Laundry washing or drying machine control

摘要

To control the operation of a laundry washing machine or dryer, according to the load, the charged drum (1) is rotated initially for the motor (4) torque to maintain a constant rotary speed. On acceleration, the motor (4) torque required is registered to spin the charged drum (1). The control electronics (5) gives the quotient of the difference value of the two torques and the angular acceleration of the drum (1), for a quotient which is proportional to the inertia of the drum (1), and increases proportionally to the laundry charge. A setting value for the control is derived from the quotients.