无刷直流电机在近红外光谱仪中的应用

介绍了无刷直流电机的工作原理及其在自制近红外光谱仪中的应用.实验结果表明应用无刷直流电机的近红外光谱仪重复性好、稳定度高.无刷直流电机调速性能好,调制频率更为稳定可靠.并且在使用时无发热现象,不必采用散热片,减少了仪器的体积和质量.     

无刷直流电机在近红外光谱仪的应用

介绍了无刷直流电机的工作原理及其在自制近红外光谱仪中的应用。实验结果表明应用无刷直流电机的近红外光谱仪重复性好、稳定度高。无刷直流电机调速性能好，调制频率更为稳定可靠。并且在使用时无发热现象，不必采用散热片，减少了仪器的体积和质量。     

嵌入式DSP在电机控制器中的应用

AnalogDevicesInc.DrFinbarrMoyniban,DrPaulKettleKettle本文着重讲解了一个为无刷直流电动机进行无传感器控制的Kalman滤波算法、以此来展示在对电机区电动势波形进行简单侧量来计算电机的速度和位置时,怎样使用DSP。在工业设备和汽车市场以及许多新的应用中,无刷直流电机正获得越来越广泛的应用。但与多数传统方案如有刷直流电机或单相感应电机相比,采用无刚直流电机会增加控制活动的复杂度。尤其是典型的无刷直流电机需要使用一些位置传感器来选择正确的换向次序。但在一些需要控制成本的应用中,增加位置传感器不太实用或无法…     

无刷直流电机数字控制系统的研究与设计

在工业的发展道路上不同时期有着不同的发展,电动机的发展带动了我国许多工业的发展,我们从传统的直流电机慢慢的发展到了无刷直流电机。无刷直流电机指的是无机械电刷和换向器的直流电机,是随着电力电子技术,电机的控制技术,和高性能永磁材料的发展而出现的一种新型的电动机。无刷直流电机的研究主要包括电动机自身设计的研究和控制系统的研究,而现在主要应用的是无刷直流电机的数字控制系统,无刷直流电机的控制系统是采用无位置传感器用软件获得转子位置信号的反电势法和相关的预定位开环换相启动法。无刷直流电机数字控制系统运行效率高,性能好,具有一定的实际意义和广阔的应用。本文我们主要论述一下无刷直流电机数字控制系统的研究与设计,对数字控制软件系统进行简单的介绍。     

无刷直流电机相序测定实用方法

无刷直流电机控制系统中采用电子换相,换相逻辑信号通常取决于位置传感器信号。针对无刷直流电机位置传感器的相序测定方法进行了研究,分析了无刷直流电机的运行原理和结构特征,阐述了无刷直流电机的控制方法,提出了一种测定无刷直流电机相序的有效方法。通过理论分析了该方法的可行性,实验证明此方法可以快速有效地确定无刷直流电机的相序关系。     

基于DSP控制的无刷直流电机在电动执行器中的使用分析

在此从无刷直流电机特性入手,分析基于DSP控制的无刷直流电机所具有的优点,从而验证其在电动执行器中应用的有效性。为更好地探讨其在电动执行器中的应用,综合运用比较分析、实验论证、图示等方法来分析DSP控制的无刷直流电机在系统及其硬件配置等方面的优势。通过对比分析可以看到其系统控制及其软硬件的配备上能够更好地适应电动执行器的功能要求,并且有利于维修养护。在互联网的背景下探讨DSP控制的无刷直流电机的系统设计及其控制等问题,从而保证其应用于电动执行器时系统控制的完整性及其有效性。     

AUIRF13205等：功率MOSFET

国际整流器公司推出采用坚固耐用TO-220 fullpak封装的车用功率MOSFET系列,适合包括无刷直流电机、水泵和冷却系统在内的各类汽车应用。     

基于FPGA的无刷直流电机控制系统仿真及研究

针对现代应用对无刷直流电机控制系统要求不断提高的问题,研究了基于FPGA的无刷直流电机控制系统,结合Matlab搭建无刷直流电机系统的仿真平台,对其不同调制方式的转矩脉动影响进行详细的分析;并采用HDL硬件语言对其无刷直流电机控制系统各模块进行了设计,仿真结果表明其能够满足电机控制系统的调速功能等要求,具有一定的应用价值。     

IR推出采用T0-220fullpak封装、坚固可靠的车用功率MOSFET

国际整流器公司（International Rectifier，IR）推出采用坚固耐用TO-220fullpak封装的车用功率MOSFET系列，适合包括无刷直流电机、水泵和冷却系统在内的各类汽车应用。     

采用STM8S的无刷直流电机控制系统的设计

根据无刷直流电机控制系统的特点,提出了基于STM8S处理器的无刷直流电动机控制系统。设计并实现了该控制系统的硬件电路,通过软件编程完成对转子位置的快速检测及电机调速。实验显示该系统的设计成本较低,运行平稳,调速性能良好。     

电子风扇专用无刷直流电机关键技术的研究

为了解决客车、城市公交车在实际使用中发动机不同温度状况下的散热问题,有效地保证发动机的正常使用温度,车载电子风扇是最佳选择。指出了电子风扇专用无刷直流电机控制电路的一些注意事项,结合具体实验,优化电路中元器件的参数,很好地保证电机稳定正常运行。     

一种数字无刷电动舵机的原理建模

运用电力电子仿真、机械仿真和控制系统仿真,充分考虑各个组件的非线性,通过对各部分的建模分析,从原理结构上建立适用于无刷直流电机和减速机构模式的导弹舵机系统精确仿真模型,可以在舵机整个工作频段和舵偏角范围进行精确仿真.通过对仿真数据与实测数据的比较,仿真曲线和实测曲线基本吻合,验证了模型的可用性.     

