PATENT CLAIM ANALYSIS

Application Number: 15926489
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-09
Patent Classification: ["701", "054000"]

Abstract:
A powertrain system includes a transmission, torque generating device, load coupled to a drive axle, a final drive unit in meshed gear engagement with the output shaft and the drive axle, and a controller. A requested output torque is processed using an open-loop lash state model populated with a capped output torque request table and a lash closure rate estimate table respectively providing a capped torque value and an estimated lash closure rate. Output speed is determined using a plant model, the capped torque value, and the estimated lash closure rate. The powertrain is controlled during the transition using the output speed. A lash angle may be calculated from the closure rate using an integrator logic block. A calibrated lash offset profile may be determined using the lash angle, and a reference speed may be generated using the lash offset profile.

Claim (Index 17):
A motor vehicle comprising:\n at least one electric traction motor; a transmission having an output shaft, wherein the transmission is coupled to and configured to receive an input torque from the at least one electric traction motor and, in response thereto, to produce an output torque sufficient for rotating the output shaft at an output speed; a set of drive wheels coupled to and driven by a drive axle; a final drive unit in meshed gear engagement with the output shaft and the drive axle; and a controller configured to manage a lash state transition of the meshed gear engagement via execution of instructions, wherein execution of the instructions by a processor of the controller causes the processor to:\n process a requested output torque using an open-loop lash state model populated with a capped output torque request table and a lash closure rate estimate table respectively providing, in response to the requested output torque, a capped torque value and an estimated lash closure rate; \n calculate the output speed using a driveline plant model as a function of the capped torque value and the estimated lash closure rate; \n calculate a lash angle of the meshed engagement from the estimated lash closure rate using an integrator logic block; \n apply a calibrated lash offset profile using the lash angle, the calibrated lash offset profile having a magnitude that is higher at earlier stages of the lash state transition relative to later stages of the lash state transition; \n calculate a reference speed of the electric traction motor using the calibrated lash offset profile; \n use the driveline plant model to calculate the output speed as a function of the capped torque value and the reference speed; and \n control a dynamic operating state of the powertrain via speed or torque control of the electric traction motor during the lash state transition, using the output speed, to thereby manage the lash state transition.

Metadata:
- Claim Count in Document: 41.0
- Percentile: 90.0
- Lexical Diversity: 2.23188
- Patent Class: 701.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['12264413', '11386527', '12916729', '11386315', '12255800']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4399719142165331
- 35 USC 102 Novelty (BERT): 0.5145446227292236
- Combined Prediction Score: 0.4474291850678022
- Mean Citation Score: 287.95206399999995
- Max Citation Score: 317.38065
- Similarity Product: 256.6880810186505

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test