System for passively and actively monitoring and evaluating an electric power steering system

    公开(公告)号:US11084526B2

    公开(公告)日:2021-08-10

    申请号:US15988444

    申请日:2018-05-24

    Abstract: A system and method for passively and actively monitoring and determining the location of at least one mechanical anomaly for a power steering system of a vehicle is disclosed. The system includes one or more processors and a memory coupled to the processors. The memory stores a baseline waveform and data comprising program code that, when executed by the one or more processors, causes the system to receive at least one excitation signal and at least one response signal. The power steering system creates the response signal in response to receiving the excitation signal. In response to receiving the excitation signal and the response signal, the system is caused to estimate the frequency response between the excitation signal and the response signal based on a fast Fourier transform (FFT) algorithm. The frequency response is represented by an estimated waveform.

    Methods for steering system impedance control

    公开(公告)号:US10654511B1

    公开(公告)日:2020-05-19

    申请号:US16176586

    申请日:2018-10-31

    Abstract: An exemplary method for controlling a vehicle includes providing a vehicle steering system including a moveable steering column assembly and a moveable steering wheel assembly, a first actuator and a second actuator, the first and second actuators configured to move vehicle steering system from a first position to a second position, providing a plurality of sensors, the sensors configured to measure a force characteristic, providing a controller electronically connected to the sensors and the vehicle steering system, monitoring first sensor data received from the first sensor and second sensor data received from the second sensor, generating a reference model based on a desired output displacement and the first and second sensor data, calculating, a revised output displacement based on the reference model, and automatically generating a first control signal to control the first actuator and a second control signal to control the second actuator.

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