초록 ▼

An electrical drive system is controlled by a microprocessor-based, electronic control unit which is coupled to operator-generated input signals and various feedback signals to individually control the major components of the drive system including a turbine engine, a three-phase alternator, power c

An electrical drive system is controlled by a microprocessor-based, electronic control unit which is coupled to operator-generated input signals and various feedback signals to individually control the major components of the drive system including a turbine engine, a three-phase alternator, power control units and their respective synchronous AC motors and gearboxes. A combat vehicle which utilizes the drive system includes a vehicle bed on which right and left sets of three wheels are mounted on opposite sides of the centerline of the vehicle in driving engagement with their respective gearboxes. Each of the wheels includes a hollow hub in which its gearbox and its synchronous AC motor is mounted. A torsilastic suspension system supports the wheels on the vehicle bed. The turbine engine drives the alternator which comprises a brushless, synchronous device having a variable three-phase power output. Each of the power control units first rectifies the three-phase output power, then controls the resulting DC power and finally converts the controlled DC power to variable frequency AC power to independently control the speed and torque of its motor. The vehicle turns by electrically slowing the motors on one side of the centerline of the vehicle and electrically speeding up the motors on the other side so that the vehicle turns about the wheels whose motors are electrically slowed (i.e. regenerative skid steering).

대표청구항 ▼

A vehicle bed comprising: a vehicle bed; right and left sets of wheels mounted on opposite sides of the centerline of the vehicle, each of said wheels including a hollow hub; a source of mechanical power mounted on the vehicle bed; a suspension system for supporting the wheels on the vehicle bed; ri

A vehicle bed comprising: a vehicle bed; right and left sets of wheels mounted on opposite sides of the centerline of the vehicle, each of said wheels including a hollow hub; a source of mechanical power mounted on the vehicle bed; a suspension system for supporting the wheels on the vehicle bed; right and left sets of wheel drive units, each of said wheel drive units being connected within its respective hub for rotation of its respective wheel upon the application of drive torque; right and left sets of electric drive motors, each of said motors being connected to its respective drive unit within its respective hub for receiving electrical power and converting the electrical power into drive torque; an alternator mounted on the vehicle bed and connected to the source of mechanical power for receiving the application of drive torque therefrom and converting the mechanical power into electrical power; and power control means mounted on the vehicle bed and coupled to the alternator and each of the motors, wherein said power control means conditions and controls the electrical power received by each of the motors to independently control the speed and torque of each of the motors wherein said power control means is responsive to power control signals to control the motors to provide regenerative skid steering, one of the sets of motors slowing rotation of its respective set of wheels, the one set of motors generating electric power, and the other set of motors increasing rotation of its respective set of wheels, the other set of motors being driven with increased electric power.