Passivity Based Backstepping Control of an Elastic Robot
Sprache des Titels:
Romansy 18, Robot Design, Dynamics and Control
In industry plants, a trade of between the requirements
of speed and cost efficiency often results in lightweight constructions. However, this introduces elastic deflections causing vibrations and a loss in tracking precision. Hence, investigations in suitable models and control laws are necessary. By using the Projection
Equation with a Ritz expansion, a set of nonlinear ordinary differential equations which describes the motion of the system is developed. The utilized control law is a combination of a feedforward and a feedback scheme. The latter is based on backstepping methods, with respect to passivity ports. Finally experimental results
are shown to verify the proposed control strategy.