工程机械的行驶和作业条件均较恶劣,随机振动将加速机械的疲劳损坏,并使乘员的精神和身体疲劳,从而影响行驶速度和作业质量。因此,乘坐性能是工程机械的重要性能指标之一。随机振动不能用一个简单函数来表达其运动规律,并且不可预测,但却有其统计规律。乘坐舒适性要求为乘员提供舒适、愉快、方便 The running conditions and operating conditions of the construction machinery are relatively poor. Random vibration will accelerate the fatigue of the machinery and cause the occupant’s mental and physical fatigue, thus affecting the speed and quality of the work. Therefore, ride performance is one of the important performance indicators of construction machinery. Random vibration can not express its motion law with a simple function, and it is unpredictable, but it has its statistical law. Comfort requirements provide occupants with comfort, enjoyment and convenience