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介绍全数字电动执行器的组成和工作原理,开发了以80C196单片机为核心的全数字电动执行器的电动驱动电路,研究全数字电动执行器下位机运行的可靠性,以及其于CAN总线的上下位机的通信。 相似文献
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电动执行器控制模块采用传统的控制电路结构较复杂,发生故障的概率相对较高,另外,电机在运行时会产生很多热量,导致电机发热过高,增加了机械的磨损,结果造成执行器运行速度慢,耗费时间,寿命短。本文采用一种基于AVR单片机ATMEGA329为核心的电动执行器控制模块检测仪,很好的解决了传统电动执行器控制模块存在的问题,实现了较高的可靠性和稳定性,可以长距离的传输信号,且速度较快,与其它一些仪表可以做到调试、功能和技术性能测试。文中简介了该控制模块检测仪的基本原理、设计方案和实验测试结果。最后经过试验证明,该电动执行器运行稳定,可靠,能够满足技术更新的要求。 相似文献
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全数字电动执行器的开发与应用 总被引:1,自引:0,他引:1
介绍全数字电动执行器的组成及工作原理.开发了以80C196单片机为核心的全数字电动执行器的电机驱动电路,研究全数字电动执行器下位机运行的可靠性,以及基于CAN总线的上下位机的通信. 相似文献
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电动执行器直接数字控制 总被引:3,自引:0,他引:3
胡慕伊 《自动化与仪器仪表》1998,(3):44-46
1绪论调节阀又称为调节机构,它和执行机构一起构成执行器,是过程控制系统中一个重要的组成部分。它依据来自调节仪表的控制信号而改变执行机构输出的角位移或直线位移,并通过调节机构改变被调介质的流量,使生产过程保持满足预定的要求。按照能源形式的不同,执行器分为电动执行器、气动执行器和液动执行器。其中,气动和电动执行器应用广泛,且电动执行器的使用比例亦越来越大。在以电动执行器作为最终执行装置的自动控制系统中,传统的方法是以调节仪表输出的模拟信号去控制电动执行器动作。在计算机控制系统中,人们也是将计算机输出… 相似文献
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由于智能电动执行器的参数设置,非接触式操作和执行机构运行过程中各种状态显示的需要,设计了基于LPC2136的智能电动执行器的人机接口。介绍了人机接口的组成并对其主要组成部分,包括红外遥控、液晶显示以及面板按钮的设计等进行了比较详细的阐述。分析了人机接口与主机的硬件电路连接和系统软件设计。实验表明:该人机接口实现了智能电动执行器的非接触式操作,使参数设置更便捷,并能及时显示执行器的各种状态信息。 相似文献
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基于单片机的电动执行器控制系统的开发 总被引:2,自引:0,他引:2
电动执行器广泛应用于现代工业控制系统中,对阀门进行控制和调节,控制器是电动执行器的核心部件。本文完成了以AT89S52单片机和CDMA无线数传模块DTGS-800为核心的电动执行器硬软件的开发工作。最后对阀门的位置控制以及流量控制都提出了先进、可行的策略。 相似文献
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一种新型电动执行器控制器 总被引:1,自引:1,他引:0
介绍了一种带微机的智能电动执行器控制器,该控制器可采用串行数据通信方式与控制计算机交换信息,详细介绍电动执行器的结构和工作原理,控制器的现状和特点。 相似文献
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随着信息技术和自动化技术的发展,智能型电动执行机构成为自动化系统的重要的一部分,而电动执行机构的远程控制也成为了研究的重点。提出了一种以意法半导体公司基于ARM Cortex M3内核的STM32芯片为主控制器,具有PROFIBUS现场总线从站接口的智能型电动执行机构的软硬件设计方案。经模拟试验表明,该方案提升了执行机构的智能化水平,具有良好的效果。 相似文献
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The monolithic integration of bulk-Si MEMS sensors and actuators using the Au–Au bonding technology is presented in this work. With this technology, the substrate isolation and electrical interconnection between the CMOS circuits and bulk-Si CMOS MEMS sensors are achieved perfectly. In order to demonstrate this technology, a pressure sensor and an electrothermal actuator have been monolithically designed and fabricated. In addition, by sputtering aluminium on the bulk silicon electrothermal actuator, the electrothermal actuator is modified and the sensitivity of the actuator is obviously improved. The measurement results show that the sensitivity of the pressure sensor is 0.29fF/hPa. And the sensitivities of the modified and non-modified electrothermal actuators are 20.23 μm/V and 3.34 μm/V, respectively. Compared with the non-modified electrothermal actuators, the sensitivity of the modified electrothermal actuators is improved by 6 times. 相似文献
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为了减小煤矿电网在无功补偿时随机投切电容器组给电网带来的涌流及过电压,设计了一套以具有发展前景的"软开关"技术即相控技术为根基的无功补偿装置,采用寿命长、成本低的带有永磁机构的真空接触器作为投切开关,该机构较传统的弹簧机构和电磁机构动作分散性小,为满足动作时间高度一致,对真空接触器动作时间的分散性进行有效补偿,并采用模块化的思想理念建立系统整体结构,采取适当的控制策略完成预期位置投切.最后本系统进行了仿真,并在某矿6kv电网中进行了实验测试,仿真和实验结果都表明本系统能有效的补偿系统无功,有一定的应用价值. 相似文献
