AC (alternate current) servo motor based on position feedback structure

An AC servo motor and machine tool technology, applied in the direction of a single motor speed/torque control, electronic commutator, etc., can solve the problems of not meeting the positioning accuracy, speeding up the wear of the transmission device, and inaccurate position positioning, and achieving a small tracking error. , Easy to set, improve the effect of position control accuracy

Inactive Publication Date: 2015-07-29
ZHONGZHI NANJING ELECTRIC CO LTD
View PDF2 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The traditional AC servo motor has the problem of unstable speed, which is easy to affect the machining accuracy, and also causes the wear of the transmission device to be accelerated, and the position positioning is not accurate enough to meet the positioning accuracy

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
  • AC (alternate current) servo motor based on position feedback structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Such as figure 1As shown, the crankshaft of the AC servo motor SM based on the position feedback structure of the present invention is directly connected to the lead screw of the machine tool workbench 1, and the rotation of the crankshaft of the AC servo motor SM drives the lead screw of the machine tool workbench 1 to move. This forms the movement of the machine tool table 1; the speed and position detection device A is coaxially connected with the AC servo motor SM, and the speed and position detection device A includes a speed detector and a position detector, wherein the position detector directly detects the AC servo motor SM The angular displacement of the crankshaft rotation; the speed detector adopts a tachogenerator or a pulse encoder or a high-resolution photoelectric encoder; the detection signal of the speed detector is fed back to the speed servo mechanism 2 through the speed feedback device 3; the detection of the position detector The signal is fed back ...

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 an AC servo motor based on a position feedback structure. According to the AC servo motor based on the position feedback structure, a motor shaft is directly connected with the screw of a machine table workbench to drive the screw of the machine tool workbench to move; a speed and position detecting device is coaxially connected with the AC servo motor and composed of a speed detector and a position detector, wherein the position detector can directly detect the angular displacement of rotation of the motor shaft of the AC servo motor; the detecting signals of the speed detector is fed back to a speed servo mechanism through a speed feedback device; the detecting signals of the position detector are fed back to a position adjusting mechanism. The AC servo motor based on the position feedback structure also comprises an error detecting device, which is used for detecting the practical displacement of the machine tool workbench and sending the detecting signals to an error compensating device connected with a memory and a numerical control machine tool; error compensation values are prestored inside the memory; the numerical control machine tool corrects control instructions according to the practical displacement and the error compensation values to reduce actual position errors.

Description

technical field [0001] The invention relates to an AC servo motor based on a position feedback structure and belongs to the field of control and adjustment systems. Background technique [0002] As an automatic control system with sufficient position control accuracy, position tracking accuracy and fast enough tracking speed, the position servo system has been widely used in many high-tech fields, such as laser processing, robots, CNC machine tools, large-scale Integrated circuit manufacturing, office automation equipment, radar and various military weapon tunnel systems and flexible manufacturing systems, etc. The position servo system includes two major components, the mechanical actuator and the electrical automatic control. For example, the mechanical actuator of the feed drive position servo system of a CNC machine tool often includes a worktable or tool holder, ball screw, guide rail and reduction gear, etc., and the electrical automatic control part includes AC or DC...

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): H02P6/06H02P6/16
CPCH02P6/06
Inventor 杨晓英
Owner ZHONGZHI NANJING ELECTRIC CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap