68results about How to "Shorten the design and development cycle" patented technology

The invention discloses an automotive suspension test bed, relates to the technical field of fatigue verification for an automotive suspension and provides the automotive suspension test bed which is simple in structure, high in strength and capable of shortening the development and verification period of the automotive suspension and reducing test expenditures. The automotive suspension test bed comprises a plurality of stand columns, wherein a clamp plate with the height and the angle adjustable is installed on each stand column, and a calibrating mark is further arranged on each stand column and used for calibrating the installation position of the corresponding clamp plate. The automotive suspension test bed further comprises a loading mechanism used for being connected with a loading device, the stand columns are assembled with an automotive frame through the clamp plates in a matched and connected mode, the loading mechanism is connected with a brake disc on the frame, and the direction of the loading device is controlled so that the loading mechanism can perform suspension endurance verification under different working conditions. The automotive suspension test bed is mainly used in tests of fatigue verification for the automotive suspension.

The invention relates to a prediction method and device of thermal-runaway safety of a power battery and a computer-readable storage medium. Initial autogenetic-heat temperature of the first power battery is obtained; the highest temperature at the time when a thermal runaway of the first power battery occurs is obtained on the basis of a thermal-runaway reaction kinetics model of the power battery; and the thermal-runaway safety of the first power battery is judged according to a relationship curve of the initial autogenetic-heat temperature and the highest temperature rise. According to theprediction method of the thermal-runaway safety of the power battery, the thermal-runaway safety of the first power battery can be predicted in a case of not making the whole battery, necessary processes of assembling the whole power battery in a traditional safety design process are reduced, a power-battery design and development cycle is shortened, design and development costs are saved, and efficiency of power-battery safety design is improved.

The invention discloses a double-volute hydraulic design method based on an RSM model. The design method comprises the steps of 1) solving double-volute initial hydraulic geometric parameters based on a velocity coefficient method; 2) performing optimization solving on double-volute key geometric parameters by adopting an RSM-based adaptive sequence algorithm; 3) performing parameterization automatic modeling based on a CATIA macroprogram, and outputting to obtain a three-dimensional double-volute model; 4) by adopting a GridPro script file to output a grid file used for numerical value calculation; 5) automatically completing grid loading and boundary condition setting based on a CFX CCL language drive program to complete calculation of related data, and outputting a calculation result; 6) repeatedly executing the steps 3) to 5) to obtain a double-volute scheme with the minimum total pressure loss coefficient; and 7) taking the data obtained in the steps 1) to 6) as the double-volute design parameters to manufacture a double-volute centrifugal pump. By adoption of the double-volute hydraulic design method, the double-volute hydraulic optimization design can be realized.

The invention discloses a front longitudinal beam anti-collision performance design method for a passenger vehicle and aims at solving the problems that when the traditional trial-and-error method is used for designing the front longitudinal beam of a car in the prior art, a computer simulation model needs to be repeatedly modified, the testing needs to be repeatedly carried out, and the like. The front longitudinal beam anti-collision performance design method for the passenger vehicle comprises the following steps that 1, the average crushing counter force expression (shown as the accompanying drawing) of a multi-right-angle cross section thin wall beam is deduced, in the expression, Pm is the average crushing counter force, the unit of the Pm is kN, n is the number of the cross section right angles of the multi-right-angle cross section thin wall beam, M0 is the unit length plastic limit bending moment, the unit of M0 is N.mm, l is the cross section circumference of the multi-right-angle cross section thin wall beam, the unit of the l is mm, h is the wall thickness of the multi-right-angle cross section thin wall beam, and the unit of the h is mm; 2, the cross section of the crushing deformation part of the front longitudinal beam is designed; 3, the average bending moment expression (Mm=(0.3-0.5)Mmax) of a rectangular cross section thin wall beam is deduced, in the expression, Mm is the average bending moment of the rectangular cross section thin wall beam, and the unit of the Mm is N.mm; and 4, the cross section of the bending deformation part of the front longitudinal beam is designed.

The invention discloses an air-conditioner random vibration comprehensive test device and a method thereof. The air-conditioner random vibration comprehensive test device comprises a vibrostand body has a vibrostand countertop used for transmitting vibration to an air-conditioner to be tested, a vibration chamber for holding the air-conditioner to be tested, a refrigerant leakage detector for detecting whether a refrigerant of the air-conditioner positioned inside the vibration chamber leaks or not, and a stress-strain testing device for detecting the stress-strain condition of pipelines of the air-conditioner to be tested. According to the invention, exact time of brittle fracture or fatigue crack of the air-conditioner pipeline system under different working conditions and different incentive intensity conditions can be determined rapidly. With the combination of the stress-strain testing device arranged on the pipeline system, an S-N curve of fatigue life of a real product-level brittle fracture part of the air-conditioner pipeline system can be calculated accurately, and reliability and life of the air-conditioner product can be accurately designed according to the curve. In addition, the device provided by the invention is simple to operate and has high testing efficiency.

