Parallel dual asymmetric cylinder cooperative motion position synchronization control device and compensation method
An asymmetric cylinder and coordinated motion technology, which is applied in fluid pressure actuators, fluid pressure actuator system components, servo motors, etc., can solve the problem of low precision and achieve the effect of improving response speed and synchronous control accuracy
Inactive Publication Date: 2019-07-26
HARBIN UNIV OF SCI & TECH
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However, such existing control devices have low precision and often cannot meet the requirements of some higher precision occasions.
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[0019] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. In the interest of clarity and conciseness, not all features of an actual implementation are described in this specification. It should be appreciated, however, that in developing any such actual embodiment, many implementation-specific decisions must be made in order to achieve the developer's specific goals. For example, those constraints associated with the system are met, and these constraints may vary from implementation to implementation. In addition, it should be understood that although development work may be very complex and time-consuming, such development work is merely a routine task for those skilled in the art who have the benefit of this development.
[0020] In addition, it needs to be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the device structure and / or processing steps closely related...
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The invention provides a position synchronous control and compensation method for parallel double-asymmetric cylinder synergy motion. A synchronous control device for the parallel double-asymmetric cylinder synergy motion position comprises a first hydraulic cylinder, a second hydraulic cylinder, a first piston rod, a second piston rod, a first control unit, a second control unit, a first displacement sensor, a second displacement sensor, a first servo valve and a second servo valve; the displacement of the first piston rod is detected by the first displacement sensor, the displacement of thesecond piston rod is detected by the second displacement sensor, the detection result of the first displacement sensor is transmitted to the first control unit, the detection result of the second displacement sensor is transmitted to the second control unit, and the two pipeline flows of the first servo valve and the second servo valve are adjusted according to a half of the difference between thedisplacement of the first piston rod and the displacement of the second piston rod until the difference between the displacement of the first piston rod and the displacement of the second piston rodis zero. According to the technical scheme, parallel double-cylinder synergy position synchronous control can be realized, and compared with the prior art, the method is higher in response speed and higher in precision.
Description
technical field [0001] The invention relates to hydraulic control technology, and mainly relates to a position synchronous control device and compensation method for coordinated movement of parallel double asymmetric cylinders. Background technique [0002] In the current society, such as the automatic tracking target control missile erection device, the center of gravity balance control device of large heavy-duty machinery, and the control device of mechanical processing, etc., all adopt parallel double asymmetric cylinder coordinated movement position synchronous hydraulic control system. However, most of the existing control technologies adopt the method of changing the hardware technology to realize the adjustment and control of the parallel double-cylinder synchronous hydraulic system. The corresponding speed is slow, the adjustment error is large, and the synchronization of the hydraulic cylinders is very serious. For example, when the pistons of two cylinders act on a...
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IPC IPC(8): F15B11/22F15B13/08F15B21/02
CPCF15B11/22F15B13/08F15B21/02
Inventor 李建英王云周董法堂孙宵
Owner HARBIN UNIV OF SCI & TECH