Unlock instant, AI-driven research and patent intelligence for your innovation.

Sensing winding configuration for inductive position encoder

An encoder and sensing element technology, applied in the field of inductive position encoders, which can solve problems such as limitations

Pending Publication Date: 2022-07-19
MITUTOYO CORP
View PDF16 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such systems may be limited in their ability to provide certain combinations of user-desired features, such as compact size, high resolution, accuracy, low cost, robustness to contamination, robustness to misalignment, etc. combination

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
  • Sensing winding configuration for inductive position encoder
  • Sensing winding configuration for inductive position encoder
  • Sensing winding configuration for inductive position encoder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] figure 1 An exploded isometric view of the hand tool caliper 100 including the scale member 172 and the slider assembly 120 is shown. The scale member 172 may include a spar having a generally rectangular cross-section that includes the scale 170 in a groove therein. Slider assembly 120 may include base 140, electronics assembly 160, and cover 150, described in more detail below. Electronic assembly 160 may include detector portion 167 and signal processing arrangement 166 disposed on substrate 162 . A resilient seal (not shown) may be compressed between the cover 150 and the substrate 162 to exclude contamination from circuits and connections. Scale 170, detector portion 167, and signal processing arrangement 166 work together to provide an inductive electronic position encoder that can be used to measure between two elements (eg, between scale member 172 and slider assembly 120). ) relative position along the measurement axis direction MA.

[0056] In various imp...

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

An inductive position encoder includes a scale, a detector, and a signal processor. The scale comprises a periodic pattern of signal modulation elements (SME) having a spatial wavelength W1 arranged along a measurement axis (MA). The detector includes a sensing element and a field generating coil that generates a varying magnetic flux. The sensing element includes a conductive loop that provides a detector signal in response to a local impact on the magnetic flux provided by an adjacent SME. The conductive loops have an average MA size that spatially filters third spatial harmonic signal components and is positioned along MA according to an in-loop shift relationship in which a first and a second equal number of positive and negative polarity loops are shifted in opposite directions by W1 / 4K (K = 3, 5, 7, 9). Third and K spatial harmonic components in the detector signal are both reduced, while using a novel "layout-friendly" loop arrangement to address long-standing adverse layout issues.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application is a continuation-in-part of US Patent Application Serial No. 17 / 139,596, filed December 31, 2020, entitled "Sense Winding Configuration for Inductive Position Encoders," the disclosure of which is incorporated herein by reference in its entirety. technical field [0003] The present disclosure relates to measuring instruments, and more particularly, to inductive position encoders that can be used in precision measuring instruments. Background technique [0004] Various encoder configurations may include various types of optical, capacitive, magnetic, inductive, motion and or position transducers. These transducers can measure movement between the readhead and scale using various geometrical configurations of transmitters and receivers in the readhead. [0005] US Patent Nos. 6,011,389 ('389 patent), 7,239,130 ​​('130 patent) and 6,124,708 ('708 patent) describe induced current position transducers use...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01B3/20
CPCG01B3/20G01B3/205G01D5/2053
Inventor T.S.库克
Owner MITUTOYO CORP