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30results about How to "Many control parameters" patented technology

Device for operating gas in vacuum or low-pressure environment and for observation of the operation

A device for operating gas in the vacuum or low-pressure environment and for observation of the operation includes a housing. The housing has a thinner part formed at a side thereof, and at least one spacer mounted therein for partitioning off its inside into a gas chamber and at least one buffer chamber outside the gas chamber. The gas chamber has two inner apertures provided on the spacers above and below the gas chamber. The housing has two outer apertures provided respectively on a top side thereof and a bottom side thereof. All of the inner and outer apertures are coaxial with one another and located on the thinner part. The housing has a pumping port for communication with the buffer chamber, and a gas inlet for communication with the gas chamber.
Owner:CONTREL TECH CO LTD

Short-distance or vertical take-off and landing aircraft with distribution type power system

PendingCN109911194ALoad Space OptimizationReasonable load spaceAircraft componentsAll-wing aircraftFlight vehicleControl theory
The invention discloses a short-distance or vertical take-off and landing aircraft which mainly comprises a lifting body, a lifting fan system and a propelling system, wherein the lifting fan system and the propelling system form a distribution type power system. According to the lifting fan system, force in a vertical and / or horizontal direction can be provided, and the size and / or the directionof the force can be adjusted; according to the propelling system, force in the vertical and / or horizontal direction can be also provided, and the size and / or the direction of the force can also be adjusted. When the aircraft takes off or lands down, lifting force is mainly provided by the fan system and / or the propelling system. Along with increase of the speed of the aircraft, the lifting force provided by the lifting body is increased, and the lifting force provided by the lifting fan system and the propelling system is reduced. At a horizontal flying state, the inlet and the outlet of the lifting fan can be closed, then the flying resistance can be reduced, and the lifting force can be increased. The aircraft has the advantages that requirements of the aircraft on take-off and landing fields can be lowered, the aircraft is high in horizontal flying efficiency, and the aircraft is good in controllability and reliability.
Owner:周雯韵

Device for operating gas in vacuum or low-pressure environment and for observation of the operation

A device for operating gas in the vacuum or low-pressure environment and for observation of the operation includes a housing. The housing has a thinner part formed at a side thereof, and at least one spacer mounted therein for partitioning off its inside into a gas chamber and at least one buffer chamber outside the gas chamber. The gas chamber has two inner apertures provided on the spacers above and below the gas chamber. The housing has two outer apertures provided respectively on a top side thereof and a bottom side thereof. All of the inner and outer apertures are coaxial with one another and located on the thinner part. The housing has a pumping port for communication with the buffer chamber, and a gas inlet for communication with the gas chamber.
Owner:CONTREL TECH CO LTD

Ultrathin prepreg and preparation method thereof

ActiveCN106903909AStable quality controlSolve technical problems that are difficult to prepareComposite laminatesLarge size
The invention provides a preparation method of ultrathin prepreg. The preparation method of the ultrathin prepreg comprises the steps of preparation of a fiber layer, preparation of a resin layer, preparation of the ultrathin prepreg and the like. According to the preparation method of the ultrathin prepreg, technological control of each step is researched, and the high-quality large-size ultrathin prepreg can be prepared; and in addition, the prepared prepreg has the advantages of being good in appearance quality, excellent in performance, low in production cost and the like. The invention further provides the ultrathin prepreg prepared through the preparation method. Composite laminate made of the ultrathin prepreg is excellent in mechanical property.
Owner:BEIJING ONLYTOP HIGH TECH MATERIALS

Automobile chassis domain control sensor architecture and dynamic state fusion calculation method

