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914results about How to "Structural solution" patented technology

Parallel type hybrid vehicles energy management and assembly coordinated control method

The invention relates to a method for managing the whole vehicle energy of a parallel hybrid power vehicle and assembly coordination control, which belongs to the field of drive system control of the hybrid power vehicles. According to the running state of the hybrid power vehicle, the method respectively controls a control module for a control algorithm to enter the whole vehicle for electrified self-check and fault diagnosis, an ABS coordinated control module, a coordinated control module assisting an AMT to shift gear initiatively, a control module for motor initiative compensation, a control module for mode switching and energy management, a module for processing and displaying whole vehicle state information, and an initiative control module for the idling stop of an engine so as to control the energy distribution of a hybrid power drive system and the coordinated operation of each assembly of the system. The method can perform energy management on the hybrid power drive system and coordinated control on each assembly so as to achieve the optimal energy distribution among the assemblies of the hybrid power drive system, improve the fuel economical efficiency of the whole vehicle to the utmost extent, and reduce the exhaust emission of the engine, ensure that the while drive system can work reliably and efficiently to obtain the optimal performance of the whole vehicle running.
Owner:JILIN UNIV

Intelligent fault diagnosis system for ICNI system

The invention discloses an intelligent fault diagnosis system for an ICNI system, which can improve the maintenance efficiency, carry out intelligent and automatic diagnosis and is applicable to the ICNI system. According to the technical scheme of the invention, a knowledge base and a management module thereof carry out standardization research and mathematical modeling based on a fault tree, an SQL Server database software framework is adopted, a relational database is used for building a logic relation among a fault phenomenon, a fault mode, a detection method, a historical case and a fault tree internal event to form the knowledge base; and a diagnosis information acquisition module interacts with an automatic testing system via Ethernet to acquire diagnosis data from the ICNI system and a testing instrument, a reasoning machine module adopts CBR and RBR hybrid diagnostic reasoning, after comprehensive judgment is carried out on the fault phenomenon inputted by the user, the field knowledge stored by the knowledge base and the diagnosis data from the automatic testing system, a reasoning method is automatically selected to carry out reasoning diagnosis on the fault, a reasoning process and a reasoning result are outputted to an explanation machine module, and a diagnosis report is generated.
Owner:10TH RES INST OF CETC

Intelligent vehicle lane change path planning method based on polynomial and radial basis function (RBF) neural network

The invention relates to an intelligent vehicle lane change path planning method based on a polynomial and radial basis function (RBF) neural network. The intelligent vehicle lane change path planning method comprises the following steps that: the state information of obstacles and lane change vehicles in lanes are detected and determined according to a vehicle-mounted sensor, and the state information comprises positions, speed, acceleration and shapes; the lane change vehicles and the obstacles are geometrically covered, and in addition, a lane change path model using the time as the independent variable is built; boundary conditions of the lane change vehicles are obtained by the dynamic RBF neural network; the lane change path parameter is subjected to traversing in a certain range according to a certain step length, and the calculation of a polynomial method is combined to obtain the lane change path set under the specific boundary conditions; index functions for evaluating the merits of the lane change patch performance are defined, the optimal path in generated lance change paths is screened according to the index functions and is applied to the practical lane change process of vehicles; and whether the RBF neural network is updated or not is determined according to the merits of the boundary conditions of the generated lane change paths. The neural network has good self-adaption capability, so that the problem that the RBF neural network structure is oversize or undersize is solved.
Owner:BEIJING UNIV OF TECH

Multi-storied garage intelligent carrier

The invention relates to an intelligent carrier for a mechanical parking system, comprising two vehicle bodies connected through a set of connecting rods, wherein, at least one vehicle body is provided with a traveling mechanism and a positioning device; the two vehicle bodies respectively comprise two rushing board mechanisms; each rushing board mechanism comprises a rushing board body, clamping bars on two ends of the rushing board body, a combined guide rail which is arranged on the two ends of the rushing board body and fixed on the vehicle body, and a power unit which controls the movement of the rushing board body; the combined guide rail comprises a first guide unit and a second guide unit; the rushing board body is moved under the action of the power unit and further drives the clamping bars to make linear motion along the first guide unit or rotary motion along the second guide unit. All motions are completed through the driving of a motor, which solves the problem of structural reliability of the prior carrier; the rushing board mechanisms for clamping tyres are driven by the motor, adopt a leadscrew-nut transmission mechanism, a synchronous belt driving mechanism, a chain transmission mechanism or a wire cable transmission mechanism for transmission, and are guided by the guide rail, thereby having high reliability.
Owner:王俊

