33results about How to "Improve development success rate" patented technology

The present invention provides an automated design method and platform for intelligent hardware system development. The method comprises: creating various types of module resource libraries; performing demand analysis on a newly-developed product; forming a system parameter configuration table according to various requirements of the newly-developed product; importing the parameter configuration table into an automated design platform; enabling the platform to call a module resource library to perform scheme optimization; and according to the parameter configuration table, generating, by configuration, various types of documents, a circuit principle diagram, a circuit PCB layout, a hardware drive program, a mobile terminal application and a cloud server program, so as to perform debug detection. The platform is an operating platform of the method, and the platform comprises a plurality of application functional modules and module resource libraries. Powerful module resource libraries are built in the platform, and non-professional personnel can implement type selection of various types of hardware components by means of product functions and performance parameters; various types of software sub-modules and hardware sub-modules have a strong called property and high reusability, and the hardware is short in development cycle and high in development success rate; and excessive professional personnel are not required, and the research and development costs are low.

A method for determining a dual-layer top cover of a motor coach with a top-positioned gas cylinder comprises topology optimization, initial structure design, section optimization, anti-overturn stability analysis and fatigue analysis. According to the design requirement, the topology optimization design based on conditions such as bearing capability, shape, power distribution and the like is carried out, thus obtaining an initial space structure of the top cover; subsequently, the section optimization is carried out to the initial space structure and the structure improving design is carriedout so that the improved structure meets the low-order vibration performance and static performance on stiffness and strength; subsequently, the anti-overturn analysis and fatigue analysis are carriedout on the improved structure so as to ensure nonoccurrence of gas leakage problem due to damaged gas cylinder under the overturn working condition of the motor coach with top-positioned gas cylinder, ensure the fatigue durability of the structure of the whole coach, and ensure that the top cover of the motor coach with the top-positioned gas cylinder meets the low-order vibration performance, static performance on stiffness and strength and safety and durability under the overturn working condition. The method simplifies the workload, improves the success rate of product development and shortens development period.

An alternating immersion corrosion testing method for simulating the acceleration of material corrosion by natural seawater includes six parts: alternating immersion corrosion test conditions, pre-test test plate treatment, alternating immersion corrosion test, post-test sample treatment, alternating immersion corrosion rate calculation, comparison between corrosion rates in the same tidal range zone, and test report. With the natural seawater taken as an immersion medium, the large test plate alternating immersion test can be conducted. The test plate is subjected to a cyclic test in the order of firstly being immersed in the seawater, secondly being exposed to the air, and finally be immersed in the seawater. The testing method simulates and studies the law of material corroding in the tidal range zone, and evaluates the corrosion resistance and the aging resistance of the material as well as the protection effect of the protective material, thereby providing a significant technical support for designing, testing and evaluating the adaptability of the material to the marine environment, shortening the period for developing novel materials, projecting the applicable performance of novel materials in environment, increasing the success rate in developing novel materials as well as products and components thereof, and reducing the development cost.

The invention discloses a steel rail rolling method capable of shortening the development cycle of a new species. The method comprises a rolling process of a BD area and a rolling process of a universal area. The last hole pattern of the BD area is a pilot hole, and the first hole pattern of the universal area is a universal coarse rolling hole. For steel rails in a specification of 43-75kg / m, the following parameter range of the same BD area for rolling the steel rails is applied: the rail bottom width difference delta D is smaller than or equal to 15mm, the waist thickness difference delta E is smaller than or equal to 5mm, and the rail height difference delta C is smaller than or equal to 25mm. The hole pattern transition from the pilot hole to the universal coarse rolling hole meets the following requirements: the abdominal cavity widening width L is -3-+5mm; the radius difference delta R of a leg and waist connecting arc and a head and waist connecting arc is smaller than or equal to 10mm; for a leg-inside single-inclination steel rail, the difference of the leg-inside inclination of the pilot hole and the leg-inside inclination of the universal coarse rolling hole is 5-8 degrees; and for a leg-inside double-inclination steel rail, the difference of the leg-inside inclination of the pilot hole and the leg-inside inclination of the universal coarse rolling hole is 3-6 degrees. The development cycle of products can be greatly shortened, the development time of a new product can be shortened by about 2 / 3, and the development success ratio can be improved by one time, thus the method can be applied to the steel rails of a specification of 43-75kg / m.

