A Servo Torque Motor with Limited Angle

A technology of torque motor and limited rotation angle, applied in electromechanical devices, electrical components, electric components, etc., can solve problems such as torque fluctuations, achieve the effects of reducing volume, avoiding magnetic flux leakage, and eliminating cogging torque fluctuations

Active Publication Date: 2021-02-05
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A Servo Torque Motor with Limited Angle
  • A Servo Torque Motor with Limited Angle
  • A Servo Torque Motor with Limited Angle

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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-rotation-angle torque motor, which includes a stator core, a rotor, a rotation angle detection device, and a structural support component, wherein the stator core is based on the cooperation of the stator teeth and the rotor to form a magnetic field line circuit with low reluctance and uniform distribution, and the rotor is based on the The radially magnetized magnetic steel produces an excitation magnetomotive force of uniform amplitude in the circumferential direction of the air gap, forming a low reluctance magnetic force line circuit and output torque. In the present invention, the shape of the top of the stator tooth in the stator core is set as a crescent shape, and is matched with the tile-shaped elongated magnetic steel with a certain pole arc size and equal thickness along the radial direction of the rotor, so that the magnetic force lines generated by the magnetic steel are uniform. Distributed on the top of the stator teeth and form a low reluctance magnetic field line circuit, which eliminates the partial saturation of the teeth caused by improper tooth shape, and maximizes the cogging-free area of ​​the limited-rotation-angle motor, thereby almost completely eliminating the rotor in the working angle range Rotational cogging torque fluctuations.

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 Patents(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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