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

Pulse condition recognition circuit based on resistance variation characteristics

A technology of pulse state and resistance change, used in circuits, electric processing equipment, metal processing equipment, etc., can solve problems such as micro-EDM defects, ensure detection effect and resolution, accurate and real-time detection, and improve stability. and sensitivity effects

Active Publication Date: 2018-08-31
INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the gap average voltage detection method still has defects for micro-EDM.

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
  • Pulse condition recognition circuit based on resistance variation characteristics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The working process of this embodiment is as follows:

[0027] 1. The pulse power supply generates a rectangular pulse. The voltage amplitude between the positive and negative poles will change with the lapping and disconnection of the discharge channel, and the impedance between the two poles will change rapidly.

[0028] a. Before the tiny gap between the two poles is broken down, it is in an open circuit state, the impedance between the two poles is extremely large, no current passes through the diodes D1 and R3, the divided voltage Us of R1 and R2 remains stable, and the filtered voltage UA is in a stable and non-fluctuating state ;

[0029] b. When the two poles break down for discharge and arcing, the impedance decreases sharply, resulting in a sudden change in the voltage division ratio of the Us terminal, which makes the voltage amplitude of the Us terminal drop suddenly, and the voltage of the UA terminal also drops. However, due to the voltage E Continuous ch...

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 pulse condition recognition circuit based on resistance variation characteristics. Compared with an average gap voltage detection circuit, the pulse condition recognition circuit is added with an interelectrode impedance detection unit. The interelectrode impedance detection unit comprises a constant-voltage direct current source DC, a divider current-limiting resistor R1, a response characteristics module for waveform regulation and detection and a diode D1, wherein the response characteristics module for waveform regulation and detection is formed in the way that aresistor R2 and a capacitor C1 are connected in parallel and then connected in series with a resistor R3; the constant-voltage direct current source DC and the divider current-limiting resistor R1 areconnected in series, then connected in parallel with the response characteristics module for waveform regulation and detection, and after that, connected in parallel with the diode D1; and the diodeD1 and the resistor R3 are respectively connected to two ends of the capacitor C1. The pulse condition recognition circuit based on resistance variation characteristics is suitable for detecting a micro electric spark discharge state, and can improve the stability and the sensitivity in detection of the micro electric spark discharge machining state.

Description

technical field [0001] The invention belongs to the technical field of micro electric discharge machining, and in particular relates to a pulse state identification circuit based on resistance change characteristics. Background technique [0002] Micro electric discharge machining has the remarkable characteristics of small single pulse discharge energy, high pulse discharge frequency, small discharge gap, large noise interference, and complex discharge state, which makes the processing process extremely unstable, and the processing discharge state is difficult to accurately detect and control. Low, which greatly limits the development of micro-EDM technology, especially for the processing of difficult-to-machine materials and large quantities of micro-structural parts, the low processing efficiency will directly affect the application of micro-EDM technology, which seriously hinders the development of micro-EDM technology. Improvement of the micro-manufacturing capability o...

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
IPC IPC(8): B23H1/02
CPCB23H1/024
Inventor 张勇斌刘广民荆奇王锋王卿张连新吴祉群雷艳华
Owner INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS
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