Chinese Web document online clustering method based on common substrings

The invention discloses a Chinese Web document online clustering method based on common substrings. As known to all, search engines are important in application of information searching and positioning with sharp increase of information on the internet. Web document clustering can automatically classify return results of the search engines according to different themes so as to assist users to reduce query range and fast position needed information. The Web document online clustering is characterized in that non-numerical and non-structured characteristics of Web documents are required to be met on the one hand, and clustering time is required to meet online search requirements of users on the other hand. According to the two characteristics, the invention provides the Chinese Web document online clustering method based on common substrings, and the method comprises steps as follows: (1) firstly, preprocessing the first n query results returned by the search engines so as to realize deleting and replacing operation of non-Chinese characters in the return results of the search engines, (2) extracting common substrings in the Web documents by utilizing GSA, (3) presenting a weighting calculation formula referring to TF*IDF according to the common substrings which are extracted and then building a document characteristic vector model, (4) computing pairwise similarity of the Web documents on the basis of the model to acquire a similarity matrix, (5) adopting an improved hierarchical clustering algorithm to achieve clustering of the Web documents on the basis of the matrix, and (6) executing clustering description and label extraction. The Chinese Web document online clustering method based on common substrings has obvious advantages on performance, clustering label generation and clustering time effects.
Owner:BEIHANG UNIV

Energy management and assembly coordination control method of hybrid excavator

The invention discloses an energy management and assembly coordination control method for a parallel-series hybrid power digger. The method is characterized by comprising the following steps of: acquiring an electrical control signal of a hydraulic pump, pressure of a pump port, negative flow feedback pressure and information of the electrical control signal of the pump; transmitting the acquired data to a power calculation module in an entire machine controller to calculate current power requirement of the digger; and distributing power output of an engine and a motor in a power coordination module of the entire machine controller by applying a minimum power-assisted control algorithm according to the power requirement. The method has the advantages that: energy management and coordination control of each assembly are performed on a hybrid power driving system according to an actual working state of the parallel-series hybrid power digger, so that optimal energy distribution is realized; a series of problems of improved complexity of the driving system, structural change and the like caused by hybrid power of a vehicle driving system are solved; the fuel economy of an entire vehicle is improved to the greatest extent; the exhaust emission of the engine is reduced; the entire driving system reliably and effectively works; and the optimal performance for running of the entire vehicle is achieved.
Owner:GUANGXI LIUGONG MASCH CO LTD

Stress sensor based electronic device functional profile feature point displacement field reconstruction method

The invention discloses a stress sensor based electronic device functional profile feature point displacement field reconstruction method. The method includes: determining a structural parameter and a material attribute of an electronic device functional profile and distribution positions and the number of stress sensors; acquiring a stress value measured by functional profile stress sensors under the action of service loads; establishing a structural finite element model of a functional profile; performing modal analysis on the functional profile; acquiring a modal shape and a stress modal shape of the functional profile; extracting a stress modal shape matrix corresponding to position nodes of the stress sensors; calculating a generalized modal coordinate; extracting a modal shape matrix corresponding to feature points of the functional profile; and reconstructing displacement of the feature points of the functional profile. Based on a modal analysis theory, the method can use stress values measured by the few stress sensors to reconstruct a displacement field of the feature points of the electronic device functional profile in the condition of unknown structural load information, and can direct structural distortion compensation and electrical performance compensation of the electronic device functional profile.
Owner:XIDIAN UNIV

Integral forming technology for hollow multi-cavity special-shaped surface composite material complex structural member

The invention provides an integral forming technology for a hollow multi-cavity special-shaped surface composite material complex structural member. The technology includes the steps that low-melting-point alloy is subjected to low-pressure casting, and a fusibility mold core is obtained to serve as a mandrel; the prepreg or fabric is laid on the outer surface of the mandrel of the fusibility mold core to be made into a prefabricated part; and after the mandrel with the prefabricated part and an outer mold body of a workpiece mold are subjected to die assembly solidification, a composite material grating workpiece with the fusibility low-melting-point alloy mandrel is placed into a drying box, and accordingly a qualified composite material grating is obtained after fusion. The integral forming technology for the hollow multi-cavity special-shaped surface composite material complex structural member solves the integral forming problem of the hollow multi-cavity composite material complex structural member with the complex inner contour and curvature, the low-melting-point alloy is used for preparing the mandrel, the cost is much lower than that of a metal mandrel, the manufacturing cycle is short, efficiency can be improved, the processing difficulty and technique implementation difficulty are low, and demolding can be performed easily.
Owner:HENGSHEN

