可编程电源系统的设计与实现

介绍了一种实用的可编程电源系统的设计与实现,该系统以C8051F020单片机为中央控制单元,以VICOR DC—DC系列电源模块为主供电单元,能够多通道、全隔离地输出多路稳定的电压,分别利用MAX186和MAX472对输出的电压值和电流值进行采样,并将采样结果实时地显示在屏幕上;设计了过（欠）压和过流自动保护的功能,同时可以通过计算机的串口对其进行遥控操作,实践表明。该电源系统电压调整范围可达50％～110％,调压误差〈1．5％,整个系统操作简单,运行稳定,具有较好的实用性和经济性。     

高精度稳压恒流可编程电源的研制

稳压恒流源在电子设备中的运用非常广泛。本文介绍的电源采用控制电路和主电路各自单独供电,理论上只要主电路能够承受,就可以提供任意想要的输出的电压值和电流值。电路采用了预稳压电路,用以减少电路的纹波系数及调整管的压降。采用CPU控制D/A输出用作电路的基准源,方便控制输出电压;控制部分采用闭环控制,实现输出值与设定值无偏差输出。电路可根据负载自动实现稳压与稳流的自动转换电路。用户通过键盘设定输出电压和输出电流值,同时显示输出值大小。     

具有最少引脚的微机电源监控电路

具有最少引脚的微机电源监控电路ＴｈｅＣｏｍｐｕｔｅｒＰｏｗｅｒＳｕｐｐｌｙＣｏｎｔｒｏｌＣｉｒｃｕｉｔｗｉｔｈｔｈｅＬｅａｓｔＢａｓｅＰｉｎ●纪宗南ＪｉＺｏｎｇｎａｎ本文介绍了一种新型的微机电源监控芯片ＭＡＸ７０９，该芯片具有引脚少（３个）、功耗低、...     

ITECH6322可编程电源的远程控制软件的开发

开发一款ITECH6322可编程电源的远程控制软件。计算机与可编程电源以串行通信的方式进行通信,介绍硬件连接方式,详细说明在VB6.0开发环境下使用SCPI（Standard Commands for Program-mable Instruments）协议的方法。实验结果表明,该软件能够实现可编程电源的远程控制。     

利用ICL232的液晶显示器负电源电路

利用ＩＣＬ２３２的液晶显示器负电源电路ＡｐｐｌｉｃａｔｉｏｎｏｆＩＣＬ２３２ｉｎＬＣＤＣｉｒｃｕｉｔ●李华徐平ＬｉＨｕａＸｕＰｉｎｇ１前言目前，液晶显示器在工业自动化控制、家用电器、便携式仪器仪表等领域有着广泛的应用。大多数液晶显示器件，特别是图形液...     

低成本聚合物微流控芯片加工技术综述

针对传统微流控芯片加工方法成本高昂、耗时长的问题,近年来出现了多种低成本的微流控芯片加工方法,在聚合物、纸等材料上加工、完成了能够满足其应用需求的微流控芯片。对当前各类基于聚合材料的低成本微流控芯片加工技术进行了梳理和总结,并对未来低成本微流控芯片的发展进行了展望。     

基于实时时钟芯片X1228的电源控制器设计

介绍多功能实时时钟芯片X1228的内部结构、功能、特点以及在开放式实验室管理系统中电源控制器部分的应用。     

可编程Butterworth滤波器设计与应用

介绍一种可编程Ｂｕｔｔｅｒwoｒｔｈ滤波器设计。针对超声波回波信号波形处理的要求，设计多通道Ｂｕｔｔｅｒwoｒｔｈ滤波器，通过对高性能电子开关编程控制选择相应滤波器，实现对滤波器通宽度变换。这种滤波方法也可以应用于其他信息采集处理。     

可编程电池电源管理电路的设计

本文提出了一种利用单片机剩余资源的可编程电池电源管理电路。该电路可适用于不同类型、不同电压的各种电池电源的管理：具有可靠性强、灵活性高、电路简单、成本低、功耗小的特点。     

小型可编程控制器外围电路设计及维护

论述了小型可编程控制器外围电路设计及维护的一些基本原则和方法、涉及到电源、接地、抗干扰处理、输出模块的选用、I／O的保护和外部电路安全设计六个方面、并例举了故障事例加以分析。     

基于SG3525的步进电机程控电源设计

为满足步进电机驱动调压电源的需要,设计了一种新型多功能受控可调开关电源。设计中采用半桥拓扑结构实现,分析了电源的工作原理及工作过程,利用单片机STM32F103VC调节PWM调制芯片SG3525的参考电压端口,实现稳压调压。实验结果表明,该电源具有高电压调整率和负载调整率、体积小、质量轻等优点,完全满足步进电机调频调压驱动方式的驱动电源的要求。     

