16results about How to "High reliability requirements" patented technology

The invention relates to a low-fault-energy micro-twin synergistic deformation cobalt-based alloy and a preparation method thereof, and belongs to the field of cobalt-based high-temperature alloys. According to the alloy, on the basis of Co-Al-W, Ti and Ta which are smaller than or equal to 4 wt% are added according to calculation of a first principle, and the stacking fault energy is controlled to be-95 mJ / m < 2 > to-89 mJ / m < 2 > (0K). Aiming at the defect of insufficient high-temperature plasticity of the gamma '-phase strengthened cobalt-based alloy, an electronic structure is accurately regulated and controlled through a first principle, intrinsic stacking fault energy is designed to reach an optimal negative value interval, a micro-twin mechanism is activated, dislocation slippage and micro-twin coordination is realized, and the problem of sudden plasticity drop caused by single deformation mechanism (dislocation slippage leading) and grain boundary weakening of a traditional alloy is solved; the high-temperature strength and the plasticity are synchronously improved.

The invention provides a broadband gain positive slope amplitude-phase control multifunctional chip for a T / R assembly, which relates to the technical field of radio frequency integrated circuits and comprises a receiving channel, a transmitting channel, an equalization circuit, a numerical control attenuator, a numerical control phase shifter, a transmitting-receiving change-over switch module and a parallel control module. The parallel control module is used for outputting parallel control signals to the numerical control attenuator, the numerical control phase shifter and the transceiving change-over switch module; the equalization circuit is respectively connected with the receiving channel and the transmitting channel through the transmitting-receiving change-over switch module, so that a signal path of the receiving channel and a signal path of the transmitting channel multiplex the equalization circuit, the numerical control attenuator and the numerical control phase shifter; and the equalization circuit is of an on-chip integrated structure and is used for adjusting the gain of the receiving channel and the gain of the transmitting channel to present a positive slope characteristic relative to the frequency in a wide frequency band so as to compensate the frequency attenuation of an external device.

The invention discloses an unmanned aerial vehicle self-locking switch system and a control method thereof, and relates to the technical field of unmanned aerial vehicles. The system comprises a switch button, an auxiliary power module, a main power module, a self-locking unit, a control unit and an electric quantity display unit, stable startup and shutdown are achieved through dual-time-sequence button control that first pressing lasts for a first preset time and second pressing lasts for a second preset time in cooperation with a time-sharing cooperation mechanism of auxiliary power and main power, the self-locking unit locks the switch state, and the electric quantity display unit displays the electric quantity. And accidental on-off caused by signal jitter is avoided. The system is extremely low in leakage current in a shutdown state, effectively prevents battery over-discharge, has electric quantity display and state feedback functions, and remarkably improves the reliability, safety and user experience of the switch.

The invention relates to modified fusible polytetrafluoroethylene as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing a small-particle-size PTFE microemulsion as a seed through aqueous phase polymerization of tetrafluoroethylene monomers in a first polymerization reactor; and adding the seed emulsion, a tetrafluoroethylene monomer and a perfluoroalkyl vinyl ether comonomer into a second polymerization reactor, and initiating a copolymerization reaction on the surfaces of seed particles to realize molecular chain-level uniform compounding. In the reaction process, the growth process of a copolymer molecular chain is controlled by continuously supplementing monomers and accurately regulating and controlling the stirring rate. And condensing, washing and drying the obtained composite emulsion, carrying out melting granulation through strong shear extrusion equipment, and carrying out fluorination treatment to obtain a finished product. Compared with the prior art, the material prepared by the invention has obviously enhanced cracking resistance and flexibility.

This invention discloses a safe heating system and method for FTU batteries based on dual hardware adjudication, belonging to the field of low-temperature safety protection technology for power equipment. The system includes a battery body, a temperature sensing module, a heating module, a temperature adjudication module, an insulation shell, a power safety adjudication module, and a hardware AND gate adjudication actuator. The temperature adjudication module and the power safety adjudication module independently generate a heating enable signal and a safety enable signal, respectively. The input of the hardware AND gate adjudication actuator receives these two signals, and its output is connected in series to the power supply circuit of the heating module, configured to only conduct the circuit when both input signals are simultaneously valid. This method establishes an absolute priority veto right for power supply safety through hardware circuitry, fundamentally solving the major safety hazard of power loss in the core function of the feeder terminal unit due to battery heating power consumption during grid fault emergency modes.

