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169results about How to "Troubleshoot technical issues" patented technology

Device and method for resisting rotor disturbance of permanent-magnet synchronous motor in zero-speed or extremely-low-speed state

The invention discloses a device and a method for resisting rotor disturbance of a permanent-magnet synchronous motor in a zero-speed or extremely-low-speed state. The method comprises the following steps: a pulse blocking logic unit judges whether the permanent-magnet synchronous motor is in a state close to the zero-speed or extremely-low-speed state according to a practical speed calculated by a speed detecting unit so as to decide whether the resistance to rotor disturbance is required according to a target rotational speed/rotary moment command, if yes, the pulse blocking logic unit gives out a pulse blocking signal to a pulse duration driving unit so as to generate a result that an output signal of a space vector control unit can not drive an inversion power unit through the pulse duration driving unit, further the inversion power unit does not generate inversion voltage and the permanent-magnet synchronous motor is in a no-voltage-input state, so that rotor disturbance of the permanent-magnet synchronous motor in the zero-speed and extremely-low-speed state is certainly resisted. The device and the method provided by the invention achieve the technical purpose of rotor disturbance resistance of the permanent-magnet synchronous motor in the zero-speed or extremely-low-speed state.
Owner:HUNAN CSR TIMES ELECTRIC VEHICLE

Automatic BMC (baseboard management controller) fault solution method based on RMC (rack server management center) management

The invention discloses an automatic BMC (baseboard management controller) fault solution method based on RMC (rack server management center) management, and belongs to the field of computer performance management. The method comprises the following specific steps: (1) monitoring a running state of a BMC by an RMC, if monitoring a BMC fault, re-authenticating whether the fault occurs in the BMC state or not, and if confirming that the fault occurs in the BMC, actively finishing a BMC restarting action by the RMC, wherein a server system comprises the RMC, an IPMB (intelligent platform management bus), an intermediate node plate and the BMC; (2) after actively finishing BMC restarting by the RMC, if monitoring that the BMC runs normally by the RMC, continuously keeping a monitoring state, or otherwise, notifying the BMC fault to users and prompting that the BMC fault is solved through a hardware restarting mode by a notification system. The method is used for an RACK server, automatic judgment of a BMC fault situation and fault removal and recovery by the system are realized through the RMC, the manual operation is not required, and the demands of BMC fault judgment, removal and recovery required to be performed by the server in time are effectively met.
Owner:LANGCHAO ELECTRONIC INFORMATION IND CO LTD

CO2 mineralization method for co-producing potassium-rich solution

InactiveCN102491795AOvercoming the shortage of production resourcesTroubleshoot technical issuesCalcareous fertilisersProductsCo2 partial pressureSlurry
The invention discloses a CO2 mineralization method for co-producing potassium-rich solution, which mainly comprises the following process steps: smashing ores containing potassium feldspars into powder; placing smashed ore powder in a reactor, adding calcium chloride solution into the reactor and feeding CO2 gas into the reactor to perform mineralization reaction under the conditions of temperature of 150-350DEG C and CO2 partial pressure of no less than 1.0MPa, wherein the CO2 is mineralized to produce calcium carbonate, and the potassium feldspars are dissolved to produce solution rich in potassium ions; sending obtained slurry after complete reaction to a separation device to perform solid-liquid separation, wherein obtained solid phase is a solid body containing mineralization product calcium carbonate and obtained liquid phase is the potassium-rich solution rich in the potassium ions. The potassium-rich solution is co-produced in the CO2 mineralization process, the bottlenecks that the additional value of CO2 mineralization products by means of an existing CO2 mineralization method is low and industrialization of the CO2 mineralization technology is difficult to implement are broken through, and the problem of CO2 emission reduction is solve. Simultaneously, sufficient potassium resources are provided for potash fertilizer production, and the trouble of shortage of the potash fertilizer production resources in China is solved.
Owner:SICHUAN UNIV

Method for forming interconnecting groove and through hole and method for forming interconnecting structure

The invention relates to a method for forming an interconnecting groove and a through hole and a method for forming an interconnecting structure. The method for forming the interconnecting groove and the through hole comprises the following steps that: a substrate is provided, a dielectric layer having a copper plug is formed on the substrate, and a cap layer is formed on the copper plug; an etching stopping layer is respectively formed on the surface of the dielectric layer of the copper plug and the surface of the cap layer, and a dielectric layer is formed on the etching stopping layer; the interconnecting groove and the through hole are formed on the dielectric layer; the interconnecting groove and the through hole are cleaned by acid; and the etching stopping layer covering the surface of the cap layer is removed in a dry etching way. The interconnecting groove and the through hole are radiated by ultraviolet; the interconnecting groove and the through hole stay in an ozone gas and water vapor atmosphere; and the interconnecting groove and the through hole are cleaned by organic solvent. Due to the adoption of the method, the cap layer is free from being corroded, and the damaged dielectric layer can be repaired.
Owner:SEMICON MFG INT (SHANGHAI) CORP +1