InactiveCN111469623AGet speed parameterGet the vertical jerk acceleration parameterResilient suspensionsAutomatic controlWheel speed sensor
The invention discloses an automobile chassis domain control sensor architecture and dynamic state fusion calculation method, which comprises a chassis, wherein the chassis is provided with a suspension, a wheel speed sensor, a vertical acceleration sensor and a suspension displacement sensor, wheels arranged on the suspension, the wheel speed sensor, the vertical acceleration sensor and the suspension displacement sensor form a set of wheel assembly, and four sets of wheel assemblies are arranged on the chassis, namely, a left front wheel assembly, a left rear wheel assembly, a right front wheel assembly and a right rear wheel assembly. According to the invention, the wheel speed sensor, the vertical acceleration sensor, the suspension displacement sensor and the like are arranged for obtaining rotating speed parameters and vertical bounce acceleration parameters of the wheels, relative position change parameters of the wheels relative to chassis position change and the like. According to the invention, the running state of the wheels can be comprehensively acquired through the sensors, so that more comprehensive control parameters are provided for automatic control of the vehicle, and the calculation precision of the automobile dynamic state is greatly improved.
Owner:TSINGHUA UNIV

Self-adaptive cruise driving method and equipment

The invention aims to provide a self-adaptive cruise driving method and equipment, and the method comprises the steps: collecting the historical driving data of a driver for a vehicle, and building a first corresponding relation between each current vehicle speed corresponding to the driving habit of each driver and a standard vehicle following time interval based on the historical driving data of the vehicle; based on the historical driving data of the vehicle, establishing a second corresponding relation between each vehicle speed parameter and the vehicle speed change parameter, and based on the first corresponding relation and the second corresponding relation, subsequently obtaining the vehicle speed change parameter conforming to the driving habit of each driver; therefore, the subsequent control of the vehicle driving is more in line with the personalized driving demand of the driver, and the self-definition of the vehicle speed change parameter of the adaptive cruise system is realized. Meanwhile, control parameters can be automatically adjusted according to weather conditions. The control parameters of the self-adaptive cruise control system can be diversified, the driver can define the control style by himself / herself, and meanwhile the parameters can be adjusted according to weather and environment.
Owner:ZHIJI AUTOMOTIVE TECH CO LTD

Novel high-efficient energy-saving salt granulating process

InactiveCN101811009AIncrease extrusion bulk densityHigh strengthGranulation by pressingWater contentManufacturing efficiency
The invention discloses a novel high-efficient energy-saving salt granulating process. The process comprises the following steps of: A, preparing or selecting raw material salt, namely adding water into refined dry salt by adopting a watering system and uniformly mixing the mixture serving as the raw material salt, or selecting wet salt with the water content of below 2.5 percent; B, secondarily granulating the raw material salt obtained in the step A by using two rollers to prepare a semi-finished product; C, stabilizing and screening the semi-finished product which is subjected to double-roller granulating; and D, packaging qualified products; returning unqualified products to the watering system for re-granulating process through a returning system. The process solves the problems of insufficient product quality of granulated salt in the granulated salt industry, such as lower strength, irregular and nonuniform granules and the like, solves the problems of lower molding rate of the granulated salt products, lower energy generation and higher insufficiency of packaged powdered salt amount in production, reduces the returning rate, improves manufacture efficiency of granulation, improves the production capacity, and solves the problem that re-caking of the granulated salt affects the quality and use of the granulated salt.
Owner:自贡市轻工业设计研究院有限责任公司

Filtering effect based imaging spectrometer and high-spatial-resolution spectrum imaging method

The invention discloses a filtering effect based imaging spectrometer and a high-spatial-resolution spectrum imaging method. The imaging spectrometer comprises a prepositioned device, a filtering device, a collimation device, an array type detection chip, a control device and a data calculation and analysis system. The imaging spectrometer controls the filtering device via the control device, thedetected light intensity of the same pixel element under different control conditions is different, and is substituted into a matrix equation to calculate the spectrum, and the control device outputsmore control parameters to realize high spectral resolution; and the array type detection chip includes relatively more pixel elements, a target to be detected is divided into areas, each pixel element can serve as an independent detector to carry out spectrum measurement on different subunit areas in the imaging area to be detected, and thus, the spatial resolution of spectrum imaging is higher.Compared with a traditional imaging spectrometer, the imaging spectrum of the invention is smaller in size, lower in cost and higher in performance.
Owner:NANJING UNIV OF POSTS & TELECOMM