Three-phase modular permanent magnet brushless Machine for torque boosting on a downsized ICE vehicle

The paper describes a relatively new topology of 3-phase permanent magnet (PM) brushless machine, which offers a number of significant advantages over conventional PM brushless machines for automotive applications, such as electrical torque boosting at low engine speeds for vehicles equipped with downsized internal combustion engine (ICEs). The relative merits of feasible slot/pole number combinations for the proposed 3-phase modular PM brushless ac machine are discussed, and an analytical method for establishing the open-circuit and armature reaction magnetic field distributions when such a machine is equipped with a surface-mounted magnet rotor is presented. The results allow the prediction of the torque, the phase emf, and the self- and mutual winding inductances in closed forms, and provide a basis for comparative studies, design optimization and machine dynamic modeling. However, a more robust machine, in terms of improved containment of the magnets, results when the magnets are buried inside the rotor, which, since it introduces a reluctance torque, also serves to reduce the back-emf, the iron loss and the inverter voltage rating. The performance of a modular PM brushless machine equipped with an interior magnet rotor is demonstrated by measurements on a 22-pole/24-slot prototype torque boosting machine.     

基于有限元分析的直流电机控制策略

无轴承无刷直流电机集成了直流和交流电机的优点,具有重要的实际应用价值,针对传统悬浮力控制方法存在工作复杂、逆变器通断频繁等缺陷,为了提高磁悬浮力的控制效果,提出了基于有限元分析的无轴承无刷直流电机悬浮力控制策略。首先对无轴承无刷直流电机的结构以及悬浮力产生的原理进行了分析,然后采用有限元分析法对电机转矩和悬浮力进行计算,从而实现无轴承无刷直流电机控制,最后采用Matlab/Simulink工具对其性能进行测试与验证。结果表明,本文策略可以提高转子悬浮的稳定性,能够保证无轴承无刷直流电机的正常运行。     

New sensorless control for brushless DC motors using disturbanceobservers and adaptive velocity estimations

A brushless DC motor has been represented by a nonlinear equation. Therefore, it has been difficult to apply linear control theory to brushless DC motor systems. In this paper, to apply the linear control theory to brushless DC motor systems, the authors propose considering the nonlinear term of the equation as a disturbance and to realize a sensorless control of the brushless DC motor using both the disturbance observer and the adaptive velocity estimation. With proper pole locations of the disturbance observer, stability of the position estimation is guaranteed, and stability of the adaptive velocity estimation is also guaranteed by Popov's hyperstability theory. The experimental results show that the proposed method is very useful     

Novel Design of HID Lamp Electronic Ballast for Automotive Systems

This paper presents a high intensity discharge（HID） lamp for automotive illumination. A novel type of ballast for HID is proposed without an acoustic resonance. The system consists of high frequency DC/DC converter,DC/AC inverter（SLA2403M）, high voltage igniter and a microcontroller unit（MCU）. The proposed ballast controls the complex start-up process and constant power process by programming on the rnicrocontroller. It is verified that experimental results agree well with the calculated ones. The ballast features such functions as failure protection, line under-voltage, line over-voltage, output short circuit and disconnection protections.     

Three-dimensional finite element analysis of permanent magnetbrushless DC motor drives-status of the state of the art

This paper reviews advances in the state of the art of applying three-dimensional finite-element (3-D-FE) magnetic field computation techniques to the analysis and quantification of parameters and performance of permanent magnet (PM) brushless DC motors as components of brushless DC drives. The application of the powerful 3-D-FE formulation based on the coupled magnetic vector potential-magnetic scalar potential (CMVP-MSP) concept to a case study PM brushless DC motor with skewed permanent magnet mounts is reviewed and summarized. This large-scale simulation of such a motor drive system is shown to be successfully implementable using workstation type computer environments     

Motion control with permanent-magnet AC machines

Motion control techniques have been developed to exploit the high efficiency and extremely fast dynamic response capabilities of permanent-magnet AC (PMAC) machines. Control techniques are reviewed separately for the two major classes of PMAC machines referred to as trapezoidal (i.e., brushless DC) and sinusoidal machines. While trapezoidal PMAC machine drives are distinguished by their controls simplicity and minimal sensor requirements, sinusoidal PMAC machine drives offer opportunities for extremely smooth torque production and extended high-speed operating ranges. Advanced PMAC machine control topics including sensor elimination techniques and robust servocontrol algorithms are reviewed, concluding with a discussion of PMAC machine drive application trends     

基于DSPIC的工业控制系统的设计

介绍了一套基于直流无刷电机的工业缝纫机控制系统的设计与实现,该系统特点是以霍尔信号的位置和电机的速度进行估算,并在此基础上实现对直流无刷电机的方波控制。给出了控制系统硬件和软件的实现方法。实验结果表明：该系统的生产成本比较低,也能够满足工业缝纫机的调速范围大、动态性能好等技术指标。