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The unbalancing vibration monitoring and control of rotating machinery is an important engineering problem. In order to correct the unbalance of rotor system online, an active dynamic balancing head is designed based on the ratchet-pawl mechanis m and pneumat ic technology. The inner mass distribution state of balancing head can be changed to correct the unbalance when the rotor system is working in unbalancing condition. The mechanical p rinciple and pneumatic control system of the balancing head are introduced in th e paper. Based on a double-face online dynamic balancing experiment system, the balancing effect of the balancing head has been proved by many experiments. In order to improve the dynamic balancing accuracy of the balancing head in the pract ical application, the possible in fluencing factors of dynamic balancing accuracy are analyzed in the paper.

Design of an active dynamic balancing head for rotor and its balancing error analysis