핫가스 바이패스방식에 의한 공작기계용 오일쿨러의 정밀 온도제어 = Precise Temperature Control of Oil Cooler with Hot-gas Bypass for Machine Tool

다국어 초록 (Multilingual Abstract)

Recently, technical trend in machine tools is focused on enhancing of speed and accuracy. The high speed usually causes thermal displacement and structural deformation of objects of the machine tool. To minimize thermal effect, machine tools adopt oil coolers with precise temperature control function. This study aims at precise control of oil outlet temperature in the oil coolers with hot-gas bypass based on PI control logic. The control system was designed for obtaining steady state error within ±0.2°C even though abrupt disturbances are added. We showed that the gain of PI could be easily determined by using gain-tuning method without any numerical model. Through some experiments, excellent control performance was established by a simple PI controller.

목차 (Table of Contents)

• ABSTRACT
• 1. 서론
• 2. 오일쿨러의 핫가스 바이패스 제어
• 3. 실험방법
• 4. 실험결과 및 고찰
• 5. 결론
• 후기
• 참고문헌