Sliding Mode Control with Feedforward Compensation for a Soft Manipulator That Considers Environment Contact Constraints
JOURNAL OF MARINE SCIENCE AND ENGINEERING(2023)
摘要
Soft manipulators have desirable environmental compatibility because of their pliability. However, this pliability also brings challenges to modeling and control when considering contact or collision with the environment. In previous work, we established several mathematical models for describing fluidic soft manipulators under environmental effects and verified their accuracy. However, the controller design for a soft manipulator is still a significant challenge, especially under the conditions of environmental contact. In this paper, we build upon our previously established work by conducting feedforward compensation for a soft manipulator under contact constraints and designing a sliding mode controller based on an operational space dynamics model. Then, we combine the feedforward compensation model with the sliding mode controller to realize accurate position control of the soft manipulator. Finally, simulation and experimental results show that this controller can accurately and effectively control the position of the soft manipulator.
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关键词
contact constraint,motion control,sliding mode controller,soft manipulator feedforward compensation
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