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Valveless hydraulic servo system and control method thereof

A technology of hydraulic servo system and control method, applied in servo motors, fluid pressure actuating devices, mechanical equipment, etc., can solve the problems of affecting service life, low controllability, energy waste, etc., and achieve extended service life and system control. Flexibility and the effect of improving utilization

Active Publication Date: 2014-05-14
NANTONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a valveless hydraulic servo system and its control method, which are used to solve the problems of energy waste, low efficiency, low controllability, and long-term operation of hydraulic pumps and motors affecting service life in the prior art.

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  • Valveless hydraulic servo system and control method thereof
  • Valveless hydraulic servo system and control method thereof
  • Valveless hydraulic servo system and control method thereof

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Embodiment Construction

[0021] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0022] Please refer to attached picture. It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be change...

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Abstract

The invention provides a valveless hydraulic servo system and a control method of the valveless hydraulic servo system. The valveless hydraulic servo system comprises an alternating current servo motor, a two-way variable pump, a hydraulic cylinder, pressure sensors, a displacement sensor, a speed sensor and a controller. The controller outputs a control instruction to instruct the alternating current servo motor to adjust rotation speed and / or the two-way variable pump to adjust the discharge capacity according to pressure values detected by the first pressure sensor and the second pressure sensor, a displacement value detected by the displacement sensor and a speed value detected by the speed sensor. Compared with the prior art, the rotation speed of the alternating current servo motor is variable, the discharge capacity of the hydraulic pump is variable, and the whole system is more flexible in control, suitable for kinds of conditions, high in efficiency and meanwhile capable of prolonging service life of the alternating current servo motor and hydraulic elements and improving the utilization rate of resources.

Description

technical field [0001] The invention relates to the field of hydraulic transmission control, in particular to a valveless hydraulic servo system and a control method thereof. Background technique [0002] In the industrial field, hydraulic transmission control technology is widely used. In recent years, the combination of hydraulic technology and microelectronic technology has led to the rapid development of electro-hydraulic servo technology. The electro-hydraulic servo valve control system is a feedback control system composed of an electric signal processing device and a hydraulic power mechanism. It has the advantages of being flexible and easy to realize the feedback of various parameters. Therefore, it is most suitable for occasions where the load quality is large and the response speed is required to be fast. Its application has been widely used in various fields of the national economy, such as the control of aircraft and ship steering gear, the control of radar an...

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Application Information

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IPC IPC(8): F15B11/08
Inventor 吴国庆曹阳吴树谦茅靖峰周井玲朱维南张旭东邱锴文
Owner NANTONG UNIVERSITY
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