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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

B2B企業的客製化產品之產品創新模式探討-以印刷電路板業A公司軟硬複合板的開發為例

周政賢, Chou, Jason Unknown Date (has links)
關於產品創新的研究,絕大多數學者均以B2C的企業產品作為研究探討的對象,強調以新的產品設計帶給消費者全新的生活體驗與感受。相較之下B2B的企業產品,特別是客製化零組件產品,業者大多只能以改善製程生產效率、提升良率等手法來維持競爭力。印刷電路板業即為上述B2B客製化零組件產品在台灣地區的代表性產業。本研究即以我國印刷電路板業A公司軟硬複合板的開發為例,探討此種B2B企業的客製化產品之產品創新模式。 本研究由相關文獻探討,推展出以「新產品開發管理」、「製程技術開發管理」與「組織文化」此三個構面的研究架構來探討印刷電路板業在產品創新活動的關鍵因素與管理項目,採個案研究法深入訪談個案公司的高階主管,以瞭解其產品創新過程的實務作為。由個案分析與研究發現得出研究結論如下: 結論一:在B2B企業的客製化產品開發過程中,明確的產品策略,具體的產品概念,和互動良好的客戶參與,是新產品開發成功的關鍵因素。 結論二:機器設備的開發與實驗活動,對B2B製造業的製程技術開發占有關鍵地位。 結論三:有效的知識管理及技術開發人員的管理與領導,是B2B客製化產品企業之製程開發活動中重要的管理項目。 結論四:差異化的企業組織策略,創新的價值觀與高階主管對創新活動的支持,對產品技術創新的成功有正面的影響。 / Regarding product innovation, a lot of studies did focus on B2C business, try to find a way to create “new feeling” product for consumers. For B2B business, especial for customization product, most firms do effort for production efficiency increasing, yield rate improvement, and cost reduction to maintain the competition. Printed circuit board (PCB) is this kind of industry in Taiwan typically. This research bases on a PCB company (A-company) rigid-flex PCB development case, to study B2B business’s product innovation model. The three major constructs of the research framework include new product development and its management, new process development and its management, and organizational culture. This research adopts case-study method to analysis the practice actions in A-company. The research results as below: 1. Clear product strategy, solid product concept, and good customers’ join, are the key points to get new product development success. 2. Equipment development and experiment actions are very important factors for process technology development in B2B firms. 3. Well knowledge management, good R&D people management and leadership, are the important management items for process technology development in B2B firms. 4. Differentiation strategy, innovation value, and top managers’ attitude for innovation action supporting, will lead product technology innovation success.
2

Micromachined flow sensors for velocity and pressure measurement

Song, Chao 27 August 2014 (has links)
This research focuses on developing sensors for properties of aerodynamic interest (i.e., flow and pressure) based on low-cost polymeric materials and simple fabrication processes. Such sensors can be fabricated in large arrays, covering the surface of airfoils typically used in unmanned vehicles, allowing for the detection of flow separation. This in turn potentially enables, through the use of closed-loop control, an expansion of the flight envelope of these vehicles. A key advance is compensation for the typically inferior performance of these low cost materials through both careful design as well as new readout methods that reduce drift, namely a readout methodology based on aeroelastic flutter. An all-polymer micromachined piezoresistive flow sensor is fabricated, based on a flexible polyimide substrate and an elastomeric piezoresistive composite material. The flow sensor comprises a cantilever that is extended into the embedding flow; flow-induced stress on the cantilever is sensed through the piezoresistive composite material. Increasing the sensitivity of the sensor is achieved by either utilizing a long single-cantilever beam or using a dual-cantilever beam supporting a flap extending into the flow. In the latter case, the sensor demonstrates increased sensitivity with a reduced cantilever length. The increase in sensitivity helps to reduce sensor drift, which in turn is further reduced by a new measurement method, the vibration amplitude measurement method. In this drift reduction measurement method, the flow-induced vibration amplitude of the sensor structure (i.e., the amplitude of the aeroelastic flutter induced by the flow), instead of the absolute value of cantilever deflection, is measured in order to find the flow rate. Measurement of this relative resistance change instead of the absolute resistance in the piezoresistor rejects common-mode drift and greatly reduces overall drift. Experimental results verify the expected drift reduction. Sensor drift is also reduced when the elastomeric piezoresistive material is replaced by a Pt thin film piezoresistor. Development of pressure sensors based on polymers proceeds by encapsulating a reference cavity within a multilayer polymer structure and forming capacitor plates on the polymeric membranes encapsulating the cavity. Measuring the capacitance change induced by changes in the embedding pressure (which cause changes in the positions of the bounding polymeric membranes) enables calculation of the pressure. The use of polymeric membranes requires understanding the leakage rate of gas into the reference cavity, which is a source of pressure drift. Developing a polymer-based pressure sensor that solves the problem of sensor drift as a result of gas permeation entails the fabrication of a silicon pressure reference cavity embedded in the polymer substrate, which results in a more hermetic and lower drift sensor while preserving the flexibility of the embedding polymer. Both wired and wireless versions of pressure and flow sensors of these types were developed and characterized. Further, the sensors were characterized on airfoils and their performance in a wind tunnel was determined.

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