Experiment research on control performance for the actuators of a deep-sea hydraulic manipulator

A greater control performance of underwater slave arm actuator modules could improve the efficiency and accuracy of the whole master-slave manipulator system. In this paper, the development of the 7-function manipulator can be used in 7000m depth is introduced firstly, and then a hierarchical control scheme is researched to control the manipulator system. The information passed to the lower control system is usually only a higher level decision command, so the hydraulic actuators of the slave arm must be capable of following the command to complete complex tasks in different depth rating underwater environment. In order to ensure the operation reliability of the manipulator, the control performance of the hydraulic actuators of the manipulator has been emphatically verified through on-line pressure experiments in this paper, and the results are reported in detail. Meanwhile, more experiments around the manipulator are researched in this paper.