共查询到20条相似文献,搜索用时 93 毫秒
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微机电系统实验建模研究 总被引:2,自引:0,他引:2
获得精确的微机电系统模型是实现系统高精度控制的有提条件,但微系统某些固有特性给系统理论建模带来一定困难。本文以微加速度传感器为例,提出一种理论分析和实验相结合的建模方法,并给出了相应的实验电路。 相似文献
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21世纪产品的微型化、个性化、智能化和低功耗已经成为必然的发展趋势,片上系统和微机电系统是这一发展趋势的有力驱动者。本文分别对这两种系统的核心技术和发展动态进行了介绍,并且对片上系统和微机电系统的市场情况进行了调查分析。最后指出在电子信息产业和机电行业,片上系统和微机电系统将引领世界的潮流,成为万众瞩目的焦点。 相似文献
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微流体系统中微阀的研究现状 总被引:1,自引:0,他引:1
依据微流体系统中微阀的驱动机理,将微阀分为有源微阀和无源微阀两大类,然后对这两大类进行细分,将有源微阀分为压电、磁、静电驱动、热驱动、相变、双稳态、外部驱动等类型,将无源微阀分为悬臂梁式、薄膜式、毛细管、扭矩驱动等类型。分别讨论了各种微阀的工作原理和性能,介绍了各类微阀的实验研究进展,指出了这些微阀的特点,突出了微阀作为微流体系统的主要元件之一,起到径流调节、开/关转换、密封生物分子和微/纳粒子等作用。回顾了微阀的发展历程,分析了目前研究过程中存在的问题,提出了微阀今后的研究方向。 相似文献
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The considerable investment in silicon technology has rarely addressed device use in harsh environments such as high temperatures, aggressive media, and radiation exposure. A clear future requirement is to save weight, volume, and reduce costs in “unfriendly” environments like high temperatures. This can be achieved either by cooling systems or by electronic microsystem components suited to withstand high temperatures. The current status of cooling systems, harsh-environment sensors, and microsystems in view of markets, realized devices, material, properties, process maturity, and packaging technologies are reviewed. Possible semiconductor candidates for high-temperature applications are discussed. The main obstacles for the future of high-temperature and harsh-environment microsystems is highlighted 相似文献
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The authors predict that scaled-down, ultra-low-power ICs and shrinking form-factors will hasten the arrival of on-demand services. Thus in total, advances in the various device and system technologies for conserving energy will deliver enormous system benefits. At the end of this decade and early into the next century, most portable microsystems will operate at around 1 V. The energy will be supplied by a single battery cell or solar cells. Progress in microelectronics and I/O devices will encourage shrinking form factors. At the lower form factors, personal systems will become unobtrusive and truly personal. Highly energy-efficient, ultra-low power 1-V microsystems will make possible the low-cost, battery-operated, portable systems needed to propel personal communication, entertainment, and information services. For these services to gain market acceptance, however, their benefits must be commensurate with cost. In their discussion the authors place emphasis on the developments in integrated circuit technologies 相似文献
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K. D. Müller-Glaser 《e & i Elektrotechnik und Informationstechnik》1997,114(9):475-482
Microsystem technologies are the basis for the realization of miniaturized, intelligent embedded systems. Microsystems are characterized by the optimized application of “microtechnologies” and “systems engineering concepts”. Microtechnologies, e. g microelectronics, micromechanics and microoptics are those fabrication technologies which enable miniaturization. Packaging and interconnect technologies enable the configuration of individual components, innovative concepts for system architectures and signal processing enable the integration and optimization of components into systems and finally the concepts of systems engineering allow for the complex design process by attaching methodologies and computer aided tools for planning, specification, modeling, simulation, design, verification and test. Designing, verifying and testing microsystems and microsystem components will not be feasible without the intensive use of design methodologies and supporting computer aided design tools (CAE, CAD, CASE, CAT, ...) 相似文献
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Applications of LIGA technology to precision manufacturing of high-aspect-ratio micro-components and -systems: a review 总被引:3,自引:0,他引:3
The by far leading technology for manufacturing MEMS devices is Si-micromachining with its various derivatives. However, many applications of microsystems have requirements on materials basis, geometry, aspect ratio, dimensions, shape, accuracy of microstructures, and number of parts that cannot be fulfilled easily by mainstream silicon-based micromachining technologies. LIGA, an alternative microfabrication process combining deep X-ray lithography, plating-through-mask and molding, enables the highly precise manufacture of high-aspect-ratio microstructures with large structural height ranging from hundreds to thousands of micrometers thick. These tall microstructures can be produced in a variety of materials with well-defined geometry and dimensions, very straight and smooth sidewalls, and tight tolerances. LIGA technology is also well suited for mass fabrication of parts, particularly in polymer.Many microsystems benefit from unique characteristics and advantages of the LIGA process in terms of product performance. The LIGA technology is briefly reviewed. The strengths of the manufacturing method and its main fields of application are emphasized with examples taken from various groups worldwide, especially in micromechanics and microoptics. 相似文献
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This paper provides a review, directed at scientists and engineers concerned with microsystems technology, of advances in microelectromechanical systems (MEMS). The emphasis is on silicon technology, where the electrical properties of the material are exploited in circuitry and the mechanical properties are used in sensor and microstructure applications. Developments in surface micromachining are discussed, and applications in sensors, microelectronic devices, vacuum microanalysis systems, microfluidics, and optoelectronic subsystems are reviewed. Some emerging technologies are assessed and promising new research directions are identified 相似文献
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V. Kempe 《e & i Elektrotechnik und Informationstechnik》1999,116(9):509-521
Additionally to the very large scale integrated information processing systems, the second Silicon revolution brings non-electrical functions on the same chip. Chips emerge which are able to sense, to think, to act and to communicate. They are beginning to penetrate into all spheres of human life. Low production costs and mature manufacturing technologies are necessary preconditions for the commercial success. Therefore, going back to the well-proven and costefficient microelectronic technologies and production plants was one of the most important ways towards the broad market penetration of microsystems. However, an extension of the microelectronic technologies is inevitable. In the paper, based on the microsystem development activities of Austria Mikro Systeme Int., problems of microsystem development and solutions are presented for a microelectronic compatible manufacturing environment. With it, the paper describes CMOS compatible products like magnetosensor-IC’s based on Hall elements, mechanical systems like acceleration sensors and specific pre-and post-processing process extensions with service possibilities for external organisations. 相似文献