|
|
|
Research on Low Speed Performance of ElectroHydraulic Servomotor
Based on Improved Simulated Annealing Genetic Algorithm
|
YUAN Lipenga,b,CUI Shumeia,LU Hongyingb,LI Shangyib
|
(a. School of Electrical Engineering and Automation; b. School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China)
|
|
|
|
Abstract This paper analyzed the flux and pressure continuous characteristic of electrohydraulic servomotor airtight cavity. And an improved genetic algorithm involving the mechanism of simulated annealing was introduced to carry out the structure optimization for improving low speed performance. The formula of pretransitional curve of the stator and its angle range was derived, and the optimum dimension of triangle cushioning groove of the valve plate was also obtained. This optimization method perfectly combines the global optimal characteristic of genetic algorithm and the local optimal specialty of simulated annealing algorithm. The algorithm not only avoids premature convergence, but also makes the neighborfunction structure more reasonable. Applying this method to design the servomotor, the continuous rotary electrohydraulic servomotor can track the low speed ramp signal of 0.001 °/s and the tracking precision can reach the boundary of 0.001 °.
|
|
Received: 16 September 2009
Published: 31 December 2010
|
|
|
|
|
|
| No related articles found! |
|
|
|
|
