Active control bending coupled vibration electrohydraulic type circumferential loaded actuator

Abstract

This invention is a self controlling fluid load-adding executive device, and is related to an initiative vibration-reducing technology using liquid as medium to control. This invention is composed of oil-supplying, isobarical, oil-returning and jetting systems. The jetting system is made up of bearing base, bearing, high pressure soft pipe and a set of valve of commutating oil-jetting. On the bearing are two sets of inclined oil-sprouting gobs and cone-shaped pre-hole which is linked to the corresponding oil-inputting hole on the bearing base. The oil-inputting hole is connected to the set of valves of commutating oil-jetting through the high pressure soft pipe. The set of valves is linked to the high pressure container through the high pressure oil pipe. This invention is based on the vibrating signals detected to add load on the vibrating bearing through fluid medium, meanwhile the controlling bearing set can supply strong fluid power and adjust the unbalance of oil film of bearing set, the bearing base is not limited by the equipping position, the set valves controls the length of oil-sprouting time and load-adding power to achieve vibration-reducing.

Description

technical field [0001] The invention belongs to the field of mechanical vibration and its control, and specifically relates to an active vibration reduction technology that uses fluid as a medium to transmit power, and uses an electro-hydraulic control method to control low-frequency bending torsion and coupled vibration of a rotating shaft system. Background technique [0002] At present, in the field of mechanical dynamics (vibration) and its control, active control technology has become a research hotspot. The vibration active control system can be divided into four parts like the common feedback control system: I. The control object is the vibrating body; II. The vibration signal collector; III. The controller; IV. The actuator. Among them, the controller that realizes the control objective function and the actuator that loads the control force are two key points in the design and development of the active vibration control system. It is known that there are actuators w...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of low loading force of electromagnetic and piezoelectric actuators in the active vibration control actuators of the existing rotating shaft system, which are greatly affected by the environment, complicated control systems and problems of oil film bearings, piezoelectric actuators, Magnetostrictive material actuators cannot control torsional vibration, and oil film bearings have the problem of oil film instability, etc., and provide an electro-hydraulic circumferential loading actuator that actively controls bending vibration and torsional vibration

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