Developmental Research of Training System for the Operator of The Space Manipulator

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The manipulator which is used in the space is considered to be the payload for the rocket when it is launched from the earth. That is one of the reasons why the space manipulator must be designed to be as light as possidle. In the space,the gravity is near zero. It means that the manipulator need not support the weight of the handling material.Considering these conditions,the space manipulator is designed to be slim and flexible differing from the manipulator on the earth.The space manipulator is operated by the master-slave system. It is sure that the operation of a flexible slave manipulator by a rigid master arm is very difficult and skillful work is necessary.The purpose of this research is to develope a training system in order that the operator of the space manipulator can have a training on the earth.The most important matter is to reduce the vibration of the flexible manipulator. if we can install the vibration-reduction controller between a master arm and a slave manipulator,t … More he operation will be much easier. For this purpose,many theoratical studies have been done for control of vibration of a flexible arm.Mathematical modeling of the flexible arm is vEry important to discuss the vibration control. Dynamics of the flexible arm must be solved in real time to control the vibration. There are many studies of analysis of flexible manipulators using FEM(finite element method). However FEM can not be applied for real time problems. A simple but essential model must be introduced.In this research the quasi-dynamical model is introduced. We consider a massless beam and mass is considered only at the and point of a beam. The deformation curve is assumed to be the same to the static deformation curve of a massless beam decided from boundary conditions at the both ends a beam. For a such mobel, it is easy to control the vibration.we constructed the actual master-slave system and put the vibration controller between a master arm and a slave manipulator. This system can be operated easily comparing with the system without the vibration controller. Less