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Variable-rigidity hydraulic driving mechanism based on giant magnetostrictive material and variable-rigidity control method thereof

A technology of giant magnetostriction and driving mechanism, which is applied in the direction of piezoelectric effect/electrostriction or magnetostriction motor, generator/motor, fluid pressure actuator, etc., which can solve the problems of frequency response transmission efficiency, etc. Achieve the effects of high transmission efficiency, high energy density and high positioning accuracy

Inactive Publication Date: 2018-06-15
WENZHOU UNIVERSITY
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  • Abstract
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  • Application Information

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Problems solved by technology

The drive mechanism adopts a variable stiffness design to build a high-efficiency hydraulic drive mechanism with self-adaptive matching of load stiffness, which solves the problems of frequency response and transmission efficiency of traditional hydraulic drive mechanisms as a whole

Method used

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  • Variable-rigidity hydraulic driving mechanism based on giant magnetostrictive material and variable-rigidity control method thereof
  • Variable-rigidity hydraulic driving mechanism based on giant magnetostrictive material and variable-rigidity control method thereof
  • Variable-rigidity hydraulic driving mechanism based on giant magnetostrictive material and variable-rigidity control method thereof

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0032] The terms of direction and position mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom" ", "side", etc., are only referring to the direction or position of the drawings. Therefore, the terms used in direction and position are used to explain and understand the present invention, but not to limit the protection scope of the present invention.

[0033] Such as image 3 The intelligent variable stiffness hydraulic drive mechanism provided by the present invention is a high-efficiency hydraulic drive mechanism with self-adaptive stiffness matching. The shell of the mechanism is equipped with a GMM rod 1 and a GMM rod drive control device (electromagnetic coil 4 and DC bias Set coil 2...

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Abstract

The invention discloses a variable-rigidity hydraulic driving mechanism based on a giant magnetostrictive material and a variable-rigidity control method thereof. The mechanism comprises a shell, a GMM rod arranged in the shell, a GMM rod driving control device, a hydraulic device, and a load displacement and stress feedback device; the GMM rod driving control device comprises an electromagnetic coil and a direct-current bias coil; and the load displacement and stress feedback device comprises a displacement sensor and a force sensor. The mechanism further comprises a variable-rigidity controller; the variable-rigidity controller receives sensing signals of the displacement sensor and the force sensor, and calculates the rigidity of a mechanical load; and the variable-rigidity controller adjusts input voltage of the direct-current bias coil according to the rigidity of the load, so that the driving rigidity of the GMM rod output to the mechanical load through the hydraulic device is matched with the rigidity returned by the mechanical load. The mechanism has the advantage of solving the problems of frequency response and transmission efficiency in a traditional hydraulic driving mechanism.

Description

technical field [0001] The invention belongs to the field of hydraulic drive control, and specifically refers to a variable stiffness hydraulic drive mechanism based on giant magnetostrictive materials. Background technique [0002] Hydraulic drive is a power transmission method that uses oil as the medium to transmit mechanical motion. It has the characteristics of large transmission power, low speed, stability, and flexible layout. It is widely used in equipment manufacturing, automobile industry, aerospace, national defense and other fields. However, due to the complex energy transfer process, large energy loss and other factors, low transmission efficiency has always been a fundamental problem restricting its application. In addition, due to the poor starting performance and low frequency response of the oil medium, the overall response speed of the traditional hydraulic drive mechanism is slow and the working bandwidth is low. How to improve the transmission efficiency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/14F15B15/20F15B19/00F15B21/00H02N2/02H02N2/06
CPCF15B15/1404F15B15/1423F15B15/20F15B19/00F15B21/001H02N2/02H02N2/06
Inventor 舒亮杨家斌李波杨艳芳陶孟仑
Owner WENZHOU UNIVERSITY
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