auxiliary switches

Most existing three-phase soft-switching inverters with fewer than six auxiliary switches have fundamental drawbacks in performance. There exist a few soft-switching inverters with six auxiliary switches that can potentially achieve desirable performance, but are penalized with the high cost and large size associated with the auxiliary switches. This paper proposes a zero-current-transition (ZCT) inverter topology that requires only three auxiliary switches. Each phase of the proposed circuit employs one auxiliary switch and one LC resonant tank to assist switching transitions. With considerable reduction in device count, cost, and size, the proposed topology realizes zero-current turn-off for all main switches and auxiliary switches, and provides soft commutation for all diodes. Meanwhile, it requires no modification to normal pulsewidth modulated (PWM) algorithms. The operation principles, design and control guidelines, and an analysis using the state-plane technique are presented. Based on the proposed topology, a 50-kW three-phase prototype inverter has been developed for electric vehicle propulsions, and tested to the full power level with a closed-loop induction motor drive system. Experimental results on the 50-kW prototype are provided to verify the proposed concept in high-power AC adjustable speed drive applications.     

直流变频空调器室外风机保护措施的改进

本文设计了一种直流变频率凋室外风机的控制电路，并针对沿海风大，风机容易反向发电的特点，对该电路的保护进行了改进，评给出了室外风机的驱动程序流程。     

一种基于超级电容快速充电的循迹小车设计

文章利用MSP430F149单片机、TPS63020芯片、TCRT5000红外传感器、无线充电模块、计时控制电路、自启动电路、DC DC模块和直流电机等模块设计并制作了一个可循迹的电动小车动态无线充电系统,可通过灯光显示是否处于充电状态,小车检测到发射线圈停止工作时可自行启动,并在行驶期间实现动态充电,设计了电容"快充慢放"电路,能够完成预期功能,在电能输出效率最优情况下沿引导线稳定行驶。