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High-specific-gravity permanent magnet brushless direct-current gyro motor

A permanent magnet brushless DC, gyro motor technology, applied in the direction of electric components, electrical components, electromechanical devices, etc., to achieve the effect of stable speed, small magnetic loss and small torque change

Inactive Publication Date: 2014-03-12
TIANJIN LUHANG MOTOR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problems to be solved by the present invention are: reduce the power consumption of the gyro motor, reduce the noise, extend the life of the long bearing, improve the stability of the rotational speed, and work normally under the environment of -40°C ~ +50°C

Method used

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Embodiment

[0033] We have made two test motors. The performance requirements of this development project for gyro motors are as follows:

[0034] ①The size is controlled at inside the ball

[0035] ②Momentum H>2000g·cm 2 / s

[0036] ③It can work normally under the ambient temperature of -40℃~+55℃

[0037] ④Speed ​​stability over 1×10 -4

[0038] ⑤ Power consumption <2 watts (rated voltage 24V, normal temperature)

[0039] ⑥ The motor runs smoothly and has low noise

[0040] ⑦The service life is not less than 2000 hours

[0041] One uses a tungsten-based high-density alloy as the rotor ring 7, and the other uses stainless steel as the rotor ring 7. The rest of the motor is the same. The measured performance of these two motors is listed in Table 1.

[0042] Table 1 The measured performance of the two motors (normal temperature)

[0043]

[0044] As can be seen from the above table, in order to obtain 2000g·cm 2 / s momentum moment, when the rotor is made of stainless steel,...

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Abstract

The invention provides a high-specific-gravity permanent magnet brushless direct-current gyro motor which comprises a rotor component and a stator component. The stator component comprises a stator coil, a stator magnetic core and a shaft. The stator magnetic core is disposed on the boss in the middle of the shaft. The stator coil is disposed on the excircle of the stator magnetic core. The rotor component comprises a rotor ring, a magnetic steel component and an end cover. The rotor magnetic steel component is disposed outside the stator coil. The rotor ring is disposed on the excircle of the rotor magnetic steel component. Bearing inner rings are sleeved on two sides of the boss of the shaft. A bearing outer ring is disposed on an end cover. The high-specific-gravity permanent magnet brushless direct-current gyro motor has the advantages that the rotor ring is made by tungsten-based high-specific-gravity alloy so as to increase the rotational inertia of a rotor and lower the rotation speed of the motor under the set angular momentum value; soft magnetic ferrite is high in resistivity, low in eddy current loss, and low in magnetic loss; the stator magnetic core without an inserting coil slot is free of slot effect, and the motor is stable in operation and low in noise; the two-phase brushless direct-current motor using counter potential control is low in power consumption, stable in rotation speed, low in noise, long in service life and applicable to high-temperature and low-temperature environments.

Description

technical field [0001] The invention relates to a high specific gravity permanent magnet brushless DC gyro motor. Background technique [0002] The gyro theodolite consists of two parts, the gyroscope and the theodolite. The gyroscope is a north-referring instrument that is not disturbed by the magnetic field. It is an instrument that can accurately measure the position of the true meridian at any point on the ground (except the high latitude regions of the earth's south and north) or where the moving body is located, so it is also called the true meridian instrument. The gyroscope can only measure the local geographic north, and the theodolite is needed to transmit the true north direction of each point. The combination of gyroscope and theodolite can accurately measure the azimuth of each location. [0003] In the military field, the gyro theodolite is used to measure the flight trajectory of artificial satellites and spaceships, to measure the driving direction of vehic...

Claims

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Application Information

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IPC IPC(8): H02K29/00H02K1/17H02K1/18H02K1/27H02K7/08
Inventor 李浒刘海瑞许水珠王鹏
Owner TIANJIN LUHANG MOTOR TECH
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