http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
서문준,김규식,김재문,원충연 성균관대학교 1997 학술회의지원논문목록집 Vol.1997 No.-
In this paper, we attempt to control the nonlinear power control system for resistance spot welders to be a fully linearized system by applying the recently developed nonlinear feedback linearization techniques based on differential geometry theories. The controller in this paper is computationally simple. In additionm the easy gain tuning as well as the high dunamic performance of resistance spot welding systems can be obtained. To illumunate the performance of our controller further we present some simulation results.
김규식,김영대,서문준 서울시립대학교 산업기술연구소 1996 산업기술연구소논문집 Vol.4 No.-
A good elevator is characterized by a high availability, a most comfortable ride, and an economy of operation. The acceleration and braking should be acceptable and stops should be made precisely. This requires the use of adequate drive control systems. In this paper, we attempt to control the drive system with high dynamic performance via recently developed feedback linearization techniques. In addition, a decoupling vector controller is also presented to improve the dynamic performance of induction motors. It is most desirable to decouple rotor speed (or motor torque) and rotor flux linearly for maximum torque per ampere of stator current and high dynamic performance. By applying nonlinear feedback linearization technique based on differential geometry theory to induction motors, it is shown that induction motor system can be linearized and the complete decoupling can be obtained simultaneously. To demonstrate the practical significance of our results, we present some experimental results as well as mathematical analysis.