Title:
MULTI-CHANNEL PWM WAVEFORM MEASURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/138064
Kind Code:
A2
Abstract:
The present invention relates to a multi-channel PWM waveform measuring device, and more particularly, to a multi-channel PWM waveform measuring device which maximally prevents the loss of an expensive power semiconductor device during the diagnostic process of a complex servo drive and reduces damage to the PCB of the servo drive in order to recover the servo drive safely and quickly. In a multi-channel PWM waveform measuring device for checking the PWM output state of the main control PCB of a servo drive, provided are: a measuring jig outputting a measurement signal to a communication cable through a plurality of probes, which are pre-installed corresponding to each of the measurement points of an inverter and converter for measuring PWM waveforms, wherein the main control PCB of a detachable servo drive, i.e. a checking target, is connected to the base terminal of a transistor equipped in the pre-installed inverter and converter through a connector; a signal processing unit collecting measurement signals through the communication cable and outputting a measurement signal of a probe connected to a switch which is in an on-state through a manipulation button; and a signal outputting unit outputting a PWM waveform on a screen, wherein a measurement signal inputted from the signal processing unit represents a change of an input voltage over time.
More Like This:
Inventors:
LEE SANGYONG (KR)
Application Number:
PCT/KR2012/001978
Publication Date:
October 11, 2012
Filing Date:
March 20, 2012
Export Citation:
Assignee:
LEE SANGYONG (KR)
International Classes:
G01R31/28
Foreign References:
| KR20080072044A | 2008-08-05 | |||
| JP2006214834A | 2006-08-17 | |||
| KR20100095189A | 2010-08-30 | |||
| KR20030069530A | 2003-08-27 |
Attorney, Agent or Firm:
KIM, Jeonghyeon (KR)
김정현 (KR)
김정현 (KR)
Download PDF:
Claims: