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콤바인 HST 전자제어시스템 개발 (I)

Development of a Combine HST Electronic Control System (I) - Indoor Tests for Control Characteristics -

  • 서신원 (충남대학교 농업생명과학대학 생물산업기계전공) ;
  • 허윤근 (충남대학교 농업생명과학대학 생물산업기계전공) ;
  • 이제용 ((주)미도테크 연구소) ;
  • 이창규 ((주)LS엠트론 연구소)
  • Seo, Sin-Won (Dept. of the Bioindustrial Machinery, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Huh, Yun-Kun (Dept. of the Bioindustrial Machinery, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Lee, Je-Yong (Dept. of the Research Institute, Mido Tech Ltd.) ;
  • Lee, Chang-Kyu (Dept. of the Research Institute, LSmtron Co. Ltd.)
  • 투고 : 2010.08.23
  • 심사 : 2010.09.17
  • 발행 : 2010.09.30

초록

Electro-hydraulic transmission (HST) and an electronic control system was designed, and performance of the components were investigated through indoor tests. When input values for HST swash plate control were given at 3 levels (5, 10, 13 degrees) in forward and reverse directions, the errors were less than 0.6 degrees. Response time was in ranges of 0.14 ~ 0.16 s and 0.16 ~ 0.2 s for forward and reverse direction controls while driving, and the values were 0.23 ~ 0.25 s and 0.18 ~ 0.23 s at static condition, respectively. Similar experiments for left and right steering resulted errors less than 0.5 degrees. Resonse time was in ranges of 0.16 ~ 0.22 s and 0.11 ~ 0.23 s for left and right turns while driving, and the values were 0.07 ~ 0.21 s and 0.09 ~ 0.14 s at static condition, respectively. From frequency response experiments, control system appeared to follow sine waves appropriately at frequencies less than 0.8 Hz with gain of 0.11 dB and 0.09 dB for forward and reverse direction controls, respectively, and the gain decreased above the frequency. Phase difference showed a gradual increase and were less than 45 degree up to 0.8 Hz. Similar experiments for left and right streering showed that the control system appeared to follow sine waves appropriately at frequencies less than 0.8 Hz with gain of 0.28 dB and 0.26 dB for left and right steering controls, respectively, and the gain decreased above the frequency. Phase difference showed a gradual increase and were less than 45 degree up to 0.8 Hz, which was the same as for the forward and reverse controls.

키워드

참고문헌

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