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

Position and speed measuring device based on inductosyn or rotary transformer

A resolver and inductive synchronizer technology, applied in measuring devices, speed/acceleration/shock measurements, devices using electric/magnetic methods, etc., can solve problems such as signal frequency changes

Inactive Publication Date: 2011-09-14
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is: because the mechanical angle of motion itself is also a time variable, it will cause the signal frequency to change when it rotates, as shown in (2),

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
  • Position and speed measuring device based on inductosyn or rotary transformer
  • Position and speed measuring device based on inductosyn or rotary transformer
  • Position and speed measuring device based on inductosyn or rotary transformer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0088] The invention includes an excitation circuit, an induction synchronizer or a rotary transformer, a signal processing circuit, and a central processing unit. The excitation signal is generated by the excitation circuit and power is amplified. After the power signal passes through the induction synchronizer or the rotary transformer, it is filtered by the signal processing circuit, After amplification, phase shifting and shaping, it is sent to the central processing unit, and the processing steps of the program in the central processing unit are:

[0089] 1) Identify the phase information of the signal;

[0090] 2) Determine whether phase correction is necessary. If the system also requires position during dynamic measurement, it is necessary to correct the phase first. The correction formula is derived from equations (5), (10), and (11):

[0091] θ t ′ = θ t ( ...

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 discloses a position and speed measuring device based on an inductosyn or a rotary transformer. The device adopts a phase discrimination type processing method and comprises an exciting circuit, an inductosyn or a rotary transformer, a signal processing circuit and a central processing unit. An exciting signal is generated by the exciting circuit and subject to power amplification, a power signal passes through the inductosyn or the rotary transformer, the signal processing circuit carries out filtering, amplification, phase shift and reshaping on the power signal, and then the processed signal is sent to the central processing unit. The central processing unit obtains position information through the phase information of a signal, obtains speed information through a position information difference, obtains acceleration information through a speed information difference, and carries out dynamic error correction on phase or speed according to speed and acceleration information. The invention is simple to realize, has low cost and high accuracy, is suitable for both a high-speed operation condition and a low-speed operation condition, and can be applied to the fields of aerospace, military, industry and the like to realize dynamic position and speed measurement.

Description

technical field [0001] The present invention relates to the measurement technology of speed and position, more specifically, the present invention relates to a position and speed measurement device based on induction synchronizer or resolver. Background technique [0002] Inductive synchros and resolvers are both sensors that use electromagnetic principles to convert linear displacement or angular displacement into electrical signals. With a driving circuit, position information can be extracted through the amplitude or phase of the electrical signal. The two sensors have the same working principle. Since the working principle of the inductive synchro and the resolver is designed based on static conditions, no matter whether the measuring device is manufactured according to the amplitude detection method or the phase detection method, there will be dynamic errors in the process of moving or rotating, and even cause Calculation error. [0003] Among them, the method of phase...

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 Patents(China)
IPC IPC(8): G01P13/04G01P3/42
Inventor 张育王跃明刘银年王建宇王晟伟庄晓琼
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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