1716 results about "Subframe" patented technology

The invention discloses an automobile front subframe lightweight design method considering modal constraint. The method comprises the following steps: (1) constructing a front subframe parameterized model and a weight-modal simulation model by adopting CATIA (Computer-graphics Aided Three-dimensional Interactive Application) and Altar Optistruct; (2) establishing a population in a design space based on a space filling Latin hypercube sampling method; (3) constructing a classification cooperation speed updating formula based on a particle swarm algorithm to generate offspring particle individuals; (4) constructing a Gaussian process machine learning model and a fitness evaluation function, and screening an optimal offspring particle individual based on a feasibility rule; and (5) constructing a comprehensive score calculation formula according to a statistical ranking method to determine the updating condition of the population individuals, updating the database and skipping to the step (3) until the optimized structure meets the requirement. According to the method, the coverage capability of the filial generation in the target space is enhanced through the classification collaborative speed updating formula, and the prediction precision of the Gaussian process machine learning model is continuously improved, so that the optimization performance of the lightweight of the front subframe of the automobile is improved.

An electrified vehicle includes a front subframe, a rear subframe, and a body that connects the front subframe to the rear subframe so that forces acting on the front subframe and the rear subframe are transmitted through the body. The vehicle also includes a housing coupled to an underside of the body between the front subframe and the rear subframe. An energy storage system is enclosed in the housing and includes a battery and a battery interface configured to electrically couple the battery to at least one component of the electrified vehicle.

The invention provides a welding tool for an automobile rear auxiliary frame cross beam, and belongs to the technical field of automobile cross beam welding, the welding tool comprises a base, a rear auxiliary frame main body, an operation table and a welding robot, and the operation table and the welding robot are arranged on the base, and the welding tool further comprises a positioning splicing assembly and a flow guide destressing assembly; protective gas is integrated on the third clamping jaw, the third clamping jaw can effectively guide protective gas flow to a welding seam while fixing the side cross beam, and effective flow guide of the protective gas can be achieved in cooperation with arrangement of the movable spraying pipe; during welding, the impeller is static to block gas, the flow speed is reduced, welding fluid is prevented from splashing and losing due to overlarge airflow impact, and stable combustion of welding arcs is maintained; in the cooling stage after welding is completed, the inductor controls the electromagnetic base to be powered off, gas flow is increased, the cooling speed is increased, meanwhile, vibration is generated to be matched with cooling to eliminate welding residual stress, the stability and reliability of a weldment are improved, the production period can be shortened, and the production efficiency is improved.

Apparatus and methods are provided to enhance communications for NTN. In some aspects, a base station (BS) comprises a processor configured to schedule an uplink transmission in response to an uplink transmission request from a user equipment (UE) using one or more subframes ranging from a first uplink subframe to a last uplink subframe. The processor is further configured to determine or receive a timing advance (TA) indicating amount of subframes transmitted during a time delay between the UE and the BS and schedule a downlink transmission aligned with the uplink transmission. The downlink transmission is blocked from subframes ranging from TA plus one or more subframes ahead of the first uplink subframe to TA minus one or more subframes ahead of the last uplink subframe. The processor is further configured to transmit and receive, via a non-terrestrial equipment, the uplink and the downlink.

The invention provides a point-to-multipoint communication method, device and system, equipment and a storage medium, and belongs to the technical field of optical communication. The method is applied to local side equipment in a point-to-multipoint communication system, and comprises the following steps: acquiring channel parameters of terminal equipment with downlink data currently and the data volume of the downlink data, and generating and sending at least one downlink frame based on the channel parameters of the terminal equipment and the data volume of the downlink data, the downlink frame comprises a plurality of subframes, in each downlink frame, the ith subframe bears management information of the (i + m) th subframe and downlink data of at least one terminal device, and for each subframe, the management information of the subframe comprises an identifier of the terminal device to which the downlink data borne by the subframe belongs and information of an occupied time-frequency resource. By adopting the method disclosed by the invention, point-to-multipoint flexible communication can be realized.

