考慮三種目標函數, 尋求最小值. 限制式為奇異之積分微分並列方程式.我們介紹數植方法求得函數最小值, 並找出最佳控制. We consider numerical optimal controls for a class of singular integro-differential equations originally from aeroelasticity issue. By minimizing three typical criterions and comparing the alternative controls, we obtain the corresponding optimal controls