PATENT CLAIM ANALYSIS

Application Number: 16311462
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-07
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 without using an expensive angle sensor to realize highly accurate steering angle control using the determined estimate of the steering angle. A steering angle calculating section  201  acquires a motor rotation angle θs (i.e., motor angle θ) output from a rotation sensor and acquires a steering torque Tt output from a torque sensor in a steering angle control mode. The steering angle calculating section  201  determines an estimate θr of an actual steering angle using the acquired motor angle θ and steering torque Tt to realize highly accurate steering angle control using the determined estimate θr of the actual steering angle.

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, the control device 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, \n 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, \n where the steering control section comprises: \n a steering angle calculating section which determines an estimate \u03b8r of an actual steering angle of the steering mechanism using an input motor angle \u03b8 and outputs the estimate as an actual steering angle estimate \u03b8r; and \n a position control section which derives a steering angular velocity command value cord based on an input target steering angle \u03b8t and the actual steering angle estimate \u03b8r, \n wherein the steering angle control section feeds back the actual steering angle estimate \u03b8r calculated in the steering angle calculating section without using an absolute steering angle detection value detected by a steering angle sensor.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 98.0
- Lexical Diversity: 2.5098
- Patent Class: 701.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16311330', '15740076', '16307809', '15743791', '16326065']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5224378156886605
- 35 USC 102 Novelty (BERT): 0.5546692415185002
- Combined Prediction Score: 0.5256609582716445
- Mean Citation Score: 377.865174
- Max Citation Score: 430.07568
- Similarity Product: 426.5339907218456

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test