基于LabVIEW的SCPI命令可编程电源监控软件设计

在LabVIEW开发环境下,采用一种“时间片轮转与事件触发相结合“的方法,运用串口通讯设计了针对SCPI命令程控电源的监控软件。该监控软件界面设计友好、功能完善,实现了电源的控制与监测并在无人机半物理仿真试验中完成了飞控计算机电源的稳定供给,对今后的测控软件开发具有重要参考价值。     

A fish robot driven by piezoceramic actuators and a miniaturized power supply

In this paper, we have introduced a prototype of a fish robot driven by unimorph piezoceramic actuators. To improve the swimming performance of the fish robot in terms of tail-beat angle, swimming speed, and thrust force, we used four light-weight piezo-composite actuators (LIPCAs) instead of the two LIPCAs used in the previous model. We also developed a new actuation mechanism consisting of links and gears. Performance tests of the fish robot were conducted in water at various tail-beat frequencies to measure the tail-beat angle, swimming speed, and thrust force. The tail-beat angle was significantly better than that of the previous model. The best tail-beat frequency of the fish robot was 1.4 Hz and the maximum thrust force was 0.0048 N. A miniaturized power supply, which was developed to excite the LIPCAs, was installed inside the fish robot body for free swimming. The maximum free-swimming speed was 3.2 cm/s. Recommended by Editorial Board member Hyoukryeol Choi under the direction of Editor Jae-Bok Song. This work was supported by the Korea Research Foundation under grant KRF-2004-005-D00045. Quang Sang Nguyen received the BS (2001) and MS (2006) from Hochiminh City University of Technology, Vietnam. Formerly an assistant lecturer of Naval Architect and Marine Engineering, Hochiminh City University of Technology, Vietnam (2001-2006), he is currently a Ph.D. student at the Department of Advanced Technology Fusion, Konkuk University. His specialty is biomimetic system design and smart material application. Seok Heo received the B.S., M.S. and Ph.D. degrees in Mechanical Engineering from Dongguk University in 1998, 2000, and 2003, Respectively. Currently he is a Research Professor at the Artificial Muscle Researcch Center, Konkuk University, Seoul, Korea. His research interests include biomimetics, vibration analysis, system design and control, and smart materials and structures. Hoon Cheol Park received the B.S. (1985) and M.S. (1987) from Seoul National University in Seoul, Korea and Ph.D. (1994) from the University of Maryland at College Park, MD, USA. He joined the Department of Aerospace Engineering, Konkuk University in Seoul, Korea, in 1995, and he is currently a Professor in the Department of Advanced Technology Fusion. His professional experience includes Kia Motors (1986–1988) and Korea Aerospace Research Institute (1994–1995). His specialty is finite element analysis and his recent research has focused on biomimetics. Nam Seo Goo graduated with honors in 1990 from the Department of Aeronautics Engineering of Seoul National University, and he got a masters degree and Ph.D. from the Department of Aerospace Engineering at the same university in 1992 and 1996, respectively. His Ph.D. thesis was on the structural dynamics of aerospace systems. As soon as he obtained the Ph.D. he entered the Agency for Defense development as a senior researcher. In 2002, after four years of service, he joined the Department of Aerospace Engineering at Konkuk University, Seoul, Korea, where he is currently serving as an Associate Professor of the Department of Advanced Technology Fusion. His current research interests include structural dynamics of small systems, smart structures and materials, and MEMS applications. Taesam Kang is a Professor of the Department of Aerospace and Information System Engineering, Konkuk University. He received the B.S., M.S. and Ph.D. degrees from Seoul National University in 1986, 1988 and 1992, respectively. His current research areas are robust control theories and the application of those theories with regard to flight control, development of micro-aerial vehicles and fish robots. Kwang Joon Yoon was awarded the BS (1981) and M.S. (1983) in Aeronautics Engineering from Seoul National University and Ph.D. (1990) in Aeronautics and Astronautics Engineering from Purdue. Since 1991 he has been a Professor at Konkuk University in Korea, where he is currently a Professor of Aerospace Engineering, the Director of the National Research Laboratory for Active Structures and Materials, the Director of the Artificial Muscle Research Center, and the Director of the Smart Robot Center. His current research interests include smart structures and materials, micro-aerial vehicles, and insect-mimetic micro-robot systems. Seung Sik Lee received the B.S. (1996) and M.S. (1998) in Civil Engineering from Hongik University in Seoul, Korea and Ph.D. (2003) in Civil Engineering from Georgia Institute of Technology, GA, USA. Currently he is a Senior Researcher at Korea Institute of Marine Science & Technology Promotion.     

