Patent ID: 11906018
Assignee: FALLBROOK INTELLECTUAL PROPERTY COMPANY LLC
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A continuous variable planetary (CVP) system comprising:
a CVP hub comprising a shift mechanism, wherein the shift mechanism includes a shift driver element; and
a processing server system configured to calibrate the CVP system and detect errors within the CVP hub, the shift mechanism, or the processing server system, wherein the processing server system comprises:
one or more hardware processors; and
memory storing computer instructions, the computer instructions when executed by the one or more hardware processors configured to perform:
continuously monitoring or obtaining a transmission speed ratio of the CVP hub during adjustment or preservation of the transmission speed ratio of the CVP hub;
upon detecting that the transmission speed ratio reaches a particular speed ratio value, recording a corresponding mechanism position of the shift mechanism;
calibrating the CVP system based on the particular speed ratio value, or the corresponding mechanism position, and a known relationship between transmission speed ratios and positions of the shift mechanism;
determining or verifying a full underdrive (FUD) position by iteratively reducing the transmission speed ratio from the particular speed ratio value until an onset of a backlash condition is detected;
determining or verifying a full overdrive (FOD) position by iteratively increasing a motor current applied by an Automatic Hub Interface (AHI) until the transmission speed ratio stops increasing; and
implementing the CVP system according to the determined FUD and the determined FOD positions, wherein the implementing of the CVP system comprises stopping or reversing a direction of the shift mechanism upon reaching the FUD position or the FOD position.