Innovative design and control of robotic manipulator for chemically aggressive environments

The paper deals with kineto-static analysis of the AGgressive Environment roBOT (AGEBOT). Serio-parallel kinematic architecture of AGEBOT plays important role in aggressive environment applications such as manipulation in industrial degreasing and paint removing lines in the presence of high pressure and temperature, acid or lye. Standard 4DoF serial manipulator with PRRR joints is equipped with special 3DoF parallel spherical wrist which makes possible to separate vulnerable components (motors, sensors) from the rest of the end-effector by a water-proof barrier. Inverse and direct kinematics are discussed. The algorithm for velocity, acceleration and static forces (gravity compensation) is derived. In the case of known inverse and direct position dependencies proposed algorithm can be generalized for an arbitrary serial or parallel manipulator.