35results about How to "Fine control" patented technology

A rifle scope has a body with a number of optical elements. An adjustment knob is rotated we connected to the body and interacts with at least one of the optical elements to provide an image shift in response to rotation of the knob. A detent mechanism interacts with the knob, and has a number of detent positions. Many of the detent positions have a first detent force, and a selected subset the detent positions have a greater second force. The selected subset of detent positions may correspond to selected major distance intervals.

First and second semiconductor switches which are activated alternately are provided between ends of a primary winding and a common potential point, wherein a DC power supply voltage is supplied to a center tap. An electric current flowing into a load is fed back to thereby subject the semiconductor switches to PWM control. Series circuits consisting of capacitors and semiconductor switches are connected between the center tap of the primary winding and the ends of the same. The semiconductor switches are activated in synchronism with the first and second semiconductor switches, thereby preventing occurrence of an anomalous high voltage, which would otherwise be caused at the time of switching operation.

The invention discloses an electric automobile and a range extender start-stop control method and device thereof. The range extender start-stop control method comprises the following steps that battery state information of a power battery is obtained; a mode switching instruction input by a user is received; working modes of an electric automobile and start and stop of a range extender are controlled according to the battery state information and the mode switching instruction, wherein the working modes of the electric automobile include a pure electric EV mode and a hybrid power HEV mode. Therefore, the start and stop of the range extender are controlled by combining the will of a driver according to the operating situation of the whole automobile, control is exquisite, the driver can perform intervention, and the experience of the driver is improved.

The invention relates to the field of urban planning, and provides an urban multi-source data-based street space quality measurement evaluation method, which comprises the following steps of: obtaining urban road network data and interest point data in a research area, and preprocessing the urban road network data and the interest point data to obtain street view sampling points; obtaining a plurality of groups of streetscape image data through streetscape sampling points; inputting each piece of streetscape image data into the trained semantic feature extraction model to obtain a streetscapesemantic element data table; constructing a measure evaluation index of the urban street space quality through a street view semantic element data table, the interest point data and the urban road network data; and obtaining the distribution rule and the distribution mode of the urban space quality through the measure evaluation index of the urban street space quality. According to the invention,the street quality is researched on the microcosmic scale, the research range is widened, research is carried out on the perspective of the urban macroscopic level, and the accuracy of street space quality measurement can be remarkably improved.

A dual loop, clock synchronization circuit for a receiver in a communication system. The circuitry uses a first loop of a digital phase lock loop for coarse synchronization to time stamps within the received data and uses a second loop for fine synchronization of a second numerically controlled oscillator.

The invention relates to the technical field of sewage treatment, and in particular relates to a sewage management platform based on sewage biochemical treatment optimization and fine aeration. The platform comprises a data receiving module, a database, a prediction module, a model building module, a model parameter setting module, a model correction module, a process model library, a plan simulation module, a decision module and a control module. The data receiving module is used to receive parameter information uploaded by each sewage treatment plant. The database is used for storing the parameter information. The prediction module is used for predicting the change trend of each state parameter of sewage. The process model library stores the process model of each sewage treatment plant.The plan simulation module is used to carry out plan simulation on each sewage treatment plant under the influence of external disturbances and generate a control plan model. The sewage management platform based on sewage biochemical treatment optimization and fine aeration can optimize process parameters, realizes fine management of sewage treatment processes, and reduces the power consumption ofthe treatment processes.

There is provided an automated electrochemical device for generating a biocidal output solution, said device comprising: a flow-through electrochemical cell comprising an anodic chamber and a cathodic chamber for electrolysing an electrolyte to generate an anolyte solution and a catholyte solution; characterised in that the device further comprises: (i) a reservoir for storing catholyte; and (ii) a hydraulic circuit for recirculating catholyte from the reservoir to the anolyte on start-up of the cell, wherein input of catholyte of a compensating strength to the cell anodic chamber, is arranged so as to optimise the cell anolyte pH to produce a stable output solution at the start of the electrolysis process.

