A New Method for Maintaining Constant Dither Amplitude in Low FrequencyPWM

Collection with item attached
2017
Item details URL
http://open-repository.kisti.re.kr/cube/handle/open_repository/473785.do
DOI
10.4316/AECE.2017.01013
Title
A New Method for Maintaining Constant Dither Amplitude in Low FrequencyPWM
Description
Research described in this paper was supported by the Korea Institute ofIndustrial Technology (KITECH).
abstract
Various controls for fluid flow and pressure are now required in related industries, and the pulse width modulation (PWM) and dithering techniques have become essential for the proportional control of solenoids. However, there is a fatal drawback when the dither current signals are generated as a by-product of low frequency PWM. That is, the average current and the dither amplitude in low frequency PWM cannot be controlled independently. Therefore, a new method for maintaining constant dither amplitudes is proposed in this paper. Throughout the mathematical analysis, the effect of PWM frequency and duty cycle on the average current and dither amplitude was investigated, and the analysis result was validated by electrical experiments. Based on the mathematical analysis, a new method that properly varies both the duty cycle and the PWM frequency to obtain the desired average current and constant dither amplitude was established and verified. This method requires only the calculations for determining the proper PWM frequency and duty cycle, so it is possible to improve the performance of a proportional solenoid valve without additional devices or cost.
provenance
Made available in Cube on 2018-09-28T10:28:47Z (GMT). No. of bitstreams: 0
language
English
author
Kang, Hoon
Park, Jinyoung
Cho, Jungwoo
Kim, Jonghyoung
Oh, Jooyoung
accessioned
2018-09-28T10:28:47Z
available
2018-09-28T10:28:47Z
issued
2017
citation
ADVANCES IN ELECTRICAL AND COMPUTER ENGINEERING(17): 1
issn
1582-7445
uri
http://open-repository.kisti.re.kr/cube/handle/open_repository/473785.do
Funder
과학기술정보통신부
Funding Program
한국생산기술연구원연구운영비지원
Project ID
1711063138
Jurisdiction
Rep.of Korea
Project Name
2톤급 전동지게차용 EPS 모듈이 적용된 전기식 3-wheel Drive-Train 개발(1/3)
rights
openAccess
subject
pulse width modulation
circuit simulation
driver circuits
solenoids
mathematical analysis
type
article


Files in This Item

There are no attached files.