Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Pressure Control of Electro-Hydraulic Variable Displacement Pump Using Genetic Algorithms

GA를 이용한 전기유압식 가변펌프의 압력제어

  • 안경관 (울산대학교 기계ㆍ자동차공학부) ;
  • 현장환 (시뮬레이션 테) ;
  • 조용래 (울산대학교 대학원 기계자동차공학) ;
  • 오범승 (울산대학교 대학원 기계자동차공학과)
  • Published : 2004.09.01
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Abstract

This study presents a genetic algorithm-based method fur optimizing control parameters in the pressure control of electro-hydraulic pump with variable displacement. Genetic algorithms are general-purpose optimization methods based on natural evolution and genetics and search the optimal control parameters maximizing a measure that evaluates the performance of a system. Four control gains of the PI-PD cascade controller for an electro-hydraulic pressure control system are optimized using a genetic algorithm in the experiment. Optimized gains are confirmed by inspecting the fitness distribution which represents system performance in gain spaces. It is shown that genetic algorithm is an efficient scheme in optimizing control parameters of the pressure control of electro-hydraulic pump with variable displacement.

Keywords

References

  1. Dreymuller, J., 'Pilot Operated and Directly Actuated Pressure Control with Variable Delivery Axial Piston Pumps,' Proc. of the 4th Fluid Power symposium, 1975
  2. Kim, S. D., Cho, H. S. and Lee, C. O., 'A Parameter Sensitivity Analysis for the Dynamic Model of a Variable Displacement Axial Piston Pump,' Proc. Institution of Mechanical engineers, Vol. 201, No. C3, 1987
  3. Kim, S. D., 'Dynamic Analysis and Suboptimal Control of a Load-sensing Hydraulic Servo System,', KAIST, Ph.D. thesis, 1987
  4. Tsai, S. T., Acker, A. and Lin, S. J., 'Use of Flapper-Nozzle Valve for Axial Piston Pump Control,' SAE Paper No. 911817
  5. Acker, A. and Lin, S. J., Use of Two-Stage Electrohydraulic Controller with an Axial Piston Pump,' SAE Paper No. 891860
  6. Backe, W., 'Electro Hydraulic Pump Control,' JHPS International Symposium on Fluid Power, Tokyo, March, pp. 67-74, 1989
  7. Wright, J., Burton, R. T. and Schoenau, G., 'Design of Microcomputer Control System for a Variable Displacement Hydraulic Pump,' The Journal of Fluid Control, Vol. 21, pp. 116-140, 1988
  8. You, Z., Burton, R. T. and Ukrainetz, P. R., 'Feasibility Study of Sliding Mode Control in the Operation of a Variable Displacement Axial Piston Pump,' JHPS International Symposium on Fluid Power, Tokyo, March, pp. 265-272, 1993
  9. You, Z., Burton, R. T. and Ukrainetz, P. R., 'Sliding Mode Control of a Variable Displacement Axial Piston Pump Using Brushless DC Motor as a Actuator,' ICFP, pp. 290-296, 1993
  10. Zeiger, G. and Akers, A., 'The Application of Linear Optimal Control Technique to Axial Piston Pump Controller Design,' SAE Paper No. 890953
  11. Lee, Y. J., Lee, S. H. and Song, C. S., 'A Study on the characteristic Analysis of the Load-sensitive Hydraulic Pump Control Systems,' J. of the KSPE, Vol. 17, No. 4, pp.148-154, 2000
  12. Sutton, P. and Boyden, S., 'Genetic Algorithms : A General Search Procedure,' American J. of Physics, Vol. 62, No. 6, pp. 549-552, 1994 https://doi.org/10.1119/1.17516
  13. Goldberg, David E., 'Genetic algorithms in search, optimization & machine learning,' Addison-Welsey Publishing Company, 1989