Abstract: How to make intelligent equipment run in a long period with few faults has attracted extensive attention by scholars at home and abroad,while unbalance vibration is one of its typical faults and still no effective online suppression method. Based on the basic principle of balance liquid transfer driven by compressed air, a novel fault self-recovery regulation system of pneumatic liquid type integrated in the rotating shaft is constructed to restrain the unbalance fault in real time by adjusting the mass distribution of the balancing actuator, which can improve its operation safety and reliability. The performance parameters of balancing actuator, such as balancing speed and balancing precision, are analyzed quantitatively, and the effectiveness of the system is on the simulation test rig. The experimental results show that the system can effectively suppress the unbalance vibration of the test rig at multiple rotational speeds, the vibration reduction is more than 80%, and the maximum experimental speed is 15 600 r/min. It lays a technical foundation for the practical industrial application of the follow-up high-speed unbalance vibration self-recovery regulation system.

Key words: high-speed equipment, self-recovery regulation, unbalance vibration, pneumatic liquid, automatic balancing