The automatic filter element grabbing device based on flexible limiting comprises a hollow screw rod, a lower mounting plate and an upper mounting plate, a grabbing assembly used for grabbing a filter element is arranged at the bottom end of the hollow screw rod, and a pressure sensor is fixedly connected to the lower surface of the upper mounting plate; a suspension mounting plate is fixedly connected to the bottom end of the pressure sensor, sliding rods are fixedly connected to the four corners of the upper surface of the lower mounting plate, sliding grooves matched with the sliding rods are formed in the four corners of the suspension mounting plate, baffles are fixedly connected to the top ends of the sliding rods, and springs are fixedly connected to the lower surfaces of the baffles. Through cooperation of the hollow screw rod, the lower mounting plate, the upper mounting plate, the grabbing assembly, a pressure sensor, a suspension mounting plate, a sliding rod, a sliding groove, a baffle, a spring and a driving assembly, the grabbing process is more stable and safer, and the grabbing device is suitable for application environments with higher requirements for safety and reliability in nuclear-grade waste filter element replacement scenes.

The application discloses a model inference acceleration method, system, device and medium of a vehicle-mounted edge device, the method comprising: by analyzing the inference task request and dynamically hot loading the model weight, mapping the pre-filling stage and the decoding stage to different CUDA streams for parallel processing, and introducing a forced preemption mechanism to ensure the real-time performance of high-priority tasks. Through paging memory management and KV Cache hierarchical replacement strategy, the memory resources are optimized, and combined with power consumption monitoring and bottom layer hardware instruction set optimization, the technical problems of low resource utilization, high-priority task delay and excessive power consumption of the existing vehicle-mounted edge device in multi-task concurrency are solved. The application can effectively improve the inference throughput and system stability of the model in the vehicle-mounted edge device, solve the technical problems of low resource utilization, high-priority task delay and excessive power consumption of the existing vehicle-mounted edge device in multi-task concurrency, and is suitable for complex computing scenarios of intelligent vehicles.

The invention discloses a fault-tolerant interleaving DC-DC converter and a control method, the fault-tolerant interleaving DC-DC converter comprises N + 1 phases of interleaving Buck converters, the N phase is a main power phase, and the 1 phase is a redundant power phase; the MOSFET matrix switch and the voltage input end of each phase Buck converter are respectively connected with the input bus through an MOSFET tube, and the voltage output end of each phase Buck converter is connected with the output bus; the first driving circuit is connected with the grid electrode of the MOSFET tube; the second driving circuit is connected with the driving end of the Buck converter; the fault detection circuit is used for monitoring the drain-source electrode voltage of a power MOSFET in each phase of Buck converter in real time and outputting a fault signal when an overcurrent or short circuit fault is detected; and the controller is connected with the first driving circuit, the second driving circuit and the fault detection circuit. The technical problems that an existing fault-tolerant scheme is low in switching speed, high in size cost and sudden in output ripple are solved.

The application discloses a railway power distribution network fault information automatic diagnosis and positioning method and system, belongs to the technical field of power distribution fault diagnosis and positioning, and comprises the following steps: generating an auxiliary classification generative adversarial network, obtaining a standardized training data set balanced in categories and performing preprocessing; mapping the preprocessed data in the standardized training data set into a snowflake-shaped SDP image in a two-dimensional polar coordinate system, inputting the SDP image into a fault diagnosis model based on a deep convolutional neural network, and outputting a fault section and a preliminary fault distance; constructing a physical circuit model of a railway power distribution network distribution parameter, and calculating a theoretical simulation voltage and a simulation current by using a transmission line equation; starting iteration correction based on the Pearson correlation coefficient of each data, and outputting a diagnosis result. Through the fusion of data enhancement, feature transformation, intelligent diagnosis, physical inversion checking and topological adaptive adjustment, the application realizes high-precision, high-reliability and self-adaptive fault information automatic diagnosis and positioning.

This invention belongs to the field of thermal spraying preparation technology, specifically relating to a Ti-containing spraying powder and its preparation method. The preparation method of the Ti-containing spraying powder provided by this invention includes the following steps: mixing TiC powder and WC powder to obtain a mixture; subjecting the mixture to high-temperature chemical treatment, then ball milling and sieving to obtain a chemically treated powder; mixing the chemically treated powder, nickel powder, cobalt powder, a forming agent, and water, and then wet ball milling; spray-drying the ball-milled slurry and sieving to obtain a spray-dried material; and sintering the spray-dried material to obtain the Ti-containing spraying powder. The Ti-containing spraying powder provided by this invention can effectively reduce internal defects in the coating, achieve low porosity and high density, effectively improve the wear resistance of the coating, and also possess excellent bonding strength.

