Abstract: A highly flexible electronic control system which is readily reconfigurable or reprogrammable to suit more than one machine, such as more than one laundry appliance. Control parameters are input to the controller over a communications link, which may be an optical communications link. The controller is automatically adaptable to particular ones of a plurality of different machines, for example laundry appliances in the form of a two-speed washer, a one-speed washer, an electric dryer and a gas dryer. The controller determines the particular appliance by applying signals to particular terminals of a connector connected to a machine to be interrogated. Other terminals are monitored to logically recognize the particular appliance. Thereafter, the control system implements functions appropriate to the particular appliance.

Abstract: A fabric washing machine includes a container to receive fabrics and fluid to wash the fabrics. A switched reluctance motor is operatively connected to oscillate and rotate the container. A control operates the machine by providing commutation signals to the motor to energize the stator phases in a predetermined sequence as corresponding rotor phases approach the stator phase being energized. To stop the machine the control repeatedly senses the instantaneous alignment of the stator and rotor phases and supplies commutation signals to the motor to energize the stator phases in the same sequence but as corresponding rotor phases have become aligned with the stator phase being energized.

Abstract: An appliance electronic control system which tends to maintain a constant total cycle time, and thus an accurate "Time Remaining" display, notwithstanding variations in the actual time required for a water fill operation. The control system includes a count down timer and a time remaining display indicating cycle time remaining based on the state of the count down timer. The count down timer is initialized to a state representing nominal total cycle time, which includes the sum of a nominal fill time for water filling operations, a nominal time duration for each of several pause intervals, and the time durations of operational modes under the direct control of the control system, such as agitate time and spin time. During operation, the count down timer is decremented at regular predetermined intervals. The first time the machine fills, the actual time for the filling operation is measured.

Abstract: A fabric washing machine has a container for fabrics and fluid to wash the fabrics. A switched reluctance motor is connected to the container. The motor is operated at a constant torque and the time needed to accelerate the container and a load of fabrics from one speed to a higher speed is measured. The measurement may be repeated with a different torque input. The inertia of the system, and thus the size of the fabric load, is calculated from the time measurement. The load size information, whether calculated or inputted, is used to calculate the blend of fabrics in the load. Water is added to the container in predetermined increments, and the container is oscillated a predetermined number of strokes and the required torque is measured after each addition of water. The required torque is used to calculate the blend of fabrics as the torque value varies with load size (already known) and the percentage of cotton in the load.

Abstract: An electronic control arrangement for controlling the power applied to an electrical load, in which the electronic control includes in its memory a predetermined power control parameter look-up table associated with each of a plurality of potentially applicable voltage ranges. Each table contains the appropriate control parameters for controlling the load when the associated one of the input voltage ranges is applied to the load. The control, in response to an input signal identifying the voltage to be applied, selects the control parameters from the look-up table associated with the identified voltage. This signal may be generated by voltage sensing circuitry which monitors the supply voltage, or by a manually adjustable circuit which enables presetting for a particular supply voltage.