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Servo limited angle torque motor

A technology of torque motor and limited rotation angle, which is applied in the direction of electromechanical devices, electrical components, electric components, etc., can solve problems such as torque fluctuations, achieve the effects of reducing volume, eliminating partial saturation of teeth, and improving control accuracy

Active Publication Date: 2019-12-17
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects of the prior art, the purpose of the present invention is to propose a servo limited angle torque motor, which aims to solve the problem of large torque fluctuations caused by the use of a stator core with a small tooth structure in the prior art

Method used

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Embodiment Construction

[0030] 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 and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] In order to achieve the above object, the present invention provides a servo limited angle torque motor, its axial cross-sectional view and two-dimensional electromagnetic structure diagram are as follows figure 1 and figure 2 As shown, it includes an electromagnetic structure stator core 1, a rotor 2, an armature set 3, a rotation angle detection device 4 and structural support parts 5-7;

[0032] Among them, the structural supporting parts include the casing 5, the end cover 6 and the bearing 7. The stator core 1 is set inside the casing 5, and the inner side of the stator core 1 is prov...

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Abstract

The invention discloses a servo limited angle torque motor, which comprises a stator core, a rotor, a rotation angle detection device and a structural support component, wherein the stator core is matched with the rotor based on stator teeth to generate a uniformly-distributed magnetic force line loop with low magnetic resistance; and the rotor generates excitation magnetomotive force with uniformamplitude in the air gap circumferential direction based on radially-magnetized magnetic steel to form a magnetic force line loop with low magnetic resistance and output torque. According to the invention, the tops of the stator teeth in the stator core are set to be crescent-shaped, and are matched with the tile-shaped long-strip-shaped magnetic steel having a certain pole arc size and equal inthickness direction of the rotor, so that the magnetic force lines generated by the magnetic steel are uniformly distributed at the tops of the stator teeth and form the low-magnetic-resistance magnetic force line loop, local saturation of the teeth due to improper shapes of the teeth is eliminated, a cogging-free area of the limited angle motor is maximized, and cogging torque fluctuation of therotor rotating in a working angle range is almost completely eliminated.

Description

technical field [0001] The invention belongs to the field of motors, and more specifically relates to a servo limited-angle torque motor. Background technique [0002] The limited rotation angle torque motor is a special motor that can rotate within a certain rotation angle range and has a certain torque output. This type of motor can be directly used as the drive element of the servo control system. It has the advantages of simple structure, reliability, easy control, and good dynamic response. advantage. However, in some applications, such as hydraulic valves, a certain torque is required during the opening of the oil valve, and the flow of hydraulic oil needs to be controlled by the opening of the oil valve. In addition, the oil generated during the opening of the oil valve The resistance is inversely proportional to the opening angle of the oil valve. In the whole process, the motor has both output torque requirements and should also have the characteristics of a servo ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27H02K1/28H02K11/21H02K1/16H02K26/00
CPCH02K1/165H02K1/2766H02K1/28H02K26/00H02K11/21
Inventor 周游李大伟曲荣海黄礼浩
Owner HUAZHONG UNIV OF SCI & TECH
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