http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Research on Energy Regeneration of a Hydraulic Excavator Boom System
Y. X. Yu(어영소),E. J. Jeong(정은진),K. K. Ahn(안경관) 유공압건설기계학회 2018 유공압건설기계학회 학술대회논문집 Vol.2018 No.6
Energy saving of hydraulic excavator is very important. Regeneration of potential energy is an effective solution to save energy in hydraulic excavator. This paper proposes a new hydraulic circuit for the boom system of a hydraulic excavator. The hydraulic motor and generator are used in this system for energy regeneration. To decrease energy consumption, a proportional flow control valve is used in the energy regeneration part. The control strategy is proposed to improve the energy saving efficiency and control performance of the system. Finally, a test bench was built and tested. The system was able to regenerate energy at a wide range of velocities and the performance of system was improved.
Research on Energy Saving for Hydraulic Excavator Swing System
Y. X. Yu(어영소),K. K. Ahn(안경관) 유공압건설기계학회 2019 유공압건설기계학회 학술대회논문집 Vol.2019 No.11
A new energy saving swing system is proposed in this paper. The hydraulic accumulator is used in the system as the energy storage unit. The kinetic energy of the swing part can be regenerated and stored in the hydraulic accumulator. The stored energy can be reused in the next cycle. Finally, the total energy consumption is reduced. The experiment result shows that the energy saving efficiency is 9%.
가변 유압모터를 이용한 전동지게차 리프트회생 효율에 관한 연구
박용수,어영소,윤진수,도 찌 끄엉,한성민,신정우,유충목,안경관 사단법인 유공압건설기계학회 2020 드라이브·컨트롤 Vol.17 No.3
In modern society, the energy-saving problem of industrial vehicles is economically and environmentally critical. Energy savings using the potential energy of forklifts are one of the viable solutions to resolving this problem. The basic concept of this study is to operate the hydraulic motor and recharge the battery using the flow rate from the cylinder when loading heavy objects and lowering the fork. To save energy, the torque and rotational speed of the generator should be optimized according to the load and descent speed to increase efficiency. To this end, we propose a system that optimizes energy saving efficiency by controlling the swashplate angle of the variable hydraulic motor through the GA(Genetic-Algorithm). The results were verified by building and comparing fixed motor models and variable motor models using the AMEsim. The results of the study show that the proposed optimized swashplate angle increases the energy saving efficiency by approximately 6%-8%, depending on the working conditions.
가변 유압모터를 이용한 전동지게차의 에너지회생 알고리즘 개발
박용수(Y. S. Park),어영소(Y. X. Yu),정은진(E. J. Jeong),윤진수(J. S. Youn),도찌끄엉(D. T. Cuong),한성민(S. M. Han),신정우(J. W. Shin),유충목(C. M. Yu),안경관(K. K. Ahn) 유공압건설기계학회 2019 유공압건설기계학회 학술대회논문집 Vol.2019 No.11
In modern society, energy saving issues of industrial vehicles are very important for both economically and environmentally. Energy savings using the potential energy of forklifts must be one of the very good solutions. The basic concept is to run the generator using the flow rate discharged from the cylinder when the fork down while carrying a heavy object, and recharge the battery. This study aims to control the flow rate through the use of variable motor to achieve higher energy savings. Using AMEsim, compare the model with the fixed motor and the model with the variable motor and analyze it through the efficiency map to suggest a strategy with better energy efficiency.