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汽车多轴悬架系统的参数优化设计是一个动态优化问题．建立某六轴汽车起重机油气悬架系统的优化模型，应用改进的广义简约梯度法（ＧＲＧＣ）进行优化计算，参数优化的结果表明该车的行驶平顺性能有明显的提高．
The parameter optimization design of automobile multi-axle suspension system is a dynamic optimization problem. The optimization model of a six-axle truck crane hydro-pneumatic suspension system is established. The optimized generalized reduced gradient method (GRGC) is used to optimize the model. The result of parameter optimization shows that the ride comfort performance of the truck is obviously improved.