共查询到19条相似文献,搜索用时 109 毫秒
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本文介绍了步进电机的工作原理,给出了一个由单片机控制步进电机的实例,包括系统硬件和软件设计方法.经试验证明,该方案达到了对步进电机的最佳控制. 相似文献
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基于PLC的步进电机直接控制系统 总被引:3,自引:0,他引:3
提出了一种简单实现PLC直接控制步进电机的方法,设计了直接控制步进电机系统的软硬件。并在反应离子刻蚀机中验证了该方法是可行的工作可靠。 相似文献
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步进电机控制策略研究 总被引:3,自引:0,他引:3
步进电机控制策略研究的主要目的是为了提高步进电机系统精度和可靠性.随着对步进电机控制系统的精度要求越来越高,早期的控制策略已经不能满足当前系统的需求.综述了步进电机系统中常用的PID控制、自适应控制、矢量控制、智能控制等控制策略,分析了各种控制策略的优缺点及其在步进电机系统中的应用,并对步进电机控制策略的发展趋势进行了展望. 相似文献
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以正在开发的切割机器人为研究背景,论述了应用数字信号处理器DSP实现多步进电机联动的控制方法.介绍了控制系统组成结构,详细阐述了通过DSP控制器解决步进电机的加减速问题和多轴联动问题.也介绍了实际应用过程中,在系统处理中断响应及DSP控制程序编写上需要注意的一些问题.实验表明由DSP控制多步进电机的联动是灵活,准确且可行的. 相似文献
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王光宇 《电子材料与电子技术》2006,33(3):18-27
本文通过步进电机特性的分析,讨论了设计步进电机控制系统应注意的问题。设计了以单片机为核心,可改善步进电机高速矩频性能的控制系统。此系统具有工作范围广、响应快、精度高,运行稳定可靠的特点。 相似文献
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随着对汽车安全性以及舒适性要求的提高,汽车厂商对于负载模拟系统的动态响应和控制精度也有了更高的要求。在电机控制系统中,参数的突变会引起试验台的稳定性降低并且伴有震荡产生。为克服震荡,文中使用伺服控制液压马达模拟EPS的方向盘系统以及负载系统代替原有的电机控制。通过Simulink仿真得到的系统阶跃响应图和Bode图分析发现,该试验台液压系统闭环稳定,且在一定程度上克服了震荡现象,具有可借鉴性。 相似文献
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本设计应用单片机、步进电机驱动芯片、LED显示和键盘阵列,构建了集步进电机控制器和驱动器于一体的步进电机控制系统。讨论了一种步进电机变频调速的方法。本控制系统的开发采用了软硬件协同仿真的方法,有效地减少系统开发的周期和成本。 相似文献
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Closed-loop control of variable-reluctance (VR) step motors without using direct rotor-position sensing is investigated. Two nondirect rotor-position sensing techniques, namely the waveform detection (WD) and the pulse-width-modulation (PWM) techniques, were implemented and applied to a four-phase (15° step-angle) VR step motor. Test results show that a DC shunt motor and a DC series motor type of performance can be achieved from the step motor with PWM drive and WD drive, respectively. The stability problem encountered with the existing PWM controller due to motional EMF effects at higher operating speeds is investigated, and modifications are suggested to include speed as an additional control signal to make the system more stable. With the inclusion of the speed signal, the operating speed of the test motor is from 1000 to 1750 r/min. The performances for the two techniques are compared, and experimental results are presented 相似文献
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以工控PC机为核心,应用运动控制卡PCI-1240,设计了一种运动控制系统。系统采用Microsoft Visual Basic编写人机界面,调用控制卡中的运动函数库,产生脉冲和方向信号控制电机转向和转速,从而在开环状态下实现对步进电机的控制。该系统在生产实际中得到检验,应用在大型编织机计算控制系统中,成本低、控制精确、适应性好,取得了显著的效果。 相似文献
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The knowledge about fault mode behavior of an induction motor drive system is extremely important from the standpoint of improved system design, protection, and fault-tolerant control. This paper addresses the application of motor current spectral analysis for the detection and localization of abnormal electrical and mechanical conditions that indicate, or may lead to, a failure of induction motors. Intensive research effort has been for some time focused on the motor current signature analysis. This technique utilizes the results of spectral analysis of the stator current. Reliable interpretation of the spectra is difficult since distortions of the current waveform caused by the abnormalities in the induction motor are usually minute. This paper takes the initial step to investigate the efficiency of current monitoring for diagnostic purposes. The effects of stator current spectrum are described and the related frequencies determined. In the present investigation, the frequency signature of some asymmetrical motor faults are well identified using advanced signal processing techniques, such as high-resolution spectral analysis. This technique leads to a better interpretation of the motor current spectra. In fact, experimental results clearly illustrate that stator current high-resolution spectral analysis is very sensitive to induction motor faults modifying main spectral components, such as voltage unbalance and single-phasing effects 相似文献
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