Patent ID: 11953089
Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  G | IPC F  G

Claim 10:
11. A vehicle, comprising:
a transmission system including:
a first planetary gear set;
a second planetary gear set;
a third planetary gear set;
a shaft coupled to the first planetary gear set; and
a shell configured to rotate about an axis of rotation, wherein the shell is directly connected to a second planet gear of the second planetary gear set and directly connected to a third planet gear of the third planetary gear set; and

a shaft sensing system configured to observe a rotation of the shaft about the axis of rotation, the shaft sensing system including:
a sensor target coupled to the first planetary gear set associated with the shaft, the sensor target including at least one ferrous region and at least one non-ferrous region and devoid of one or more magnets; and
a giant magnetoresistance (GMR) sensor spaced apart from the sensor target by a gap, the giant magnetoresistance (GMR) sensor configured to generate a magnetic field and to observe the sensor target to determine a rotation speed of the shaft,, wherein the shell is located in the gap, and wherein the shell is configured to rotate independently of the shaft.