34results about How to "Verify impact" patented technology

The invention discloses a three degree-of-freedom parallel connection mechanism with the adjustable working space. The three degree-of-freedom parallel connection mechanism with the adjustable working space comprises a fixed platform (1), a movable platform (2) and three branch chains (4, 5 and 6). The three branch chains comprise first sliding rails (41, 51 and 61), first sliding blocks (42, 52 and 62), first stand columns (43, 53 and 63), first movable pairs (44, 54 and 64), first cylinder pairs (45, 55 and 65), first connection rods (46, 56 and 66) and first sphere pairs (47, 57 and 67) respectively, wherein each first sliding rail is horizontally installed on the corresponding fixed platform; each first stand column is vertically installed on the corresponding first sliding block; each first sliding block is connected with the corresponding first stand column; each first movable pair is connected with the corresponding first stand column and the corresponding first cylinder pair; one end of each first connection rod is connected with the corresponding first cylinder pair; the other end of each first connection rod is connected with the corresponding first sphere pair; each first sphere pair is installed on the corresponding movable platform. Distortion generated when the stand columns are stressed is reduced, and the three degree-of-freedom parallel connection mechanism with the adjustable working space has the advantages of being convenient to install, shortening the adjustment time, improving the efficiency, improving the precision and the like.

The invention relates to a network attack simulation method and system for a power grid information physical system. The method includes: a power system simulator simulates according to a preset power system event list, and sends simulation results to a network attack simulator through an information system simulator; a simulation attack event is established in the network attack simulator, and the simulation attack event is sent to the power system simulator through the information system simulator; and the power system simulator updates the power system event list according to the simulation attack event, and simulates according to the power system event list. According to the technical scheme provided by the invention, a network attack simulation platform is added in the built power grid information physical system environment, corresponding scale and intensity of attacks are set for different power network characteristics and information network characteristics according to different security level protection requirements, and the impact of network attacks on the power grid information physical system and the role of protection measures in the event of system instability are observed and verified.

The invention relates to an optical engine, wherein a transparent cylinder sleeve is arranged between a cylinder body and a cylinder cover of the engine, a piston is the original piston of the engine, and the length of the transparent cylinder sleeve is greater than the stroke of the engine. The invention specifically provides the optical engine which is based on rapid transformation of a multi-cylinder prototype machine and is applicable to researching the formation of a flow field, spray and mixed gas in the cylinder of the engine, in particular to researching the formation of the mixed gas of the optimized engine and a direct-injection engine in the cylinder.

The invention provides a distribution network information physical joint simulation platform and method. The platform comprises a digital test verification part and a dynamic model test verification part. The digital test verification part includes a distribution network dynamic model platform, a communication entity network and a master station physical device; the dynamic model test verificationpart includes RT-Lab, OPNET and a master station digital platform; the distribution network dynamic model platform and a distribution network digital platform form a power layer; the communication entity network and a communication digital platform form a communication layer; the master station physical device and the master station digital platform form a master station layer. The platform and the method can simulate dynamic interaction behavior of systems accurately and rapidly; digital simulation and dynamic model simulation are united and unified complement the advantages of each other; digital simulation is used for rapid modeling and parameter adjustment and the dynamic model simulation is used for simulating elements for which accurate digital modeling is impossible, and continuoussystem simulation and discrete event simulation are combined with a high-efficiency time synchronization method, so that the influence of a communication system in a distribution network on a power system in a CPS environment can be effectively verified.

The invention discloses a four-system pseudo-range positioning method based on DCB correction. The method comprises the following steps that firstly a four-system combined positioning system correctsthe satellite clock error by using the DCB data provided with an IGS website in the pseudo-range single point positioning process; a weight matrix P is determined accordingly by using the satellite elevation; quality evaluation is further performed on the observation data, and the resolving proportion is determined according to the quality of the data; and the required observation epochs are screened so as to obtain the positioning resolving result. The disadvantage of low positioning accuracy can be overcome, the positioning accuracy and stability are better than those of other combination modes under various environments, and the positioning accuracy can still be enhanced by setting of the PDOP threshold under the condition of reduction of the continuous positioning capability even in the complex environment; the influence of the hardware delay deviation on the positioning result can be verified by DCB correction of the satellite clock error, and enhancement of the single frequency data accuracy is obvious; secondly, the method has substantial meaning in further developing the application range of pseudo-range positioning and defining the DCB correction effect.

