Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Low-speed highly precise control system for magnetic suspending flying wheel electromotor based on n Hall sensors

A Hall sensor and flywheel motor technology, applied in the direction of single motor speed/torque control, electrical components, electromechanical devices, etc., can solve the problems of low speed and low accuracy, and achieve the effect of improving speed measurement accuracy and control accuracy

Inactive Publication Date: 2008-05-28
BEIHANG UNIV
View PDF0 Cites 55 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is: to overcome the deficiency of low-speed and low precision of the magnetic levitation reaction flywheel motor in the prior art, and to provide a low-speed and high-precision control system for the permanent magnet brushless DC motor of the magnetic levitation reaction flywheel

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Low-speed highly precise control system for magnetic suspending flying wheel electromotor based on n Hall sensors
  • Low-speed highly precise control system for magnetic suspending flying wheel electromotor based on n Hall sensors
  • Low-speed highly precise control system for magnetic suspending flying wheel electromotor based on n Hall sensors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] As shown in Figure 1, there are 9 Hall sensors used in the present invention, and the three-phase permanent magnet brushless DC motor adopts a hollow cup-shaped winding stator structure with 8 pairs of poles, no cogging and no iron core, and it is easy to install 9 Hall sensors. sensor. As shown in Figure 5, on the side corresponding to the pair of magnetic poles of the motor stator, n Hall sensors are evenly placed along the electrical angle of 40°, pasted on the motor stator, and aligned with the center line of the slot where the first end of the three-phase winding of the stator is located. , then the generated Hall signal 1 and Hall signal 2 have an electrical angle difference of 40°, as shown in Figure 3.

[0034] As shown in Figure 6, the control system of the present invention consists of FPGA module 7 as control, position detection 6, three-phase bridge power amplifier and drive circuit 4, three-phase permanent magnet brushless DC motor 5 with n Hall sensors , ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a low-speed high-precision control system of a magnetically levitated flywheel motor based on n Hall transducers, which is used in the high-precision stance control executing mechanism of the new-generation high-stability satellite, namely, the drive control of the magnetically levitated reaction flywheel motor. The invention mainly comprises a controller taking the field programmable gate array (FPGA) as a core, a Hall transducer, a three-phase bridge power amplifier, a drive circuit of the power amplifier, a three-phase permanent magnet brushless DC motor, a voltage reducing chopper, an energy dissipation unit, a detecting unit of a winding current, a detecting unit of chopping voltage, and a DC constant power supply. By arranging n Hall transducers evenly on one side of the motor stator and detecting the Hall signals produced by the Hall transducers, precise rotation speed feedback can be obtained after the Hall signals are compensated, and the low-speed high-precision control of the magnetically levitated reaction flywheel used permanent magnet brushless DC motor can be implemented by using the controller taking the FPGA as the core.

Description

technical field [0001] The invention relates to a high-precision control system of a magnetic levitation flywheel permanent magnet brushless DC motor based on n Hall sensors, which is used to realize the high-precision and high-stability attitude control of a new generation of satellites, and is especially suitable for the attitude control of a magnetic levitation reaction flywheel . Background technique [0002] The high-precision and high-stability attitude control technology of the new generation of satellites is one of the key technologies that need a breakthrough. As the core actuator of the high-precision and high-stability attitude control system of the new generation satellite platform, the magnetic levitation reaction flywheel has the advantages of high angular momentum output precision, good control linearity, strong anti-interference ability and fast response speed, and has been recognized internationally. It has been gradually applied, and will become the preferr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H02P6/06H02P6/16H02K29/08H02K11/00H02P6/17
Inventor 房建成朱娜刘刚王志强周新秀
Owner BEIHANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com