The invention discloses a drug activity prediction method and application thereof. The method comprises the following beneficial effects: step one, targets of human on-market or under-study drugs andtreatment activity information are collected by inquiring drug target interaction database information; step two, searching for a plurality of virulence gene databases, collecting disease associationgenes, and according to activity rates of drugs corresponding to the disease association genes, different assignment values of disease association genes of different database sources are given; step three, feature attributes of the drug targets and the disease association genes are built; step four, a machine learning prediction model is constructed; step five, a model prediction result is evaluated; and step six, a drug with activity to a specific disease is predicted. According to the invention, the drug activity prediction method can be used as a GPS in the drug discovery field; disease association genes can be identified efficiently; the effective guidance is provided for prediction, research and development of active drugs; and a novel method and idea is provided for the drug discovery field in future.

The invention relates to the technical field of polymer alloy materials, and in particular relates to an anti-yellowing and low transmittance acrylonitrile-butadiene-styrene / polycarbonate alloy material and a preparation method thereof. The material is prepared from the following components in parts by weight: 55 to 69 parts of ABS resin selected from acrylonitrile-butadiene-styrene resin produced by an emulsion grafting method, 10 to 25 parts of polycarbonate, 6 to 11 parts of flexibilizer, 3 to 15 parts of light diffusion agents, 2 to 15 parts of light blocking agents, 0.5 to 2 parts of light stabilizer and 0.5 to 2 parts of processing agents, and the components are evenly mixed, sent into an internal mixer for mixing, pressed into 1 to 5-mm sheets with a film pressing machine, and then cut into pellets with a knife. The dispersion effect of the material components is good and uniform, the material has excellent low transmittance in thinner pieces, and has excellent performance of resisting yellowing when working in a high temperature environment for a long time. The yellowing-resisting and low transmittance acrylonitrile-butadiene-styrene or polycarbonate alloy material is suitable for optical components in the fields of illumination, electronic appliances, automobiles, aviation and the like.

A method for debugging and realizing services in a telecom value added service development environment comprises a process of utilizing a computer to debug a telecom value added service, during the process, an integrated development environment (IDE) module is utilized as a debug window, sends command to a debug module, controls the debug mode and the debug process, and displays the debug information which is sent back by the debug module, and the debug module realizes a specific debug function. The method integrates logic flow debugging and service function debugging into a whole through aiming at the characteristic that a service flow file is based on a component, so a plurality of debugging requirements of users are satisfied. Service logic debugging and function debugging are combined together. An embedded debugging virtual machine simulates a real operating environment, so the debugging accuracy is improved. An information control mechanism is added, so the user can accurately obtain the debug information of each node which is set by the user. Unreasonableness which occurs during the development process can be reduced, so the service development success rate is increased, and the development efficiency is improved.

The invention relates to a pesticide biological activity testing method that uses Cyclops as acting object. In slight amount vessel, the sensitivity of the sample would be used to take insecticidal activity test by Cyclops. The method is easy to operate and is suited to test biology of slight amount sample. The method could be used to test the activity of the existing variety and research the new pesticides.

The invention provides a corrosion-resistant evaluation test method for a large-diameter seamless line pipe to evaluate corrosion-resistant performances of the large-diameter seamless line pipe. A corrosion-resistant evaluation method suitable for large-diameter seamless line pipe is obtained by experimental comparison in terms of corrosive environments, presence or absence of loading force, surface roughness and the like. The corrosion-resistant evaluation test method for the large-diameter seamless line pipe has the advantages that the method can be used for detecting H2S (hydrogen sulfide) corrosion resistance of the large-diameter seamless line pipe in harsh utilization environments, whether the large-diameter seamless line pipe accords with requirements on actual corrosive environments or not can be more accurately judged by the number and the size of generated hydrogen blisters, and the method has more reference values for guiding utilization of the large-diameter seamless line pipe in projects. In addition, the corrosion-resistant evaluation test method for the large-diameter seamless line pipe is simple in test method and convenient to operate.

The invention relates to a test method for testing the resistance performance of an antifouling coating in a real sea environment. The method includes the following steps that: a cylindrical sample isprepared, and antifouling paint is applied to the treated cylindrical sample until the thickness of the antifouling paint achieves a target coating thickness; the cylindrical sample is soaked into areal sea for d1 days through the buoyant raft of a ship or a real sea resistance performance simulation test device under a condition that a navigation-immobilization ratio ranges from 1:30 to 30:1 and a condition that a speed ranges from 8 to 5 Knots, so that fouling organisms or slime can be attached to the surface of the sample, torque and surface roughness testing is performed on the socked sample; the sample is driven to rotate in seawater by the real sea resistance performance simulation test device at a speed from 8 to 50 Knots, and a turbulent state is generated on the surface of the sample; and the sample is made to rotate in the real sea for d2 days, the sum of d1 and d2 is a test period, after the sample rotates, torque and surface roughness testing is performed on the sample. With the test method of the invention adopted, the state and resistance performance change of the ship in sailing can be simulated realistically; and the comprehensive performance and effect of the resistance of the coating are evaluated by means of monitoring the change of roughness.

