2010-08-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/704641摘要：本計劃目標在於整合燃料電池與電動輪椅系統，利用先進控制&#63972;&#63809;，針對燃料電池系統設計多變&#63849;控制器，以達到穩定的電壓與電&#63946;輸出，作為電動輪椅混合動力的來源。燃料電池是將燃料的化學能透過電化學反應直接轉換為電能和熱能的一種直接能源轉換裝置，我們所採用的質子交換膜燃料電池係以氫氣及氧氣為輸入，而輸出對應的電壓及電&#63946;；就系統控制而言，此燃料電池系統具有非線性且時變的特性，因而其電壓與電&#63946;之輸出受到系統變化的影響很大。然而穩定的電源對於電器產品的安全及壽命有深遠的影響，尤其對於電動輪椅的電源供應，更是具有穩定性以及安全性的雙重考量；因此如何達到穩定的電源供應，以及減少氫燃料的消耗，是本研究著重的課題。由本團隊之前的研究結果顯示，我們可以在不同操作點將燃料電池系統模擬成多變&#63849;線性系統，並且利用強韌控制&#63972;&#63809;，在燃料電池負載改變的情形下，不但可以達到穩定的電壓輸出，還可有效調節輸入燃料的損耗。因此本計畫將針對所採用的電動輪椅系統，自行組裝一個適當的燃料電池系統，並且依據系統識別結果，建立適當的模型，以進行各種先進控制器的設計。我們設計的目的是希望在系統負載變動，以及系統狀態改變的情況下，仍能有效控制燃料電池電壓、電&#63946;的輸出，以驅動電動輪椅，並且能夠達到節省氫燃料的目的。氫氣燃料的節省，意味著電動輪椅的續航力，因此可使用更低電量的燃料電池及輔助電池，進而減少了整車重量，達到輕量化，與節約能源之目的。最後，則計畫將燃料電池控制系統與電動輪椅系統整合，進行實際測試。 <br> Abstract: This project integrates the preoten exchange menebrane fuel cell (PEMFC) system with an electrical wheel chair. By applying advance multivariable controller strategies, such as robutst contol and adaptive controller, we will implement suitable controllers on the proposed PEMFC system to provide steady power for the electrical wheel chair. For a PEMFC system, the inputs are hydrogen and oxygen, while the outputs are cell voltage and current. It is noted that the PEMFC systems are highly nonlinear and time-varying. And the voltage and current output are much influenced by the operation conditions, such as temperature and loadings. However, steady power supply is critical for the electrical wheelchair, in order to achieve stability and safty. Therefore, advanced control algorithms should be used to control the PEMFC systems. From our previous studies, the PEMFC systems can be modelled as linear transfer function matrices on specified operating points, and multivariable robust controllers can be designed to achieve steady output power and fuel reduction. The project will be carried out in three phases. At first, we will assemble a suitable PEMFC system for the electrical wheelchair, and then find the system characteristics by identification techniques. At the second stage, we will apply various control strategies to increase the performance and efficiency of the PEMFC system. Finally, the optimal controller will be implemented on a DSP chip for system miniaturization, and integrated with the wheelchair system for field tests.燃料電池電動輪椅強韌控制電力管理系統整合fuel-cellelectric wheelchairrobust controlpower managementsystem integration