Telefonaktiebolaget Lm Ericsson (publ)

Volvo Truck Corporation

Other

Volvo Penta Corporation

Mats Rydström

Leo Laine

Bengt-Erik Olsson

Mats Jonasson

Per Ligander

Leon Henderson

Dan Rutger Weinholt

Thomas Eriksson

Thomas Ove Emanuelsson

Fredrik Rahm

Guido Montorsi

Lei Bao

Harald Jacobsson

Chidambaram Subramanian

Lena Larsson

Ola Ragnar Tageman

Christina Larsson

Martin Wilhelmsson

Robert Lindgren

Johan Lindberg

Tove Audhav

Per-Arne Thorsén

Adithya Arikere

Jonas Hansryd

Yinggang Li

Hamid Yhr

Göran Nilsson

Björn Gävert

Sidhant Ray

Ulf Stenbratt

Stefano Chinnici

Anna Rhodin

Niklas Fröjd

Ola Tageman

Alberto Tarable

Fredrik Ahlqvist

Thomas Emanuelsson

Dan Weinholt

A computer implemented method for determining a road friction condition associated with at least one wheel on a heavy-duty vehicle includes transmitting a radar signal by at least one polarimetric radar transceiver towards a surface supporting the vehicle, and receiving backscatter from the transmitted radar signal, where the radar signal comprises a first polarization component and a second polarization component different from the first polarization component, processing the received backscatter by a processing device to determine a friction parameter related to the road friction condition of the surface, monitoring the friction parameter over time to detect change in the friction parameter, and in case change in the friction parameter is detected, triggering friction estimation by a secondary physical friction estimation system.

Radar-triggered road friction estimation

A wheel module arranged to generate torque to accelerate and to decelerate a heavy-duty vehicle. The wheel module comprises at least one electric machine arranged for regenerative braking, an eddy current braking device, and an electronic control unit, ECU. The wheel module further comprises a communications port arranged for communication with an external control unit and a power distribution network arranged to connect the electric machine to the eddy current braking device and to a power port arranged to input and to output electrical power to and from the wheel module. The ECU is arranged to obtain configuration data via the communications port indicative of a maximum output power of the power port, and to control the power distribution network to maintain the output power of the power port below the maximum output power by distributing power from the at least one electric machine between the eddy current braking device and the power port.

Electrical wheel module for acceleration and braking of a heavy-duty vehicle

The present disclosure relates to a driveline for a vehicle. The driveline includes a set of electric machines with variable regeneration efficiency level. The set of electric machines with variable regeneration efficiency level includes at least one electric machine with variable regeneration efficiency level. An electric machine with variable regeneration efficiency level is such that the relation between electric energy and thermal energy produced the electric machine during regeneration can be varied. The driveline includes a cooling system connected to each electric machine in the set of electric machines such that the cooling system can remove heat generated by each electric machine in the set of electric machines.

Driveline for a vehicle

A first vehicle unit is couplable a second vehicle unit, so that a vehicle combination is formed, wherein the first vehicle unit comprises a transceiver configured to establish a sidelink to a transceiver of the second vehicle unit. In one embodiment, the first vehicle unit is configured to perform an automatic coupling procedure for coupling itself to the second vehicle unit, wherein the sidelink is established prior to completion of the coupling procedure. In another embodiment, the sidelink adds redundancy to wired communication link between respective vehicle unit computers. In yet another embodiment, the transceivers of the vehicle units remain independently addressable even after the vehicle combination has been formed.

Vehicle combination and method for forming a vehicle combination

A system for use in connection with a wheel torque generating component in a heavy-duty vehicle. The system comprises a fluid conduit, a compressor configured to provide a pressurized air flow through the fluid conduit, a mass flow adding arrangement configured to add a fluid to the pressurized air flow in the fluid conduit, thereby increasing the mass flow of the pressurized air flow, and a flow directing device arranged downstream of the mass flow adding arrangement and configured to direct the pressurized air flow, including the added fluid, from the fluid conduit to the wheel torque generating component so as to control the temperature of the wheel torque generating component. The invention also relates to a method for use in connection with a wheel torque generating component in a heavy-duty vehicle.

System and method for use in connection with a wheel torque generating component in a heavy-duty vehicle

A method for reversing an articulated vehicle comprising a tractor and one or more towed vehicle units, the method comprising arranging an electrified trailer (e-trailer) comprising one or more electric machines (EMs) and a steering function as a rearmost towed vehicle unit of the articulated vehicle, obtaining a reversal command indicative of a desired reversal maneuver by the articulated vehicle, configuring the e-trailer in a reverse towing mode of operation, wherein the e-trailer uses the one or more EMs and the steering function to reverse according to the reversal command while towing the tractor and any further trailer units of the articulated vehicle, configuring the tractor and the further trailer units of the articulated vehicle in a passive towed mode of operation, wherein the tractor and the further trailer units are towed by the e-trailer, and reversing the articulated vehicle by issuing the reversal command to the e-trailer.