Diffraction effect based imaging spectrometer and high-spatial-resolution spectrum imaging method

The invention discloses a diffraction effect based imaging spectrometer and a high-spatial-resolution spectrum imaging method. The imaging spectrometer comprises a prepositioned device, a diffractiondevice, a collimation device, an array type detection chip, a control device and a data calculation and analysis system. The imaging spectrometer controls the diffraction device via the control device, the detected light intensity of the same pixel element under different control conditions is different, and is substituted into a matrix equation to calculate the spectrum, and the control device outputs more control parameters to realize high spectral resolution; and the array type detection chip includes relatively more pixel elements, a target to be detected is divided into areas, each pixelelement can serve as an independent detector to carry out spectrum measurement on different subunit areas in the imaging area to be detected, and thus, the spatial resolution of spectrum imaging is higher. Compared with a traditional imaging spectrometer, the imaging spectrum of the invention is smaller in size, lower in cost and higher in performance.
Owner:NANJING UNIV OF POSTS & TELECOMM

Vehicle front wheel rotation tracking system and algorithm thereof

The invention provides a vehicle front wheel rotation tracking system. The system comprises a main single-axis gyro, a subsidiary single-axis gyro, a GNSS receiver and a CPU processor, the main single-axis gyro is used for measuring the rotational angular velocity of a vehicle main body, the subsidiary single-axis gyro is used for measuring the angular velocity of a front wheel supporting position, the GNSS receiver is used for acquiring the forward velocity of a vehicle in real time, the CPU processor is used for acquiring and synchronizing the observation angular velocities and the GNSS velocities of the main single-axis gyro and the subsidiary single gyro and running a vehicle front wheel rotation tracking algorithm. The system replaces a conventional mechanical angle sensor having thedisadvantages of needing of a mounting bracket, zero calibration and easy wearing, and provides the front wheel rotation angle and angular velocity for automatic driving and control of agricultural machines, engineering vehicles and other wheeled vehicles.
Owner:NANJING TIANCHENLIDA ELECTRONICS TECH CO LTD

Four-channel ultra-high-speed bidirectional OTDM secret communication system

The invention discloses a four-channel ultra-high-speed bidirectional OTDM secret communication system, which comprises two optical fiber generation and wave division modules, two multiplexing delay modulation modules and two optical fiber beam splitting modulation modules. According to the embodiment of the invention, external light injection is carried out on the two spinning VCSELs, chaotic synchronization between the two spinning VCSELs is realized, and asymmetry of the two spinning VCSELs is caused by uneven propagation delay, so that the asymmetry is eliminated to a great extent by injecting elliptically polarized light into the two spinning VCSELs. By further optimizing parameters, high-quality in-phase and anti-phase lead / lag chaotic synchronization is realized, and four-channel ultra-high-speed bidirectional OTDM secret communication is realized.
Owner:WUYI UNIV

Key generation method based on position uniqueness information

The invention provides a key generation method based on position uniqueness information, which is improved on the basis of a hash function, and when the hash function fills input information, a chaotic sequence is introduced, an MD buffer area is initialized, and messages are processed by taking groups as units. The information filled each time can be randomly changed along with the change of the input positioning information, so that the defect that a hash function is easily attacked by a dictionary is effectively avoided; meanwhile, a plurality of control parameters are introduced, the change space of a key is increased, and the security of a key generation algorithm and the randomness of the generated key are improved; according to the method, the structure of the MD5 algorithm is not changed too much, so that the properties of irreversibility, initial value sensitivity and the like of the original MD5 algorithm still exist, the complexity of the improved algorithm is not obviously improved, and the operation time is relatively short.
Owner:HARBIN INST OF TECH