The invention discloses a communication-detection integrated sonar signal design method and device based on multi-pulse composite modulation, and the method comprises the steps: dividing a total frame period into a detection sub-frame and a communication sub-frame, enabling the detection sub-frame to achieve the high-resolution distance measurement through employing a bidirectional linear frequency modulation (BILFM) signal, a communication sub-frame adopts a multi-frequency multi-phase composite modulation (MTPM) signal to realize high-bit-rate data transmission; after band filtering, orthogonal demodulation, low-pass filtering and down-sampling preprocessing are carried out on detection sub-frame echoes, distance and speed information is extracted by adopting fast-time low-sampling two-dimensional fast Fourier transform (2D-FFT), unambiguous Doppler frequency is recovered by utilizing the Chinese remainder theorem (CRT), and accurate speed measurement of long-distance and high-speed targets is realized; a communication subframe receiving signal is subjected to IQ demodulation after down-conversion, Costas loop carrier synchronization and matched filtering, and multi-frequency multi-phase coded data are extracted. According to the method, the time-frequency collaborative design of detection and communication is realized, the distance resolution and the speed measurement range are considered, and the signal bandwidth utilization rate and the underwater information transmission reliability are remarkably improved while the system complexity is kept low. The device comprises a processor and a memory, and an executable program for implementing the method is stored in the memory. The technology can be widely applied to the fields of unmanned underwater vehicles, ocean monitoring, underwater sensing networks and the like.

One embodiment is a system having a master unit coupled to first and second base station sources having different OTA frame boundary timings, where an access point coupled to the master unit receives fronthaul data for the first and second base station sources, determines a common OTA frame boundary timing, and aligns OTA symbols and frames for the first and second base station sources to the common OTA frame boundary timing. Another embodiment is a system having a base station synchronized with a timing grandmaster and a master unit, synchronized with the timing grandmaster, coupled to the base station. The master unit determines the time of day using the synchronization, identifies a system frame and subframe number using the time of day, acquires configuration information for communications with the base station using the system frame and subframe number, and identifies frame boundary timing using the configuration information.

The invention discloses an automobile rear subframe rigidity and NVH two-target design method, device and medium, and the method comprises the steps: (1) determining an automobile rear subframe optimization variable, and building an automobile rear subframe rigidity and NVH two-target mathematical optimization model; (2) generating a population based on Latin hypercube sampling, and obtaining stiffness values and NVH values of population individuals through simulation analysis; (3) in the first stage, generating a candidate solution through dimension reconstruction, and screening offspring individuals by adopting non-dominated sorting and angle penalty distance; (4) in the second stage, three groups are obtained based on mutual information and differential grouping and used for collaborative optimization to generate candidate solutions, and a multi-criterion method based on machine learning is adopted to screen offspring individuals; and (5) performing simulation evaluation on the offspring individuals, updating the database, updating the population in combination with an angle cosine screening function, and turning to the step (3) until the optimized structure meets the requirement. According to the method, efficient design is realized through an optimization strategy of dimension reconstruction and grouping collaboration.

An after-market subframe bushing support assembly that includes a RS back top bushing member formed as a disc shape with a RS back top bushing member outer diameter and a RS back top bushing member first height, and the RS back top bushing member having a rectangular center opening with rounded corners defined by a pair of RS back top bushing member long sides and a pair of RS back top bushing member short sides, and a RS back top bushing member second height in a second area between the RS back top bushing member short sides and the RS back top bushing member outer diameter. The subframe bushing support assembly reduces noise-vibration-harness compared with other solutions and can easily be installed by car enthusiasts.

A subframe mount of a front subframe comprising a vehicle frame. The subframe mount comprises a main body configured to receive a securing feature of a frame body of the vehicle frame. The subframe mount also comprises an open-ended slot configured to enable translation of the securing feature independent of the subframe mount in response to an impact event.

An automotive sun visor is disclosed with enhanced functionality and aesthetic appeal for vehicle interiors. The sun visor includes a frame with a rotary detent mechanism housed within a hinge tube, facilitating precise rotational movement and secure positioning. The frame is constructed from two heat-welded plastic frame halves, eliminating the need for an expanded polypropylene layer, and reducing thickness. The sun visor features an integrated mirror made from advanced materials such as gorilla glass or polycarbonate, and LED lamps for illumination. The rotary detent mechanism comprises a detent bar, detent springs, and a detent subframe, providing a clicking action for tactile feedback when the sun visor reaches a stowed position. The sun visor's design allows for axial adjustment and pivotal movement between stowed and operational positions, contributing to safety and comfort within the vehicle.

Embodiments of this application disclose a data transmission method and apparatus, a device, and a storage medium, and relate to the field of optical communication technologies. In a coherent optical transmission system with dual-polarization transmission and single-polarization reception, a transmit end sends a data frame including a subframe including reference pilot information, a data unit, and a corresponding redundant code, where a 1st subframe in each data frame includes more reference pilot symbols than other subframes. A receive end performs parameter adjustment on a correction function based on pilot information and the reference pilot information in the received data frame.

