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57results about How to "Did not change the structure" patented technology

Resonant compensation topology variable magnetic coupling resonant wireless electric energy transmission device and method

The invention discloses a resonant compensation topology variable magnetic coupling resonant wireless electric energy transmission device and method. The transmission device comprises a rectification module, an emitting end voltage stabilization module, a high-frequency inversion module, an emitting end coupling resonant coil, a receiving end coupling resonant coil, a receiving end resonant circuit capacitor, a receiving end rectification module, a receiving end voltage stabilization module, a variable resonant compensation circuit module and a detection control module, wherein the input end of the variable resonant compensation circuit module is connected with the output end of the high-frequency inversion module; the output end of the variable resonant compensation circuit module is connected with the emitting end coupling resonant coil; the detection control module is used for detecting charging parameter and input parameter information, and driving the on-off of an MOS (metal oxide semiconductor) tube and the on-off of a controllable switch. At a constant current charging stage, the series / series resonant compensation topology is used; at a constant voltage charging stage, the LCC / series resonant compensation topology is used; on the premise of not changing an electric automobile side receiving end device, the unique requirements of electric automobile charging are effectively met; the efficiency and power optimization of a wireless electric energy transmission system is considered.
Owner:SHANDONG UNIV

Adversarial sample defense method based on spoofing attacker

ActiveCN110852363ADefense Gradient AttackEfficient Gradient AttackCharacter and pattern recognitionGeneration processAlgorithm
The invention discloses an adversarial sample defense method based on a spoofing attacker, and belongs to the technical field of computer image processing. According to the technical scheme, a classification system is constructed on the basis that the classification performance of an original classifier is not changed, a buffer is added into the classification system in a parallel mode, and an attacker is well cheated by constructing a classifier 2 poor in generalization performance with the original classifier; an additional detector is arranged in front of an original classifier, single-stepattacks are defended, the difficulty of the attack process is improved, and only the original classifier is adopted to classify images classified into normal labels by the detected device; a comparator or an ensemble learning block is adopted to replace a detector, better classification performance and non-gradient return characteristics are obtained, and the comparator does not bear any specificattack strategy and disturbance mode. The method has the beneficial effects that the generation process of the adversarial sample is hindered by adopting the buffer, the comparator and the like, andthe defensive performance of the classification network on the adversarial sample is improved under the condition that the classification performance of the normal sample is not influenced.
Owner:DALIAN UNIV OF TECH

Preparation method for molybdenum-antimony co-doped titanium-based stannic oxide electrocatalysis electrode

The invention discloses a preparation method for a molybdenum-antimony co-doped titanium-based stannic oxide electrocatalysis electrode, and belongs to the technical field of catalytic electrodes. The preparation method comprises: firstly using a sol-gel process for preparing the molybdenum-antimony co-doped titanium-based stannic oxide electrocatalysis electrode, concretely pretreating a titanium matrix, taking SnCl4.5H2O, Sb2O3 and (NH4)6Mo7O24 as raw materials, and preparing a sol according to the Sn:Sb:Mo atomic ratio of 100:3:1-3, employing a dipping-pulling process dip-coating technology, controlling the dipping time and the pulling speed, employing gradient-program heating sintering processing, and controlling the heat treatment temperature and the heat treatment time of each heating stage, so as to prepare the molybdenum-antimony co-doped titanium-based stannic oxide electrocatalysis electrode. The prepared electrode is relatively low in cost, uniform and dense in surface, good in stability and relatively strong in degradation capability on phenols, caprolactam, reactive black KN-B and other organic pollutants with different structures.
Owner:沈阳柏益博硕科技有限公司

Door seal and manufacturing method thereof

The invention relates to a door seal and a manufacturing method thereof. The door seal comprises a door seal part and an elastic part which are formed by co-extrusion heat fusion, wherein the elastic part is mounted on a door; one end of the door seal part is in integral seamless connection with the elastic part, and the other end of the door seal part is arranged on a door frame in a pressure welding manner; the door seal part is made of PVC; the elastic part is made of a thermoplastic elastomer material; a cavity is formed between the door seal part and the elastic part; and a magnetic stripe is arranged in the cavity. As the door seal is made of the elastomer material, the door seal and a refrigerator have excellent airtightness, and accordingly, the quality problems of seam forming, untight closure, condensation and the like of the door seal of the refrigerator are effectively reduced; no physical or chemical reaction occurs between the elastomer material and a coating on a side plate of the refrigerator, so that the problem of adhesion between the side plate of the refrigerator and the door seal is solved; as the two materials are combined through co-extrusion, the process cost and the energy consumption are low; and as the structure of the door seal is not changed, the die cost is not increased.
Owner:HEFEI HUALING CO LTD +2

