一种低功耗三相无刷电机驱动控制器的设计

介绍了一种基于数字信号逻辑运算理论的低功耗三相无刷电机驱动控制器。调速PWM信号、换向逻辑、霍尔位置信号等输入信号经运算处理后,产生6路与电机换相顺序相对应的控制信号,用来控制三相全桥驱动电机负载。该驱动控制器具有静态电流小、输出电流大、抗干扰能力强、集成过流保护等特点,可广泛应用于三相电机控制、伺服电机驱动、万向节控制等领域。     

高压变频器在增安型无刷励磁同步电动机上的应用

无刷励磁同步电动机由于没有滑环、碳刷等可能产生火花的环节,在化工、煤矿等具有爆炸性环境的场所有着较为广泛的应用本文基于本公司成功的改造无刷励磁同步电动机的经验,对无刷同步电动机在变频运行中所遇到的各种问题进行了详细的分析.并提出了解决方法,使变频器能够驱动无刷同步电动机可靠、经济地调速运行。     

基于F2407aDSP的全数字混合动力电动汽车驱动系统的设计

在50kW混合动力电动汽车驱动系统中，本文采用了Buck＋Full_bridge的电路结构。同时，由F2407aDSP构成的全数字控制系统，实现了电动、发电等工作模式。实验结果表明，该系统性能可靠，满足混合动力电动汽车的驱动要求。     

Design of BLDCM Driving and Control System for Motorized Treadmill

To satisfy the requirement of developing a new generation of motorized treadmill for a famous domestic manufacturer, a brushless DC motor （BLDCM） driving and control system for motorized treadmill is developed. High integration and reliability of this system are ensured under the condition that intelligent power module （IPM） is used and the protection module is included. Periodic current control method is applied to reduce the average current flowing through the armature winding of the motor when the treadmill is required to start with low speed while large load is added. Piecewise proportion-integration-differentiation （PID） control algorithm is applied to solve the problem of speed fluctuation when impulse load is added. The motorized treadmill of a new generation with the driving and control system has the advantages of high reliability, good speed stability, wide timing scope, low cost, and long life-span. And it is very promising for practical applications.     

基于VC 的无刷直流电机负载特性可视化模拟测量平台研究

为达到最贴近实际地测量无刷直流电机负载特性的目的,本文提出了一种基于VC 的可视化(BLDCM)测量方案,在可变负载条件下,基于电机负载特性测量原理,构建了可视化应用测试平台。进而通过大量实验,获得了一系列应用测试数据。实验分析表明,主要测试参数优于SIMULINK与LabVIEW虚拟测试平台并且真实地反映了无刷电机的实际工作状态,为实际应用提供了一种实用的测试手段。     

直流无刷伺服电机调速系统设计

针对传感器对直流无刷伺服电机直接进行模拟控制时,存在调速精度不高、电压不匹配及转速波动大等问题,设计了一种PWM变频调速系统。该系统通过ADS8365将来自传感器的模拟信号转换为数字信号,应用TMS320F2812对采集到的数字信号进行相应处理,并通过计算输出相应频率的PWM信号,PWM信号经过光电耦合器进行电平转换后作为电机的控制信号,控制电机的转速。以MEMS陀螺仪为传感器的调速试验证明,能够准确控制电机的转速,并能有效减小转速波动。     

Specific accelerating factor: One more tool in motor sizing projects

This work is focused on improvement of motor sizing methods based on the accelerating factor [4]. This quantity is used to seek commercial motor–gearbox couples for mechatronics; unfortunately, it does not allow comparison of different acceptable solutions. The designer must therefore make a choice based on experience, instinct and poor data of catalogues. A per-unit-length value of the accelerating factor (specific accelerating factor) gives instead a rough but consistent idea of a servo-motor quality, for a more systematic and thoughtful selection. The specific accelerating factor represents a “benchmark” for a motor, it’s easy to calculate from datasheets and was defined using well known notions of electromechanical design (under certain assumptions).     

无刷励磁同步电机变频驱动控制系统

无刷励磁同步电机(以下称无刷同步电机)具有维护简单,可靠性高,没有旋转接触导电部分等优点,特别适用于有易燃、易爆气体及导电粉尘应用场合。无刷同步电机双边励磁,启动转矩大,采用高压变频驱动装置对无刷同步电机进行调速改造,可缩短无刷同步电机整步震荡过程,减小整步电流,提高运行稳定性,增加无刷同步电机及其负载运行经济效益。     

机载电液作动器驱动器的双余度控制

机载静电液作动器将传统作动器的液压源驱动改为电能驱动,由电动泵直接驱动液压泵,具有结构简单、效率高和容错性强等优点,是多电飞机研究的重要内容。本文研究的静电液作动器的驱动部分,是采用了一种双绕组无刷直流电机,其定子绕组由电角度相差30o的两套绕组构成,并且由两套独立的电路驱动,从而实现电气双余度控制。文中提出了双余度系统的"故障——工作"的容错控制方式,说明了双余度控制的高可靠性。最后,给出实验结果,验证了双余度控制的优点。     

Optimal brushless DC motor design using genetic algorithms

This paper presents a method for the optimal design of a slotless permanent magnet brushless DC (BLDC) motor with surface mounted magnets using a genetic algorithm. Characteristics of the motor are expressed as functions of motor geometries. The objective function is a combination of losses, volume and cost to be minimized simultaneously. Electrical and mechanical requirements (i.e. voltage, torque and speed) and other limitations (e.g. upper and lower limits of the motor geometries) are cast into constraints of the optimization problem. One sample case is used to illustrate the design and optimization technique.