The invention discloses a detection assembly system and a detection assembly method for a frame bushing, the detection assembly system comprises a press fitting part, a positioning part, a first detection part, a second detection part, a third detection part and a control part, the problem of separation of detection and assembly is solved, the axial rigidity detection of the bushing can be completed in the initial stage of press fitting, and the detection efficiency is improved. Extra detection procedures are not needed, the overall production cycle is greatly shortened, and the method is suitable for the large-batch production rhythm; potential quality hazards caused by sampling detection are eliminated, and abnormal linings are prevented from flowing into subsequent links; the positioning ends of the positioning pieces can be close to or far away from each other, and by combining the supporting design of the guide inclined surfaces, the tool can be adaptive to bushing outer sleeves of different sizes, frequent tool replacement is not needed, and the equipment debugging cost is reduced; while the assembly precision of the bushing is ensured, high efficiency, no damage and full coverage of rigidity detection are realized, the production quality and efficiency of the auxiliary frame are obviously improved, the later rework cost is reduced, and the control performance of the whole vehicle and the stability of NVH (Noise Vibration and Harshness) performance are ensured.

The invention discloses a front subframe lightweight design method and device based on RMNN, a medium and a program product, and the method comprises the steps: (1) constructing three simulation models of weight, stress and modal of a front subframe, and deducing a lightweight design model containing stress and modal constraints; (2) generating a population based on a uniform experimental design and a correlation criterion, performing simulation evaluation on the population, and constructing a database; (3) constructing a network architecture and training an RMNN; (4) generating a candidate frame set according to a random preferential strategy and the RMNN; and (5) establishing a radial basis function model, screening an optimal frame, performing simulation evaluation, updating the database and the population, returning to the step (3) until the optimization target reaches the standard, and outputting an optimal solution of the optimization parameter. According to the method, the feasible region is quickly searched through the RMNN, the problems that the high-dimensional design space search efficiency is low and the feasible region is difficult to recognize under multiple constraints are further solved in combination with the radial basis function model, and quick optimization can be carried out for the lightweight design of the front subframe.

Blind coverage for wireless devices is enhanced varying one or more transmission characteristics of a repeated transmission sent or received by apparatuses, where the repeated transmission includes, for example a Physical Downlink Shared CHannel (PDSCH) and / or a Physical Uplink Shared CHannel (PUSCH) transmissions. Varied characteristics may include a start time for each repetition, a duration for each repetition, a start frequency for each repetition, a bandwidth of each repetition, a number of repetitions for each subframe, and / or a number of repetitions for each slot. Repetitions may be within a Bandwidth Part (BWP) or span multiple BWPs. Repetitions may vary from one to another in start time, start frequency, duration, bandwidth, and slot and subframe patterns. Higher level signalling, such as Radio Resource Control (RRC) signalling may be used to control the inclusion or omission of a DeModulation Reference Signal (DMRS) in repeated transmissions.

The utility model relates to the technical field of automobiles, particularly provides an auxiliary frame mounting bracket and a vehicle, and aims to solve the problem of low strength of a mounting point of a rear auxiliary frame and a longitudinal beam of an existing vehicle. Therefore, the auxiliary frame installation support comprises a longitudinal beam, an installation column and a reinforcing component, the longitudinal beam is provided with an installation hole and a cavity, the installation column is connected with the installation hole, the first end of the installation column penetrates through the installation hole and extends into the cavity, the second end of the installation column is connected with an auxiliary frame, and the reinforcing component is arranged at the joint of the installation column and the installation hole. And the reinforcing component is welded with the mounting column and the inner wall of the cavity. Through the reinforcing structure, the strength and rigidity of the joint of the mounting column and the longitudinal beam can be remarkably improved, so that the auxiliary frame is more stable and reliable to mount, deformation and displacement of the joint caused by vibration or impact are reduced, the problems of deformation, cracking and the like of a mounting point caused by uneven stress or overload are effectively prevented, and the service life of the auxiliary frame is prolonged. And the stability and durability of the whole mounting point structure are improved.

A subframe attachment system for a vehicle includes a front brace, a rear brace assembly, and tethers. The front brace extends in a transverse direction of the vehicle and is configured to be mounted to a pair of longitudinal rails of a main frame of the vehicle. The front brace includes front mounting apertures configured to be accessible from the cargo bed. The rear brace assembly is spaced apart from the front brace and extends in the transverse direction of the vehicle. The rear brace assembly is configured to be mounted to the main frame and includes rear mounting apertures configured to be accessible from the cargo bed. The tethers include a first end rotatably coupled to the rear brace assembly and a second end configured to be mounted to respective longitudinal rails of the pair of longitudinal rails.

