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영구자석동기모터의 외란 관측기 기반의 비선형 속도 제어기
길정환,김원희 제어·로봇·시스템학회 2019 제어·로봇·시스템학회 논문지 Vol.25 No.2
In this paper, we propose a disturbance observer (DOB) based nonlinear velocity controller for permanent magnet synchronous motors (PMSMs). The proposed method consists of DOBs and a velocity controller. The DOBs are developed to estimate the disturbances in velocity and current dynamics without the use of the derivative of the measured signals. The observer gains are chosen using frequency analysis. Using Lyapunov theory, the velocity controller is designed for velocity tracking and disturbance compensation. Closed-loop stability is proven using the input to state stability property. The effectiveness of the proposed method is demonstrated by simulations.
지붕 접속방식의 전기버스 접속부 이송형 자동충전 시스템 시나리오 및 통신 시스템에 관한 연구
길정환(Jeonghwan Gil),최소명(Somyoung Choi),이재석(Jaeseok Lee),김황근(Hwanggeun Kim),이찬호(Chanho Lee),김철수(Chulsoo Kim) 한국자동차공학회 2023 한국자동차공학회 학술대회 및 전시회 Vol.2023 No.11
In this paper, we are study on transfer type automatic charging system for electric bus with roof connection systems scenario and communication. Conventional phantograph type charing system was used for single bus charging on bus stop. The conventional expected the designing low battery capacity with the frequently recharging system. However, most bus stay in a bus service office until midnight after bus operation. It has several problem using the transfer type automatic charging system for electric bus with roof connection systems. The scenario are studied for solving the problem of the proposed system.