通常的曲轴动平衡试验是在专用的“软支承”动平衡机上进行的。这类平衡机设计有平面分离解算网络,利用机械或电气的标准转子进行平面分离及标定,能显示校正面(各个平衡块)上的不平衡量大小与相位。但是,这类平衡机也有缺点,如调整标定费时、精度低、故障率高和不适宜进行初始不平衡量大的曲轴动平衡等。将硬支承动平衡机应用于曲轴试验的困难是校正面与去重面之间的换算关系不够明 The usual crankshaft balancing test is carried out on a dedicated “soft support” balancing machine. This type of balancing machine is designed with a plane separation solution network, the use of mechanical or electrical standard rotor plane separation and calibration, can display the calibration surface (each balance block) unbalance on the size and phase. However, such balancing machines also have disadvantages such as time-consuming calibration, low accuracy, high failure rates and improper cranking of the initial unbalance. The difficulty of applying a hard-supported balancing machine to a crankshaft test is that the conversion between the correction surface and the deweighting surface is not clear enough