Shield tunneling machine cutter with cushion device

The invention discloses a shield tunneling machine cutter with a cushion device. The shield tunneling machine cutter comprises a cutter seat fixed on a spoke of a shield tunneling machine cutter disc,and the cutter body installed on the cutter disc, the cutter is provided with a cutter blade, the side edge, close to the heading direction of the cutter, ofthe cutter blade of the cutter is rotatably connected with the cutter seat, the other side edge, the cutter blade away from the heading direction of the cutter, of the cutter and the cutter seat are provided with a gap, and a cushion device is arranged between the other side edge of the cutter and the cutter seat. According to the shield tunneling machine cutter, the cushion device is arranged in the cutter seat, after the blade of the cutter is impacted during working, the cutter can be driven to be rotated around a pin roll, a cushion spring in the cushion device is compressed, time of cutting a hard object by the blade is prolongedin the process, the cushion effect is exerted, the probability of tipping of the blade is reduced, the capability of impact resistance of the cutter is greatly promoted, and the problem that due to the damage of the cutter disc caused by the tipping of a cutter tool, excavation of a shield tunneling machine is affected is solved.
Owner:XCMG KAIGONG HEAVY IND NANJING

Method and system for determining position of magnetic field detection part of current sensor and sensor

The invention provides a method and system for determining the position of a magnetic field detection part of a current sensor, and the sensor. The method comprises the following steps: obtaining the size data of a copper bar wire; generating a plurality of simulation relative positions of the magnetic field detection part and the copper bar wire according to the size data to obtain a simulation relative position set; and traversing the simulation relative position set, carrying out simulation detection on the alternating-current frequency characteristics of the current sensor of the magnetic field detection component at the same simulation relative position and different simulation frequencies to obtain a simulation result, and taking the simulation relative position with the best alternating-current frequency characteristic in the simulation result as a setting position of the magnetic field detection component. The simulation relative position with the best alternating current frequency characteristic in the simulation result is used as the setting position of the magnetic field detection part in the current sensor, so that the influence of the skin effect on the sensitivity of the current sensor can be reduced by the obtained current sensor; and therefore, the error of the copper bar current sensor during measurement of the copper bar wire with the alternating current is reduced.
Owner:NING BO SINOMAGS ELECTRONICS TECH CO LTD

Horizontal-line multi-washing serial washing overflow structure

The invention relates to a horizontal-line multi-washing serial washing overflow structure which comprises a first washing area and a second washing area, wherein the first washing area comprises a first-level washing pool, a second-level washing pool and a third-level washing pool; the second washing area comprises a fourth-level washing pool, a fifth-level washing pool and a sixth-level washing pool; the first-level washing pool and the second-level washing pool are communicated by an overflow outlet; the second-level washing pool and the third-level washing pool are communicated by an overflow outlet; the fourth-level washing pool and the fifth-level washing pool are communicated by an overflow outlet; the fifth-level washing pool and the sixth-level washing pool are communicated by an overflow outlet; and the sixth-level washing pool is provided with an overflow inlet. The invention is characterized in that first bypass lines are connected in parallel between the fourth-level washing pool and the third-level washing pool, and the first-level washing pool is connected with a sprinkling pipe by second bypass lines. The horizontal-line multi-washing serial washing overflow structure has low renovation cost, realizes reasonable water resource utilization, and requires little change to original structure of equipment.
Owner:GULTECH WUXI ELECTRONICS CO LTD

Device and method for analyzing fiber composition content in fabrics

The invention relates to a device and a method for analyzing the fiber composition content in fabrics, which are used for observing and identifying fibers by utilizing the difference of fibers in apparent micro morphogenesis, and calculating the content of mixed fibers in the surface layer through accurately counting the number of fibers. The device comprises a multifunctional sample platform, a two-dimensional free moving system, a digital photography system, a combined oblique incidence illuminating system, a supporting system and a computer, wherein the multifunctional sample platform can clamp samples without damaging the samples, the two-dimensional free moving system drives the multifunctional sample platform to make motion, the digital photography system can be adjusted with variable magnification and has high resolution, high magnifying power and long focus, and the computer is provided with an imaging acquiring and processing system and a fiber identifying and data statistic system. The device has the characteristics of no need of manufacturing the samples, no damage to the samples in the detecting process, automatic damage-free detection for the sample, suitability for identification and content calculation of fiber in fibers, yarns, fabrics and other fiber aggregation, high detection speed, high degree of automation and convenient operation.
Owner:DONGHUA UNIV

Two-dimensional force measuring main shaft fixture based on phase-sensitive detector (PSD) principle

