| 摘要 |
A steering control system for a tracked vehicle includes a spring centered s teering wheel which is rotatable in both directions to endstops. A steering control unit executes a transitional counter-rotation (TCR) mode algorithm which disables steering o r counter-rotation when the gear lever moves from park to neutral or from park to neutral to gear while the clutch is disengaged. Steering function can be re-enabled by turning the steering wheel to its centered position and then turning the steering wheel in either direc tion away from its centered position, or by turning steering wheel towards one of its endstop p ositions (without centering the steering wheel). If steering or counter-rotating is enabled th e second way, then during a transition period the turning rate as a function of the positi on of the steering wheel will be less than that of normal operation. If the steering wheel is t hen held at the endstop position, the control system will automatically and gradually increa se the rate of turning (by increasing an electronic steering gain value) until full normal turning rate capability is attained.
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