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32results about How to "Strong technical versatility" patented technology

Method for measuring absolute position of rotor in motor servo system

The invention discloses a method for measuring the absolute position of a rotor in a motor servo system, comprising the steps of: integrally combining the motor and a position sensor; and by utilizing position information provided by a predetermined position as well as relative position information and pitch information provided by the sensor, and recombining the position information through using a proper method so as to obtain absolute position information of the motor rotor. According to the method, a zero position indicator is not required; after outage, the absolute position of a zero position of a relative system of the motor rotor can be obtained through the predetermined position of the motor rotor; compared with a coarse / fine coupling double-speed rotary transformer system, the high-precision absolute position information is obtained by using the simple and reliable sensor, so that the structure of the integrated high-performance servo motor is simplified and decreased, then the structure is more compact and the volume is decreased; and at the same time, a signal processing circuit and coarse / fine coupling operation are decreased, so that compared with the coarse / fine coupling double-speed rotary transformer system, the performance-price ratio is improved and the complexity level is reduced.
Owner:BEIJING PULIMEN ELECTRO MECHANICAL HIGH TECHN CO

Power control protection industrial control protocol security test method and system

The invention discloses a power control protection industrial control protocol security test method and system. The method comprises the steps of: simulating a typical fault of a power system, and testing the correctness of a protection operation, the operation delay and the correctness of an information uploading monitoring system; using a message generation and playback technology in the environment to simulate and generate multiple clients and multiple servers to realize communication node pressure testing; generating various random fields and message playback strategies according to a setrule base, simulating fuzzy attacks of the protocol, and testing the security of the industrial control protocol; judging the communication state and the logic correctness of an application layer by analyzing structural bodies of a reply message of the device, and testing the robustness of a power control protection industrial control protocol; under the working conditions of network pressure andfuzzy attack, comprehensively assessing the correctness of a device protection function, the stability of performance and the reliability of communication. According to the method and the system, a message playback technology is irrelevant to specific protocol implementation, and the technical universality is high.
Owner:XUJI GRP +1

Heat-dissipation switch cabinet

The invention discloses a heat dissipation switch cabinet, which relates to the technical field of switch cabinets, comprising a cabinet body, a cooling fan is arranged on the top of the inner wall of the cabinet, a plurality of air holes are correspondingly provided on the upper bottom surface of the cabinet body and the cooling fan, and the middle part of the side of the inner wall of the cabinet is symmetrical There are horizontal slide rails, and baffles are arranged on the horizontal slide rails. There are multiple strip-shaped cavities inside the baffles and are connected to each other. There are a number of heat dissipation holes on the upper and lower bottom surfaces of the cavities. The pipes are connected to each other. The outer wall of the cabinet is provided with a water pump and a liquid storage bin. The water pump, the liquid storage bin and the pipe are connected in pairs to form a liquid circulation cooling system. The bottom of the cabinet is connected with a cooling plate. The temperature sensor is provided with a controller on the outer wall of the cabinet, and the temperature sensor, the water pump and the cooling fan are respectively connected with the controller. The invention adopts the heat dissipation mode combining liquid circulation cooling and heat dissipation with a heat dissipation fan, and has the characteristics of high heat dissipation efficiency, long service life, simple structure and strong technical versatility.
Owner:合肥易美特建材有限公司

Detecting method for double-curvature skin part of airplane

InactiveCN108917685ARealize the detection of the degree of pastingThere is no problem of easy detection blind spotsMeasurement devicesJet aeroplaneMeasuring instrument
A detecting method for a double-curvature skin part of an airplane comprises the steps that a detecting mould is arranged, a convex profile matched with a skin theoretical model is arranged on the detecting mould, the convex profile is a detecting datum face, datum holes are formed in the convex profile and correspond to positioning holes in the double-curvature skin part, and the machined double-curvature skin part is placed on the detecting mould to be positioned and fixed; space coordinate values of a plurality of detecting points are measured on the surface of the skin part through a measuring instrument, and a computer of the measuring instrument automatically forms a virtual model of the double-curvature skin part in a fitting mode according to the space coordinate values of all thedetecting points; and the skin theoretical model and the virtual model are positioned on the computer through the datum holes and the datum face, thus stacked assembling is completed, the normal distance from any to-be-detected point on the virtual model to the theoretical model is measured, and the normal distances between all the detected points and the theoretical model are compared, so that the attaching degree of any space point on a double-curvature skin can be detected precisely.
Owner:XIAN AIRCRAFT IND GROUP

Pneumatic hot forming-quenching method and device for ultrahigh-strength steel complex component