A miniaturized high-voltage solar cell array as an electrostaticMEMS power supply

A hydrogenated amorphous silicon (a-Si:H) solar cell array that is designed as an on-board power source for electrostatic microelectromechanical systems (MEMS) is presented. A single cell consists of a triple layer of p-i-n/p-i-n/p-i-n a-Si:H and produces an open circuit voltage (V_OC) of 1.8~2.3 V, a short circuit current density (J_SC) of 2.8 mA/cm², and fill factor (FF) of 0.495. A series interconnected array of 100 single solar cells (total array area of 1 cm²) is fabricated in an integrated fashion and produces an array V_OC of 150 V, and array short circuit current (I_SC) of 2.8 μA under Air Mass (AM) 1.5 illumination. To demonstrate the usefulness of this solar cell array as an on-board power source for electrostatically driven micromachined devices, it has been packaged with a movable micromachined silicon (Si) mirror in a hybrid manner. The movable Si mirror is directly driven by the cell array electrical output, and the motion of the mirror plate has been observed reproducibly. Variation of light intensity and/or number of illuminated cells produces different values of array V_OC, thus enabling control of the deflection of the Si mirror by variation of incident light intensity     

一种矿用开关电源设计

针对现有矿用开关电源存在的谐波电流较大、功率因数较低等问题,采用主动功率因数校正与谐振软开关电源技术设计了一种矿用开关电源,介绍了该电源的设计指标及硬件电路设计方案。试验结果表明:在170V交流输入且输出满载条件下,矿用开关电源输入电流未出现脉冲状,谐波电流小;50℃环境温度下,电源主要器件的最大温度为98.5℃;在输入电压为AC90~265V时,电源功率因数不小于0.96,纹波电压小于30mV,电源效率达86.5%;绝缘耐压试验中绝缘电阻不小于50 MΩ,漏电流低于1mA。     

CCD数字相机的电源系统设计

分析了CCD相机外部单路供电,并为实现多路DC/DC转换功能,提出了一种开关型稳压电源与线性稳压电源相结合的系统设计方案。分析了具有BOOST/BUCK功能的开关电源和线性稳压电源的工作特性,并结合CCD相机的整体设计要求,实现了相机电源的功耗低、发热量小、EMI干扰轻的设计目标,从而提升了CCD相机的整体性能。     

一种降压型直流开关稳压电源的设计

为了解决传统DC-DC变换器存在的能量损耗大、效率低、输出纹波大等问题,以LM5117芯片和CSD 18532KCS MOS场效应管为核心器件,实现了16 V到5 V的直流电压降压转换。文中先通过对比各种降压型直流开关稳压电源的转换机理,确定了基于LM5117芯片的Buck变换器设计方案;接着详细阐述了电路设计中降压变换与稳压控制的方法,针对LM5117芯片外围关键的元件参数,给出了计算公式与参考数据,同时对于传统的电流采样与斜波补偿电路进行了改进;最后,经过实验验证,该设计的降压型直流开关电路负载调整率为3%,电压调整率为0.5%,效率达到87%,并且输出纹波得到较好的抑制,达到了预期设计的效果。     

处理器供电电源的设计

介绍了DC/DC开关稳压电源系统的设计,电源的拓扑采用全桥电路图拓扑、倍流同步整流方式。设计了一款为工业处理器供电的板载电源产品,进行了功率器件的选型并对影响电源效率的主要功率损失进行了分析,完成此款电源产品的PCB设计。最终的分析结果显示,此款电源产品的电性能参数符合客户的预期效果,并成功应用在工业处理器供电设备上。     

高精度数字跟踪式压电陶瓷驱动电源设计

设计了一种数字跟踪式复合结构的压电陶瓷驱动电源。采用数字式自适应信号源,驱动高精度运放OP07和高压大电流运放PA04组成复合式放大器,通过合理的相位补偿、保护电路设计和散热计算,实现高精度低漂移的压电陶瓷驱动。     

小型化低功耗数字信号处理器设计

随着电子技术的不断进步,一些原本只能安装在较大平台的通信设备通过小型化、低功耗设计已经能够加装在较小的平台上,而通信设备的加装会使这些平台的信息化程度大幅提升,从而适应更多的应用场合。为了实现通信设备的小型化和低功耗,文章给出了通信信号处理器的小型化和低功耗设计方法。