共查询到19条相似文献,搜索用时 109 毫秒
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为了响应市场对其负荷减速高速运转的要求,设计一种基于单片机控制的步进电机自适应细分调速方法。通过划分电机自适应加速、匀速和减速三个阶段,采用离散法对步进电机自适应细分调速进行离散处理,校正局部误差。再采用计算速度定时周期的方法,确定步进电机调速定时常数。计算调速参数,规范调速服务流程,根据调速指针匀速转动趋势,选择程序结束标识,完成对电机的S形曲线加减速控制。采用设计对比实验的方式验证提出方法在实际应用具备更好的控制速度,可满足步进电机自适应细分调速的运行需要。 相似文献
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针对光学位移台的运动控制要求,设计出一套基于单片机的步进电机驱动控制系统。单片机采用C8051F310,步进电机驱动器采用A3992,单片机通过RS485总线接收上位机命令,并通过SPI总线控制步进电机驱动器A3992的工作模式,通过软件程序实现了步进电机细分运动和S曲线运动,充分满足了光学位移台运行平稳、噪音低、定位精度高的控制要求。 相似文献
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文章介绍了用单片机实现步进电机高精度细分技术,在对现有的步进电机的细分技术方案探讨的同时,提出并介绍了基于AT89C51单片机控制的斩波恒流均匀细分驱动方案及实现技术。运行的结果表明所设计的驱动器具有细分精度高,运行平稳且噪声小、功耗小、可靠性好、体积小和性价比高等优点。 相似文献
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宋博 《太赫兹科学与电子信息学报》2017,15(2):317-322
五相步进电机已被广泛应用于控制旋转角度、速度、位置和同步性的诸多领域。通过对新型五相步进电机工作原理的研究,采用Luminary公司LM3S615芯片设计完成步进电机的控制组件,由其内部自带的脉宽调制(PWM)模块产生驱动组件所需的接收时序信号,实现对驱动组件进行细分驱动。通过配置驱动组件,可以产生占空比不同的方波,从而在电机线圈内能够产生多种不同幅值的电流来实现细分驱动。选用的五相步进电机平台型号是SGSP(MS)20-85(X)。通过实验表明可以实现对步进电机的步进角、角位移量以及转动速度和加速度的精确控制。 相似文献
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本设计是根据现实生活中常用的步进电机和常用功能设计的驱动器,设计的主要目的是解决步进电机驱动器功能单一和生产成本的问题。设计中采用AT89S52单片机芯片作为核心控制模块,驱动芯片采用带细分功能的TB6560AHQ芯片,最多可达16细分,且自带正弦波电流驱动,存储芯片采用24C04。最终系统可以实现多模式选择,圈数、速度设定和存储,低速自动细分,各种数据的液晶显示,过热和掉电保护等功能。 相似文献
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基于单片机和CPLD的步进电机细分驱动系统 总被引:2,自引:0,他引:2
介绍了一种采用单片机和CPLD(Complex Programmable Logic Device)实现步进电机细分驱动的方法。利用单片机来设定电机的转速、转向。由CPLD产生阶梯脉冲经过DAC变换,形成阶梯形电压信号以控制步进电机每相绕组在各时刻的电压,从而实现步进电机的细分驱动。采用CPLD大大简化了系统的外围硬件电路结构,提高了系统的抗干扰性能,缩短了步进电机驱动器的设计周期。 相似文献
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介绍了基于单片机的步进电机高精度细分技术,提出了基于AT89C51单片机控制的斩波恒流均匀细分驱动方案及实现方法.运行结果表明,该方法可使步进电机的细分技术提高到一个更高精度的细分水平. 相似文献
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通过改变8098单片机内定时器T1的定时时间,实现对步进电机不同转速的控制,并且在步进电机启动和停止时具有升频和降频过程。该方法不占用CPU的大量时间,且简单可靠,经实际使用效果良好。 相似文献
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Komori M. Fukuda K. Hirashima A. 《Applied Superconductivity, IEEE Transactions on》2000,10(2):1626-1630
A magnetically levitated stepping motor using high Tc superconductors has been newly developed. The levitated stepping motor consists of a cylindrical rotor with superconductors and a stator with eight electromagnets. The rotor measures 10 mm in diameter, 46 mm in length, and 18 g in mass. The superconductors of the rotor are field-cooled in liquid nitrogen. The levitated rotor is driven by an eight-phase excitation. The rotor spins as the excitation phases of the electromagnets shift one by one. The rotation angle by each step is 45°. The experimental result shows that the rotor speed is limited to about 400 rpm by axial displacements. During the rotation, the radial displacement of the rotor is less than 0.4 mm. Magnetic flux density in the superconductors is studied before and after continuous rotations. These show that there is a possibility that the levitated stepping motor will be realized 相似文献
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A phase-controlled oscillator (PCO), composed of an adaptive digital-pumped controller (ADPC) and a voltage-controlled oscillator (VCO), is proposed as a novel stepping motor driver. A phase-locked stepping servomechanism (PLSS) is established and the PCO can provide an accurate and stable pulse train to adaptively drive the stepping motor. System modeling, analysis, stability investigation, design, and implementation are all conducted. Computer simulation and experimental results indicate that the performance of the PLSS is close to the theoretical prediction. Some speed responses for 40-1000 r/min are examined in the real PLSS. A speed regulation of ±0.15 r/min was achieved. An adaptive line density selector can be used to improve the system performance 相似文献
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ARM已经被广泛应用于工业控制和生产生活方面,本文设计一种基于ARM为核心的步进电机控制系统,该系统相对于传统单片机控制系统,具有处理速度快,外围接口资源丰富,控制方便,精度高等特点。 相似文献
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Nowadays, thanks to the development of microprocessors, stepping motors are widely used in robotics and in the numerical control of machine tools where they have to perform high-precision positioning operations. Nevertheless, the variations of the mechanical configuration of the drive, which are common to these two applications, can lead to a loss of synchronism for high stepping rates. Moreover, the classical open-loop speed control is weak and a closed-loop control becomes necessary. In this paper, the fuzzy logic principle is applied to control the speed of a stepping motor drive with feedback. An advanced test bed is used in order to evaluate the tracking properties and the robustness capacities of the fuzzy logic controller when variations of the mechanical configuration occur. The experiment has been performed using a low-cost 16 bit microcontroller in order to verify the design performance 相似文献