In-ground type tap water pipeline leak detection device and detection method

The invention discloses an in-ground type tap water pipeline leak detection device. The in-ground type tap water pipeline leak detection device comprises a leak measuring head which is buried inside a water leak detection area and a leak detection circuit which is connected with the leak measuring head; the leak detection head is a humidity detection measuring head; the leak measuring head comprises two leads which are arranged in a parallel mode; insulating layers cover external sides of the leads; a plurality of conductive points are distributed on the two leads; the leak detection circuit is a resistance value detection circuit which detects a resistance value between the two leads. The in-ground type tap water pipeline leak detection device has the advantages that the structure is simple, the distribution is simple and convenient, the detection effect is good, and a structure of a to-be-detected pipeline is not required to be adjusted. The invention also discloses a leak detection method. The lead detection method comprises the following steps of a first step, burying the leak measuring head and burying the leak measuring head in the water leak detection area when a to-be-detected tap water pipeline is buried; a second step, connecting the leak detection circuit; a third step, performing water leak detection. The in-ground type tap water pipeline leak detection device has the advantages that the steps are simple, the design is reasonable, the structure of the to-be-detected pipeline is not required to be changed, and the detection accuracy is high.
Owner:XIAN UNIV OF SCI & TECH

Wireless passive sonic surface wave mixed parameter measuring sensor and parameters analysis method

The invention discloses a sound surface wave sensor which has a simple structure and can detect two physical quantities (such as temperature, pressure and strain, etc.) at the same time, as well as a method used in the parametric analysis of the physical quantity feedback signal detected by the sensor by means of the sound surface wave delay line theory. Compared with the prior sensor based on the same principle, the invention overcomes the disadvantages that the prior sound surface wave sensor can only detect a single physical quantity, or the prior sensor needs to adopt a relatively complex structure in order to detect two physical quantities. The invention can detect two physical quantities at the same time through making full use of the characteristic that the sound surface wave energy signal generated by an interdigital transducer can be transmitted in two directions at the same time. The sound surface wave sensor, which has a simple structure, has the outstanding characteristics of easy batch production and processing, a small volume, light weight and zero aging rate, etc.; theoretical analysis verifies that the sensor can ensure that the feedback signal of the two measured physical quantities can generate independent detection signal through data processing by means of a certain method.
Owner:HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL

Super-hydrophobic-oleophobic composite membrane preparation method

ActiveCN107737529AStrong hydrophobic and oleophobic propertiesNo wettingMembranesSemi-permeable membranesElectrospinningCellulose acetate
The invention relates to a hydrophilic modified super-hydrophobic-oleophobic composite membrane preparation method and particularly relates to a method for preparing a membrane by utilizing an electrostatic spinning method and performing two-time spray coating modification on the surface of the membrane. According to the preparation method disclosed by the invention, a two-step spray coating method is utilized to perform surface modification on a cellulose acetate electrostatic spinning CA-SiNPs basement membrane, so that the roughness of the electrostatic spinning CA membrane is further improved based on the original, a compact micron-nano cascade structure composite membrane is formed, and the roughness of the surface of the membrane is greatly improved. Meanwhile, compared with a traditional hydrophobic-oleophobic membrane, the hydrophilic modified super-hydrophobic-oleophobic composite membrane provided by the invention has wider pore diameter distribution and better softness; thus, a source and an application range of the hydrophobic-oleophobic membrane material are widened. The preparation method disclosed by the invention has the advantages of simple film formation technology, convenience in operation and easiness in achieving industrial production; furthermore, the prepared composite membrane has the advantages of good antifouling property, high permeation flux, strongchemical stability, good mechanical property, high interception efficiency and wide application prospect.
Owner:RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI +1

Self-excited atomic magnetic sensor for liquid crystal phase compensation and magnetic field measurement method

The invention discloses a self-excited atomic magnetic sensor for liquid crystal phase compensation and a magnetic field measurement method, which are used for a magnetometer. The self-excited atomicmagnetic sensor comprises a pumping light path perpendicular to the direction of the magnetic field, a probe light path along the direction of the magnetic field, and a circuit closed loop. The pumping light path sequentially comprises an atomic air chamber, a first polarizer, an acousto-optic modulator, and a laser. The probe light path sequentially comprises a photoelectric detector, an atomic air chamber in the pumping light path, a second wave plate1 / 4, a liquid crystal, a first wave plate1 / 4, a second polarizer, and a laser. The closed loop portion of the circuit comprises a photoelectricdetector, an amplifying comparator, a power driver, an acousto-optic modulator, and a counter. According to the liquid crystal phase compensation scheme, a phase shift caused by a circuit coil can beavoided, a phase shift of a larger range magnetic field can be achieved, and the problem that the circuit is unfavorable in the phase shift is solved by combining a light intensity modulation magnetometer and a self-excited magnetometer, the response speed is high, the liquid crystal phase compensation scheme is suitable for the various atomics, and the application value is high.
Owner:PEKING UNIV

