基于PCC控制器的精密伺服控制系统

本文介绍了一种精密伺服控制系统的组成,包括PCC控制器、直流伺服驱动器、直流力矩电机、旋转变压器等,并介绍了控制系统的工作原理和工作方法,最后给出了跟踪精度的测试结果。     

基于DRV8432的直流力矩电机驱动器的设计

针对直流力矩电机驱动器的设计,详细介绍了基于DRV8432的直流力矩电机驱动器设计过程,提出了对开发过程中所出现问题的改进办法。实验验证表明,DRV8432十分适合小功率直流力矩电机驱动。     

直流力矩电机在精密跟踪雷达中的应用

简要介绍了直流力矩电机的工作原理,详细讨论了直流力矩电机的特点及其在精密跟踪雷达伺服系统中的应用。     

直流脉宽调速系统

本文着重阐述了直流脉宽调速系统对直流力矩电机的控制。详细分析了ＰＩＤ调节器、三角波发生器、宽调制器、延时光耦隔离电路、功率变换器在控制线路中的作用。     

激光加工多自由度工作台控制系统

主要对激光加工多自由度工作台控制系统的硬件和软件进行了设计。系统选用多轴运动控制器(PMAC)作为核心控制器,实现对激光加工5个运动轴的控制。介绍了双端口RAM实现上位机与PMAC的通讯方法,这种方法可以大大提高系统的通信速度。设计了可视化人机交互界面,为用户联系控制系统提供了一个友好的交互窗口。表述了PMAC运动程序及PLC程序的编写过程,为用户自主进行程序开发提供了指导。这些研究分析对硬件设计和软件开发都具有重要的参考意义。     

机载SAR稳定平台直流力矩电机驱动器

介绍了稳定平台直流力矩电机驱动器的系统组成,包括单片机、R/D变换器、脉冲宽度调制(PWM)功放电路、A/D和D/A电路、通信接口电路。详细阐述了直流力矩电机驱动器需要解决的关键技术问题。最后,给出了稳定精度试验结果。     

基于PMAC的伺服控制系统的开发

以可编程多轴运动控制卡（PMAC）为基础构建伺服控制系统,采用Visualc＋＋编制控制程序,将转台系统中管理、控制功能分作若干个模块来实现,负责底层伺服驱动的函数利用PMAC语言编写,可以被直接调用。整个控制软件能完成数据及运动状态显示、伺服驱动、定位等任务。     

电机驱动器装配工艺技术

阐述了直流力矩电器驱动器的基本工作原理;给出了直流力矩电器驱动器的装配工艺流程,并对工艺流程中的重要环节做了较为详细的说明;总结了直流力矩电机驱动器的抗干扰措施及安装注意事项。     

基于TMS320F2812的光学扫描控制系统设计

为解决激光三维成像地形匹配雷达中以往采用的进口光学扫描器体积过大无法满足弹上应用的问题,论述了一种基于美国TI公司TMS320F2812数字控制处理器的小型光学扫描控制系统的设计和实现,该系统采用直流力矩电机直接驱动光学镜片的方式,其结构设计避免了使用减速器带来的误差,同时体积大幅减小;运用优化的PID控制策略实现高速高精度光学扫描控制系统。详细介绍了光学扫描控制系统的硬件结构及闭环软件控制算法,实验结果表明,扫描系统的精度满足使用要求,环境适应性好,适用于各种扫描成像类的光电产品。     

小角度摆动扫描控制系统的分析与实现

激光测距仪对摆动扫描控制系统提出了特殊的要求(摆动幅度为±0.125°,摆动频率为2～8 Hz)。在对系统进行建模与仿真分析的基础上,针对其中存在光栅码盘位置检测精度低、电机驱动电流小、易受外界干扰等问题,提出了一种新的工程实现方法。首先采用有限转角无刷直流力矩电机作为执行元件和挠性枢轴连接,可以减小力矩波动和机械摩擦;然后通过电学细分的方法提高光栅的分辨率;最后采用电流反馈和速度反馈相结合的PID控制策略提高系统的性能。试验结果表明：此方法可以满足摆动扫描控制系统对低转速、小角度、高精度控制的要求。     

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     

伺服运动系统CMAC神经网络算法研究

为改善高速高精设备加工质量,利用小脑模型具有不依赖于被控对象的精确数学模型、极强的非线性拟合能力、对运行工况适应能力强的优势,将其与PID控制相结合形成PID＋CMAC控制策略;并借助Turbo PMAC的＂开放伺服＂功能,在Turbo PMAC运动控制器上实现了PID＋CMAC控制策略。测试结果表明PID＋CMAC控...     