The invention discloses a two-dimensional force measuring main shaft fixture based on a phase-sensitive detector (PSD) principle, which belongs to the technical field of precision measurement, wherein a flexible main shaft seat comprises an upper fixed plate which is connected with a lower fixed shaft plate through a plurality of flexible stand columns, when a detected shaft is forced by external force, the detected shaft can drive a fixed shaft plate to swing because the flexible stand columns are low in rigid value, and also can drive a follow-up reflective plane mirror which is arranged on the right end surface of a flexible stand column which is arranged on the right of the flexible main shaft seat to swing simultaneously, reflective surfaces of the follow-up reflective plane mirror and a fixed reflective plane mirror are parallel and opposite to each other, laser which is launched from a semiconductor laser is sent into a photosensitive window of a one-dimensional PSD position sensor after being reflected through the reflective planes of the follow-up reflective plane mirror and the fixed reflective plane mirror for many times. The two-dimensional force measuring main shaft fixture based on the PSD principle converts force to micro displacement by utilizing a flexible hinge main shaft seat, detects force of a main shaft by further utilizing a magnifying principle of light lever and adopting PSD to measure positions, and achieves force feedback.
Owner:HARBIN INST OF TECH

Pneumatic thin film performing mechanism with built-in type anti-rotating device

The invention discloses a pneumatic thin film performing mechanism with a built-in type anti-rotating device. The performing mechanism comprises a film cover component, a membrane, a tray, an elastic element and a push bar, wherein the membrane is fixed on the inner side of the film cover component, the tray is fixed on membrane, two ends of the elastic element are respectively connected with the film cover component and the tray, one end of the push bar is fixed on the tray, and the other end of the push bar penetrates through the film cover component and is exposed outside the film cover component. The pneumatic thin film performing mechanism is further provided with the built-in type anti-rotating device. The film cover component comprises an upper film cover, a connecting pipe and a lower film cover, wherein the upper film cover, the connecting pipe and the lower film cover are sequentially connected, and an anti-rotating guide component used for limiting a moving track of the built-in type anti-rotating device is arranged on the inner side of the connecting pipe. One end of the built-in type anti-rotating device is fixedly connected to the tray, and the other end of the built-in type anti-rotating device is connected with the anti-rotating guide component. The built-in type anti-rotating device can move along a track limited by the anti-rotating guide component. The built-in type anti-rotating device is arranged in the pneumatic thin film performing mechanism, not only is travel of the pneumatic thin film performing mechanism not affected, but also the push bar can be prevented from rotating.
Owner:ZHEJIANG SUPCON FLUID TECH

Process for preparing nano-starch powder

InactiveCN101215385BThe production technology cycle is shortReduce energy consumptionWater bathsFood additive
The invention provides a process for preparing nanometer fecula powder body material, the process comprises first, adding technical-grade cornstarch in deionized water which contains a certain amount of dispersing agent to prepare homogeneous dispersion solution whose density is 5% to 15% (starch quality percentage), second, adopting high-energy ultrasonic wave to intermittently deal the solutionfor 3-5 hours under the condition of guaranteeing the system temperature which is not lower than 50 DEG C, third, placing the solution in a 40 DEG C to 50 DEG C water bath vessel to stir with a stirrer, and slowly adding acid into the solution till the density in the acid is 5% to 10% to react in constant temperature for one hour, fourth, pumping and filtering the solution which is reacted, and washing products with NaOH dilute solution to neutral, respectively washing with deionized water and absolute ethyl alcohol for several times, finally, abrading the samples in 60DEG C to 80 DEG C for 2-4 hours to get nanometer starch products. All the raw material of the process is sold in markets, raw material is wide, the reaction process can be controlled, reproduction quality is excellent, and production cost is low. The nanometer starch starches which are prepared by the invention takes ball shape, the size of the starch diameter is evenly distributed, and the major function group of original starch is not changed, and the starch is not polluted and can be used as carriers of biological medicine or food additives, thereby the invention has wide application prospect.
Owner:SOUTHWEST UNIV

Hydraulic cartridge valve

PendingCN109779995AReduced manufacturing and assembly difficultyEasy to assembleServomotor componentsEngineeringCounterbore
The invention discloses a hydraulic cartridge valve, which is installed between a control cover plate and a valve block and comprises a valve sleeve, a valve core, a sealing sleeve and a return spring, wherein the periphery of the sealing sleeve is the same cylindrical surface, and the outer diameter of the cylindrical surface is basically consistent with the maximum outer diameter of the valve sleeve; clearance shaft hole cooperation is formed between the upper part of the sealing sleeve and the counterbore of the control cover plate, and between the lower part of the sealing sleeve and the valve hole of the valve block, and cylindrical surface sealing is arranged. According to the invention, the outer peripheral surface of the sealing sleeve is coaxially matched with the valve hole of the valve block and the counterbore of the control cover plate; the outer peripheral surfaces of the sealing sleeve and the valve sleeve are basically consistent, so coaxiality requirement is not increased, and manufacturing and assembling difficulties are reduced. In the invention, a plurality of groups of sealing rings are arranged on the outer peripherical surfaces of the sealing sleeve and the valve sleeve to form cylindrical sealing, so that oil leakage can be effectively prevented, the sealing effect is improved, and the requirement on the height fit of the sealing sleeve, the valve sleeveand the valve hole is reduced while the reliability of equipment is ensured.
Owner:DING SI SHANGHAI HYDRAULIC TECH CO LTD
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