Microcapsule humectant for cigarettes, preparation method of microcapsule humectant and application of microcapsule humectant

ActiveCN103504465AIncrease the aroma of tobaccoIncrease sweetness and moisturizationTobacco treatmentChemistrySodium triphosphate
The invention relates to the technical field of tobacco processing, in particular to a microcapsule humectant for cigarettes, a preparation method of the microcapsule humectant and application of the microcapsule humectant. The microcapsule humectant for the cigarettes comprises, by weight, 100 parts of chitosan solution with the mass concentration of 1-5%, 0.05-2 parts of emulgator sucrose ester, 10-20 parts of oil materials and 100-400 parts of sodium tripolyphosphate aqueous solution with the mass concentration of 0.5-3%, and the microcapsule humectant is prepared through emulsification and microencapsulation methods. By means of the microcapsule humectant, compositions of the microcapsule humectant are optimized, the technical problem that an existing humectant cracks under the 120-degree cut tobacco drying condition in the tobacco production process is solved in a targeted mode, the microcapsule humectant has the humectant performance and the dampproof performance, water losses or moisture absorption of cut tobaccos can be slowed down in the drying or high humidity environment, when the cigarettes are smoked, the cigarette aroma and the fresh and sweet tastes can be increased, the drying sense and stimulation are reduced, miscellaneous gas and remaining taste are improved, and quality of the cigarettes is greatly improved.
Owner:CHINA TOBACCO GUANGDONG IND +1

Power takeoff device

ActiveCN105546054AAvoid damageSolve the technical problem that the power generation speed of 8000r/min cannot be reached in specific occasionsGear lubrication/coolingToothed gearingsVehicle frameEngineering
The invention relates to a power takeoff device. The power takeoff device comprises a power taking gearbox, an input shaft, an output shaft, at least one intermediate shaft, at least two speed-increasing gear pairs and a gear shifting control mechanism. The power taking gearbox is fixed to a vehicle frame. The input shaft is rotationally arranged in the power taking gearbox and connected with an engine. The output shaft is rotationally arranged in the power taking gearbox and connected with an electric generator. The intermediate shafts are rotationally arranged in the power taking gearbox and arranged between the input shaft and the output shaft in parallel. The input shaft is sleeved with a driving gear of the first speed-increasing gear pair of the at least two speed-increasing gear pairs in a spaced mode, and driven gears are fixed to the intermediate shafts. The gear shifting control mechanism is arranged in the power taking gearbox. According to the power takeoff device, the power taking electricity generation rotating speed can reach 8000 r/min; the power takeoff device has the gear shifting function, so that a power takeoff is prevented from being damaged by maloperation gear shifting, and the phenomenon that the power takeoff is damaged due to reverse large-impact loads of the load electric generator is avoided.
Owner:SPECIAL VEHICLE TECH CENT OF HUBEI AEROSPACE TECH RES INST

Motor protection circuit and method of controlling the motor protection circuit

InactiveCN106936115AThe detection and control process is simple and fastLow costEmergency protective circuit arrangementsMotor protectionTransient voltage suppressor
The invention discloses a motor protection circuit and a method of controlling the motor protection circuit. The motor protection circuit comprises a voltage division resistor, a sampling resistor, a control chip and a field effect transistor, wherein one end of the voltage division resistor accesses the control chip, and two ends of the sampling resistor access the control chip, and the control chip is used for stabilizing a power supply voltage to be a preset voltage value when a voltage value of two ends of the voltage division resistor is detected to be greater than the preset voltage value, and/or emitting a shut-off signal when a value of a current flowing through the sampling resistor is detected to be greater than a preset current value; and a grid electrode of the field effect transistor accesses the control chip and a source electrode accesses one end of the sampling resistor and is connected, and the field effect transistor is used for carrying out shutoff according to the shut-off signal generated by the control chip. In the prior art, a power supply protection circuit depends on a heavy inductor, a capacitor, a fuse or a transient voltage suppressor to prevent a condition that equipment and a control circuit are damaged because a power supply voltage current is abruptly changed. By using the circuit and the method of the invention, the above technical problem is solved.
Owner:SHEN ZHEN KUANG CHI HEZHONG TECH LTD

Method for providing special car carrying

The invention relates to the field of taxi system, and solves the technical problem that in the prior art, in order to limit city car capacity within a certain range, traveling of users are inconvenient. A method for providing special car carrying includes the steps that a taxi operation system detects the position of a current taxi; the information that the current taxi carries a first user and information of a first destination where the first user is about to go are received; during the route in which the current taxi runs to the first destination, the taxi operation system detects whether the information that a second user sends a request through a mobile terminal and the second user needs to take a taxi is received or not, and a beginning place and a destination of the second user are located in the route or located on an extension cord of the route; when it is detected that the information of the second user is received, the taxi operation system sends information of the beginning place where the second user needs to get on the taxi to the mobile terminal of a taxi driver, the taxi driver is informed to pick up the second user at the beginning place, and the technical effect of bringing convenience to traveling of the users is achieved.
Owner:成都亿邻通科技有限公司