ActiveCN107597966AStable quenchingStable realization of rapid quenching of ultra-high-strength steelShaping toolsFurnace typesControl systemHigh pressure
The invention discloses a pneumatic hot forming-atomization quenching method and device for an ultrahigh-strength steel complex component, and belongs to the technical fields of advanced metal manufacturing and plastic forming. The method comprises the steps that firstly, a punched plate is heated until austenization is complete; secondly, the punched plate is placed in a pneumatic forming device,a mold is closed, the plate and a female mold body are completely attached by gradually increasing the air pressure, and pressure maintaining is conducted for a period of time; thirdly, high-pressureatomized gas flowing at a high speed is formed in stamping equipment by atomizing supercooled liquid drops with circulating protection gas in a matched mode through a gas circulating control system,quick and uniform quenching is conducted on the ultrahigh-strength steel plate, and the complete Martensite structure is obtained; and lastly, cutting operation, punching operation and the like are conducted. According to the method, the non-uniform quenching phenomenon generated in the ultrahigh-strength steel cooling process can be effectively solved, the service life of the mold can be prolonged, the processes can be reduced, and the product surface quality can be improved; the forming efficiency of ultrahigh-strength steel can be improved, the cost can be reduced, and the high engineeringapplication value is achieved.
Owner:NANJING INST OF TECH

Coaxial opposite rotor differential motor and new energy automobile

A coaxial opposite rotor differential motor belongs to the electromechanical technology and automobile technology field, and comprises a motor housing, a stator, and a first rotor and a second rotor which are coaxially assembled and opposed to each other. The stator, the first rotor and the second rotor are all stator and rotor structures of an asynchronous motor. Electrical parameters of the first rotor and the second rotor are the same. The stator comprises a stator magnetic core and a stator winding, the sum of effective magnetic core lengths of the first rotor and the second rotor is equalto the length of the stator magnetic core, and a magnetic field generated by the stator winding is shared by the first rotor and the second rotor; the first rotor is provided with a first output shaft, the second rotor is provided with a second output shaft, flexible and free operation is allowed between the first rotor and the second rotor, and the two rotors are axially clamped by the two end covers; when the stator winding is connected with an alternating current power supply, the three-phase rotating magnetic field in the vertical direction of the coil is axially segmented according to the electromagnetic principle, so that the first output shaft and the second output shaft face different resistance moments to achieve the differential effect.
Owner:佛山中锦微电科技有限公司

Grinder convenient for discharge

The invention provides a grinder convenient for discharge. The grinder comprises a host, a material container and a grinding assembly, wherein the grinding assembly is arranged in the material container and is driven by a driving part arranged on the host. The grinder is characterized by also comprising a discharge port on the material container and a material sweeping device arranged in the material container and used for pushing material to go out of the discharge port. Through the arrangement of the discharge port and the material sweeping device, the grinder can realize automatic discharge and the material is discharged intensively and can be collected conveniently. Through the arrangement of the material sweeping device, the material container can be cleaned up and high hygiene degree is achieved; and the material sweeping device is applicable to various grinders, has high technical generality and low production cost, and is convenient to implement.
Owner:JOYOUNG CO LTD

Differential pressure compensator of underwater hydraulic system

The invention discloses an underwater hydraulic system differential pressure compensator which is arranged in an installation cabin of a desilting robot and comprises a hydraulic oil side sealing cover, a hydraulic oil side telescopic leather bag sealing flange, a water passing side telescopic leather bag sealing flange and a base, a hydraulic oil side PC sleeve is arranged on the side wall of thehydraulic oil side telescopic leather bag sealing flange and the side wall of the hydraulic oil side sealing cover, the hydraulic oil side telescopic leather bag sealing flange is fixedly connected with the water passing side telescopic leather bag sealing flange, and a water passing side PC sleeve is arranged on the side wall of the water passing side telescopic leather bag sealing flange and the side wall of the base, sliding plungers are connected with the hydraulic oil side PC sleeve and the water passing side PC sleeve in a sliding mode, the invention provides a series of products with the random volume compensation from 2L to 16L, the pre-pressure can be changed at any time, the structure is simple, the manufacturing cost is low, the size is small, the technical universality is high, batch production can be achieved through a prefabricated grinding tool, the product quality is reliable, and the production efficiency is high, and the requirements of integration and miniaturization are achieved.
Owner:POWERCHINA XIBEI ENG +1

Hybrid power four-wheel drive configuration method for electrifying internal combustion power vehicle

The invention discloses a hybrid power four-wheel drive configuration method for electrifying a fuel vehicle. The method is characterized in that an electric differential drive system which is composed of two alternating current motors and has an electric differential and differential lock drive function is configured; when the two front wheels of the vehicle are driven by internal combustion power, the electric differential driving system is configured to provide power for the two rear wheels of the vehicle; when the two rear wheels of the vehicle are driven by internal combustion power, theelectric differential driving system is configured to provide power for the two front wheels of the vehicle; an internal combustion power vehicle is electrically driven, four-drive-force split-axle configuration is achieved through hybrid power, a mechanical differential mechanism is omitted, and differential lock and even differential rate control is achieved; the starting and accelerating performances of the vehicle are improved; performance improvement of an electric differential system in the aspects of differential, anti-skid driving, trafficability, controllability, safety, light weightand energy conservation is fully utilized, great technical breakthrough and innovation in the aspects of high-performance four-wheel drive, environmental protection, cost reduction and the like of thevehicle are achieved, and the four-wheel drive technology and market value are huge.
Owner:佛山中锦微电科技有限公司

