Electrical Rotary Motion Actuator

1This project will address the design and layout of an electric rotary motion actuator for use on amphibious assault vehicles (AAVs) or similar vehicles. This system will greatly enhance the survivability and reliability of such systems through a modular approach to vehicle control. This approach allows the modern concept of modular vehicle system control, such as is used on aircraft, to be applied to AAVs. Several innovative features will be incorporated in the design. These are: 1. A compact, high torque, low inducrance brushless motor. 2. A compact, high power density PWM electronic driver. 3. A motor to driver commutation interface designed for high power thruput. 4. A very compact high strength gear reduction system. These features will be designed, analyzed via computer simulations and a layout of the mechanical system will be generated. The drive electronics will be packaged in an envelope compatible with the system. The resulting deliverable engineering model mock-up will demonstrate the packaging of a 12,000 lb-in output torque, 180 degree rotation system less than 8 inches in diameter and weighing less than 50 pounds. Power for the system will be supplied by 270 VDC power bus. Control commands will be input via the vehicle bus and could be proportional or bi-stable, depending on the overall system requirements. Alternately, a simple high/low logic command or an analog control signal could be used as input commands.