Determination of Height of a Modified Stewart Platform for Various Sizes of Flexible Base

Since the development of Stewart platform as flight simulator by Stewart in 1965, many investigators have modified the constructional features of Stewart Platform to enhance its reach near to the base by imparting larger tilt angle of top platform. This paper presents a Stewart platform with flexible sized base and top platforms. The flexibility in the size of these platforms is obtained by providing mobile knots on the base and top platforms. The tilt angle of the top platform at various sizes of base platform has been determined and it is shown that the flexibility in the size of base platform imparts greater tilt angle to the top platform. It is also shown that height of Stewart platform for achieving maximum tilt angle is larger as compared to that of the proposed manipulator.