Electricity: motive power systems – Positional servo systems – Vehicular guidance systems with single axis control
Patent
1990-12-13
1992-07-07
Ip, Paul
Electricity: motive power systems
Positional servo systems
Vehicular guidance systems with single axis control
318139, 318628, 318138, 310112, 310114, 180252, H02P 552, B60K 1730
Patent
active
051285983
ABSTRACT:
A unique steer/drive control system is featured for steering a material handling vehicle by the use of directly coupled traction and steering motors. The steering motor is fabricated as a hollow shaft dc motor, whose inner ring represents the rotor, and whose outer ring represents the stator. The stator is connected to a frame of the vehicle carrying the steering and drive wheel. The rotor is integrally connected to the traction motor that drives the steering and drive wheel. A hand operated steering mechanism rotationally guides the vehicle. A steering angle sensor determines the difference between actual and desired heading of the steering and drive wheel. The steer/drive system utilizes the sensed difference, and generates a signal for controlling the heading of the steering and drive wheel.
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Ip Paul
Raymond Corporation
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