Based on a mathematical model of the hydraulic control system of an automatic transmission created earlier, the clutch pressure during gear shifting was simulated in MATLAB/Simulink software. The clutch pressure was also measured from an automatic transmission mounted on a test rig. After comparison between simulated and measured results, the differences in several places were analyzed. Then, a first order transfer function representing pressure transducer was added in the simulation program and better match between the simulated and measured pressures was achieved.
The 8th International Symposium on Advancecd Vehicle Control (AVEC'06), 20-24 August, 2006, Taipei, Taiwan