Method and device for synchronizing crystallizer vibration hydraulic cylinders

A crystallizer vibration and hydraulic cylinder technology, applied in fluid pressure actuating devices, servo motors, mechanical equipment, etc., can solve the problems of slow dynamic response and poor synchronization accuracy, and achieve the goal of overcoming poor synchronization accuracy, safe operation, and synchronization accuracy. high effect

Active Publication Date: 2012-07-18
南通津达液压有限公司
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Problems solved by technology

For this reason, it is not only necessary to carry out precise closed-loop control on each hydraulic cylinder, but also to carry out synchronous control on the movement of the two hydraulic cylinders. The commonly used master-slave control scheme has disadvantages such as poor synchronization accuracy and slow dynamic response.

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  • Method and device for synchronizing crystallizer vibration hydraulic cylinders
  • Method and device for synchronizing crystallizer vibration hydraulic cylinders
  • Method and device for synchronizing crystallizer vibration hydraulic cylinders

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Embodiment Construction

[0015] The technical scheme that the present invention solves its technical problem adopts is:

[0016] The present invention is different from the traditional master-slave control method, that is, the master-slave method that only sends control signals to the master cylinder, and the slave cylinder takes the position of the master cylinder as the action target. The synchronous movement of the two hydraulic cylinders is realized by continuously adjusting the position setting value of each hydraulic cylinder at the same time regardless of the master and slave. The main steps are:

[0017] 1. Calculate the amplitude setting value of the hydraulic cylinder according to the reference amplitude and the actual amplitude of the two hydraulic cylinders;

[0018] 2. Calculate the position setting value of the hydraulic cylinder according to the amplitude setting value calculated in step 1 and the actual positions of the two hydraulic cylinders;

[0019] 3. Measure the actual position ...

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Abstract

The invention discloses a method and a device for synchronizing crystallizer vibration hydraulic cylinders. The method comprises the following steps: calculating the amplitude setting values of the hydraulic cylinders according to reference amplitudes and actual amplitudes of two hydraulic cylinders; in a set vibration period, reducing the setting value of the hydraulic cylinder with high actual amplitude or increasing the setting value of the hydraulic cylinder with low actual amplitude, dynamically and periodically adjusting the amplitude error of two hydraulic cylinders so that the amplitudes of the two hydraulic cylinders are the same; calculating position setting values of two hydraulic cylinders according to the amplitude setting values and actual positions of two hydraulic cylinders; and measuring actual positions and actual amplitude values of the two hydraulic cylinders and entering the next circulating period. The positional deviation of the two hydraulic cylinders, caused by the difference of oil paths, hydraulic cylinders, servo valves and the loads is greatly reduced, so as to avoid the horizontal inclination of the crystallizer caused by the unbalance of the two cylinders in the vibration process. The method and the device provided by the invention can guarantee the whole crystallizer vibration device to be operated stably and safely.

Description

technical field [0001] The invention relates to a control method for synchronous position of hydraulic cylinders, in particular to the synchronous control of two hydraulic cylinders on a hydraulic vibration device of a continuous casting machine crystallizer in the metallurgical industry. Background technique [0002] The hydraulic part of the crystallizer hydraulic vibration device is mainly composed of two symmetrical and interchangeable hydraulic cylinders on the left and right. When the two hydraulic cylinders operate, due to the differences in the oil circuit, hydraulic cylinder, servo valve and load, it is bound to cause two The position error of the two hydraulic cylinders, that is, asynchronous phenomenon, will cause the crystallizer to tilt horizontally due to the unbalance of the two hydraulic cylinders. For this reason, it is not only necessary to perform precise closed-loop control on each hydraulic cylinder, but also to carry out synchronous control on the movem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/22
Inventor 蔡炜
Owner 南通津达液压有限公司
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