The invention belongs to the technical field of polymer modified materials and relates to a high-reflection low-transmittance polycarbonate material and a preparation method thereof. The material is prepared from the following ingredients in parts by weight: 70 to 76.8 parts of polycarbonate, 5 to 10 parts of flexibilizer, 3 to 10 parts of light diffusion agent, 2 to 10 parts of light blocking agent, 0.5 to 2 parts of heat stabilizer, 0.5 to 2 parts of light stabilizer and 0.2 to 1 part of lubricant. The ingredients are evenly mixed and then sent into an internal mixer to be extruded and mixed, then are compressed into 1 to 5-millimeter slices by a laminator and then are cut into a particle material by a cutter. The material has a good and uniform-phase component dispersion effect, has excellent light reflection and low light transmission in thinner work pieces and is suitable for being applied to optical components in the fields of lighting, displaying, automobiles, aviation and the like.

The invention belongs to the technical field of high molecular materials and relates to high-heat-resistant low-light-transmittance acrylonitrile-butadiene-styrene composition and a preparation method thereof. The composition is prepared from the following ingredients in parts by weight: 55 to 74 parts of acrylonitrile-butadiene-styrene resin which is chosen from emulsion grafting method production, 0 to 12 parts of acrylonitrile-styrene, 10 to 20 parts of heat-resisting agent, 3 to 15 parts of light diffusion agent, 2 to 15 parts of light blocking agent, 0.5 to 2 parts of light stabilizer and 0.5 to 2 parts of processing aid. All the ingredients are evenly mixed and then sent into an internal mixer to be extruded and mixed, are compressed into 1 to 5-millimeter slices by a laminator and then are cut into a particle material by a cutter. The material has a good and uniform-phase ingredient dispersion effect, has excellent low light transmission in thinner work pieces, further has good heat resistance and is suitable for being applied to optical components in the fields of electric appliances, automobiles, aviation and the like.

The invention provides a water pump with long service life and high sealing performance and an assembling method, and relates to the technical field of assembling of the water pump with high sealing performance. The water pump comprises a pump body support, a motor support, a motor, a coupler, a lead screw, a commutator, a piston and a cylinder body. The pump body support and the motor support arein butt joint. The motor is fixedly mounted on the motor support. The coupler is arranged in the motor support. The lead screw and an output shaft of the motor are coaxially arranged. One axial end of the lead screw stretches into the motor support and is in butt joint with the output shaft of the motor through the coupler. The piston is in butt joint with the other axial end of the lead screw through the commutator. The cylinder body sleeves the outer wall of the piston. The motor drives the lead screw to rotate through the coupler. Rotation of the lead screw is converted into axial transverse movement of the piston through the commutator. The problems that movement of a piston part of a water pump with high sealing performance is blocked, radial runout is large, the service life of thewater pump is short, and the sealing leak rate exceeds standards are solved, and the purposes that the assembling process is digitally detected, the problem about the performance of the water pump ischecked in time, the production efficiency is improved, and the development period is shortened are achieved.

The invention provides a compound preparation consisting of calcium rosuvastatin and a fenofibric acid choline salt time-selecting osmotic pump controlled release tablet and a preparation method thereof. The compound preparation structurally comprises the following components from inside to outside in sequence: a tablet chip consisting of a medicine containing layer and a boosting layer, a controlled release coating for a medicine release hole, a calcium rosuvastatin quick release layer and a protective gastric soluble thin film coating. The preparation method comprises the following steps of: (1) preparing the medicine containing layer; (2) preparing the boosting layer; (3) pressing the tablet chip; (5) coating a control release coating; (6) punching the coating tablet; (6) coating the calcium rosuvastatin quick release layer; and (7) coating the protective gastric soluble thin film coating.

