本研究目的在改進習知氣液壓混合系統設計中的缺點，並設計一改良後之新系統。在習知的系統中，將氣壓轉換為油壓，並以此推動液壓馬達作功之設計已經實現，並以機械式控制來完成系統循環。但其缺點為只能以預先設定之操作模式運作，缺少彈性。
為解決上述之缺點，本研究中導入電控方式，使原系統能在不同模式中切換；同時加快相位轉換的速度，減少過程中氣體的損耗。最後設計一改良式氣液壓混合系統，簡化原系統之架構並縮小體積，以期獲得更佳之效率。

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