METHOD OF CALCULATING CONSTRAINT CURRENT OF DC MOTOR, METHOD OF MANUFACTURING DC MOTOR AND APPARATUS FOR MANUFACTURING DC MOTOR

摘要

PROBLEM TO BE SOLVED: To provide a method of manufacturing a DC motor which can easily obtain characteristics at a low cost, and moreover can easily manufacture the DC motor at a low cost.;SOLUTION: In a rush current measuring process, the DC motor is driven with application of voltage, after assembling of motor components of measure the rush current, when the motor is driven. In a constraint current calculation process, a constraint current I1 is calculated with the rush current and prescribed constants obtained in advance. After the rush current measuring process, in a non-load current measuring process, when rotation is stabilized under the non-load condition, a non-load current I0 is measured. After the rush current measurement process, in a process of measuring the number of revolutions under the non-load condition, the number of revolutions N0 under the non-load condition is measured when the rotation is stabilized under the non-load condition. After the current measurement process and process to measure the number of revolutions under the non-load condition in an induced voltage measuring process, application of voltage is stopped and an induced voltage under this condition is measured. In a characteristic calculation process, a constraint torque T1 is calculated, based on the constraint current I1, a non-load current I0, number of resolutions under the non-load condition N0 and induced voltage is calculated, to obtain the characteristics.;COPYRIGHT: (C)2003,JPO