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通过新华龙c8051f310单片机对三相异步电机进行控制,主要介绍了三相电机控制器和键盘输入显示电路的设计,实现了电机的闭环控制。在电机控制器的设计中,采用PID控制算法,阐述了对电机速度的控制。该系统具有成本低、控制方便的特点 相似文献
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根据整车参数要求。设计一种基于AVR单片机控制的纯电动汽车无刷直流电机驱动系统。该系统以MEGA48单片机作为控制芯片.进行了电源电路设计、系统硬件保护电路设计、三相全桥逆变电路设计、逆变器驱动电路设计,利用PI控制器进行电机电流速度的双闭环控制,并采用C语言进行模块化编程和结构化编程。该系统可以实现欠压、过流和堵转保护。在系统出错情况下具有自检功能,同时具有升级空间,便于用户二次开发。 相似文献
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通过分析三相电压型PWM整流器的数学模型,建立了PWM整流器在两相旋转坐标系下的数学模型。研究了电压电流双闭环控制策略。基于空间矢量的思想,设计了三相电压型PWM整流器在Matlab/Simulink中的仿真模型。仿真结果表明,此控制方法有效可行。 相似文献
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交-交变频双馈调速系统的仿真研究 总被引:2,自引:0,他引:2
介绍了用MATLABSimulink软件包建立交-交变频双馈调速系统的仿真模型,并利用该模型对某155kW的线绕电机双馈调速系统进行仿真分析与参数设计。 相似文献
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针对高压断路器三相永磁无刷直流电机机构,研究了不同控制策略下电机操动机构的运动特性.考虑高压断路器的分、合闸操作过程,建立了永磁无刷直流电机操动机构运动控制系统的仿真模型,采用数字式双闲环控制,内环为电流环,采用PI控制,外环为速度环,基于传统PID控制器、单神经元PID控制两种不同控制策略控制.通过对伺服控制系统的仿真分析得到了电机操动机构速度跟踪控制特性.结果表明,单神经元PID控制器能够较好的实现触头速度的跟踪控制,使其按理想运动特性曲线运动,是一种较理想、有效的控制方法. 相似文献
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分析了BLDCM的换相转矩脉动,指出了引起转矩脉动的主要原因是:关断相电流的下降速度大于开通相电流的上升速度,得到了减小电机低速运行时非换相电流脉动的方法,该方法的原理是令换相期间脉宽调制信号的占空比?等于两倍的稳定运行时脉宽调制信号的占空比α1(2α1=α法).在此基础上,提出了基于三相电流的相电流闭环控制.指出只有三相电流控制才能有效控制相电流.分别通过仿真验证了基于三相电流的相电流闭环控制能够有效的减小非换相电流的脉动. 相似文献
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本文首先介绍了智能控制技术的发展状况,同时针对该技术在机电控制系统中的应用进行了分析,希望对提升两者的融合应用有所帮助。 相似文献
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This work presents a newly developed six-axis magnetic suspension stage for precision motion control. The designed travel volume is 4/spl times/4/spl times/2 mm in translation and 1/spl deg//spl times/1/spl deg//spl times/2/spl deg/ in rotation. A dynamic model of the feedback linearized and uncoupled stage is developed for the purpose of motion control. Model parameter variations are demonstrated through closed-loop system identification. In motion control, a parameter variation model is proposed in conjunction with a reduced order observer to compensate the joined effect of disturbance, modeling error, and cross coupling. Experimental results in terms of positioning stability, motion resolution, rotational motion control, model regulation, large travel multiaxis contouring, and disturbance rejection are shown. Uniform positioning stability and invariant dynamic response within the designed travel volume are illustrated. 相似文献
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This paper introduces a novel concept termed Smart Mesoflaps for Aeroelastic Recirculation Transpiration (SMART) to render mass and momentum transfer for controlling shock/boundary-layer interactions in supersonic jet inlets. The SMART concept consists of a matrix of small flaps designed to undergo local aeroelastic deflection to achieve proper mass bleed or injection when subjected to shock loads. To optimize the performance of this system, NiTi shape memory alloy is used as an actuator for the flaps to control the amount of recirculation. The focus of this paper will be the subsystem modeling and control of a single flap. After a relatively detailed model is developed, a simpler model is generated, and it is experimentally shown that this approximation is adequate for control purposes. Next, the control strategy for this subsystem, subject to hysteresis and actuator saturation, is presented. A basic proportional integral derivative (PID) controller is enhanced using a hysteresis compensator (HC) and an error governor (EG). A generalized error governing scheme for PID controllers to compensate for actuator saturations is also developed. This EG method is generalizable to any stable process controlled by a PID. Finally, the PID with HC and the error governing method is experimentally applied to a benchtop SMART subsystem. 相似文献
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《III》2003,16(6):56-57
In the Semiconductor 2003 meeting in Edinburgh in June, the prime message for the compound sector from both Bookham’s Andy Carter and Intense Photonics’ John Marsh was ‘integration.’ From Prof Gabriel Aeppli of University College London, the nano technology message was that μ-scale electronics is already a working science; revolutionised by scan probe microscopy and e-beam litho, it cannot be distinguished from modern materials science; but the trick will be in ‘learning to control it.’ 相似文献
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分析了电视台播控中心总控系统的作用,指出播控中心总控系统的设计原则和设计考虑要点,详细介绍了扬州电视台播控中心总控系统的构建方案及其安全可靠性措施。 相似文献
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《Mechatronics》2017
Series elastic joints allow force and impedance controllers to be implemented on high torque and high power density motors. Several impedance controllers have been proposed whose stability is usually analyzed by means of passivity-based tools such as the Z-width characterization. This paper proposes an overview of existing impedance control solutions for series elastic joints and derives the passivity characterizations that are still missing in the literature, thus providing a complete and coherent overview of the existing solutions. Within this overview, we highlight the advantages of impedance control based on positive acceleration feedback showing improved stability robustness and impedance accuracy with respect to existing solutions. These advantages are theoretically motivated (considering ideal conditions) and experimentally validated. 相似文献
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为了使半导体激光器能够快速地达到稳定工作状态,提出并实验验证了一种串联双PID控制的高精度热电制冷器(TEC)温度控制系统,该控制系统的控制芯片采用飞思卡尔MC9S12XS128MAL单片机,通过负温度系数热敏电阻进行温度信息的采集,驱动电路采用BTN7971芯片驱动TEC工作,在软件编程上,通过采用串联PID算法,利用闭环负反馈结构实现温度的稳定控制。在实验中,当温度从26.6℃上升到目标温度40℃时,建立稳态的时间为40s,超调量为0.1%,当温度从26℃下降到10℃时,建立稳态的时间为50s,与常规PID控制系统相比,该系统具有更好的动态性能。 相似文献