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금속벨트 CVT의 전달함수 도출과 변속비 LQG/LTR 제어
김종준(J. J. Kim),송한림(H. L. Song),김현수(H. S. Kim) 한국자동차공학회 1997 한국 자동차공학회논문집 Vol.5 No.1
In this paper, a transfer function was obtained for a PWM high speed solenoid valve controlled metal belt CVT system. The transfer function was defined as the ratio of speed ratio to PWM duty ratio and derived in time domain by linear regression analysis from the experimental results. The transfer function obtained showed different dynamic characteristics for the up and down shift. Also, LQG/L TR controller was designed for the CVT system using the transfer function. It is seen from the experimental results that LQG/LTR control showed good performance for the speed ratio tracking and disturbance rejection. The phase difference and relatively slow response are considered due to the inaccuracy of the transfer functions, which resulted from the inherent nonlinearities of the transmission characteristics of the metal belt CVT.
금속벨트 CVT의 전달함수 도출과 변속비 LQG/LTR 제어
김종준(J.J.Kim),송한림(H.L.Song),김현수(H.S.Kim) 한국자동차공학회 1995 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1995 No.11_1
In this paper, a transfer function was obtained for a PWM solenoid controlled metal pushing belt CVT system. The transfer function was defined as the ratio of speed ratio to PWM duty ratio and derived in time domain by linear regression analysis from the experimental results. The transfer function obtained showed different dynamic characteristics for the up and down shift. Also, LQG/LTR controller was designed for the CVT system using the transfer function. It is seen from the experimental results that LQG/LTR control showed good performance for the speed ratio tracking and disturbance rejection.<br/>