Patent ID: 9608557
Date: 2017-03-28
CPC Classifications: A47B,H02P

Claim:
1. A method for controlling operation of a direct current (DC) electric motor in a height-adjustable furniture arrangement, the DC electric motor being configured to provide a height-adjusting function to adjust a height of at least a portion of the height-adjustable furniture arrangement, the method comprising; providing, by a power supply unit connected to the DC electric motor, an incoming power comprising an incoming current and an incoming voltage connected to a transformation unit; measuring, by a control device, the incoming current and the incoming voltage, the control device including a regulator unit, a transformation unit, a measuring unit, and a second measuring unit; transforming, at the transformation unit, the incoming current and the incoming voltage to a motor supply current and a motor supply voltage to be supplied to the DC electric motor, measuring, at the measuring unit, a load on the DC electric motor, and transforming, by the control device, when the measured load requires a motor supply current higher than the measured incoming current for providing the height-adjusting function, the levels of the motor supply current and the motor supply voltage supplied to the DC electric motor to cause the DC electric motor to adjust the height of the portion of the height-adjustable furniture arrangement such that the motor supply current is higher than the measured incoming current, the motor supply voltage is lower than the measured incoming voltage, and the incoming power is not exceeded, wherein,