Title:
HYBRID MAGNETIC SOURCE MAGNETIC LEAD SCREW HAVING HIGH POSITIONING PRECISION, AND MULTI-HARMONIC COLLABORATIVE MODULATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/236870
Kind Code:
A1
Abstract:
A hybrid magnetic source magnetic lead screw having a high positioning precision, and a multi-harmonic collaborative modulation method therefor. The magnetic lead screw comprises a magnetic nut and a magnetic screw rod, which are coaxially arranged. According to the characteristics of a spiral structure, a new effective harmonic order is introduced by means of spatial matching between a permanent magnet and a magnetic modulation module, thus satisfying not only a modulation mechanism in a linear direction, but also satisfying a modulation mechanism in a circumferential direction, such that multi-harmonic collaborative modulation is achieved. An excitation winding is wound inside the magnetic modulation module, so that an air-gap magnetic field of the magnetic lead screw is adjustable, thereby improving the positioning precision. In the hybrid magnetic source magnetic lead screw having a high positioning precision, on the premise of ensuring high reliability and high thrust density, the defects of an existing magnetic lead screw such as single modulation of a magnetic field, large magnetic flux leakage and insufficient positioning precision are overcome.
More Like This:
| WO/2022/126208 | ANGLED MAGNETIC COUPLING |
| WO/2022/013774 | MAGNETIC GEARSHIFT SYSTEM |
| JP3740986 | ACTUATOR OF EDDY CURRENT TYPE DECELERATION DEVICE |
Inventors:
LING ZHIJIAN (CN)
KANG MEI (CN)
ZHAO WENXIANG (CN)
JI JINGHUA (CN)
KANG MEI (CN)
ZHAO WENXIANG (CN)
JI JINGHUA (CN)
Application Number:
PCT/CN2021/095723
Publication Date:
November 17, 2022
Filing Date:
May 25, 2021
Export Citation:
Assignee:
UNIV JIANGSU (CN)
International Classes:
H02K49/10
Foreign References:
| CN107896047A | 2018-04-10 | |||
| CN111509948A | 2020-08-07 | |||
| CN107070031A | 2017-08-18 | |||
| CN110729873A | 2020-01-24 | |||
| US20100207472A1 | 2010-08-19 |
Other References:
LING ZHIJIAN, JI JINGHUA, ZENG TAO, ZHAO WENXIANG: "Design optimization and comparison of linear magnetic actuators under different topologies", CHINESE JOURNAL OF ELECTRICAL ENGINEERING, vol. 6, no. 1, 1 March 2020 (2020-03-01), pages 41 - 51, XP093006127, ISSN: 2096-1529, DOI: 10.23919/CJEE.2020.000003
Attorney, Agent or Firm:
NANJING DOYES INTELLECTUAL PROPERTY CO., LTD. (CN)
Download PDF: