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Before discussing crabbing, a brief visual overview of the three main phases of all wheel steering will be provided:
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The most consistent method to ensure crabbing can be accomplished as needed would be to automate the processto create a mechanism that changes from front wheel steering/all wheel counter-phase steering to in-phase steering. For example, GMC implemented a Crabwalk(in-phase rotation/positive phase) feature in their Hummer EV that can be activated and turned off as needed(good example from 0:34 - 0:52):
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How does the driver interface with this system?
Independently steering the rear wheels first, then aligning the front wheels to be parallel to the rear(see figure 2buttons and levers (crabbing should not be done using “good handling skills“)
How is the steering implemented (mechanically or by wire or something else entirely)?
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