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Title:
DISPLACEMENT DETECTION DEVICE, DISPLACEMENT CONTROL SYSTEM, AND 3D PRINTING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/220928
Kind Code:
A1
Abstract:
The present application provides a displacement detection device, a displacement control system, and a 3D printing apparatus. A displacement detection element outputs detection information. An acquisition element is connected to the displacement detection element and a drive control element for driving a movement element respectively, obtains a first position value counted by a first count unit according to the detection information, acquires drive information output by the drive control element within an acquisition period of the detection information, and obtains a second position value counted by a second count unit according to the drive information. A data processing element is connected to the acquisition element, and obtains the current position value of the movement element according to the first position value and the second position value. The first count unit corresponds to the detection precision of the displacement detection element, the second count unit corresponds to the positioning precision of the movement element, and the detection precision of the displacement detection element is smaller than the positioning precision of the movement element, thereby implementing high-precision detection with a low-precision displacement detection element, so as to improve detection accuracy.

Inventors:
YU PINGCHU (CN)
Application Number:
PCT/CN2020/083149
Publication Date:
November 05, 2020
Filing Date:
April 03, 2020
Export Citation:
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Assignee:
ZHUHAI SAILNER 3D TECH CO LTD (CN)
International Classes:
G05D3/12; G01B5/004; G01B5/02; G01B7/004; G01B7/02
Foreign References:
CN110308745A2019-10-08
CN107992109A2018-05-04
CN100516339C2009-07-22
CN102087482A2011-06-08
US20130141736A12013-06-06
US20140183346A12014-07-03
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
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