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Double-redundancy six-phase moment motor for precision instrument and device, and control method thereof

A technology of torque motors and precision instruments, applied in the control of dual-redundancy six-phase torque motors, in the field of double-redundancy six-phase torque motors, can solve the problems of rapid heating of the motor stator and failure to work, and achieve small torque fluctuations and easy processing The effect of manufacturing and lowering the operating temperature

Inactive Publication Date: 2014-12-03
NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
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  • Abstract
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  • Application Information

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Problems solved by technology

At the same time, the present invention can solve the unresolved technical problem in the prior art that the heat generated by the ultra-low-speed direct drive motor will cause the stator of the motor to heat up rapidly and even fail to work.

Method used

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  • Double-redundancy six-phase moment motor for precision instrument and device, and control method thereof
  • Double-redundancy six-phase moment motor for precision instrument and device, and control method thereof
  • Double-redundancy six-phase moment motor for precision instrument and device, and control method thereof

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Embodiment 1

[0047] Embodiment 1 is a comprehensive experimental platform for double-redundancy tracking of a 1-meter-class telescope. Its tracking system is composed of an azimuth rotation axis and a height-pitch axis. Through the rotation of the azimuth axis and the height axis, target tracking in the range of ±0~360° is realized . The main technical indicators are: speed range: 0.05″~20° / s; position tracking accuracy: 5″~1″; system acceleration: ≥2° / s2. The experimental platform adopts the double-redundancy multi-phase torque motor invented by this patent Realize the drive of the telescope experiment platform. The azimuth shafting of the telescope dual redundant tracking comprehensive experiment platform supports the whole system and has extremely high motion accuracy and good stability, and is connected with the foundation through the azimuth base 41. The azimuth bearing 34 adopts high-precision The double-row angular contact is used to bear the weight of the entire telescope. When the...

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Abstract

The invention discloses a double-redundancy six-phase moment motor for a precision instrument and device, and a control method thereof. The motor is an AC permanent magnetic synchronous servo motor, is formed by assembling stators and a rotor, and is characterized in that the stator and the rotor employ a double-stator and single-rotor structure. A double-stator structure is as follows: double stators employ a splicing type structure and are provided with two independent stator windings; the two independent stator windings share one permanent magnet; the housing of the motor stators is provided with cooling grooves, the two sides of the housing are provided with sealing grooves, through a cooling system, the operation temperature of the stator can be reduced, and the output power of the motor is improved; and the two independent stator windings are controlled by a control system so as to realize individual operation of one of the stator windings and parallel operation of the two stator windings. According to the invention, through double-redundancy control, when a certain control system fails, the other system can still work normally, such that the system reliability is improved. The motor and the method provided by the invention can also be applied to other high-precision instruments and devices.

Description

technical field [0001] The invention relates to a multi-phase redundant motor, in particular to a double-redundancy six-phase torque motor used in a large ultra-precision instrument and equipment servo system. The invention also relates to a control method of the double-redundancy six-phase torque motor. [0002] The present invention is derived from the Chinese Academy of Sciences Astronomy Project (C-113), the National Fund Project (Project No.: 11273039), and the Jiangsu Province Industry-University-Research Project (Project No.: BY2011167). Background technique [0003] Compared with the traditional three-phase motor, the six-phase motor has the advantages of low voltage output, high power and small torque fluctuation, and is widely used in astronomical observation instruments, large CNC milling machines, ship propellers and other fields. Direct drive technology can save the deceleration device in low-speed and high-torque applications, making the design have the advant...

Claims

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Application Information

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IPC IPC(8): H02K16/04H02K1/20H02K1/27H02K1/16H02P21/00H02P25/24
Inventor 任长志
Owner NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
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