TY - GEN
T1 - Motion control for a redundantly actuated parallel electrohydraulic mechanism
AU - Gao, Changhong
AU - Yang, Zhidong
AU - Cong, Dacheng
AU - Yang, Chifu
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/11/24
Y1 - 2015/11/24
N2 - In this paper, a motion controller for a redundantly actuated parallel electrohydraulic mechanism (RA-PEHM) is developed that includes a position tracking loop and an internal force rejecting loop. Electrohydraulic and rigid body models are built. The structure of internal force space is analyzed. Model-based position control for rigid-body degrees of freedom (DOF) is proposed, using a fast inner force loop to track programming desired generalized forces thereby reproducing desired position. Force control based on real-time solution of the basis of the internal force space for redundant DOF is used to reject internal forces, which are usually caused by some factors, such as inconsistent dynamic behavior of drive units, zero drift of servovalves and measuring error of sensors. Simulation results show the proposed control scheme has good position tracking performance and effectively reduces the internal force simultaneously.
AB - In this paper, a motion controller for a redundantly actuated parallel electrohydraulic mechanism (RA-PEHM) is developed that includes a position tracking loop and an internal force rejecting loop. Electrohydraulic and rigid body models are built. The structure of internal force space is analyzed. Model-based position control for rigid-body degrees of freedom (DOF) is proposed, using a fast inner force loop to track programming desired generalized forces thereby reproducing desired position. Force control based on real-time solution of the basis of the internal force space for redundant DOF is used to reject internal forces, which are usually caused by some factors, such as inconsistent dynamic behavior of drive units, zero drift of servovalves and measuring error of sensors. Simulation results show the proposed control scheme has good position tracking performance and effectively reduces the internal force simultaneously.
KW - internal force rejection
KW - internal force space
KW - model-based control
KW - parallel electrohydraulic mechanism
KW - redundant actuation
UR - https://www.scopus.com/pages/publications/84962594709
U2 - 10.1109/FPM.2015.7337265
DO - 10.1109/FPM.2015.7337265
M3 - 会议稿件
AN - SCOPUS:84962594709
T3 - Proceedings of 2015 International Conference on Fluid Power and Mechatronics, FPM 2015
SP - 1019
EP - 1023
BT - Proceedings of 2015 International Conference on Fluid Power and Mechatronics, FPM 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 7th International Conference on Fluid Power and Mechatronics, FPM 2015
Y2 - 5 August 2015 through 7 August 2015
ER -