Quasi-differential lock control system, differential rate control system and method and automobile

All windings of n three-phase alternating-current motors are connected end to end according to a motor sequence after phase splitting to obtain three edges belonging to three phases; the three edges are connected end to end to form a large triangle; the end-to-end connection points of the adjacent windings in each side are n equal division points of the side; each vertex of the large triangle is electrically connected with one n equal division point corresponding to the opposite side to form an equal division center line, two parts cut from the large triangle are equivalent to two new small triangles in electrical connection relation after the three equal division center lines are connected, and the vertexes of the small triangles coincide with the three vertexes of the large triangle; three vertexes are connected with a three-phase alternating current power supply, the motors in the small triangles are still kept in the same rotating direction when the large triangle runs, the three equal division center lines are connected to realize a quasi differential lock function among the motors, the differential function of back-load inductive voltage distribution is realized when the three equal division center lines are disconnected, and the phase sequence connection relationship is called as a neutral line theorem of the three-phase alternating current motor; and the difference rategamma can be modulated through the on-line switch conduction rate Cy.
Owner:佛山中锦微电科技有限公司

Fluororubber plate cementing, pressurizing and curing method and device

PendingCN114131940ASolve the technical difficulties of bondingEasy to operateMetal working apparatusAdhesiveMechanical engineering
The invention provides a method and a device for gluing, pressurizing and curing a fluororubber plate. The method comprises the following steps of: adhering the fluororubber plate (2) on the respective adhering surfaces of a first part and a second part to be adhered by adopting an adhesive; the first pressing plate and the second pressing plate are arranged on the two sides of the fluororubber plate (2) respectively; auxiliary holes are pre-formed in the first pressing plate and the second pressing plate; auxiliary holes are drilled in the fluororubber plate (2), the first part and the second part in a matched mode according to preset auxiliary holes, and a spring clamp (4) is arranged in each pair of auxiliary holes; after the fluororubber plate is pressurized and cured, the spring clip (4) and the pressing plate are taken down; and the auxiliary hole is plugged by adopting an adhesive. By designing and manufacturing a pressing plate consistent with a bonded curved surface in curvature change, after the fluororubber plate is bonded, the pressing plate is fixed on the fluororubber plate, then a fabrication hole is formed, and a spring clip pressurizing and curing mode is adopted through the fabrication hole, so that the technical difficulty of pressurizing and curing in the gluing process of the fluororubber plate on a multi-curved-surface complex part with a cavity structure is solved.
Owner:CHINA HELICOPTER RES & DEV INST +1

A quenching method for aerodynamic thermoforming of complex components of ultra-high-strength steel

ActiveCN107597966BStable quenchingStable realization of rapid quenching of ultra-high-strength steelShaping toolsFurnace typesControl systemProduct gas
The invention discloses a pneumatic hot forming-atomization quenching method and device for an ultrahigh-strength steel complex component, and belongs to the technical fields of advanced metal manufacturing and plastic forming. The method comprises the steps that firstly, a punched plate is heated until austenization is complete; secondly, the punched plate is placed in a pneumatic forming device,a mold is closed, the plate and a female mold body are completely attached by gradually increasing the air pressure, and pressure maintaining is conducted for a period of time; thirdly, high-pressureatomized gas flowing at a high speed is formed in stamping equipment by atomizing supercooled liquid drops with circulating protection gas in a matched mode through a gas circulating control system,quick and uniform quenching is conducted on the ultrahigh-strength steel plate, and the complete Martensite structure is obtained; and lastly, cutting operation, punching operation and the like are conducted. According to the method, the non-uniform quenching phenomenon generated in the ultrahigh-strength steel cooling process can be effectively solved, the service life of the mold can be prolonged, the processes can be reduced, and the product surface quality can be improved; the forming efficiency of ultrahigh-strength steel can be improved, the cost can be reduced, and the high engineeringapplication value is achieved.
Owner:NANJING INST OF TECH

Method for measuring absolute position of rotor in motor servo system

The invention discloses a method for measuring the absolute position of a rotor in a motor servo system, comprising the steps of: integrally combining the motor and a position sensor; and by utilizing position information provided by a predetermined position as well as relative position information and pitch information provided by the sensor, and recombining the position information through using a proper method so as to obtain absolute position information of the motor rotor. According to the method, a zero position indicator is not required; after outage, the absolute position of a zero position of a relative system of the motor rotor can be obtained through the predetermined position of the motor rotor; compared with a coarse / fine coupling double-speed rotary transformer system, the high-precision absolute position information is obtained by using the simple and reliable sensor, so that the structure of the integrated high-performance servo motor is simplified and decreased, then the structure is more compact and the volume is decreased; and at the same time, a signal processing circuit and coarse / fine coupling operation are decreased, so that compared with the coarse / fine coupling double-speed rotary transformer system, the performance-price ratio is improved and the complexity level is reduced.
Owner:BEIJING PULIMEN ELECTRO MECHANICAL HIGH TECHN CO
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