The application discloses a preparation method of a low-hydrogen embrittlement grade narrow copper bar, and a process flow of the method comprises smelting, upward drawing casting, cold deformation, annealing, four-roll flattening, annealing, drawing and winding and packaging; the narrow copper bar is prepared through the rolling forming after the cold working and the heat treatment of the upward drawing casting blank, inherent defects of the existing continuous extrusion process are avoided, the existence of the layered defects is eliminated, the reduction and the spreading in the flattening process are controlled, the annealing treatment is combined, the edge cracking of the copper bar under the deformation of a large width-thickness ratio is avoided, the uniformity of the grain structure is ensured, the requirements of the friction stir welding are met, the narrow bar with the width-thickness ratio of 5-15 is prepared, and the narrow bar meets the requirements of the high reliability of new energy batteries.

The application discloses an intelligent exhibition hall interaction control method and system based on multi-modal data, and relates to the technical fields of human-computer interaction and signal processing. The method comprises the following steps: acquiring multi-source original data in an interaction space, extracting a body pointing space vector, an end motion speed sequence and a micro-motion high-frequency tremor sequence, and performing space-time synchronous alignment; performing power spectrum density analysis on 6Hz-12Hz signal components to generate a first compensation factor representing physiological load and latching; performing second-order difference operation on the end motion speed sequence to match an exponential decay model, and generating a first convergence probability; dynamically adjusting an intention judgment adjustment factor by using the first compensation factor, and realizing nonlinear coupling of the first convergence probability and the space vector to generate an intention index value; and triggering a control signal if the intention index value meets the standard. The application converts physiological tremor into a system gain variable, cooperates with a dynamic convergence constraint to repair a feature mismatch problem, and improves the certainty and stability of determination under complex working conditions.

The application relates to a zero additional memory overhead parameter fault tolerance protection method and device, equipment and medium, and relates to the technical field of satellite remote sensing. According to an exponential redundancy coding strategy, a redundant copy of to-be-protected exponential information and corresponding check information are re-embedded and mapped to a low bit area of a mantissa field to generate reconstructed protection parameters. A two-way even check mechanism is used to determine the credibility of the to-be-protected exponential information and the redundant copy of the protection parameters, and corresponding exponential recovery logic is executed according to the determination result to obtain a target exponential domain. The low bit area of the mantissa field is zeroed or truncated to recombine a target mantissa field, the target exponential domain, a sign bit and the target mantissa field are combined to obtain recovered neural network floating point parameters. The application is compatible with an existing training process, effectively detects and corrects bit flip errors on key bits, and guarantees the numerical stability and original performance of a model during on-orbit operation without additional storage overhead.

This invention provides a method and system for assembling battery cell connection components, belonging to the field of electrical component manufacturing technology. The method includes the following steps: obtaining an initial feature dataset for each contact point in the battery cell connection component to be crimped; generating differentiated crimping parameters for each contact point based on the initial feature dataset and a mapping model; performing crimping on each contact point according to the differentiated crimping parameters, and collecting the dynamic contact resistance of the contact point in real time; calculating the relative deviation between the dynamic contact resistance and the target contact resistance; calculating and correcting the crimping force and crimping stroke in real time based on the relative deviation to obtain the crimped battery cell connection component; verifying the contact characteristics of the contact points in the crimped battery cell connection component, and outputting a qualified crimped battery cell connection component. This method can optimize the assembly process of battery cell connection components and improve the interfacial bonding stability and long-term reliability of the contact points of the battery cell connection component.

The invention provides an automobile electronic control system data storage method and system, and relates to the field of data storage, the method comprises the following steps: pre-dividing data storage areas on a storage device, and setting a data area basic information block at the initial part of each data storage area; traversing the basic information blocks of all the data storage areas, and generating a data area basic information dictionary in a memory; when a data writing operation is carried out, calculating a target physical address of to-be-stored data on the storage device according to the starting time of the time slice to which the to-be-stored data belongs and the total offset address of the current effective data storage area; and executing data writing, and if writing succeeds, completing the operation. According to the technical scheme, the data storage reliability is improved, and the data storage reliability is further improved through a designed multi-storage-device data mirror image storage auxiliary mode.