The invention relates to the technical field of drug research and development, and discloses a drug development system based on artificial intelligence, which comprises a machine intelligent module, an expert intelligent module and a big data platform module, wherein the machine intelligent module is based on AIDD and CADD, and the machine intelligent module comprises a molecule creation unit, a molecule exploration unit, a molecule modification unit, a molecule evaluation unit, a molecule screening unit, a molecule synthesis unit, a molecule interaction unit and a molecule data mining unit. According to the drug development system based on artificial intelligence, based on the AI technology, starting from drug molecules, virtual drug molecules are created and explored through a computer, a big data platform is used for training AI, and molecular structures, characteristics and functions of compounds and possible toxic and side effects are found; molecule screening and structural modification are performed through a machine intelligence, so that drug molecules which are low in toxicity, safe and effective in quality and high in development value are researched and developed, the development success rate of new drugs is increased, and the development cycle of the new drugs is shortened.

The present invention provides an automated design method and platform for intelligent hardware system development. The method comprises: creating various types of module resource libraries; performing demand analysis on a newly-developed product; forming a system parameter configuration table according to various requirements of the newly-developed product; importing the parameter configuration table into an automated design platform; enabling the platform to call a module resource library to perform scheme optimization; and according to the parameter configuration table, generating, by configuration, various types of documents, a circuit principle diagram, a circuit PCB layout, a hardware drive program, a mobile terminal application and a cloud server program, so as to perform debug detection. The platform is an operating platform of the method, and the platform comprises a plurality of application functional modules and module resource libraries. Powerful module resource libraries are built in the platform, and non-professional personnel can implement type selection of various types of hardware components by means of product functions and performance parameters; various types of software sub-modules and hardware sub-modules have a strong called property and high reusability, and the hardware is short in development cycle and high in development success rate; and excessive professional personnel are not required, and the research and development costs are low.

The invention discloses a complex product development time prediction and optimization method based on a design structure matrix. The complex product development time prediction and optimization method is characterized in that for a complex product development process composed of n design activities with known average completion time and known information dependence relationship, all design activities of the complex product development process form a design activity set; a design structure matrix corresponding to a product development project is constructed, and an optimization objective function is constructed: according to the optimization objective function, the design structure matrix corresponding to the product development project is solved. The complex product development time prediction and optimization method takes a complex product development project as a research object, aims to predict and reduce product development time, performs analysis and modeling on the DSM corresponding to the product development project, identifies the first-order rework and the second-order rework in the product development project, obtains the optimal execution sequence of all design activities involved in the first-order rework and the second-order rework through optimization, and finally achieves the minimum total rework time of the product development project, so that the purposes of reducing the total product development time, reducing the total product development cost and improving the product development success rate are achieved.

The invention discloses a vacuum design method of a sealed cesium-beam tube. An ideal vacuum degree or pressure can be obtained with a low cost, and the development success rate of the cesium-beam tube is increased. Firstly, the range of the work pressure of the cesium-beam tube is obtained according to a relation curve of the cesium-beam intensity and the pressure inside the cesium-beam tube, then according to the still standing time requirement of the cesium-beam tube, the air output of the material unit time and average air output rate of the material unit area when all components of the cesium-beam tube are subjected to still standing are obtained, through the combination of the air output in the unit time of components of a cesium furnace and the air output in the unit time of components of a detector after electrification, the total air output of the cesium-beam tube in the unit time is obtained, then according to the total air output in the unit time and the range of the work pressure of the cesium-beam tube, the minimal pumping speed of a sputter ion pump is calculated, the structure of the sputter ion pump is determined, and finally a degassing technology of the cesium-beam tube is formulated according to the average air output rate of the unit area of all materials of the cesium-beam tube. The vacuum degree of the cesium-beam tube obtained thereby meets a design requirement, and the cost is low.

The invention discloses an acrylonitrile-butadiene-styrene composition for realizing spray coating flowing mark avoidance and a preparation method thereof. The composition is prepared from 82 to 97.25parts of acrylonitrile-butadiene-styrene resin, 0.5 to 2 parts of light stabilizing agents, 0.1 to 2 parts of heat stabilizing agents, 2 to 10 parts of chemical treatment agents, 0.1 to 2 parts of processing auxiliary agents and 0.05 to 2 parts of metal powder pigments. A novel idea technical route solution is creatively provided in a material aspect. A workpiece produced by the acrylonitrile-butadiene-styrene composition with the spray coating avoiding metal effect through injection molding processing has the advantages that flowing mark flaw defects of the workpieces on the appearance can be completely eliminated; the product appearance quality is greatly improved; the injection molding unqualified product rate is reduced; the considerable benefits are provided for production.

