Double hydraulic cylinder flow compensation synchronous erecting device and its control method

A technology of flow compensation and dual hydraulic cylinders, which is applied in the direction of fluid pressure actuators, fluid pressure actuator system components, servo motors, etc., can solve the problems of slow response speed and low synchronization accuracy of the hydraulic synchronous deviation correction system, and achieve enhanced safety Performance and reliability, improve control response speed, improve the effect of synchronous control accuracy
CN108180180BInactive Publication Date: 2020-04-03HARBIN UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN UNIV OF SCI & TECH
Publication Date
2020-04-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a double hydraulic cylinder flow compensation synchronous erection device and a control method thereof. The double hydraulic cylinder flow compensation synchronous erection device is mainly composed of hydraulic cylinders, piston rods, an oil pump, servo valves, an oil tank, displacement sensors, controllers, an overflow valve, a computer and the like. The first displacement sensor and the second displacement sensor detect the displacement of the first piston rod and the second piston rod, a detection result is converted through an AD converter, data are transmitted tothe computer, the difference between the displacement of the first displacement sensor and the displacement of the second displacement sensor is calculated by the computer, and the result is sent tothe first controller and the second controller through a DA converter; according to the displacement difference of the first piston rod and the second piston rod, the size of valve elements of the first servo valve and the second servo valve is adjusted many times, so that the flow of the valve elements of the first servo valve and the second servo valve can be changed till the displacement difference of the first piston rod and the second piston rod is zero. The double hydraulic cylinder flow compensation synchronous erection device and the control method thereof solve the problems that a flow dividing synchronous device is poor in eccentric load resisting capacity, low in synchronizing precision and poor in reliability, improve the synchronizing precision and the responding speed, and improve safety and stability.
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Description

[0001] Technical field

[0002] The invention relates to a double hydraulic cylinder flow compensation synchronous erecting device and a control method thereof, belonging to the technical field of hydraulic control. Background technique

[0003] The existing large-scale equipment erection control system has two principle modes: one is to use a single multi-stage oil cylinder for erection. This principle mode has a simple structure, but it is not suitable for the working condition of unbalanced load, and its reliability is poor; The other is to use two multi-stage cylinders for erection, together with a synchronous diverter valve. Although this principle mode realizes the simultaneous erection of two cylinders, its accuracy is low, only about 5%, and the stability is not high, so it is safe Sex is poor. Due to the obvious advantages of the valve-controlled cylinder system, such as good speed, quick response, and high control precision, dual cylinders are commonly used to drive...

Claims

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