Influence of controllable parameters on load sharing behavior of torque coupling gear set

Abstract

The multi-motor torque coupling system couples the power of multiple motors by using torque coupling gear sets. The torque coupling gear set is a fixed-axis gear train consisting of multiple input pinions and one output gear. The load carrying capacity and service life of the gear set is affected by the load sharing behavior. A dynamic model of the multi-motor torque coupling system is established. Under the constant load, step load, and variable speed conditions, the influence of the pinion speed synchronization error and drive torque synchronization error on the load sharing behavior of the torque coupling gear set is studied. The results indicate that under these three conditions, the load sharing behavior gets worse with the increase of the pinion speed synchronization error or drive torque synchronization error; the pinion speed synchronization error has a more significant effect on the load sharing behavior. The two synchronization errors can be reduced by controlling multiple inputs of the gear set, and thus, the load sharing behavior can be improved.