Patent ID: 9207149
Filing Date: 2015-12-08
Classification: G01M

Abstract:
1. A drive-train testing system for evaluating a characteristic of a workpiece by inputting a driving torque, which is generated in accordance with a torque command including an alternating-current component of an excitation frequency, into an input shaft of the workpiece configuring a part of a drive train, the drive-train testing system comprising: a first motor; a second motor, one end side of a drive shaft thereof being connected to a drive shaft of the first motor, and the other end side of the drive shaft thereof being connected to an input shaft of the workpiece; a shaft torque meter for detecting a torque that acts on a shaft between the workpiece and the second motor; and a resonance suppression circuit for dividing the torque command into a first torque command for the first motor and a second torque command for the second motor, based on a detected value of the shaft torque meter, so as to suppress torsion resonance of an axis that connects the first motor, the second motor, and the workpiece.