This paper presents a robust force tracking control of a flexible gripper driven by a piezoceramic actuator characterizing its durability and quick response time. The mathematical governing equation for the proposed system is derived by employing Hamilton’s principle and a state space control model is subsequently obtained through the modal analysis. Uncertain parameters such as frequency variation are included in the control system model. The sliding mode control theory which has inherent robustness to the system uncertainties is adopted to design a force tracking controller for the piezoceramic actuator. Using the output information from a tip force sensor, a full-order observer is constructed to estimate state variables of the system. Force tracking performances for desired trajectories represented by sinusoidal and step functions are evaluated by undertaking both simulation and experimental works. In addition, in order to illustrate practical feasibility of the proposed method, a two-fingered gripper is constructed and its performance is demonstrated by showing a capability of holding an object.
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September 1997
Technical Papers
Force Tracking Control of a Flexible Gripper Driven by Piezoceramic Actuators
Seung-Bok Choi,
Seung-Bok Choi
Smart Structures and Systems Laboratory, Department of Mechanical Engineering, Inha University, Incheon 402-751, Korea
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Chul-Hee Lee
Chul-Hee Lee
Hyundai Motor Company, Ulsan 681-791, Korea
Search for other works by this author on:
Seung-Bok Choi
Smart Structures and Systems Laboratory, Department of Mechanical Engineering, Inha University, Incheon 402-751, Korea
Chul-Hee Lee
Hyundai Motor Company, Ulsan 681-791, Korea
J. Dyn. Sys., Meas., Control. Sep 1997, 119(3): 439-446 (8 pages)
Published Online: September 1, 1997
Article history
Received:
April 9, 1996
Online:
December 3, 2007
Citation
Choi, S., and Lee, C. (September 1, 1997). "Force Tracking Control of a Flexible Gripper Driven by Piezoceramic Actuators." ASME. J. Dyn. Sys., Meas., Control. September 1997; 119(3): 439–446. https://doi.org/10.1115/1.2801276
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