The invention relates to an energy stability domain determination method and system for a doubly-fed wind power grid-connected system, belongs to the technical field of fan grid-connected stability domain research, and solves the problem of stable operation of the wind power grid-connected system at the present stage. The method comprises the following steps: selecting a certain operation point with positive total damping energy from a stable domain parameter space as an initial search point, and injecting active power of all nodes in the doubly-fed wind power grid-connected system to form thestable domain parameter space; obtaining a basic search point set in a feasible search range by taking the initial search point as a starting point; determining unstable search points in the basic search point set; establishing a connection line between an initial search point and each unstable search point, and carrying out critical point search to obtain a critical point set; obtaining corresponding total damping energy according to the node active power injection of each critical point in the critical point set, forming an energy stability domain boundary by the total damping energy obtained by all the critical points, and obtaining the energy stability domain of the double-fed fan grid-connected system.

The invention discloses a draught fan group distributed power distribution control method considering communication delay and communication failures. The draught fan group distributed power distribution control method comprises the steps that the total output power of all draught fans and the total power required by all loads are collected in real time, and a high-performance controller is built; a distributed controller is built, the trace output power reference value of all the draught fans is obtained through the real-time output power of each draught fan and the output value of the high-performance controller, and the total power is rapidly and fairly distributed among all the draught fans; and draught fan output operates for the trace output power reference value according to the comparison of the actual wind speed and the rated wind speed through a variable rotational speed control method or a variable pitch control method. According to the draught fan group distributed power distribution control method considering the communication delay and the communication failures, the draught fan group total power is rapidly and fairly distributed among all the draught fans, and the communication delay and the communication failures are restrained.

The invention discloses an experimental grease storage tank, which comprises: S1, continuously filling inert gas into a storage tank for storing grease to reduce the concentration of oxygen in the storage tank to a first preset value; S2, mixing inert gas and to-be-stored grease, injecting into the storage tank, and when the injection height reaches a preset height, stoping injection; and S3, continuously filling inert gas into the storage tank, and when the oxygen concentration in the storage tank is reduced to a second preset value, stopping inflation. The invention further discloses an experimental grease storage system, which comprises: a storage tank, wherein the storage tank is provided with a first gas inlet pipe and an oil inlet pipe which are communicated with the inner cavity of the storage tank, and the oil inlet pipe is provided with a second gas inlet pipe with one end communicated with the oil inlet pipe; and a gas generating device used for supplying gas to the first gas inlet pipe and the second gas inlet pipe and an oil pump used for supplying oil to the oil inlet pipe. According to the invention, gas with different proportions can be simulated for controlled atmosphere storage, and theoretical basis and technical support are provided for actual controlled atmosphere storage of grease.

The invention discloses a bonding reliability testing device, especially relates to a bonding reliability testing device of simulating the transverse vibration condition, and brings forward a controlmethod according to actual conditions. The testing device comprises a framework body, a main loading platform, a bonding testing sample piece, a left/right vibration loading platform and a central controller. Vibration generated by the left/right vibration loading platform in the frame body acts on the bonding testing sample piece. The vibration loading platform is driven by a motor, and Z-direction loading of a main loading platform is followed. The control method of the testing device comprises steps of receiving instruction and feeding back information, conducting coordination control of each part of the testing device and the like. Through Z-direction following of the main loading axis and transverse vibration loading of the test piece, tension property testing under the transverse vibration condition is realized. The testing device is more suitable for performance testing in the actual service environment and can be widely applied to tension testing and fatigue testing of bondingreliability testing under transverse vibration condition.

The invention relates to application of thaspine derivative HMQ1611 in inhibition of mammary cancer. In an integral level, a mammary cancer ZR-75-30 tumor transplantation tumor model is built on the basis of a nude mouse transplantation tumor model, the inhibition effect of the thaspine derivative HMQ1611 on mammary cancer is researched, and then the mammary cancer resistance passageway of the thaspine derivative HMQ1611 is also researched, thus the inhibition effect of the thaspine derivative HMQ1611 on ER (estrogen receptor)-dependent mammary cancer is verified, and the influence of the thaspine derivative HMQ1611 on ER passageway of mammary cancer cells is also verified, thereby showing that the thaspine derivative HMQ1611 can truly inhibit mammary cancer.

The embodiment of the invention provides an automatic test system for equipment, and the system comprises a configuration command setting module which is used for generating test commands which are issued in batches and are automatically executed; a configuration command issuing module which is used for issuing the test commands to the tested devices in batches; And a monitoring parameter settingmodule which is used for adding and setting a monitoring information type and a monitoring period in the test command, realizing the input of a large number of commands in an automatic manner to verify the influence on the equipment during large configuration, facilitating the simultaneous operation of multiple users, and providing the same for all the users to use after the setting is stored.