Magnetic shielding device and magnetic shielding method of earphone circuit board

The invention discloses a magnetic shielding device and a magnetic shielding method of an earphone circuit board and relates to the technical field of an active earphone. The magnetic shielding device of the earphone circuit board comprises a shielding cover which is arranged between a horn of the earphone and the circuit board. An opening end of the shielding cover is combined on the circuit board. The shielding cover is made of permeability magnetic materials. The magnetic shielding method of the earphone circuit board includes the steps: S1, providing the shielding cover which is made of permeability magnetic materials; S2, combing the opening end of the shield cover with the circuit board of the earphone. A magnetic line of force which is produced by the circuit board in the magnetic field passes the shielding cover and returns to the other end of the magnetic field so interference on an earphone horn is reduced. The magnetic shielding device and the method of an earphone circuit board solve the technical problem that the magnetic field which is produced by the circuit board in the inner portion of the earphone in the prior art produces interference on the horn. The magnetic shielding device of the earphone circuit board is simple in structure, reduces interference of an inductance element which is arranged on the circuit board in the inner portion of the earphone on the horn in a space where the earphone is limited, reduces noise of the horn and improves tone quality and quality of the earphone.
Owner:QINGDAO GOERTEK

Mobile charging station

The present invention provides a mobile charging station, comprising a mobile energy storage device, a power conversion device, a direct current charging device, a cable winch and a system control device that are disposed on a car body. The system control device controls the mobile energy storage device, the power conversion device and the direct current charging device. The power conversion device rectifies electric energy obtained from a power grid and charges the mobile energy storage device; performs inversion on electric energy output by the mobile energy storage device, and performs emergency power supplement for an electrical load on a power grid side; and performs inversion on electric energy output by the mobile energy storage device and provides inverted electric energy to the direct current charging device, and the direct current charging device performs rectification and transformation on the inverted electric energy and then charges a to-be-rescued electromobile. The cablewinch is used for placing a charging cable of the direct current charging device. According to the mobile charging station, timely power protection can be performed on an electrical load in an important department and a key position when a power failure crisis occurs on a power grid side, and further, a problem caused by low power of the electromobile in an actual driving process can be resolved.
Owner:STATE GRID ELECTRIC POWER ECONOMIC RES INST IN NORTHERN HEBEI TECH CO LTD +5

Smart garage guide device for city use

The invention discloses a smart garage guide device for city use, and belongs to the technical field of garage guide. The smart garage guide device for the city use comprises a base, an angle regulating mechanism, an installation cabinet, an intercepting dredging mechanism and a road lighting mechanism; a supporting frame is arranged at the top of the base; an LED display screen is arranged on thefront surface of the installation cabinet; the intercepting dredging mechanism comprises an intercepting arm, an intercepting frame and an adjusting component; a plurality of connecting rods which are hinged to the intercepting arm are arranged on the two sides of the intercepting arm; a position adjusting component is arranged on the intercepting frame; the end part of each connecting rod is hinged to the intercepting frame; and a bearing seat is arranged on the right side of the installation cabinet. The smart garage guide device for city use has the beneficial effects that the positions ofthe intercepting frame and the intercepting arm can be adjusted through the intercepting dredging mechanism, so that the intercepting length can be adjusted by the device according to the size of thegarage; moreover, a buffering effect can be achieved through an anti-collision airbag and a buffering spring; and therefore, the device is prevented from being damaged to affect normal use of the device.
Owner:台州衡力金属制品有限公司

Ari conditioner and cleaning control method thereof

The invention discloses an air conditioner and a cleaning control method thereof. When a filter screen needs to be cleaned, a filter screen drive device and a rolling brush drive device are controlled to be started, the filter screen is driven to move on a filter screen support, a rolling brush making rolling contact with the filter screen is driven to rotate, and the rolling brush can clean the filter screen with cleaning water stored in a dust collection box arranged below the rolling brush. When the end portion of the front end, in the movement direction of the filter screen, of the filter screen is about to make contact with the rolling brush, the filter screen drive device is controlled to be started, the filter screen is driven to move, the rolling brush drive device is controlled to be turned off or controlled to drive the rolling brush to rotate, the contact faces of the rolling brush and the filter screen are made to move in the same direction till the end portion of the front end, in the movement direction of the filter screen, of the filter screen is wound around the rolling brush, and therefore the rolling brush can clean the filter screen with the cleaning water in the rotating process. In the filter screen cleaning process, the filter screen does not need to be detached, the filter screen can be automatically cleaned, and use by users is more convenient.
Owner:GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
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