Electrified trailer with reverse assist function

A control unit for controlling a marine vessel to avoid an emergency situation, the control unit comprising processing circuitry and a storage medium, wherein the control unit is configured to receive path data from one or more sensor devices indicative of a path traveled by the marine vessel in a forward direction and to store the received path data by the storage medium, characterized in that the control unit is configured to receive a trigger signal from an input device, and, in response to the trigger signal, determine a location for turning the vessel around, navigating to the location, turning the vessel around at the location, and navigating the vessel along the path in reverse direction.

Situation avoidance systems for marine vessels

An antenna arrangement for LOS-MIMO communication, comprising first and second directive antenna units, a mounting bracket, and a connecting element attached to at least one of the directive antenna units and arranged to separate the directive antenna units by a distance. The connecting element is rotatably arranged in relation to the mounting bracket, wherein a rotation of the connecting element about the rotation axis changes an effective distance d between the first and the second directive antenna units.

Rotatable antenna arrangement for LOS-MIMO

There is provided mechanisms performed by a control device for suppressing interference in a received reception signal in a radio transceiver device. The radio transceiver device is configured to receive the reception signal as a radio reception signal and to generate a radio transmission signal. The radio transmission signal and the radio reception signal occupy at least partly non-overlapping frequency bands. A method comprises obtaining a transmission reference signal based on the radio transmission signal. The method comprises estimating an interference distortion component signal based on the transmission reference signal and on a model of nonlinearity in a radio circuit of the radio transceiver device. The method comprises suppressing interference in the reception signal by combining the reception signal with the distortion component signal.

Interference suppression in a radio transceiver device

The present disclosure relates to a radio receiver, a radio transmitter, and methods for evaluating receive and transmit antenna patterns of directive payload antennas. The method for evaluating receive antenna patterns of a directive payload antenna comprises the step of steering a probing signal receive pattern of a steerable receive pattern antenna according to a pre-determined sequence of probing signal receive patterns, and receiving a probing signal via the steerable receive pattern antenna, as well as determining a probing signal quality value from the received probing signal as a function of the pre-determined sequence of probing signal receive patterns.

Control of directive antennas for wireless links

A transceiver () is disclosed for a communication node adapted to transmit a first signal to an other communication node and to receive a second signal from the other communication node. The transceiver comprises at least one antenna (), at least one transmitter module (), at least one receiver module (), and a mode alternator (). The at least one antenna is adapted to simultaneously transmit the first signal and receive the second signal, wherein the first and second signals have equal carrier frequencies and different polarizations. The second signal is for determining a channel characterization of a communication channel over which the second signal is received, and the channel characterization is for determination of one or more transmission parameters for the first signal. The mode alternator is adapted to alternate a mode of operation of the transceiver between at least a first and a second mode of operation. The first mode of operation comprises the transceiver transmitting the first signal using a first polarization and receiving the second signal using a second polarization, and the second mode of operation comprises the transceiver transmitting the first signal using a third polarization and receiving the second signal using a fourth polarization. Corresponding communication node, communication system, method and computer program product are also disclosed.

Transceiver with alternating mode of operation

A duplex unit allowing simultaneous transmission and reception of microwave signals on at least partly overlapping frequency bands, comprising an interference canceller unit and a control unit, the duplex unit being arranged to receive a transmit signal and to output a first part of the transmit signal at an antenna port, the duplex unit further being arranged to receive a receive signal comprising a payload signal at the antenna port, and to output a combination of the receive signal and a filtered transmit signal as an interference suppressed receive signal of the duplex unit.

Duplex unit

Data packets in a communications signal on a microwave link are received by a microwave link modem. One or more link performance degradation indicators in the data packets are detected by processing the communications signal. The microwave link modem provides to a packet control unit information relating to the one or more link performance degradation indicators such that control of the microwave link is facilitated.

Microwave link control

Example embodiments presented herein are directed towards a system, and corresponding method, for interference suppression of wireless communication signals. The method may comprise embedding a differential phase tracking signal (e.g., a zero amplitude differential phase tracking signal) in a transmitted wireless communication signal. Thereafter, a differential phase may be measured between the embedded transmitted wireless communication signal and a wireless reference signal. This differential phase measurement may be utilized in the suppression of interference in the wireless communication signal.

Transmitter having an embedded zero amplitude differential phase tracking signal and corresponding receiver

A verification device for a LOS MIMO/SIMO system which comprises a transmitter unit connected to a first and a second transmit antenna and a first receive antenna connected to a first down-converter which outputs a first down converted signal and a second receive antenna connected to a second down-converter which outputs a second down-converted signal. The first and the second receive antennas receive a first signal with reference symbols transmitted from one of said first and second transmit antennas, and the verification device obtains the phase difference between the first signal as received in the first and the second receive antennas respectively by comparing the first down-converted signal and the second down-converted signal with the reference symbols.

Growing community of inventors

Billdal, Sweden

Mats Rydström