A data transmission apparatus is applied to a LiDAR. The data transmission apparatus includes a first optical module, a second optical module, and a coupling optical system. The coupling optical system is arranged between the first optical module and the second optical module. The first optical module is communicatively connected to a LiDAR front-end apparatus, and the second optical module is communicatively connected to an upper application apparatus. The first optical module is configured to receive a first digital signal output by the LiDAR front-end apparatus and convert the first digital signal into an optical signal. The coupling optical system is configured to transmit the optical signal output by the first optical module to the second optical module. The second optical module is configured to convert the optical signal into the first digital signal and output the first digital signal to the upper application apparatus for processing.

The present disclosure relates to a method and system for measuring and calibrating steering parameters of a vehicle, a medium and an autonomous vehicle. The method includes: calculating a steering angle of a front wheel of the vehicle corresponding to each sampling moment at a plurality of consecutive sampling moments respectively. The calculation process at each sampling moment includes: calculating a first calculated value based on a yaw velocity of the vehicle, a vehicle velocity and a wheelbase; calculating a second calculated value based on a vehicle velocity, a lateral acceleration of the vehicle and the wheelbase; calculating a third calculated value based on a rotating angle of the steering wheel and a steering gear ratio; and calculating a steering angle of the front wheel at a current sampling moment based on the first, second and third calculated value of the steering angle of the front wheel.

The embodiments relate to a steering control device and method. Specifically, a steering control device according to an embodiment may include a first steering control module configured to delete a stored first code flash and store an update file according to an over-the-air (OTA) update when receiving an OTA update request, and a second steering control module to which a control right is transitioned from the first steering control module if the first steering control module receives the OTA update request.

A steering system circuit arrangement for operating an electric motor comprised by a steering adjuster may include a control unit and either a first sensor unit, which is designed to provide first input signals, or a second sensor unit, which is designed to provide second input signals that are different from the first input signals. The control unit is configured to both receive the first input signals provided by the first sensor unit and to provide an actuation signal for the electric motor by taking account of these received first input signals, and to receive the second input signals provided by the second sensor unit and to provide the actuation signal by taking account of these received second input signals. Further, an electromechanical steering system may include such a circuit arrangement. Methods for producing and operating such steering systems may also be utilized.

An electric power steering system includes a vehicle speed sensor configured to detect a vehicle speed, a motor driving circuit configured to supply power to an electric motor, a main power supply and a capacitor that can supply power to a driving circuit, a charging circuit configured to charge the capacitor based on the main power supply, and an ECU for power source control that controls the charging circuit. The ECU for power source control drives the charging circuit to charge the capacitor only when the vehicle speed is lower than a first predetermined value and an inter-terminal voltage of the capacitor is lower than a second predetermined value.

A method of reconstructing a detected faulty signal. A roll sensor fault is detected by a processor. A signal of the detected faulty roll sensor is reconstructed using indirect sensor data. The reconstructed signal is output to a controller to maintain stability.

Technical features of a steering system include a control module that dynamically determines an operating mode based on a set of input signal values such as lateral acceleration signal values and corresponding handwheel position values. The control module dynamically determines and learns classification boundaries between multiple operating modes based the input signal values. The control module further calibrates the steering system according to operating mode that is determined using the classification boundaries.

A steer-by-wire system and method for a vehicle, including and utilizing: a steering wheel system including a steering wheel, an angle sensor or mechanism coupled or applied to the steering wheel and for determining an angular magnitude of the steering wheel and provide a corresponding control signal, and an angular rate sensor or mechanism coupled or applied to the steering wheel and for determining an angular rate of the steering wheel and provide a corresponding control signal offset; and a steering actuator system including a wheel angle actuator coupled to one or more wheels of the vehicle and for receiving the collective control signal and control signal offset and turning the wheels in response. The steering wheel system further includes an angular rate filter/tuner for receiving an angular rate input from the angular rate sensor or mechanism and deriving an angular offset output corresponding to the control signal offset.

A vehicle adaptive steering control apparatus includes a front wheel steering mechanism having a right wheel steering portion and a left wheel steering portion that are independently operable relative to one another. A load detection device measures a condition indicative of vehicle loads at one of the following: the left and right suspension structures and the front wheel steering mechanism. A controller in electronic communication with a steer-by-wire steering wheel assembly, the front wheel steering mechanism and the load detection device, calculates toe angle adjustments for each of the right wheel steering portion and the left wheel steering portion in response to determining a load on each of a left front wheel and a right front wheel based on signals from the load detection device. The controller further makes the toe angle adjustments via changes in turning and steering movements effected by the front wheel steering mechanism.

The disclosure provides a steering system for a vehicle. The steering system may include a steering rack and an electronic power steering (EPS) system. The EPS system may include an actuator that assists movement of the steering rack, a torque sensor; an angle sensor; and an EPS system controller. The EPS controller may be configured to determine a steering rack center point indicating a center of the steering rack between opposite maximum steering angles. The EPS controller may be configured to determine a vehicle center zero point. The EPS controller may be configured to store the vehicle center zero point in response to determining that the vehicle center zero point is within a threshold of the steering rack center point.