Electrical steering assist for material handling vehicles
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United States of America Patent
Stats
-
Mar 28, 2006
Grant Date -
Nov 10, 2005
app pub date -
May 6, 2004
filing date -
May 6, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
Electrical steering assist systems reduce the operator applied steering effort necessary to operate material handling vehicles. A steer drive unit including a motor is coupled to a steerable wheel for providing steering assist. The amount of steering assist provided by the steer drive unit is determined by a controller that receives input from one or more input sensing devices. The input sensing device(s) may include force sensors that detect an operator applied turning force. The input sensing device(s) may also detect the movement of one steering component relative to another. Further, the input sensing device(s) may include operator activated controls such as a joystick, potentiometer, switches and voice initiated commands. Input sensing device(s) may additionally be provided to detect operational parameters such as the load on the material handling vehicle, vehicle speed, or environmental conditions such as travel path obstruction detection, homing and proximity sensing.
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