電/磁流變液應用於離合器之動態模擬與分析

Dynamic Simulation and Analysis of ER/MR Clutches

李居歷(Chu-Li Lee)

指導教授 ： 蕭耀榮

國立臺北科技大學/機電學院/車輛工程系所/碩士(2007年)

摘要

電流變液與磁流變液是屬於使用性能較為突出的智慧型材料，在加入電場或磁場的環境下，可以迅速的改變本身的物理性質(黏滯性)，應用在離合器上，可快速達到能量的傳遞。在發現這兩種先進材料後，對於它們的特性及成分，開始有相關的實驗及研究。本論文主要為架設離合器硬體平台，將兩種智慧型材料應用於所屬之離合器硬體中，作離合器的動態特性分析。論文分為兩部分，第一部分為電流變液，將草酸鈦氧基鋇、沸石粉和太白粉三種材料配製成電流變液體，測試它們的材料特性與比較效能，再應用於設計的電流變液離合器硬體上，在不同的電場強度和轉速下，測試離合器的動態輸出響應。第二部分則以磁流變液作測試，配合磁流變液離合器，將電場轉換成磁場，給予不同的電流與轉速，測量磁流變液的輸出的動態響應特性並分析其性能。最後將電流變液與磁流變液作分析比較，並探討未來發展與應用。

關鍵字

智慧型材料 ； 電流變液 ； 磁流變液 ； 離合器

並列摘要

Electrorheological fluids(ER) and magnetorheological fluids(MR) are excellent intelligent materials that are in engineering application. When an electric field or magnetic field is applied to ER or MR, they can change their physical property (viscosity) quickly and then transmit energy through. Researchers performed some relevant experiments to investigate the characteristics and compositions of these two intelligent materials. This thesis focus on the analysis the dynamic characteristics of a clutches which use ER/MR as the engaging media. A ER/MR clutch test platform is set up and ER/MR is used in the clutch. The thesis consists of two parts. The first part is about the dynamic characteristics of ER fluids. Three kinds of materials, self-made barium titanyl oxalate, zeolite powder and potato flour are used to make the ER fluids respectively. Their dynamic properties and compared. Then these three kinds of ER fluids is filled into ER clutch respectively to perform experiments. Under different electric field intensities and rotation rates, the dynamic output responses of the clutch is tested and analyzed. The second part is the dynamic test of the MR. The electric field is changed into the magnetic field to cooperate with the MR clutch. Under different currents and rotation rates, the dynamic output responses of the MR clutch is tested and analyzed. Finally, the dynamic performances of ER/MR clutches are compared. The application of ER/MR clutch in the future is also discussed at the end of this thesis.

並列關鍵字

Electrorheological Fluids ； Magnetorheological Fluids ； Clutch

參考文獻

[2] Wereley, N.M. and Pang, L., “Nondimensional Analysis of Semi-Active Electrorheological and Magnetorheological Dampers Using Approximate Parallel Plate Models”, Smart Materials and Structures, 7, 1998, pp.732-743.

[3] Gavin, H.P., Hanson, R.D. and Filisko, F.E., “Electrorheological Dampers, PartⅠ:Analysis and Design”, Journal of Applied Mechanics, 63, 1996, pp.669-675.

[4] Gavin, H.P., Hanson, R.D. and Filisko, F. E.,“Electrorheological dampers, PartⅡ:Testing and Modeling”, Journal of Applied Mechanics, 63, 1996, pp.676-682.

[5] Choi, S.B., Choi, Y.T., Chang, E.G., Han, S.J. and Kim, C.S. “Control Characteristics of Continuously Variable ER Damper”, Mechatronics, 8, 1998, pp.143-161.

[6] Choi, S.B., Lee, H.K. and Chang, E.G., “Field Test Results of A Semi-Active ER Suspension System Associated With Skyhook Controller”, Mechatronics, 11, 2001, pp.345-353.