A mathematical model based centrifugal pump volute design method includes firstly, solving basic geometrical parameters of a volute according to a velocity coefficient method and calculating throat area of the volute by a velocity moment method; secondly, controlling and calculating different section areas of the volute according to an area control coefficient and a section area calculating equation and changing the control efficient to acquire volute hydraulic models of different section area distributions; thirdly, initializing geometric control variables of the volute, modeling for control points of different sections of the volute through mathematical models such as elliptical, circular, linear models, and expressing the different control points by a three-dimensional coordinate method; fourthly, utilizing a volute section area successive approximation and iteration algorithm to rapidly solve the coordinates of different section areas and section control points of the volute precisely; and fifthly, performing three-dimensional curve modeling to the volutes represented by different control points on the basis of three-dimensional design software.

The invention discloses an intelligent bus switching controller which comprises the components of a switching controller housing, a microcontrol unit and a power supply unit which are arranged in the switching controller housing, a first serial communication interface and a second serial communication interface, wherein the first serial communication interface and the second serial communication interface are in signal connection with the microcontrol unit. The microcontrol unit is used for receiving data of a bus communication card, comparing data which are transmitted by the bus communication card with stored data, judging bus type of the bus communication card, calling a corresponding communication protocol conversion program and converting data that are transmitted by the bus communication card to data which can be identified by an actuator. The microcontrol unit is further used for receiving data of the actuator, calling the corresponding communication protocol conversion program according to the judged bus type of the bus communication card, and converting the data which are transmitted by the actuator to data which can be identified by the bus communication card. The intelligent bus switching controller has advantages of reducing load and memory of an actuating mechanism master control CPU and furthermore realizing seamless switching or compatibility between various field buses.

The invention provides a scroll compressor fluid simulation data prediction model based on LSTM. The method comprises the steps: calculating a three-dimensional transient flow field value of an internal working cavity of the scroll compressor during operation by using a method of calculating fluid dynamics; collecting the change conditions of temperature, pressure and speed values at the observation points along with time; finally, substituting the acquired time sequence data into an LSTM network for training, and predicting the change trend of the thermodynamic value of the observation pointalong with time by utilizing the trained prediction model.

The method includes following steps: control command to be transferred at operating terminal is transferred to remote communication device i.e. command interpreting part of operation system of operated terminal; command interpreting part of operation system of operated terminal receives control command transferred from operating terminal and processes the command; based processed result, the operated terminal carries out relevant operation so as to realize remote control for operated terminal. The invention also discloses the system including data transmission part, command interpreting part of operation system of operated terminal, and executive part of operated terminal. Advantages are: simplifying server setup at operated terminal; shortening develop cycle; lowering cost of remote controlling system, and raising processing capability of network terminal device.

The invention discloses a robot automatic glaze spraying system. The robot automatic glaze spraying system comprises a pretreatment unit, a glaze spraying unit and a posttreatment unit from upstream to downstream in sequence. The pretreatment unit comprises a plurality of pretreatment modules. Each pretreatment module comprises a blank trimming and dust collection position. The posttreatment unitcomprises a plurality of posttreatment modules. Each posttreatment module comprises a detecting and cleaning position. The glaze spraying unit comprises a plurality of glaze spraying modules. Each glaze spraying module comprises a glaze spraying conveying line, a glaze spraying robot and an air extraction and dust collection room. Each unit of the robot automatic glaze spraying system is a detachable module combination. The number of the pretreatment modules, the number of the glaze spraying modules and the number of the posttreatment modules can be set freely according to the production requirements. The production adaptability is greatly improved. The modules can be combined freely according to the production requirements. The design and development cycle of a glaze spraying production line is shortened. The number of the modules can be increased and reduced at will in the production process. The production cost is controlled flexibly.

The present invention relates to a product structure parameterized design optimization method and system. The method comprises: S1. defining a parameter that needs to be optimized and an optimization goal of product structure design; S2. establishing a three-dimensional parameterized model of a product structure, wherein the model comprises the parameter that needs to be optimized; S3. according to the parameter that needs to be optimized, establishing an optimization combining space of the product structure; S4. generating all three-dimensional design models in the optimization combining space by using the three-dimensional parameterized model; S5. writing a batch processing command set of computational fluid dynamic analysis, and establishing computational fluid dynamic analysis models corresponding to all the three-dimensional design models in a batch processing manner; S6. performing analysis calculation on the computational fluid dynamic analysis models one by one by using a high-performance computer, and outputting all optimization goal calculation results; and S7. comparing all the optimization goal calculation results, and screening out the best three-dimensional design model. According to the product structure parameterized design optimization method and system provided by the present invention, the optimization of product design parameters can be rapidly completed.

