Abstract: According to one or more embodiments a steer by wire steering system includes a handwheel actuator that provides a commanded position for a rack of a vehicle. The steer by wire steering system further includes a roadwheel actuator that moves the rack to a rack position based on the commanded position from the handwheel actuator. The steer by wire steering system further includes a diagnostic apparatus to compute a reference position based on the commanded position, and to compute a reference tracking error based on a difference between the reference position and the rack position. The diagnostic apparatus further determines a fault condition with the steer by wire system using the reference tracking error.

Abstract: A continuous welding method and device for a hybrid welding, a welded finished product and a train body. The method comprises: performing hybrid welding on a groove of a welding piece by coupling a laser and a variable polarity arc; wherein the defocusing distance of the laser is not less than a Rayleigh length of the laser. According to the method of the present disclosure, the power density of the laser on the surface of the welding piece is effectively reduced and the height-width-ratio of the weld seam is decreased, the diameter of the welding melted pore is increased, the voids caused by the collapse of the small pore in the welding melted pore can be effectively reduced, thereby solving the problem that the weld porosity is difficult to escape in the prior art, and reducing the generation of the pores, effectively improving welding stability and reliability, and improving the mechanical properties of the weld seams.

Abstract: This application provide a retransmission control method, a communications interface, and an electronic device. When a transmit end transmits a first data packet to a receive end and does not receive an acknowledgement corresponding to the first data packet within a first RTO, the transmit end retransmits a second data packet based on a second RTO. The second data packet is a data packet transmitted by the transmit end after the transmit end transmits the first data packet. The second RTO is related to a receive timestamp of the acknowledgement corresponding to the first data packet and a transmit timestamp of the first data packet.

Abstract: An infrared range-measurement device includes an emitting module, a receiving module and a calculating module, the emitting module includes an emitting light source and a driving circuit, and the receiving module includes a planar array photosensitive chip. The emitting light source, under the drive of the driving circuit, emits a test light beam, the test light beam is reflected by an object in a test range and then is incident on the planar array photosensitive chip, and the calculating module outputs a test light intensity or a test distance; an emitting lens is provided in an emitting light path of the emitting module. By shaping the test light beam to control a divergence angle and a shape of the light beam, and to make it match with the set working area of the planar array photosensitive chip, the overall utilization ratio of the test light beam is increased.

Abstract: This application describes transmission control methods and devices. One method comprises: sending, by a first device to a second device, first control signaling that instructs the second communications device to send a first group of data packets, the first control signaling comprises a first packet sequence number, a first packet sequence number range, and a first transmission time interval, the first group of data packets correspond to sequence numbers within the first packet sequence number range starting from the first packet sequence number, and the first transmission time interval indicates a time interval for sending data packets of the first group of data packets; and receiving, by the first device from the second device, at least one data packet in the first group of data packets.

Abstract: Technical solutions are described herein for steer-by-wire (SBW) steering systems to detect a rack-limiting condition and generate feedback signal that can provide responsive handwheel torque for a driver. According to one or more embodiments the steer-by-wire steering system includes a processor that receives input signals comprising a handwheel velocity signal and a vehicle speed signal. The processor determines a simulated left end stop position of a rack based on the input signals, and a simulated right end stop position of a rack based on the input signals. The processor compares a rack position with the simulated left end stop position and the simulated right end stop position. The processor generates a feedback signal based on a determination that the rack position is not within a range bound by the left end stop position and the right end stop position.

Abstract: Embodiments of the present invention provide an application interaction method, apparatus, and system. The method includes: receiving, by a transmission configuration module, a first instruction, where the first instruction includes an identifier of a first application and an identifier of a second application; determining, by the transmission configuration module, deployment information of the first application and deployment information of the second application based on the first instruction; determining, by the transmission configuration module, an information transmission mode between the first application and the second application based on the deployment information of the first application, the deployment information of the second application, and a transmission mode selection policy; and using, by the first application, the transmission mode to transmit information to the second application.

Abstract: According to one or more embodiments, a motor control system includes a first controller computing a first torque command using a first closed loop. The motor control system further includes a second controller computing a second torque command using a second closed loop. Both, the first controller and the second controller, compute the respective first torque command and the second torque command using a uniform calculation in which a pseudo/leaky integrator Ki s + ? in s domain (s is Laplace variable) is used and integrator state is calculated as Ki*?0te(?)exp(????t)d?, in time domain, which is implemented by discretization methods in electric control unit (ECU), where e is a tracking error, Ki is a predetermined integral parameter, and ? is a configurable parameter. The motor control system further includes a motor that receives a torque command for generating corresponding amount of torque based on the first torque command and the second torque command.

Abstract: Examples include techniques for backing up a file to long term “cold” storage by using circuitry, and logic for execution by the circuitry, to receive a request to back up the file in a distributed file system to cold storage, to copy the file from at least one data node of the distributed file system to cold storage, to set a location of the file in cold storage in a name node of the distributed file system, and to set a length of the file to zero in the name node.

Abstract: An anti-interference ranging method and an anti-interference ranging apparatus are provided. The method includes: detecting, by a first light detection and ranging device, whether a light detection process is interfered by a second light detection and ranging device in the ranging system; delaying, by the first light detection and ranging device, the light detection process for a preset time period if it is detected that the light detection process is interfered by the second light detection and ranging device; and acquiring, by the first light detection and ranging device, detection data collected in the light detection process, and processing, by the first light detection and ranging device, the detection data to obtain a ranging result if it is detected that the light detection process is not interfered by the second light detection and ranging device.

