臺灣大學: 機械工程學研究所陽毅平曾富偉Tzeng, Fu-WeiFu-WeiTzeng2013-04-012018-06-282013-04-012018-06-282010http://ntur.lib.ntu.edu.tw//handle/246246/256200內燃機引擎已發展多年，相當多研究致力於提升內燃機引擎的效率。而內燃機引擎的效率增進，則可利用可變汽門正時機制來改善引擎性能。引擎性能的增進包含提升燃油效率以及降低排廢氣量。電磁式汽門可提供更自由的汽門正時，相較於利用凸輪軸帶動之汽門系統，電磁式汽門可將各汽門獨立控制。本文研究主軸為利用雙通道平行磁通混合磁動式電磁閥門系統來達成汽門需求。首先根據引擎操作上的限制擬定規格需求，再藉由數學模型分析建立磁路模型，並透過最佳化軟體來決定最佳參數。最後經過有限元素法分析驗證以決定設計參數。我們將電磁閥門系統的數學模型建立在電腦軟體上，以增進發展控制理論的效率。為了降低噪音與磨耗並提升閥門壽命，我們發展了重複學習控制並實際測試。實驗的結果重複學習控制可以有效降低電樞的著陸速度，並達到降低噪音的效果。未來將此電磁閥門系統取代凸輪軸閥門系統並配合上正確汽門正時控制，將可有效提升燃油引擎之性能。Internal combustion engines had been developed for many years, and many studies were devoted to improve performance of internal combustion engines. Electromechanical valve actuator (EMVA) drives each valve independently for achieving variable valve timing (VVT). The main issue of the research is to achieve demands of the valves by the designs of a dual-channel parallel flux and hybrid magneto-motive force (MMF) valve system. The design procedures are: establishing mathematical model via magnetic circuit, optimization, and verification by finite element analysis (FEA). Mathematical model of EMVA is established in computer software to promote efficiency of developing control theory. Repetitive learning control (RLC) was developed to achieve soft landing and reduce noise and wear. The experimental results show that RLC significantly reduces armature landing velocity and noise. It is expected that the EMVA system with correct VVT control can replace camshaft-valve system and improve internal combustion engine performance in the future.2834451 bytesapplication/pdfen-US電磁閥混合磁動勢可變汽門正時重複學習控制EMVAhybrid MMFVVToptimal designrepetitive learning controlthesishttp://ntur.lib.ntu.edu.tw/bitstream/246246/256200/1/ntu-99-R95522820-1.pdf