The widespread use of embedded systems mandates the development of industrial software design methods, i.e. computer-aided design and engineering of embedded applications using formal models (frameworks) and standardized prefabricated components, much in the same way as in other mature areas of engineering such as mechanical engineering and electronics. These guidelines have been used to develop Component-based Design of Software for Embedded Systems (COMDES). The paper gives an overview of the COMDES framework, followed by a presentation of a generic component types, such as function blocks, activities and function units. The execution of function units is discussed in the context of a newly developed execution model, i.e. timed-multitasking, which has been extended to distributed embedded systems.
標(biāo)簽： development widespread industrial embedded
上傳時(shí)間： 2014-01-23
上傳用戶：z754970244
C 開發(fā)的有限元軟件，界面還可以，不錯(cuò)，可以試試。 FElt is a free system for introductory level finite element analysis. It is primarily intended as a teaching tool for introductory type courses in finite elements - probably in the mechanical/structural/civil fields. In a command line environment, FElt uses an intuitive, straightforward input syntax to describe problems. It also includes a graphical user interface for workstations that allows the user to set-up, solve and post-process the problem in a single CAD-like environment.
上傳時(shí)間： 2014-03-09
上傳用戶：zycidjl
C51源程序集合 包括以下目錄源碼 ├─AD-MSP430f149D ├─ADC8535 ├─bin ├─c51源程序 ├─c51源程序錦集 ├─ct2Timer ├─py-sc ├─py-sc+ └─thermo
標(biāo)簽： c51 ct2Timer AD-MSP 8535
上傳時(shí)間： 2013-12-15
上傳用戶：sy_jiadeyi
Modern, large scale, display systems are migrating from traditional technologies such as incandescent, fluorescent and mechanical to sophisticated products based on LEDs. LED displays offer power savings and a superior visual experience in a range of products from programmable signage to large-scale video displays and commercial installations.
標(biāo)簽： technologies traditional incandesc migrating
上傳時(shí)間： 2013-12-19
上傳用戶：cursor
對(duì)微機(jī)電系統(tǒng)(Micro electro mechanical systems，MEMS)組裝與封裝工藝的特點(diǎn)進(jìn)行了總結(jié)分析，給出了MEMS組裝與封裝設(shè)備的研究現(xiàn)狀。針對(duì)MEMS產(chǎn)業(yè)發(fā)展的特點(diǎn)，分析了面向MEMS組裝與封裝的微操作設(shè)備中的工藝參數(shù)優(yōu)化數(shù)據(jù)庫(kù)、快速精密定位、模塊化作業(yè)工具、快速顯微視覺、柔性裝夾和自動(dòng)化物流等關(guān)鍵技術(shù)。在此基礎(chǔ)上，詳細(xì)介紹了研制的MEMS傳感器陽(yáng)極化鍵合設(shè)備和引線鍵合設(shè)備的組成結(jié)構(gòu)，工作原理，并給出了組裝和封裝試驗(yàn)結(jié)果。最后，指出了MEMS組裝與封裝技術(shù)及設(shè)備研制的發(fā)展趨勢(shì)。
標(biāo)簽： 微機(jī)電系統(tǒng) 封裝 關(guān)鍵技術(shù) 操作
上傳時(shí)間： 2016-07-26
上傳用戶：leishenzhichui
The mature CMOS fabrication processes are available in many IC foundries. It is cost-effective to leverage the existing CMOS fabrication technologies to implement MEMS devices. On the other hand, the MEMS devices could also add values to the IC industry as the Moore’s law reaching its limit. The CMOS MEMS could play a key role to bridge the gap between the CMOS and MEMS technologies. The CMOS MEMS also offers the advantage of monolithic integration of ICs and micro mechanical components.
標(biāo)簽： TECHNOLOGY CMOS MEMS KEY
上傳時(shí)間： 2020-06-06
上傳用戶：shancjb
For more than three decades, Micro Electro Mechanical Systems (MEMS) have steadily transitioned out of research labs and into production forming a more than $10 billion market [1]. MEMS devices such as accelerometers, pressure sensors and microphones, to name a few, have seen immense utilization, particularly in the consumer electronics market, because of their compact sizes and minute power consumptions. In addition, these devices benefit from batch fabrication, which has enabled year-over-year reductions in cost [2]. In recent years,
標(biāo)簽： Frequency Tunable MEMS
上傳時(shí)間： 2020-06-06
上傳用戶：shancjb
Micro-Electro-Mechanical Systems (MEMS) are miniature systems composed ofintegratedelectricalandmechanicalpartstosenseand/orcontrolthingsonaμmscale. The concept of MEMS is attributed to Richard Feynman’s famous talk on December 29th, 1959 [2,3]. Dr. Feynman foresaw many aspects of future MEMS development with his insight in microphysics. In particular, material properties in the μm scale are differentfrombulkpropertiesandthescalingdownofintegratedcircuits(IC)fabrication technology has been a major driving force of MEMS development.
標(biāo)簽： Performance High MEMS RF
上傳時(shí)間： 2020-06-06
上傳用戶：shancjb
Recent advancements in nanotechnology (NT) materials and growth of micro/ nanotechnology have opened the door for potential applications of microelectro- mechanical systems (MEMS)- and NT-based sensors and devices. Such sensors and devices are best suited for communications, medical diagnosis, commercial, military, aerospace, and satellite applications. This book comes at a time when the future and well-being of Western industrial nations in the twenty-first century’s global eco- nomy increasingly depend on the quality and depth of the technological innovations they can commercialize at a rapid pace.
標(biāo)簽： MEMS
上傳時(shí)間： 2020-06-06
上傳用戶：shancjb
Over many years, RF-MEMS have been a hot topic in research at the technology and device level. In particular, various kinds of mechanical Si-MEMS resonators and piezoelectric BAW (bulk acoustic wave) resonators have been developed. The BAW technology has made its way to commercial products for passive RF filters, in particular for duplexers in RF transceiver front ends for cellular communica- tions. Beyond their use in filters, micromachined resonators can also be used in conjunction with active devices in innovative circuits and architectures.
標(biāo)簽： MEMS-based Circuits Systems and
上傳時(shí)間： 2020-06-06
上傳用戶：shancjb
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