Marine environment vertical gradient simulation experiment device

PendingCN114674981AIncrease or decrease the quantitySolve the problem of researching simulation experiment equipmentSimultaneous control of multiple variablesMaterial analysisTemperature controlEngineering
A marine environment vertical gradient simulation experiment device comprises a base, a barrel and a top cover, the barrel is composed of a series of layer blocks, and each layer block is provided with an independent temperature control module, an independent illumination control module, an independent substance concentration control module and an independent environment monitoring module. Through independent control of the temperature, illumination and substance concentration of each layer block, the vertical profile gradient change of the temperature, illumination and substance concentration of the marine environment can be simulated, and an unprecedented simulation experiment device is provided for marine ecosystem research under climate change. The method has good expansibility and applicability, the simulation precision and the construction cost of the vertical section can be controlled by increasing and decreasing the number of the layer blocks, and the requirements of different experiment purposes are met.
Owner:XIAMEN UNIV

Scattering effect based imaging spectrometer and high-spatial-resolution spectrum imaging method

The invention discloses a scattering effect based imaging spectrometer and a high-spatial-resolution spectrum imaging method. The imaging spectrometer comprises a prepositioned device, a scattering device, a collimation device, an array type detection chip, a control device and a data calculation and analysis system. The imaging spectrometer controls the scattering device via the control device, the detected light intensity of the same pixel element under different control conditions is different, and is substituted into a matrix equation to calculate the spectrum, and the control device outputs more control parameters to realize high spectral resolution; and the array type detection chip includes relatively more pixel elements, a target to be detected is divided into areas, each pixel element can serve as an independent detector to carry out spectrum measurement on different subunit areas in the imaging area to be detected, and thus, the spatial resolution of spectrum imaging is higher. Compared with a traditional imaging spectrometer, the imaging spectrum of the invention is smaller in size, lower in cost and higher in performance.
Owner:NANJING UNIV OF POSTS & TELECOMM

A kind of low-grade diatom original earth purification and enrichment process

The invention discloses a low-grade raw diatomite purification and enrichment technology, which comprises the steps of firstly dissociating low-grade raw diatomite through a strong smashing machine, conveying to a rotary drum dryer, drying through hot air at the temperature of 800 DEG C, and sorting through a vibrating screen; combining one part of materials separated from ore fragments and supplemented hot air at the temperature of 350 DEG C to allow the mixture to enter a drying tower for drying; mixing the other part with dried materials directly discharged from the drying tower and the supplemented hot air, conveying the mixture through a pneumatic conveying pulverizer to a two-stage classifier for classification for two times, passing materials discharged from the upper part of the classifier through a 1<#> adjustable cyclone separator, and conveying the materials to a purified diatomite storage silo. According to the low-grade raw diatomite purification and enrichment technology provided by the invention, a continuous drying method is adopted for purification, the hot air at the temperature of 300 to 800 DEG C is used to continuously dry, smash and sort the materials, and by use of a pneumatic conveying method, classified enrichment is performed, so the low-grade raw diatomite is converted into economic purified diatomite containing 80 to 86 percent of diatomite components.
Owner:临江市精科硅藻土设备开发有限公司

Dry sand wear testing machine and use method thereof

PendingCN114112763AAids in evaluating tribological performanceSimple structureInvestigating abrasion/wear resistanceWear testingControl engineering
The invention discloses a dry sand wear testing machine and a use method thereof, the dry sand wear testing machine comprises a sand storage tank, a sand guide nozzle communicated with the bottom of the sand storage tank, a speed controller mounted on the sand guide nozzle and used for controlling the flow rate of dry sand, and a rubber wheel, a planetary reducer and a servo motor which are positioned on one side below the sand guide nozzle and are sequentially connected, the sample clamp is positioned on the other side below the sand guide nozzle; and the power supply is electrically connected with the speed controller and the servo motor. The device is simple in structure and convenient to operate, and can better simulate the frictional wear condition in actual work without wasting mechanical equipment, so that the evaluation of the tribological performance of materials and the frictional wear performance between the materials is facilitated.
Owner:JIANGSU UNIV OF SCI & TECH

