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논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2015.10
- 수록면
- 160 - 166 (7page)
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초록· 키워드
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Recently, the application of water hydraulics has been paid attention because of its inherent merits such as environmental friendliness, clean, high safety against fire hazard and easy availability. However, water hydraulic devices themselves have lower energy efficiency than in oil systems and this prevents from widening its application. The original method for reducing energy consumption and therefore raising the energy efficiency is to make the supply pressure to change depending on the demand. On the other hand, the variable supply pressure affects the control performance besides larger friction force and considerable leakage flow. Thus, the requirement for reducing the effect of the variable parameters in water hydraulic systems becomes very important for highly precise application.
In this paper, the simple adaptive control (SAC) algorithm applied to a water hydraulic servo motor system is introduced for compensating the effects of the fast changing of supply pressure that affects strongly to control response. SAC and conventional PID control performances are compared together in case of using constant supply pressure and variable supply pressure. The simulation results show that for constant supply pressure; the responses in SAC and PID are almost same for steady state error and only better for SAC in transient response. However, for the case of changed supply pressure, SAC response is improved with much smaller error and shorter time for recovering into specified error band in advance than PID response. These results prove that SAC deals with the variable supply pressure well even the changing is very fast. Hence, the robustness of SAC should be applied in the systems with fast changing of supply pressure.
In this paper, the simple adaptive control (SAC) algorithm applied to a water hydraulic servo motor system is introduced for compensating the effects of the fast changing of supply pressure that affects strongly to control response. SAC and conventional PID control performances are compared together in case of using constant supply pressure and variable supply pressure. The simulation results show that for constant supply pressure; the responses in SAC and PID are almost same for steady state error and only better for SAC in transient response. However, for the case of changed supply pressure, SAC response is improved with much smaller error and shorter time for recovering into specified error band in advance than PID response. These results prove that SAC deals with the variable supply pressure well even the changing is very fast. Hence, the robustness of SAC should be applied in the systems with fast changing of supply pressure.
목차
Abstract
1. Introduction
2. System Modelling
3. Linearization of Servo Motor System
4. Controller Design of SAC
5. Simulation Results
6. Conclusions
References
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UCI(KEPA) : I410-ECN-0101-2017-550-000683909