数控抽油机框架体模态参数识别

Mode parameter identification of framework of digitally controlled oil pump

以数控抽油机框架系统（简称框架体）为试验对象，采用一点、激振多点拾振方式，将得到的模拟量转换成数字量，依据振动模态理论和机械阻抗原理，从实验数据中求出了框架体模态参数，同时也为寻找振源和减振提供了依据．

Taking the framework of a digitally controlled as an experimental object oil pump (so called )' framework body' for short) and adopting single site excitation and multiple-spot pick up of vibration, various analog outputs can be converted to logic one by using afrequency analyzer. The mode parameters of the framework body are obtained from the experimental data by using vibration mode theory and the law of mechanical impedance, providing the basis for finding the vibration origin as well as the damping method.