The invention discloses a Layout wiring structure for improving signal SI quality. Each of positive and negative differential routes in a PCB comprises a plurality of D1 sections, a plurality of D2 sections and a plurality of D3 sections; the D1 sections and the D2 sections of any differential route are arranged in parallel in a staggered manner; and any adjacent D1 and D2 sections of any differential route are connected through the D3 section. The invention furthermore discloses a Layout wiring method for improving the signal SI quality. The positive and negative differential routes parallel to each other on the PCB are subjected to wiring in a longitudinal repeated shift mode. The signal transmission delays on the positive and negative differential routes in a differential coupling pair are compensated for enabling the delays of signals, reaching a receiving end of a device, on the two routes to be same, so that the risk of differential mode to common mode noises is lowered and the signal SI quality of high-speed signals during long-distance transmission is improved.

The invention discloses an assembly line tight coupling accelerator interface structure based on instruction extension, which comprises a correlation detection module and an acceleration engine; the correlation detection module is arranged at a decoding stage and is used for detecting data correlation of an acceleration instruction to register file RF access; after the acceleration instruction enters a decoding stage, a related detection module is started, a register file RF access request is input, and only when it is judged that correlation is generated, a blocking response signal is generated; the acceleration engine is arranged at the operation execution stage; the decoding stage activates an acceleration engine component through an accelerator access request signal sent by an inter-stage register reg3; at the moment, the operation execution component is in a bypass state, access responses of the operation execution component and the accelerator enter the multiplexer MUX1, and themultiplexer MUX1 selects a corresponding result under the action of an acceleration instruction identification signal and sends the result to the inter-stage register reg4. The assembly line tight coupling accelerator interface structure has extremely high universality and is suitable for most processor systems.

The invention relates to the technical field of ceramic materials, in particular to boron carbide-based composite ceramic and a preparation method and device thereof. The boron carbide-based multiphase ceramic with a gradient function is obtained by adjusting components (taking a photosensitive resin system with low ash content and a photoinitiator as carriers) and subsequent pulping, molding andpost-treatment steps (adopting a three-time glue discharging technology, strengthening a degreasing and glue discharging process and controlling the carbon content in a sintered body) so that the compatibility of material specificity is realized, and maximization of material functions is achieved; meanwhile, simple spatial linear distribution is realized to meet the requirements of various workingconditions. The 3D printing device is based on a photocuring molding technology (SLA), near-net-shape molding is achieved, individuation is high, three-gradient feeding is achieved through the threeslurry barrels, and therefore the boron carbide-based multiphase ceramic of a three-layer structure is prepared.

The invention discloses an automatic constructing system designed by electronic circuits, including: memory modules and automatic constructing module. It also discloses an automatic method, including: Step 1 during the pre-determined time, according to the pre-determined processing project information, obtaining the documents corresponding to the pre-saved electronic circuit design, Step 2 sending the documents to the corresponding processing module for operation according to the items information of electronic circuits; Step 3 sending the result report returned from the processing module to the corresponding electronic circuit terminal. The invention realizes the automatic processing on electronic circuit design, effectively improving the quality, shortening the development cycle, and reducing manpower costs.

The invention is applicable to the technical field of vehicle gear shift devices, and discloses a monostable electronic gear shift device and a vehicle having the gear shift device. The monostable electronic gear shift device comprises a shift lever component, a shell component, a gear block component and a gear signal sensing component; the shift lever component comprises a shift lever rotatablyconnected to the shell component; the gear block component is arranged inside a shell; the gear block component is provided with a steady-state position and a transient position; the gear signal sensing component is respectively connected to the shift lever component and the shell component; the gear block component comprises a silencing guide structure; and the lower end of the shift lever component abuts against the silencing guide structure. The vehicle has the above monostable electronic gear shift device. According to the monostable electronic gear shift device and the vehicle having thegear shift device provided by the invention, by simplifying the structural arrangement of a shifter, the size of parts can be miniaturized, the number of the parts is reduced, the feasibility of quality control is improved, and the user experience is good.

The invention relates to a low-speed two-axis linkage type wall type planar protection cover device. The low-speed two-axis linkage type wall type planar protection cover device is arranged on a machine tool main body casting and comprises a largest section fixing frame, a sliding layer, scrap scraping strips, a guide strip and a damping pad, the largest section fixing frame is connected and fixedon a machine tool main body casting, the sliding layer is arranged on the inner side of the largest section fixing frame, the scrap scraping strips are arranged on the inner side of the largest section fixing frame and the inner side edge of the sliding layer, the guide strip is arranged inside the sliding layer, and the damping pad is arranged on the edge of the sliding layer. According to the low-speed two-axis linkage type wall type planar protection cover device, the defects that in the case of an existing protection cover, the design period is relatively long, and the mounting requirement is relatively high are overcome, and the low-speed two-axis linkage type wall type planar protection cover device is provided; the protection cover is of an integral linkage structure, the protection effect is better, moreover, installation is facilitated, and equipment maintenance is convenient and fast; the protection function of the operation of a square-shaped region of moving parts such asa main shaft of a machine tool can be realized; and the design and development period of the wall-type protection cover can be effectively shortened.