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Torque sensor based on magnetoelastic effect

A torque sensor and effect technology, applied in the field of torque sensors based on magnetoelastic effect, can solve the problems of long response time, large changes of the measured axis, and influence on the system, and achieve strong anti-interference ability, simple installation and maintenance, and good durability Effect

Pending Publication Date: 2022-07-05
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its advantages are high precision, low cost, and reliable performance; the disadvantage is that the response time is long, and the changes to the measured axis are large, which affects the system.

Method used

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  • Torque sensor based on magnetoelastic effect
  • Torque sensor based on magnetoelastic effect
  • Torque sensor based on magnetoelastic effect

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Embodiment Construction

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] The relative arrangement of the components and steps, the numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that, for the convenience of description, the dimensions of various parts shown in the accompanying drawings are not drawn in an actual proportional relationship. Techniques, met...

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Abstract

A torque sensor based on a magnetoelastic effect disclosed by the present invention comprises a stepped shaft, the stepped shaft comprises an elastic shaft and a fixed disc, the side surface of the elastic shaft is provided with an amorphous alloy detection sheet, the periphery of the elastic shaft is uniformly distributed with a plurality of coil supports, the coil supports are fixed on the fixed disc, and the coil supports are fixed on the fixed disc. A magnet exciting coil is arranged on the coil bracket; a circuit board is arranged above the coil bracket; according to the invention, the magnitude of the torsional force is detected based on the inverse magnetostrictive effect, and the device has incomparable advantages compared with other measurement methods, is simple in installation and maintenance, strong in anti-interference capability, good in durability, capable of realizing non-contact measurement, easy to develop towards miniaturization, and especially suitable for online monitoring of torque, and in addition, the magnetoelastic non-contact torque measurement is adopted, so that the measurement accuracy is improved. The control error caused by the reduction of the system rigidity can be effectively reduced.

Description

technical field [0001] The invention relates to a torque sensor, in particular to a torque sensor based on a magneto-elastic effect. Background technique [0002] A torque sensor is a device and device that can sense torque and convert it into a usable signal according to a certain law. It is usually composed of sensitive elements and elastic elements. Torque sensors are widely used in the field of robotics. They are generally installed inside each joint of the robot. They can comprehensively sense the magnitude of the torque that the robot bears when it interacts with the external environment, and provide force-sensing information for the compliance control of the robot. [0003] At present, several main methods of torque measurement include strain type, photoelectric type, capacitive type, electromagnetic type and magneto-elastic type. [0004] The torque measurement of the strain gauge sensor is to form a measuring bridge by pasting the strain gauge on the elastic shaft....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/12G01L3/00
CPCG01L1/125G01L3/00
Inventor 张子建杨德龙董洋洋王宁
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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