PATENT CLAIM ANALYSIS

Application Number: 16311330
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-06
Patent Classification: ["701", "041000"]

Abstract:
There is provided a control device for an electric power steering device, which determines an estimate of a steering angle instead of using an angle sensor when any abnormality is detected in the angle sensor to perform steering angle control using the determined estimate of the steering angle. When it is determined that the detected steering angle is normal based on a steering angle abnormality determination signal Flg_θh, a steering angle calculating section  201  outputs a steering-wheel angle θh as an actual steering angle θr, while when it is determined that the detected steering angle is abnormal, the steering angle calculating section  201  determines and outputs an estimate θr of an actual steering angle using a past value Zθr of the actual steering angle under normal conditions, a motor relative angle Δθm, and a relative twist angle Δθ of a torsion bar.

Claim (Index 1):
A control device for an electric power steering device that applies an auxiliary steering force to a steering mechanism of a vehicle by a rotational force of a motor, comprising:\n a vehicle-side ECU, which comprises\n a vehicle motion control section which calculates a steering angle command value \u03b8ref based on a target value of the vehicle and modifies a target value for a lateral position of the vehicle when disturbance such as crosswind occurs, where the steering angle command value \u03b8ref calculated in the vehicle motion control section is input to a steering angle control section in an EPS-side ECU; and \n the EPS-side ECU, which comprises:\n the steering angle control section which controls a steering angle of the steering mechanism based on an input steering angle command value \u03b8ref; and \n a switching determination/gradual change gain generating section which generates gradual change gains, by which steering angle control output from the steering angle control section and assist control output from an assist control section are multiplied, and multiplies the gradual change gains to make a determination to switch between a steering angle control mode by the steering angle control section and an assist control mode by the assist control section, wherein the steering angle control section comprises: \n a steering angle calculating section which outputs a detected steering-wheel angle \u03b8h as an actual steering angle \u03b8r when an input steering angle abnormality determination signal indicates normal, or determines an estimate \u03b8r of an actual steering angle of the steering mechanism using a past value Z\u03b8m of an input motor angle and outputs the estimate \u03b8r as an actual steering angle estimate \u03b8r when the steering angle abnormality determination signal indicates abnormal; and \n a position control section which derives a steering angular velocity command value \u03c9ref based on an input target steering angle \u03b8t and the actual steering angle \u03b8r or the actual steering angle estimate \u03b8r.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 98.0
- Lexical Diversity: 2.38095
- Patent Class: 701.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15740076', '16307809', '15743791', '16326065', '16086375']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4587823089567133
- 35 USC 102 Novelty (BERT): 0.5506299984952825
- Combined Prediction Score: 0.4679670779105702
- Mean Citation Score: 365.767728
- Max Citation Score: 417.13263
- Similarity Product: 352.9491837302256

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