基于PMAC的三维激光加工自动编程系统的研究

针对三维激光加工的特点和具体要求，介绍了作者在开放式数控系统PMAC平台上，利用通用CAD／CAM软件Unigraphics（UG）的CAM模块，从CAD模型中提取5轴联动数控加工的刀轨数据，并经后置处理转化为激光三维加工的机床数据，然后在MATLAB中进行仿真，最后生成PMAC数控代码进行加工。开发出的-C维激光加工软件实用性强，可快速、高效地完成对三维复杂形状工件的激光加工。     

Position-sensorless control of surface-mount permanent-magnet AC(PMAC) motors at low speeds

A position-sensorless field-oriented control scheme for a surface-mount permanent-magnet AC (PMAC) motor is presented. A digital signal processor is used to implement the sensorless scheme. The PMAC stator is wound like that of a conventional three-phase induction motor. The coils of the motor are all brought out and it is possible to connect the motor in different configurations. Taps are also provided which are used for voltage measurements. By measuring the tap voltages, absolute position of the PMAC motor is estimated. The estimated position information is independent of the stator resistance, thus, this scheme is even applicable at low speeds. Results are presented to show the effectiveness of the new sensorless scheme     

Policy-based management of networked computing systems

This article provides an overview of the Policy Management for Autonomic Computing (PMAC) platform, and shows how it can be used for the management of networked systems. We present the policy information model adopted by PMAC and the system model for interaction between the policy manager and the managed resource. We also present the main components of PMAC for policy creation, storage, evaluation, and enforcement, and present practical applications of PMAC in networks management.     

Pulsating torque minimization techniques for permanent magnet ACmotor drives-a review

Permanent magnet AC (PMAC) motor drives are finding expanded use in high-performance applications where torque smoothness is essential. This paper reviews a wide range of motor- and controller-based design techniques that have been described in the literature for minimizing the generation of cogging and ripple torques in both sinusoidal and trapezoidal PMAC motor drives. Sinusoidal PMAC drives generally show the greatest potential for pulsating torque minimization using well-known motor design techniques such as skewing and fractional slot pitch windings. In contrast, trapezoidal PMAC drives pose more difficult trade-offs in both the motor and controller design which may require compromises in drive simplicity: and cost to improve torque smoothness. Controller-based techniques for minimizing pulsating torque typically involve the use of active cancellation algorithms which depend on either accurate tuning or adaptive control schemes for effectiveness. In the end, successful suppression of pulsating torque ultimately relies on an orchestrated systems approach to all aspects of the PMAC machine and controller design which often requires a carefully selected combination of minimization techniques     

基于PMAC的步进电机伺服系统的PID算法研究

阐述一种基于PMAC（Programmable Multi-AxisController）控制卡的步进电机构成的伺服系统PID（ProportionIntegral Derivative）算法。详细的介绍了系统的组成和工作原理,以及PID参数的调节原理和调节方法。我们借助PEWINTUNING软件,通过分析系统响应曲线,观察系统的稳态特性和动态特性。     

Torque and current control of high-speed motion control systems with sinusoidal-PMAC motors

Describes a torque- and current-control application to a commercial motion-control system with sinusoidal permanent magnet ac (PMAC) motors. The control approach is based on maximization of torque-per-amp ratio. The proposed torque controller, in the form of torque feedforward plus proportional-integral (PI)-type torque feedback, utilizes the feedback of nominal torque signal only, a signal that can be readily calculated, online. No torque sensor is required. Through proper design of the desired nominal torque with adaptive control, the proposed torque controller can overcome disturbances due to torque estimation error and model uncertainties. A discrete-time approach is developed for inner-current loop control design. The inner-loop control gains, which are hard to obtain through manual tuning in practice, are determined by a dynamic model-based calculation methodology. Experimental evaluation on a commercial motion control system demonstrates the validity of the proposed approach in high-speed motions.