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.

    SYSTEM FOR FUSING TWO OR MORE VERSIONS OF MAP DATA

    公开(公告)号:US20240385010A1

    公开(公告)日:2024-11-21

    申请号:US18318247

    申请日:2023-05-16

    Abstract: A system for fusing two or more versions of map data together includes one or more central computers that receive road network data representing a road network for a predefined geofenced area. The central computers compute a plurality of points that are each positioned at a predetermined distance from one another. The central computers create a plurality of bounding boxes for the road network based on the plurality of points and create a set of closest matched map data points for each bounding box that is part of the road network by executing a map-matching registration algorithm to align the two or more versions of map data with one another. The central computers execute a maximum likelihood estimation algorithm to determine probability distribution parameters of the set of closest matched map data points compared to the ground truth map data.

    SYSTEM FOR ADDING LANDMARK POINTS TO A HIGH DEFINITION MAP AND ENHANCING LONGITUDINAL LOCALIZATION

    公开(公告)号:US20240302179A1

    公开(公告)日:2024-09-12

    申请号:US18181038

    申请日:2023-03-09

    CPC classification number: G01C21/3811 G01C21/3819 G01C21/3848 G01C21/3881

    Abstract: A map updating system for a vehicle includes one or more input devices. The input device generates an input signal associated with data indicative of multiple landmark points relative to multiple road semantic features. The system further includes a computer having one or more processors that receive the input signal. The computer further includes a non-transitory computer readable storage medium for storing instructions. The processor is programmed to build a local map including the road semantic features and the landmark points. The processor is further programmed to determine a radius of road curvature associated with each road semantic feature and compare the radius of road curvature to a maximum radius of curvature threshold. The processor is further programmed to transmit an update signal to a cloud server, in response the processor determining that the radius of road curvature is less than the maximum radius of curvature threshold.

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