PATENT CLAIM ANALYSIS

Application Number: 16326065
Application Type: Utility
Filing Date: 2019-02
Publication Date: 2019-08
Patent Classification: ["701", "041000"]

Abstract:
[Problem] An object of the present invention is to provide an electric power steering apparatus that achieves manual steering even if steering intervention is performed by a driver during automatic steering, ensures more safety when the driver steers urgently, and enables both assist control and steering angle control. [Means for solving the problem] An electric power steering apparatus comprises a steering angle control section that calculates a steering angle control current command value for steering angle control based on at least a steering angle command value and an actual steering angle, and a switch judging and gradual-change gain generating section that judges a steering state based on manual input judgment and performs switching of the steering state; the switch judging and gradual-change gain generating section comprises a manual input judging section that performs the manual input judgment by using a threshold to a steering torque; and the electric power steering apparatus calculates a current command value by using at least the steering angle control current command value.

Claim (Index 37):
An electric power steering apparatus that drives a motor based on a current command value, and performs assist control and steering angle control to a steering system by driving and controlling said motor, comprising:\n a steering angle control section that calculates a steering angle control current command value for said steering angle control based on at least a steering angle command value and an actual steering angle; and a switch judging and gradual-change gain generating section that judges a steering state based on manual input judgment and performs switching of said steering state; wherein said switch judging and gradual-change gain generating section comprises a manual input judging section that performs said manual input judgment by using a threshold to a steering torque or by using an error threshold to an error between an estimated steering angle, which is estimated based on said steering angle command value, and said actual steering angle; wherein said steering angle control section comprises a position control section that calculates a steering angular velocity command value based on said steering angle command value and said actual steering angle, a steering angular velocity control section that calculates said steering angle control current command value based on said steering angular velocity command value and an actual steering angular velocity, and a steering intervention compensating section that obtains a compensatory steering angular velocity command value for steering intervention compensation depending on said steering torque, and said steering angle control section compensates said steering angular velocity command value by using said compensatory steering angular velocity command value; wherein said position control section comprises a reference model section that transforms said steering angle command value into a target steering angle by using a reference model, a proportional gain section that calculates a first steering angular velocity command value by multiplying a deviation between said target steering angle and said actual steering angle by a proportional gain, and a filter section that transforms said steering angle command value into a second steering angular velocity command value by using a feedforward (FF) filter, and said position control section calculates said steering angular velocity command value by adding said second steering angular velocity command value to said first steering angular velocity command value; wherein said steering intervention compensating section comprises a compensation map section having a steering intervention compensation map that determines a characteristic of said compensatory steering angular velocity command value corresponding to said steering torque, and said steering intervention compensating section obtains said compensatory steering angular velocity command value according to said steering torque through said compensation map section; and wherein said electric power steering apparatus calculates said current command value by using at least said steering angle control current command value.

Metadata:
- Claim Count in Document: 119.0
- Percentile: 99.0
- Lexical Diversity: 2.43836
- Patent Class: 701.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16086375', '15743791', '16095439', '15740076', '16307809']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5243864588810396
- 35 USC 102 Novelty (BERT): 0.5937263275013316
- Combined Prediction Score: 0.5313204457430689
- Mean Citation Score: 505.35857600000014
- Max Citation Score: 543.7320599999998
- Similarity Product: 449.9322762149369

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

Dataset: test