《Table 5 Improvements of performance indexes on suspension system》

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《Improved ON-OFF Semi-active Control Algorithm and Its Performance Simulation Analysis》

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The comparisons on SM A and DTD in time domain among PASSIVE，ON-OFF，and the best ION-OFF（α=0.6）suspension system are show n in Fig.6，and the improvements of ON-OFF and ION-OFF in comparison of PASSIVE on riding comfort，handling stability，and comprehensive performance are arranged in Table 5.The data in Table 5 manifest that（1）as show n in Fig.3，w hen the riding comfort meets its best value（α=0.6），the improvement on the riding comfort of ION-OFF suspension system in comparison of that of PASSIVE suspension system is 21.372%，w hich is better than the improvement w ith ON-OFF suspension system，w hile the handling stability of ION-OFF suspension system is deteriorated 43.416%than PASSIVE suspension；（2）in Fig.4，w hen the handling stability reaches its best value（α=1），the improvement on the handling stability of ION-OFF suspension system in comparison of that of PASSIVE suspension system is 3.915%，w hich is better than the improvement w ith ON-OFF suspension system，w hile the riding comfort of ION-OFF suspension system is deteriorated 17.893%than PASSIVE suspension；（3）in Fig.5，w hen the comprehensive performance attains its best value（α=0.6），the improvement on the comprehensive performance of ION-OFF suspension system in comparison of that of PASSIVE suspension system is 5.1%，w hich is better than the improvement w ith ON-OFF suspension system；（4）because the riding comfort has been taken as the major estimate criterion（considering the setting of adjustment coefficients of estimate criteria），the comprehensive performance could still be improved visibly w hile the degree of the handling stability deteriorates is larger than the degree of the riding comfort improves.