A long-life high-sealed water pump and its assembly method, relating to the technical field of high-sealed water pump assembly; pump body support, motor support, motor, shaft coupling, lead screw, commutator, piston and cylinder body; pump body support and motor support Docking; the motor is fixedly installed on the motor bracket; the coupling is set in the motor bracket; the screw is coaxially set with the output shaft of the motor; the axial end of the screw extends into the motor bracket, and is connected to the output shaft of the motor through the coupling Docking; the piston is docked with the other axial end of the lead screw through the commutator; the cylinder is set on the outer wall of the piston; the motor drives the lead screw to rotate through the coupling; the commutator converts the rotation of the lead screw into the axial direction of the piston Translational movement; the invention solves the problems of high-sealed water pump piston parts stuck in motion, large radial runout, short service life of the water pump, and excessive seal leakage rate, etc., realizes digital detection of the assembly process, timely checks the performance problems of the water pump, and improves production efficiency. Shorten the development cycle.

The invention discloses an intelligent control method for the steam quantity and the cavity temperature field of an electric steamer. An evaporation heater, an auxiliary heater and a temperature sensor are arranged in the electric steamer. The method comprises the following steps: S1, acquiring the maximum allowable use power of the evaporation heater and the target temperature and the cooking time in the current working mode; S2, starting an evaporation heater and adjusting power by adopting a PID algorithm to obtain average power; S3, operating at the actual use power and adjusting by adopting a PID algorithm, when the operation time reaches the cooking time, ending cooking, and otherwise, executing S4; and S4, judging whether the current temperature in the cavity reaches the target temperature or not, if so, returning to execute S3, otherwise, starting the auxiliary heater, adjusting and correcting the actual use power of the evaporation heater by adopting a PID algorithm, and returning to execute S3. According to the method, accurate control over the steam amount and the temperature field is considered, the water utilization rate is increased, overflow and dry burning are avoided, the experience feeling is good, the development period is short, cost is low, and universality is good.

The invention relates to a machining method of carbon-fiber composite material plate connecting holes. The machining method comprises the following steps that 1, the basic diameter of the connecting holes and the deformation amount in the hole depth direction are calculated; 2, the connecting holes are machined according to the basic diameter of the connecting holes and the deformation amount in the hole depth direction; and 3, a structural adhesive is coated on the periphery of each connecting hole and cured at room temperature. Compared with the prior art, the connection holes obtained through the machining method greatly improves the connection strength under the premise of meeting the relevant technical requirements, reduces the stress concentration in the peripheral area of the connection holes, reduces the risk of cracking or layering failure of the carbon-fiber composite material in the area and delays the time for hole peripheral layering failure, so that the connection strength of the carbon-fiber composite material parts with the connecting holes is improved, and the service life is prolonged.

The invention belongs to the technical field of polymer modified materials, and relates to a polycarbonate modified material with high reflection and low light transmittance and a preparation method thereof. The material is made of the following components by weight: 70-76.8 parts of polycarbonate, 5-10 parts of toughening agent, 3-10 parts of light diffusing agent, 2-10 parts of light blocking agent, 0.5 parts of heat stabilizer ~2 parts, 0.5~2 parts of light stabilizer, 0.2~1 part of lubricant, mixed evenly, sent to the internal mixer for extrusion and mixing, then pressed into 1-5mm thin slices with a film press, and then cut into pieces with a cutter pellets. The material components have good dispersion effect and uniform phase, and have excellent light reflectivity and low light transmittance in thinner parts, and are suitable for optical components in lighting, display, automobile, aviation and other fields.

The invention provides a multi-mode power management system suitable for SOC chips. The multi-mode power management system includes a digital circuit, an analog circuit and a converter output stage, wherein the analog circuit is connected to the digital circuit, and it includes an analog PFM control circuit, a digital PWM control circuit, a first LDO control circuit and The second LDO control circuit; the analog PFM control circuit, the digital PWM control circuit, the first LDO control circuit and the second LDO control circuit form an output drive unit for providing an output drive signal to the power output stage of the converter, so The output driving signal is used to drive the power output stage of the converter to respectively realize analog PFM switching power supply output mode, digital PWM switching power supply output mode, switching power supply topology LDO output mode and voltage output in LDO output mode.

