Passive calibration of a mechatronic device mated to a continuously variable planetary (CVP) hub

A method of calibrating a continuous variable planetary (CVP) hub of a CVP system for a vehicle, the CVP hub configurable to operate across a range of transmission speed ratios and including a shift driver configured to shift the CVP hub across the range of transmission speed ratios, the method comprising:

• initiating by a calibration engine of an automatic hub interface (AHI) a calibration event;
• determining by the calibration engine a current transmission speed ratio of the CVP hub and a current shift driver position of the shift driver;
• recording by the calibration engine the current shift driver position of the shift driver as a particular shift driver position and the current transmission speed ratio of the CVP hub as a particular transmission speed ratio;
• evaluating by the calibration engine the particular transmission speed ratio and the particular shift driver position against a known mapping to determine an offset;
• storing by the calibration engine the offset in [the] calibration settings for the AHI;
• determining by the calibration engine a full underdrive (FUD) position of the CVP hub by evaluating the known mapping;
• determining by the calibration engine a full overdrive (FOD) position of the CVP hub by iteratively upshifting the current shift driver position while using one or more sensor interfaces to monitor a rise in current and the current transmission speed ratio until the rise in current continues to increase indicative of an onset of a saturation region;
• storing by the calibration engine the determined FUD position and the determined FOD position in the calibration settings;
• and
• using the calibration settings by the AHI to control the CVP hub and to prevent the shift driver from shifting the CVP hub past the determined FUD position or the determined FOD position.

A method of calibrating a continuous variable planetary (CVP) system of a vehicle, the CVP system comprising a CVP hub and an automatic hub interface (AHI), the CVP hub configurable to operate across a range of transmission speed ratios and including a shift driver configured to shift the CVP hub across the range of transmission speed ratios, the AHI configured to control the CVP hub, the method comprising:

• initiating a calibration event;
• executing a sequence of motions of the shift driver while monitoring a transmission speed ratio of the CVP hub;
• upon completing the sequence of motions, determining a particular shift driver position and a particular transmission speed ratio;
• evaluating the particular shift driver position and the particular transmission speed ratio against a known mapping to determine an error;
• and
• offsetting one or more values in the known mapping using the error, thereby adjusting operations of the AHI when controlling the CVP hub.