In some aspects, the techniques described herein relate to a motor vehicle including a sub-frame, an electric machine mounted to the sub-frame, and an electrical distribution system electrically coupled to the electric machine. In particular, the electrical distribution system is routed at least partially through the sub-frame.

The utility model provides an auxiliary frame and a vehicle and relates to the technical field of vehicle parts, the auxiliary frame comprises cross beams and longitudinal beams, the two cross beams are oppositely arranged, the two ends of each cross beam are respectively provided with a vehicle body connecting part, the two longitudinal beams are arranged between the two cross beams, the two ends of each longitudinal beam are respectively connected with the two cross beams, and the two cross beams are connected with the two longitudinal beams. The two cross beams and the two longitudinal beams define a frame-shaped structure, the frame-shaped structure is used for installing a driving motor, and reinforcing structures are arranged at the connecting positions of the cross beams and the longitudinal beams. Vibration noise generated when the driving motor is excited by the road surface can be transmitted to the cross beams and / or the longitudinal beams, the reinforcing structures are arranged at the connecting positions of the cross beams and the longitudinal beams, namely, the dynamic stiffness of the connecting positions is high, the vibration noise can be effectively absorbed, the vibration noise transmitted to the vehicle body connecting part or the vehicle body is small, and the service life of the vehicle body is prolonged. In other words, the noise transfer factor (VTF) is reduced, so that the noise vibration and harshness (NVH) performance of the auxiliary frame is improved, and the riding comfort of a driver and passengers in a passenger compartment is ensured.

The invention discloses a non-bearing type rear auxiliary frame, a chassis assembly and a vehicle. The non-bearing type rear auxiliary frame comprises a motor mounting beam frame and two longitudinal main beam frames. The motor mounting beam frame is used for mounting a driving motor and comprises a left longitudinal beam, a right longitudinal beam, a front cross beam and a rear cross beam, the left longitudinal beam and the right longitudinal beam are arranged in a spaced mode, the front cross beam and the rear cross beam are connected between the left longitudinal beam and the right longitudinal beam, and the left longitudinal beam, the right longitudinal beam, the front cross beam and the rear cross beam define a motor containing space used for containing the driving motor. The longitudinal main beam frames are used for being connected with a vehicle body floor assembly, the two longitudinal main beam frames are connected to the side, away from the right longitudinal beam, of the left longitudinal beam and the side, away from the left longitudinal beam, of the right longitudinal beam correspondingly, and the two longitudinal main beam frames are each provided with a plurality of vehicle body mounting structures and a plurality of suspension mounting structures. By means of the mode, the rear auxiliary frame is high in integration degree, a platform chassis assembly is formed, diversified whole vehicle development requirements are met, and product iteration is accelerated.

The invention relates to an integrated aluminum alloy hollow auxiliary frame and a liquid die forging method thereof. According to the liquid die forging method of the integrated aluminum alloy hollow auxiliary frame, the composite liquid die forging technology combining vertical injection, horizontal pressurization, center pouring and a radiation type multi-ingate outlet is adopted, the inorganic sand core and the preheating core setting technology of the inorganic sand core are combined, and the problems that the sand core is prone to crushing and sand burning is serious are effectively solved; meanwhile, the feeding process is optimized through a multi-stage pressurization curve, so that the smoothness of the inner wall of a cavity of the product reaches 0.2 mm, eutectic silicon is refined to 5-10 microns, the secondary dendritic crystal spacing of alpha dendrites is smaller than 20 microns, the strength deviation of the obtained product is smaller than 15 MPa, the elongation deviation is smaller than 1.5%, X-ray flaw detection reaches the 1-2 level, the process yield is 60-80%, and the product quality is improved. The defects that when the integrated aluminum alloy hollow auxiliary frame is prepared through an existing liquid die forging process, a sand core is prone to being crushed, sand burning is serious, the performance deviation is large, and the process yield is low are successfully overcome.

