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Hydraulic synchronous driving system based on pressure feedback

A technology of hydraulic synchronization and drive system, applied in the direction of fluid pressure actuating device, servo motor, mechanical equipment, etc., can solve the problem that the asynchronous error cannot be eliminated and the consistency requirements are high, and achieve the reduction of consistency requirements and strong anti-interference ability. , the effect of reducing system cost

Active Publication Date: 2009-06-10
CENT SOUTH UNIV
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AI Technical Summary

Problems solved by technology

The hydraulic synchronous drive circuit controlled by speed feedback has high requirements on the consistency of components (such as motors and gears), and the asynchronous error caused by the machining error of mechanical transmission components cannot be eliminated

Method used

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  • Hydraulic synchronous driving system based on pressure feedback

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Embodiment Construction

[0011] As shown in the drawings, the present invention includes four pressure sensors 11, 12, 29, 30, two controllers 13, 31, three filters 1, 14, 19, quantitative pump 15, accumulator 16, fine filter device 36, three overflow valves 3, 17, 21, two servo valves 18, 32, two variable displacement pumps 2, 20, six check valves 4, 6, 7, 22, 24, 25, two three Four-position electro-hydraulic reversing valve 5, 23, four proportional relief valves 8, 9, 26, 27, two motors 10, 28, two small gears 33, 34, large gear 35; the first filter 1 oil inlet A 1 Connected to oil tank; oil outlet B of first filter 1 1 With the oil inlet A of the first variable displacement pump 2 2 Connected; oil outlet B of the first variable displacement pump 2 2 Respectively with the oil inlet P of the first relief valve 3 3 , the oil inlet A of the first one-way valve 4 4 Connected; return port T of the first relief valve 3 3 Connected with oil tank; oil outlet B of the first one-way valve 4 4 Respectiv...

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Abstract

The present invention discloses a hydraulic pressure synchronous drive system based on pressure feedback control, which includes a filter, a variable capacity pump, a over-flow valve, a one way valve, a servo valve, a energy accumulator, a fine filter, a constant rate pump, a three-position four-way electrohydraulic reversal valve, a proportionality over-flow valve, a motor, a pressure sensor, a controller and a pinion wheel connected on the motor in combined action with a gearwheel (big load ). The pressure on two ends of the motor is detected by the pressure sensor at real time, and supplement oil to the system through the pressure feedback control servo valve of motor in and out oil port, realize quick expiation to tiny speed fluctuation in motor quick running process, hence control rotate speed of the motor, form the hydraulic pressure synchronous drive system that can control at real time according to pressure feedback. The pressure feedback control is adopted in the invention, hence manufacturing accuracy of big and small wheel gears and consistency requirement to drive the motor performance are reduced, meanwhile synchronism and stability of drive performance are improved.

Description

Technical field [0001] The invention relates to a fluid pressure actuator, in particular to a hydraulic synchronous drive system based on pressure feedback under multiple driving conditions. technical background [0002] Multi-element drive is a drive method for heavy load or large inertia load, that is, when a single actuator cannot output enough force or torque, two or more systems need to work together. Synchronization problems exist when multiple (more than two) prime movers drive a load. If two or more small gears jointly drive a large gear, the commonly used synchronous control method is speed feedback control, which includes two methods: equivalent and master-slave. The equivalent type refers to independently controlling the speed of each small gear, so that it is infinitely close to the preset value to achieve the purpose of synchronously controlling the speed of the large gear; the master-slave type refers to taking the speed of one of the small gears as a referenc...

Claims

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Application Information

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IPC IPC(8): F15B11/22F15B11/05
Inventor 邓华夏毅敏李群明王艾伦何竞飞
Owner CENT SOUTH UNIV
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