Abstract: According to one or more embodiments described herein, a steer by wire steering system includes a pair of actuators, a handwheel actuator that provides a commanded position to a roadwheel actuator, which moves a rack of the vehicle to a rack position based on the commanded position from the handwheel actuator. The steer by wire steering system further includes a controller that generates a handwheel torque command, the handwheel actuator generates a feedback torque based on the handwheel torque command. The controller further computes a tracking error based on a difference between the commanded position and the rack position. The controller further determines a catch motor torque value using the tracking error. The controller further modifies the handwheel torque command using the catch motor torque, the handwheel actuator generates an amount of torque that is substantially a sum of the feedback torque and the catch motor torque.

Abstract: The present disclosure relates to an optical ranging device. The optical ranging device comprises a housing, a bottom cover, an emitting lens, a receiving lens and a circuit board. The emitting lens and the receiving lens are fixed on the circuit board. The circuit board comprises a light emitting module, receiving module and data processing and controlling module. An infrared light emitted by a light source of the light emitting module passes through the emitting lens and the housing successively and enters the external environment. The infrared light reflected by the object passes through the housing and the receiving lens successively and is received by the receiving module which is connected to a signal processing and controlling module. The distance between the optical ranging device and the object is calculated based on the Time of Flight principle.

Abstract: A Fusarium solani strain and a use thereof in the control of southern blight disease of Dendrobium officinale Kimura et Migo, and the strain JSNL007-2 has been identified as Fusarium solani and has been deposited in China Center for Type Culture Collection on Mar. 10, 2017 with a deposit number of CGMCC NO. 13687. The Fusarium solani JSNL007-2 of the present invention has a significant effect on the disease resistance of Dendrobium officinale Kimura et Migo, especially for improving the ability of Dendrobium officinale Kimura et Migo to resist southern blight disease, and has a certain effect on reducing the use of chemical pesticides, which is an important means to ensure food safety.

Abstract: According to one or more embodiments, a steer by wire steering system includes a handwheel actuator, a roadwheel actuator, and a resynchronization module to dynamically adjust handwheel position that is used for rack position reference calculation. The dynamic adjustment includes determining a desynchronization amount based on a difference in an actual handwheel position and a synchronized handwheel position. The dynamic adjustment further includes computing a handwheel adjustment using the desynchronization amount, a vehicle speed, and a handwheel speed. The dynamic adjustment further includes computing an adjusted handwheel position based on the handwheel adjustment and the actual handwheel position. The dynamic adjustment further includes updating the reference rack position based on the adjusted handwheel position. The dynamic adjustment is continuously repeated until the handwheel adjustment is substantially equal to zero.

Abstract: A data transmission method and related apparatuses are disclosed. A sanding node transmits a plurality of data packets to a receiving node at an initial transmission rate. Each data packet carries a random sequence number and a rolling sequence number. The random sequence number identifies a data part of the data packet, and the rolling sequence number indicates a transmission sequence of the data packet. The sending node receives a packet loss feedback from the receiving node. The packet loss feedback is generated after the receiving node detects a packet loss event according to rolling sequence numbers of received data packets. The sending node determines a random sequence number of a lost data packet based on the received packet loss feedback. The sending node transmits a replacement data packet to the receiving node. The replacement data packet carries a different rolling sequence number.

Abstract: A link detection technology. In a link detection method, when a target event occurs on paths, in a plurality of paths, whose quantity exceeds a preset quantity, whether the paths on which the target event occurs share a bottleneck link is detected, and congestion control is performed. It can be learned that in the technical solution provided in the embodiments of this application, the target event is a trigger, and shared bottleneck detection is performed after the quantity of the paths on which the target event occurs exceeds the preset quantity. This implements purposeful link detection, reduces system overheads, and brings a fast convergence speed.

Abstract: Based on this application, one or more parameters for a multipath connection in a redundant transmission mode that are used to represent path characteristics are measured in the redundant transmission mode, and the one or more parameters are compared with a parameter that is measured in a multipath transmission mode and that is used to represent a path characteristic of an aggregated path of the connection at this time.

Abstract: According to one or more embodiments, a steer by wire steering system includes a handwheel, and a handwheel actuator configured to secure a position of the handwheel. The securing includes determining a transition of the steer by wire steering system to an ingress/egress mode. The securing further includes, based on the determination that the steer by wire steering system is in the ingress/egress mode, computing a holding torque command based on a difference in a present angle of the handwheel and a target angle of the handwheel, which is caused by an input torque. Further, the securing includes generating a holding torque corresponding to the holding torque command to secure the position of the handwheel.

Abstract: A data transmission acceleration method and related apparatuses are disclosed. A sanding node transmits a plurality of data packets to a receiving node at an initial transmission rate. Each data packet carries a random sequence number and a rolling sequence number. The random sequence number identifies a data part of the data packet, and the rolling sequence number indicates a transmission sequence of the data packet. The sending node receives a packet loss feedback from the receiving node. The packet loss feedback is generated after the receiving node detects a packet loss event according to a rolling sequence number of a received data packet. The sending node determines a random sequence number of a lost data packet based on the received packet loss feedback. The sending node retransmits a data packet corresponding to the determined random sequence number. The retransmitted data packet carries a new rolling sequence number.

Abstract: A data transmission method and apparatus, where a transmission end determines a redundancy time according to a delay requirement of a service, where the redundancy time indicates a time used for transmitting redundant data of native data of the service, and the redundancy time is less than or equal to a time indicated by the delay requirement. The transmission end determines a redundancy quantity N. The transmission end determines N redundancy transmission time intervals according to the redundancy time and the redundancy quantity. After the native data of the service is sent, in case of feedback data is not received within an nth redundancy transmission time interval, transmitting the redundant data of the native data for the nth time according to the nth redundancy transmission time interval.