The invention discloses an acrylonitrile-butadiene-styrene composition for solving spray-free flow marks and a preparation method thereof. The composition includes acrylonitrile-butadiene-styrene resin: 82-97.25 parts, light stabilizer : 0.5-2 parts, heat stabilizer: 0.1-2 parts, chemical treatment agent: 2-10 parts, processing aid: 0.1-2 parts, metal powder pigment: 0.05-2 parts. This invention creatively provides a solution of a new idea and technical route in terms of materials. The spray-free metal effect acrylonitrile-butadiene-styrene composition of the invention is used for parts produced by injection molding, which completely eliminates the The flow mark defects on the appearance of the parts greatly improve the appearance quality of the product, reduce the rate of defective injection molding products, and bring considerable benefits to production.

The invention discloses a drug screening method based on structural fragments, tetracyclic diterpenoid compounds and application. The method comprises the following steps: (1) fragmenting and decomposing a leading molecular structure into structural fragments, and screening out a parent nucleus structure and a polycyclic structure; (2) searching a set of compounds as an alternative raw material molecule set by taking a parent nucleus and a polycyclic structure fragment as screening conditions; and (3) selecting one or more raw material molecules, comparing the selected raw material molecules with the lead molecules, and performing functional group modification on the raw material molecules to obtain design molecules, so that the structural similarity of the design molecules and the lead molecules is higher than that of the raw material molecules and the lead molecules. According to the drug screening method based on the structural fragment, a receptor protein crystal diagram is not needed, the efficiency of drug molecule development can be improved, and the cost of drug molecule screening can be reduced. According to the present invention, oridonin (Ori) is adopted as the lead molecule, and the designed drug molecule has significant anti-inflammatory and anti-metabolic syndrome activity;

The invention discloses a vacuum design method of a sealed cesium-beam tube. An ideal vacuum degree or pressure can be obtained with a low cost, and the development success rate of the cesium-beam tube is increased. Firstly, the range of the work pressure of the cesium-beam tube is obtained according to a relation curve of the cesium-beam intensity and the pressure inside the cesium-beam tube, then according to the still standing time requirement of the cesium-beam tube, the air output of the material unit time and average air output rate of the material unit area when all components of the cesium-beam tube are subjected to still standing are obtained, through the combination of the air output in the unit time of components of a cesium furnace and the air output in the unit time of components of a detector after electrification, the total air output of the cesium-beam tube in the unit time is obtained, then according to the total air output in the unit time and the range of the work pressure of the cesium-beam tube, the minimal pumping speed of a sputter ion pump is calculated, the structure of the sputter ion pump is determined, and finally a degassing technology of the cesium-beam tube is formulated according to the average air output rate of the unit area of all materials of the cesium-beam tube. The vacuum degree of the cesium-beam tube obtained thereby meets a design requirement, and the cost is low.

The invention discloses a broadband angular vibration exciting device, which comprises a rigid base, wherein the rigid base is fixedly connected with a vibration exciter and a soft suspension; the soft suspension is fixedly connected with a square testing piece; the square testing piece is connected with the vibration exciter; an angular accelerometer is arranged on the square testing piece, and is connected with a vibration control instrument; the vibration control instrument is connected with a power amplifier; the power amplifier is connected with the vibration exciter; the vibration exciter is connected with a control computer; the vibrator control instrument is used for controlling vibration; the angular accelerometer is used for measuring and monitoring an angular vibration environment; the vibration control instrument is used for computing according to a feedback signal of the angular accelerometer to obtain an output signal; the output signal is used for driving the vibration exciter to excite the square testing piece after being amplified by using the power amplifier; and the control computer is used for monitoring and controlling the angular vibration situation in real time. The broadband angular vibration exciting device has the characteristics of high accuracy and capability of realizing angular vibration exciting on wide frequency bands.

A method for determining a dual-layer top cover of a motor coach with a top-positioned gas cylinder comprises topology optimization, initial structure design, section optimization, anti-overturn stability analysis and fatigue analysis. According to the design requirement, the topology optimization design based on conditions such as bearing capability, shape, power distribution and the like is carried out, thus obtaining an initial space structure of the top cover; subsequently, the section optimization is carried out to the initial space structure and the structure improving design is carriedout so that the improved structure meets the low-order vibration performance and static performance on stiffness and strength; subsequently, the anti-overturn analysis and fatigue analysis are carried out on the improved structure so as to ensure nonoccurrence of gas leakage problem due to damaged gas cylinder under the overturn working condition of the motor coach with top-positioned gas cylinder, ensure the fatigue durability of the structure of the whole coach, and ensure that the top cover of the motor coach with the top-positioned gas cylinder meets the low-order vibration performance, static performance on stiffness and strength and safety and durability under the overturn working condition. The method simplifies the workload, improves the success rate of product development and shortens development period.