太陽能輔助電動輪椅系統架構之研製

Design and Implementation of System with Electric Wheelchair by Solar Energy

游明輝(Ming-Hui Yu)

指導教授 ： 謝聰烈

崑山科技大學/工程學院/電機工程研究所/碩士(2010年)

摘要

本文主要以重心可移之坐臥兩用電動輪椅為核心，利用搖桿下達命令，以模糊法則控制兩顆直流馬達實現電子式差速器，達到全方位之輪椅移動目的，並藉由控制椅背的升降達到坐臥兩用的功能。另外，為了增加電動輪椅續航力，整合雙晶順向式轉換器及降壓式轉換電器為本驅動系統之電源轉換電路，利用太陽能板經降壓式轉換器，配合最大功率追蹤並採用限電流自變式擾動觀察法，改善擾動觀察法之缺點，獲得較為快速且穩定之最大功率追蹤效益，作為輔助電動輪椅之續航力。當蓄電池電力不足時，則改由市電經雙晶順向式轉換器對蓄電池進行充電，充電方式採用混合定電壓定電流控制，可操作在市電充電模式及太陽能輔助模式，達到雙工作模式，增加行動不便族群使用的方便及安全性。最後利用單晶片處理器，實現模糊控制之電子式差速器，並且透過RS-232實際操作並紀錄所量測之數據，加以證明整體輔助模式及充電模式之實際效益。

關鍵字

最大功率追蹤 ； 模糊控制 ； 電子式差速器

並列摘要

Based on dual-purpose wheelchair for sitting and lying ordered by a stick, the main idea of the thesis is to achieve the goal of all-round movement on wheelchair by controlling the up and down on the back of the chair for the dual purposes, and the two DC motors for the electronic-style Differentials with the “Fuzzy Control.” Besides, in order to increase the continuity of electric wheelchair, we integrated the dual-chipped clockwise converter with the volt-repressed converter as the transferring circuit of power. With the solar panel and the tracing on the maximal power, we adopted the limiting-current and auto-adjustment perturbation observation and improve its shortcomings. Thus, we can obtain faster and steadier avail of maximal power tracing to assist the electric wheelchair in keeping continuity. When the storage battery runs out of power, we will charge the battery with the dual-chipped clockwise converter through the electricity grid. The way we charge is the control with both specific volt and specific current, which is practical under the power charging mode and the assistance of solar energy. Thus, such a dual-working mode enhances the security and convenience for the handicapped. Finally, we make use of the mono-chipped processor to build up the electronic-style Differentials under the “Fuzzy Control.” Moreover, we can testify the practical utility of the whole assistance mode and charging mode through RS-232 operation and statistic records.

並列關鍵字

MPPT ； Fuzzy Control ； Electronic-style Differentials

參考文獻

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