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75results about How to "Improve fault tolerance" patented technology

Dual-redundant CAN bus communication system

ActiveCN105743755AImprove fault toleranceExtend system life
The invention provides a dual-redundant CAN bus communication system. The dual-redundant CAN bus communication system comprises two CAN buses and a plurality of redundant nodes, wherein the plurality of redundant nodes are simultaneously connected to the two CAN buses; a main-spare type hardware architecture is adopted in each redundant node, wherein each redundant node comprises a redundancy functional module; the redundancy functional module executes: node IDs of all the redundant nodes are sorted according to the size, such that a token ring is established; each redundant node sends an online monitoring message; according to the size sorting of the node IDs, except the node having the maximum node ID, each node sends the online state monitoring message to the node, the node ID value of which is greater than that of the self and the difference value of which is minimum; the node having the maximum node ID in a network sends the online state monitoring message to the node having the minimum node ID; each redundant node judges the state of any channel among the self and other redundant nodes on the CAN bus through the received online monitoring message; once the fact that a default channel of a certain node cannot be used for communicating is found, the default channel is instantly switched to a spare channel to perform bus communication; and thus, normal transmission of network data is ensured.
Owner:SHANGHAI CONCORD TECH

Combined navigation method based on INS (inertial navigation system)/GPS (global position system)/SAR (synthetic aperture radar)

InactiveCN104777499Aincrease redundancyImprove fault tolerance
A combined navigation method based on an INS (inertial navigation system)/GPS (global position system)/SAR (synthetic aperture radar) comprises steps as follows: an INS receiver, a GPS receiver and an SAR sensor are mounted in appropriate positions of an unmanned aerial vehicle in parallel; image matching is performed, and position navigation deviation of the INS is obtained and taken as an observed quantity to be input into a filter, and the observed quantity and other observed quantities are jointly filtered; GPS measuring deviation is obtained and taken as an observed quantity to be input into the filter, and the observed quantity and other observed quantities are jointly filtered; the filter integrates the measuring deviation from the GPS and the position navigation deviation, obtained through image matching, from the INS, and a navigation error estimated value is calculated. Topographic features are automatically and reliably extracted from an SAR image, a map image is formed in a digital map, and the SAR topographic features are automatically predicted; topographic deviation is accurately estimated and integrated; capture and matching are automatically initialized; the fault tolerance capability, the autonomy and the reliability of navigation are high.
Owner:HENAN POLYTECHNIC UNIV

Disc type double-stator hybrid excitation motor

ActiveCN106487178AImprove fault toleranceImprove magnetic field adjustment ability
The invention discloses a disc type double-stator hybrid excitation motor. According to the hybrid excitation motor designed in the invention, based on the principle of magnetic field modulation, the combination of a disc type permanent magnet motor and an electric excitation system is realized. The hybrid excitation motor has the characteristics of high power density, high moment density, a short axial size and a compact structure and also has the advantages of flexible adjustment of an excitation magnetic field and a wide speed regulation range, and thus the hybrid excitation motor can be applied to the field of electric vehicle hubs. The motor comprises two stators and one disc type rotor. An excitation winding and an armature winding are respectively arranged at the stators at two sides, and a permanent magnet pole and a core pole are distributed on the rotor. By using the magnetic field modulation technology, the permanent magnet on the rotor and the excitation winding on an inner stator generate a magnetic field same with an armature winding pole pair number at an external air gap, and a permanent magnet pole and an iron pole are uniformly distributed on the rotor. By using the magnetic field modulation technology, the permanent magnet on the rotor and the excitation winding on the inner stator generates a magnetic field same with the armature winding pole pair number at the external air gap, and thus the electromechanical energy conversion is realized. The back EMF waveform is improved through the design of a multi-phase structure and a three-layer fractional-slot integrated winding, and the reliability and fault tolerance of the motor are improved at the same time.
Owner:SOUTHEAST UNIV

