Abstract: A method for assembling a washing machine is provided. The method includes providing a mode shifter including a solenoid, coupling a basket and an agitator to the mode shifter, and coupling a motor to the mode shifter. The solenoid selectively allows the motor to rotate at least one of the basket and the agitator. The method also includes affixing a motor controller to the motor, and electrically coupling the motor controller to each of the mode shifter and the motor. The motor controller is in operational control communication with the mode shifter and the motor.

Abstract: An energy saving method of operating a washing machine such that the amount of water added to the washer basket is proportionate to the weight of the articles to be washed includes the steps of determining a normalized inertia of the washer basket loaded with articles to be cleaned; determining an estimated weight of the load of articles to be washed based upon the normalized inertia value; and controlling a washer water supply system to add a load-specific volume of water to the washer basket, the magnitude of the load-specific volume of water corresponding to the estimated weight of the articles to be washed. An energy efficient washing machine in accordance with this invention includes an induction motor coupled to the washer basket, a washer water supply system coupled to the washer basket, and a washer controller coupled to the drive motor and the washer water supply system so as to respectively control operation thereof.

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.