Integral equipment bay

ActiveCN104875760AHigh degree of commercializationShorten the time occupied by the assembly stationAxle-box lubricationRailway bodiesEngineering
The invention relates to an integral equipment bay which comprises a framework, a bottom plate, an end plate and an apron board, wherein the bottom plate, the end plate and the apron board are all fixedly arranged on the framework; the framework consists of an upper edge beam, a lower edge beam, multiple cross beams, multiple camber beams arranged between the upper edge beam and the lower edge beam, and end part brackets arranged at two ends; the upper edge beam and the lower edge beam are arranged along the vehicle length direction, and the multiple cross beams are arranged along the vehicle width direction; the upper edge beam, the camber beams, the lower edge beam, the cross beams and the end part brackets are fixedly connected with one another by virtue of fastening pieces; the upper edge beam is fixedly arranged on a vehicle body edge body by virtue of a fastening piece. <0}{0><}0{>According to the integral equipment bay, an overall equipment bay module can be preassembled by virtue of toolings offline; during entrucking, the overall equipment bay module is connected with the vehicle body edge beam, so that the entire car assembling table bit occupation time is shortened, and the entire car assembly efficiency and the equipment bay commercialization degree are greatly improved.
Owner:CRRC QINGDAO SIFANG CO LTD

Switch and capacitor integrated fast frontier nuclear electromagnetic pulse source

The invention relates to a switch and capacitor integrated fast frontier nuclear electromagnetic pulse source of which the output can be continuously adjusted. The switch and capacitor integrated fast frontier nuclear electromagnetic pulse source is characterized in that a switch earth electrode is an outer cylinder with a coaxial structure; a switch motion trigger electrode and a low-inductance energy-storage capacitor sequentially form an inner core with coaxial structures from outside to inside; a switch gap is reserved between the switch motion trigger electrode and the low-inductance energy-storage capacitor; the low-inductance energy-storage capacitor comprises the structure that a plurality of film dielectric capacitance components are arranged between a high-voltage electrode and a low-voltage electrode and connected in series; and one end of the high-voltage electrode is arranged on one side of the switch gap and connected with a charging cable through a through hole on one side of the ground electrode. The switch and capacitor integrated fast frontier nuclear electromagnetic pulse source has compact circuit and low inductance, greatly reduces the frontier of output pulse, avoids the structure of a Matrix generator with multiple switches and multiple energy-storage capacitors and reduces the complexity of the system. Meanwhile, the output pulse frontier meets the IEC (International Electrical Committee) 6100-2-9 standard without using a peaking capacitor and a peaking switch; and the pulse source can continuously adjust the output voltage.
Owner:NORTHWEST INST OF NUCLEAR TECH +1

Cylindrical construction part provided with holed stiffening ribs and filled with steel fiber reinforced concrete

The invention discloses a cylindrical construction part provided with stiffening ribs and filled with steel fiber reinforced concrete. The cylindrical construction part comprises a square steel pipe which is vertically arranged, multiple vertical stiffening ribs which are respectively arranged on four side walls of the square steel pipe and a steel fiber reinforced concrete pillar which is formed through pouring steel fiber reinforced concrete filled in the lower part of the inner side of the square steel pipe, wherein the multiple vertical stiffening ribs are same in structure and size and are arranged in the same horizontal plane; and the vertical height of the multiple vertical stiffening ribs and the vertical height of a hollow steel pipe are same, the lower part of each vertical stiffening rib is a holed section with multiple through holes, the vertical height of the holed sections and the vertical height of the steel fiber reinforced concrete pillar are same, and the multiple through holes are arranged in a same vertical line from top to bottom. The cylindrical construction part provided by the invention has the advantages of simple structure, reasonable design and simpleness in construction, good stressing performance, and can overcome the problems of the conventional steel pipe concrete, such as large self weight, poor cohesive force between a steel pipe and concrete and poor structural integrity; moreover, the seismic performance of the integral structure is improved.
Owner:CHANGAN UNIV

Rotary type transducer main shaft device of supersonic vibrated drill

The invention discloses a main shaft device of a rotary type energy converter for supersonic vibration drilling, which comprises a main shaft component (1), an electric machine driving component, an energy converter power supply component (5) and a shell component; a housing screw (510) of the energy converter power supply component (5) is connected to a screw hole (131a) of the main shaft (103) of the main shaft component (1); and a slave driving belt wheel (32) of the electric machine driving component is sleeved on the main shaft (103) of the main shaft component (1), and an initiative belt wheel (31) and the slave driving belt wheel (32) are in transmission connection through a driving belt (3). The rotary ultrasonic energy converter main shaft device can be arranged on a bench drill, and the device can process workpieces when feed control components are added thereto, so that the device can lead an electric motor of the system to operate and provide electricity for the ultrasonic energy converter by using a slip ring (502a), thereby generating supersonic vibration along the axial direction of the main shaft while ensuring high-speed rotation of the the main shaft (103), and obtaining the compound movement of the rotary supersonic vibration by overlapping; a bit or a reamer are clamped at an end of the main shaft, thereby realizing the rotary supersonic vibration drilling or reaming.
Owner:BEIHANG UNIV
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