Server, blockchain-based defrauding client information sharing method and medium

PendingCN109347789Aavoid single point of failureImprove fault tolerance
The invention relates to a blockchain technology, and discloses a server, a blockchain-based defrauding client information sharing method and a storage medium. The method comprises the following steps: after an application for uploading defrauding client information is received, calling a data verification intelligent contract initiating transaction, and verifying the defrauding client information; after the defrauding client information passes through the verification, signing an owner identifier of an uploader by using a digital certificate, and encrypting the defrauding client information;after an application of checking the defrauding client information is received, calling a data inquiry intelligent contract initiating transaction, extracting signature information corresponding to arequester in the transaction, acquiring authorization information, and verifying whether the requester is authorized to check the corresponding defrauding client information or not; and if YES, acquiring the corresponding encrypted defrauding client information, and decrypting the defrauding client information to acquire the defrauding client information. The blockchain-based defrauding client information sharing method realizes secure and controlled sharing of insurance defrauding data and can be comprehensively and effectively applied to anti-fraud identification.
Owner:PING AN TECH (SHENZHEN) CO LTD

Voltage dip data analysis method based on cloud computing technology

The invention provides a voltage dip data analysis method based on a cloud computing technology and belongs to the technical field of electric energy quality analysis. The voltage dip data analysis method comprises the steps of adopting a cloud computing platform based on hadoop1.1.2 to transfer waveform data in a relationship-based data base to a KV data base through a MapReduce programming mechanism and a transferring tool Sqoop and memorizing data with specific cyclic waves in a key value mode; reading one key value pair (key, value) serving as an input from the KV data base through each Mapper (mapping class); traversing one cyclic wave data and calculating an RMS (root-mean-square) value; sorting output results of all of Mapper (mapping class); combining RMS data curves of the same phase of the same event through a Reducer and traversing the curves to calculate dip characteristic values. The voltage dip data analysis method enables relevant data of voltage dip to be directly and parallelly calculated in multiple computers through the Hadoop cloud computing platform, really achieves superposition of computing capacity of multiple physical computers, accordingly improves the computing efficiency greatly and fault tolerance of the cloud computing platform and also improves the reliability of dip calculation results.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Multi-sensor-based trackless omnidirectional mobile robot system and control method thereof

ActiveCN109491390AImprove fault toleranceEliminate cumulative errors
The invention discloses a multi-sensor-based trackless omnidirectional mobile robot system and a control method thereof. The system comprises a control panel, a PC (personal computer), an inertial navigation sensor, a two-dimensional code recognizer, a laser sensor, an odometer, a motor driver and an omnidirectional moving chassis connected with the motor driver, wherein the PC is used for transmitting control signals to the control panel, and the inertial navigation sensor, the two-dimensional code recognizer, the laser sensor, the odometer and the motor driver are connected to the control panel separately. The control board reads the data information of the inertial navigation sensor, two-dimensional code recognizer, laser sensor and odometer and obtains a corresponding control signal after control calculation and processing in order to control a motor to drive a mobile robot to run along a designated path. The control method achieves accurate locating by combining the odometer witha two-dimensional code on the basis of an inertial navigation algorithm. The method achieves position state correction and accurate locating of the trackless omnidirectional mobile robot and improvesthe adaptability and stability of the trackless omnidirectional mobile robot in a man-machine hybrid environment.
Owner:HUAZHONG UNIV OF SCI & TECH

Novel two-section type seven-phase permanent magnet fault-tolerant motor

ActiveCN103795203AImprove fault tolerancegood physical isolation
The invention provides a novel two-section type seven-phase permanent magnet fault-tolerant motor and belongs to the technical field of permanent-magnet synchronous motors. The motor comprises a motor shell, two rotor assemblies, two stator assemblies, a rotary shaft, a bearing, a bush, an insulating sleeve, a magnet isolating board and an end cover. The two stator assemblies and the two rotor assemblies are coaxially installed on the same shell. The two stator assemblies are a three-phase winding and a four-phase winding respectively and connected with the rotary shaft through the rotor assemblies respectively, so that a three-phase permanent magnet fault-tolerant motor section and a four-phase permanent magnet fault-tolerant motor section are formed. The magnet isolating board is installed between the two motor sections. Phase windings of the stator assemblies are in a concentrated single-layer winding mode and are embedded separately through teeth. Power is supplied to each phase winding through an independent H-bridge driving mode. The novel two-section type seven-phase permanent magnet fault-tolerant motor is good in physical isolation capacity, magnetic field isolation capacity, thermal field isolation capacity and electric isolation capacity and can effectively restrain short circuit currents of the permanent magnet motor, greatly improve the reliability of the permanent magnet motor and satisfy the requirements for primary fault work, secondary fault work and third fault safety.
Owner:北京北航天宇长鹰无人机科技有限公司