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Fabricating electrostatic micro actuator, such as comb-drive actuator, is one of the demanding areas of the MEMS technology because of the promising applications in modern engineering, such as, micro-switches, attenuators, filters, micro-lenses, optical waveguide couplers, modulation, interferometer, dynamic focus mirror, and chopper. For the fabrication, most of the cases silicon monocrystalline wafers are used through complex process. To etch the silicon substrates, researchers often use deep reactive-ion etching or anisotropic wet etching procedure which are time consuming and unsuitable for batch fabrication process. Again, resent research shows that comb-drive actuators need comparatively high voltage for actuation. In solving these problems, the study presents a copper based electrostatic micro actuator with low actuation voltage. Using wire electrical discharge machine (WEDM), the actuator is fabricated where a light weight flexible spring model is introduced. Capacitor design model is applied to present a voltage controlling electronic circuit using Arduino micro controller unit. The experimental result shows that the actuator is able to produce 1.38 mN force for 15 V DC. The experiment also proves that coper based actuator design using WEDM technology is much easier for batch processing and could provide the advantages in rapid prototyping. 相似文献
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A novel self-aligned electrostatic vertical actuator using plastic deformation technology 总被引:1,自引:0,他引:1
A novel method is presented to fabricate a self-aligned electrostatic vertical actuator using plastic deformation technology. The model of the vertical actuator is proposed and simulated using finite element analysis method. The fixed combs and movable combs, and spring beams are patterned using one mask and fabricated by DRIE technology simultaneously. The fixed combs and movable combs have staggered distance of 21.8 μm in the vertical direction on the condition of self-alignment using plastic deformation technology. The electrostatic vertical actuator has achieved large vertical drive displacement at low voltage. The measurement results show that the maximum drive displacement runs up to 17 μm at 17 V voltage between the fixed combs and movable combs. Experimental results verify the usefulness of the guidelines obtained from simulation and calculation. 相似文献
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Peter Meszmer Karla Hiller Steffen Hartmann Alexey Shaporin Daniel May Raul David Rodriguez Jörg Arnold Gianina Schondelmaier Jan Mehner Dietrich R. T. Zahn Bernhard Wunderle 《Microsystem Technologies》2014,20(6):1041-1050
In this paper, a novel concept of a thermo-mechanical MEMS actuator using aluminum thin-film heaters on a thermal oxide for electrical insulation is presented. The actuator is part of an universal tensile testing platform for thermo-mechanical material characterization of one dimensional materials on a micro- and nano-scopic scale under different environmental conditions, as varying temperatures, pressure, moisture or even vacuum and is realised in BDRIE technology. It is shown, that the actuator concept fulfills the requirements for the use in a tensile loading stage along with heterogeneously integrated nanofunctional elements, following a specimen centered approach in line with bottom-up self-assembly processes. Simulation and experiment agree very well in the thermal and mechanical domain and allow subsequent optimisation of the actuator performance. 相似文献
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