A method implemented by a Wireless Transmit / Receive Unit (WTRU) includes receiving a DeModulation Interference Measurement (DM-IM) resource, determining an interference measurement based on the DM-IM resource, and demodulating a received signal based on the interference measurement. An interference is suppressed based on the interference measurement. At least one DM-IM resource is located in a Physical Resource Block (PRB). The DM-IM resource is located in a PRB allocated for the WTRU. The DM-IM resource is a plurality of DM-IM resources which form a DM-IM pattern, and the DM-IM pattern is located on a Physical Downlink Shared Channel (PDSCH) and / or an enhanced Physical Downlink Shared Channel (E-PDSCH) of at least one Long Term Evolution (LTE) subframe. The DM-IM resources are different for different Physical Resource Blocks (PRB) in the LTE subframe. The DM-IM is located in a Long Term Evolution (LTE) Resource Block (RB), and the DM-IM pattern is adjusted.

An embodiment vehicle front structure including a front subframe disposed in a lower portion of a front compartment of a vehicle, the front subframe configured to support one or more front components, a guide member attached to a lower portion of a dash panel, the dash panel dividing the front compartment and a passenger compartment, and the guide member including an inclined wall that is inclined downwardly toward a bottom of the vehicle, a floor connected to the dash panel, and a battery disposed under the floor, wherein the guide member is located in front of the battery.

Methods, apparatus and systems for enabling interference avoidance, for example from self and neighboring interference are disclosed. In one representative method implemented in a Wireless Transmit / Receive Unit (WTRU) using time-frequency (TF) resources in first and second directions, the method includes comprising TF resource muting or symbol muting, by the WTRU, one or more TF resources for communication in the first direction based on information associated with a communication in the second direction or subframe shortening, by the WTRU, by one or more TF resources for communication in the first direction based on information associated with a communication in the second direction.

A method for selecting a cyclic shift diversity sequence, and a related apparatus are disclosed. The method includes: sending a frame by using a cyclic shift diversity (CSD) sequence, comprising: generating a frame, wherein the frame comprises a first data subframe conforming to a first communication mechanism and a third data subframe conforming to the first communication mechanism; sending the frame, wherein the first data subframe and the third data subframe are sent by using a cyclic shift diversity sequence. Under an EHT standard, a preferred cyclic shift diversity sequence can be obtained through selection from massive combinations of CSD values. Work efficiency is improved, and an operation burden is reduced.

The utility model discloses a front subframe rear swing arm bushing support, which comprises a rear sleeve, an upper support and a lower support, a bushing is inserted into the rear sleeve, the upper support and the lower support are connected with the rear sleeve, the rear sleeve is positioned between the upper support and the lower support, and the rear sleeve, the upper support and the lower support are made of QSTE420TM. According to the front auxiliary frame rear swing arm lining support, on the premise that the NVH performance index is met, the light weight effect can be achieved, and the light weight requirement is met. The utility model further discloses a vehicle.

A lighting device comprising a light source, a power source, a switch assembly, a subframe having an interior volume and a sealing surface that surrounds a first opening in the subframe, the interior volume of the subframe being sized to receive the power source, a membrane that seals to the sealing surface of the subframe, and a vent that acts to prevent liquids from entering the interior volume of the subframe via a second opening, while permitting for gases to be released from the interior volume through the vent.

A method of determining a lower bound on users' speed for efficient SRS resource handling for MU-MIMO transmission includes determining an eNodeB (eNB) or gNodeB (gNB) timing of a subframe; determining a User Equipment (UE) timing of the subframe; calculating a timing advance type corresponding to a Round Trip Time (RTT); calculating a distance to a base station corresponding to the Round Trip Time (RTT); calculating a distance traveled by a UE between two points based on the distance to the base station; calculating a user speed based on the distance traveled by the UE; deriving a lower bound based on the user speed; and filtering users that exceed the lower bound on user speed. The filtered users may be not assigned SRS. The non-filtered users may be assigned SRS and may subsequently be sent MU-MIMO transmissions.

The invention relates to the technical field of laser welding, in particular to an automobile special-shaped part laser welding device which comprises a rack, a mechanical arm, a laser welding head, a mounting plate, a first rotating frame and the like, the mechanical arm is mounted at the top of the rack, the laser welding head is mounted at the execution end of the mechanical arm, and the mounting plate is connected to the top of the rack; and the mounting plate is rotationally connected with a first rotating frame. The rear auxiliary frame can be fixed through the circular shaft, laser welding can be conducted on the rear auxiliary frame through the laser welding head, if laser welding needs to be conducted on the position of a hole in the rear auxiliary frame, the rear auxiliary frame can be clamped through the electric clamp, then the electric guide rail is made to be far away from the rear auxiliary frame, and the situation that the electric guide rail shields a welding area is avoided; the rear auxiliary frame can be fully welded, the welding quality is ensured, the rear auxiliary frame can be firmly clamped through the four electric clamps, and the welding precision is ensured.