The manipulator is a kind of action function that can imitate hands and arms, which can be used to capture, move objects or operate tools automatically according to the fixed procedure.It is characterized by the ability to programmatically perform the various expected jobs, construction and performance of both human and mechanical advantage.

Manipulator is the first industrial robots, is also the first modern robot, it can be hard work instead of human to realize mechanization and automation of production, operating in a hazardous environment to protect the personal safety, thus is widely used in machinery, metallurgy, electronics, light industry and atomic energy etc.