A Direct Boost Double-fed Switched Reluctance Generator Converter System

A direct-boost double-fed switched reluctance generator converter system, structurally composed of a battery, twelve switch tubes, three-phase windings, thirteen capacitors, twelve diodes, a transformer, and two inductors, each proposed The two branch windings of the phase winding are respectively excited by different excitation power sources and control modes, and obtain enhanced excitation effects. Under the self-excitation power generation structure, high voltage can be directly output, which adapts to the demand for high voltage in most occasions and reduces links. At the same time, this structure reserves a mode that is suitable for the continuous current of the phase winding current in the whole domain, which has strong adaptability, the battery is automatically charged and has high quality, and at the same time, it can feed back energy, so that the power generation system can work normally under extreme conditions on the load side and help the load side to ride through faults. Based on the above functions, the whole system realizes common ground and no power frequency transformer; the invention is applicable to the application field of all kinds of small and medium power high-speed switched reluctance generator systems with various power input and output sides as loads or power grids.
Owner:CHINA JILIANG UNIV

Control method for improving imaging quality of CMOS image sensor

The invention discloses a control method for improving the imaging quality of a CMOS image sensor, and the method comprises the steps: setting expected brightness, and carrying out the statistics of a current image brightness mean value; setting a plurality of adjustable control parameters, wherein the control parameters at least comprise exposure time, charge voltage conversion gain, PGA gain, ramp voltage and digital gain; calculating whether the current image brightness mean value is matched with the expected brightness, if so, not adjusting, and if not, executing an adjusting step; and an adjusting step: adjusting the control parameters one by one, counting a current image brightness mean value after any one control parameter is adjusted, calculating whether the current image brightness mean value is matched with expected brightness, if so, ending the adjustment of the control parameters, and if not, continuing to adjust the current parameter or other parameters, until the brightness mean value of the current image is matched with the expected brightness, so that a high-quality image with moderate brightness, relatively low noise and relatively large dynamic range is obtained.
Owner:THE 44TH INST OF CHINA ELECTRONICS TECH GROUP CORP

Ceramic piezoelectric type same-platform linear front-back reciprocating conveying vibration machine body

The invention discloses a ceramic piezoelectric type same-platform linear front-back reciprocating conveying vibration machine body which comprises a vibration machine box body, an integrally-formed machine cover is fixed to the top end of the vibration machine box body through screws, a reciprocating conveying assembly is installed on the inner side wall of the vibration machine box body, and a rotary vibration machine body is installed on the upper side of the reciprocating conveying assembly. The rotary vibration machine body comprises a main vibration seat, a front anti-vibration seat is arranged on the front side of the main vibration seat, rear anti-vibration seats are installed on the two sides of the rear end of the main vibration seat, driving seats are arranged between the rear anti-vibration seats and the front anti-vibration seats, and ceramic piezoelectric plates are fixedly installed on the driving seats, the side walls of the main vibration seat, the side walls of the front anti-vibration seats and the side walls of the rear anti-vibration seats. Precise piezoelectric ceramic is used as a vibration source, generation of static electricity is avoided, the structure of the spring piece is uniquely designed, the structure is simplified, efficiency and stability are improved, and the effects of miniaturization and high-speed conveying are well achieved.
Owner:东莞市久田精密机械科技有限公司

A method and device for adaptive cruise driving

The object of the present invention is to provide a method and device for adaptive cruise driving. By collecting the driver's historical driving data of the vehicle, each current vehicle speed and speed corresponding to each driver's driving habit can be established based on the historical driving data of the vehicle. The first corresponding relationship of the standard following time, based on the historical driving data of the vehicle, establishes the second corresponding relationship between each vehicle speed parameter and the vehicle speed change parameter, and based on the first and second corresponding relationship, the follow-up can obtain the corresponding The vehicle speed change parameters of each driver's driving habits, so that the subsequent control of the vehicle driving is more in line with the driver's individual driving needs, and the self-definition of the vehicle speed change parameters of the adaptive cruise system is realized. At the same time, the present invention can automatically adjust control parameters according to weather conditions. The invention can diversify the control parameters of the self-adaptive cruise system, the driver can define the control style by himself and adjust the parameters according to the weather and environment.
Owner:ZHIJI AUTOMOTIVE TECH CO LTD
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