The invention discloses a deep sea low-permeability reservoir supersonic kinetic energy fracturing ground targeting test device, relates to the technical field of oil-water well supersonic kinetic energy fracturing simulation test, and aims at improving and optimizing the design test scheme for hydraulic impact fracturing ground targeting and laying a foundation for researching a hydraulic impactfracturing fracture forming mechanism; the device specifically comprises a sleeve, the outer walls of the two ends of the sleeve are connected with an end cover and a connecting cover through fastening threads respectively, the outer wall of one side of the connecting cover is connected with an impact chamber through threads, an impact short section is arranged in the impact chamber, the outer wall of one side of the impact chamber is connected with an adapter through threads, and the outer wall of one side of the adapter is connected with a hard pipeline through threads. By arranging the sleeve, the adapter, the pump truck and other structures, the formation mechanism of the crack form generated by the cement target can be conveniently researched and analyzed, and the design test scheme of hydraulic impact fracturing ground targeting is improved and optimized, and a foundation is laid for researching the hydraulic impact fracturing fracture forming mechanism.

The invention discloses a gene detector which comprises a floating box, the floating box is cylindrical, a first photovoltaic panel is arranged on the upper side face of the floating box, a first electromagnet is fixedly arranged in the floating box, a first cavity which is in bilateral symmetry with the first electromagnet as the center is formed in the floating box, a photovoltaic device is arranged in the first cavity, the photovoltaic device can enable the buoyancy tank to increase the power of photovoltaic power generation under adaptive conditions, a second cavity downwards penetrating through the buoyancy tank is formed in the buoyancy tank, and the second cavity is located on the lower side of the first electromagnet. Fishes can be caught at regular intervals so as to measure the genes of the fishes; fish and seawater can be frozen together, so that the influence of the concentration of seawater kernel pollutants on fish genes is verified; and according to the invention, the photovoltaic panel is arranged, and the photovoltaic panel can contract under the condition of severe weather, so that the photovoltaic panel is prevented from being damaged.

The invention relates to the field of automobile part performance testing, in particular to an automobile transmission shaft bending endurance test device and method. The automobile transmission shaft bending endurance test method designed by the invention comprises the following steps of: S1, assembling an automobile transmission shaft bending endurance test device; S2, eliminating the initial unbalance amount of a to-be-tested transmission shaft; S3, installing a maximum allowable dynamic unbalance balancing weight on the automobile transmission shaft; and S4, carrying out an endurance test at the highest vehicle speed which can be reached when the whole vehicle runs on a flat road. According to the method, the initial unbalance amount of the to-be-tested transmission shaft is eliminated firstly, then the maximum allowable dynamic unbalance amount is loaded on the to-be-tested transmission shaft, and the influence of the bending torsional moment generated when the transmission shaft is in the maximum allowable dynamic unbalance amount on a transmission system is verified. The method provided by the invention is rigorous in design idea and scientific and reliable in data, and also has the characteristics of short test period and low test cost.

The invention relates to an experimental method for verifying the influence of common sub-words on the effect of an XLM translation model. The method comprises the following steps: preprocessing a corpus pre-trained by an XLM translation model; and verifying whether the performance of the XLM translation model is degraded or not: pre-training the XLM translation model by using the preprocessed corpus, initializing the translation model by using the pre-trained model, and observing the BLEU value of the new translation model. The preprocessing comprises the following steps: firstly, obtaining common sub-words in English and French sub-words and word frequencies of all the sub-words; then according to the separation proportion, randomly separating the common sub-words; reading word lists of all English and legal sub-words and storing the word lists in a dictionary for subsequently generating a division sub-word file; and initializing a dictionary by using the generated division sub-word file, and finally structuring a model corpus file by using the initialized dictionary. According to the method, the influence of the common sub-words on the BLEU value is verified, and the method is helpful for low-resource neural machine translation research of non-homologous languages.

The present invention discloses a vehicle A-pillar lower adjustment mechanism. The vehicle A-pillar lower adjustment mechanism comprises a base, a mounting post arranged on the base, and an A-pillar lower module adjusting component arranged on the mounting post. The A-pillar lower module adjusting component can be adjusted along the Y-axis direction or/and the Z-axis direction of the mounting post. According to the A-pillar lower adjustment module of the vehicle man-machine verification platform in the technical scheme of the present invention, the A-pillar is adjustable, and the position simulation of the A-pillar in the initial stage of vehicle development is achieved through adjustment, so that the ergonomics is conformed to, and the effect of the A-pillar on the field of view is verified.

The invention relates to an antenna array arbitrary beam micro-shaping tool and an implementation method, and the tool comprises: a data initialization interface system which is configured to import array antenna parameters; a beam adjustment interface system which is configured to adjust an antenna pattern and then dynamically update a corresponding weight or dynamically update the corresponding directional diagram after the weight is adjusted; and a data export system which is configured to export the weight corresponding to the adjusted directional diagram in a text format. According to the beam micro-shaping tool provided by the invention, fine tuning can be carried out on the directional diagram obtained by a shaping algorithm, the weight corresponding to the fine-tuned directional diagram is obtained, any desired directional diagram can be obtained through the fine tuning theory, the function substantially breaks through the design requirement of an excitation optimization algorithm, and great convenience is brought to antenna design workers.