Converged communication system-based heterogeneous network system construction method and meter reading method thereof

PendingCN114143250Aimproved fault toleranceImprove fault tolerance
The invention discloses a construction method of a heterogeneous network system based on a converged communication system, and the heterogeneous network system is constructed by taking a broadband carrier protocol stack as a main part and a micro-power wireless protocol stack as an auxiliary part, and adding a mixed Mesh routing protocol. According to the heterogeneous network system, communication is carried out through a mixed topology path formed by broadband carrier waves and wireless when network access fails in a broadband carrier wave mode or agency change is not completed, and communication is carried out by continuously using a broadband carrier wave path after network access of nodes is carried out again in a carrier wave mode or agency change is completed. According to the method, a broadband carrier protocol stack is used as a main part, a low-speed micro-power wireless protocol stack is fused as an auxiliary part, physical layers in a broadband carrier communication scheme and a low-speed micro-power wireless communication scheme are subjected to superior and disadvantage complementation, and a mixed Mesh routing protocol is combined, so that the fault tolerance of the network is improved, the network congestion is reduced, and finally a stable communication link is formed; and any node can normally communicate at any moment.
Owner:SUZHOU ZHUOZHI CHUANGXIN ELECTRONICS TECH

Hardness measuring device for automobile part production based on Rockwell hardness tester

InactiveCN112129657AImprove fault tolerance and practicalityImprove fault tolerance
The invention discloses a hardness measuring device for automobile part production based on a Rockwell hardness tester, and relates to the technical field of automobile part production. The hardness measuring device for automobile part production based on the Rockwell hardness tester comprises a mounting box, wherein a mounting box is welded and mounted at the bottom of the inner side of the mounting box; and a mounting block is welded and mounted at the bottom of the inner side of the mounting box. Through cooperative use of a fixing plate, a second sliding block, a hydraulic rod, a crossingblock, a hinge rod, a first clamping block, a second clamping block, a first vertical block, a second vertical block, a clamping block, an inserting block and an inserting rod, two groups of automobile parts can be clamped and fixed at the same time; on one hand, a worker does not need to hold the automobile parts by hands for hardness measurement; on the other hand, two groups of measurement values can be obtained through the arrangement of the two groups of automobile parts for comparison, so that the possibility of measurement errors is reduced; and the automobile parts with different sizesand different shapes can be fixed, so that the error-tolerant rate of the device is further enhanced.
Owner:湖州昱日汽车配件有限公司

Method and system for controlling mobile terminal and controlled terminal

The invention discloses a method and system for remotely controlling a terminal and the controlled terminal. In the method, an Android system and the same application software are installed on a control terminal and a controlled terminal. The method comprises the following steps that a controlled terminal obtains a screen capture picture of a current software interface of application software on the controlled terminal in real time, packages the screen capture picture into a data packet and forwards the data packet to the control terminal through a cloud server. And the application software ofthe controlled terminal receives the data packet forwarded by the cloud server, and obtains the control instruction from the data packet. Wherein the control instruction is generated based on the operation of a user on the screen capture picture displayed on the control terminal after the control terminal obtains the screen capture picture from the data packet and comprises an operation action and an operation parameter, and the operation action and the operation parameter are sent to the cloud server by application software on the control terminal. And the application software on the controlled terminal obtains the operation action and the operation parameter from the control instruction and executes the operation action and the operation parameter. The method can conveniently realize remote control under the condition that the method is not limited by the authority of the Android system.
Owner:COMNAV TECH
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