Abstract
A decentralized control concept for the active damping of elastic boom vibrations of a mobile concrete pump is presented. The weaknesses of the existing hydraulic actuation concept in view of the control task are identified and an alternative concept is proposed. Furthermore, a systematic approach for the derivation of a tailored simulation model is illustrated. Based on the mathematical description of the hydraulic system a feedforward controler for the cylinder piston velocity is designed. The proposed passivity-based feedback control law is motivated by the analysis of a single rotating flexible beam with the angular velocity as a virtual control input. The methods are tested by means of simulation results on a validated mathematical model of a mobile concrete pump.
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