The invention relates to a center crack control process of large-scale 42CrMo round steel with a size of 70mm or more, including converter smelting, LF+RH double refining, continuous casting, castingblank classification, rolling and round steel slow cooling. The continuous casting step uses low degree of superheat pouring, constant-speed control, and a secondary cooling water ratio of 0.50 to 0.55L/kg. The casting blank classification comprises: according to a casting blank low magnification rating result and a casting blank continuous casting process parameter, divides casting blanks into I-level casting blanks and II-level casting blank. Specifically: the I-level casting blank has a low magnification rating result of center porosity <= 2.0, central segregation <= 2.0, shrinkage cavity <= 1.0, and a continuous casting process parameter of self open and degree of superheat [delta]T <= 30 degrees centigrade. The II-level casting blank has a low magnification rating result of center porosity <= 3.0, central segregation <= 3.0, shrinkage cavity <= 1.5, and a continuous casting process parameter of self open or not, an open pouring time no more than 8 minutes and the molten steel cladburning no more than once, and degree of superheat [delta]T <= 40 degrees centigrade. The rolling uses I-level casting blank rolling. The center crack control process can eliminates the center crackof large-scale 42CrMo round steel with a size of more than 70mm.

A cooling fan controller is provided for controlling the revolving speed of a cooling fan that introduces outside air as a cooling wind to cool a fluid being cooled; in order to optimally control the revolving speed if the cooling fan in accordance with load, and to suppress noise caused by the cooling fan. The cooling fan controller includes a fluid temperature sensor 40 for sensing a temperature T_o of the fluid, an air temperature sensor 30 for sensing a temperature T_a of the air, and a control means 20 for calculating a difference between the fluid temperature T_o sensed by the fluid temperature sensor 40 and the air temperature T_a sensed by the air temperature sensor 30, and setting a target revolving speed N_f of the cooling fan in accordance with a magnitude of the calculated difference.

The invention relates to a method for acquiring dynamic maximum allowable charging discharging current of a lithium ion battery used for an electric automobile. The method comprises the following steps: a, acquiring maximum allowable charging time data at different battery charging current intervals; b, acquiring maximum allowable discharging time data at different discharging current intervals; c, timing continuous charging time at a charging current interval which contains a real-time charging current; d, timing continuous discharging time at a discharging current interval which contains a real-time discharging current; e, setting maximum allowable charging current of the battery and maximum variation amplitude of the maximum allowable discharging current; and f, acquiring the current maximum allowable charging current and the current maximum allowable discharging current. In the invention, dynamic continuous adjusting on the maximum allowable charging discharging current is realized, and vehicle dithering caused by sudden change of power performance of a vehicle can be prevented, thus charging current and discharging current of the battery are controlled more accurately, and relation between the power performance and long service life of the battery can be better balanced.

The invention uses an upper and lower sublayer in at least one magnetic layer of a laminated magnetic layer structure that includes a spacer layer that substantially decouples the magnetic layers in a magnetic recording medium. The lower sublayer has a lower boron content than the upper sublayer and a preferred embodiment is CoPtCrBTa. The upper sublayer is deposited onto the lower sublayer and is preferably CoPtCrB with a higher boron content than the lower sublayer. The composition of the lower sublayer gives it a very low moment with low intrinsic coercivity which would not be useful as a recording layer on its own. The upper sublayer is a higher moment alloy with high intrinsic coercivity. An embodiment of the invention includes a laminated magnetic layer structure which is antiferromagnetically coupled to a lower ferromagnetic layer.

The invention relates to a security defense and abnormity detection method, device and system based on an MQTT message queue. The invention belongs to the technical field of shortcut message queue application in Internet of Things. The method comprises the following steps that in preset sampling time, message data sent by a target terminal is received, the message data sent by the target terminal in one period are counted, the weighted Euclidean distance of the statistical result of the message data is calculated, whether the target terminal is an abnormal behavior terminal or not is judged by comparing the weighted Euclidean distance with a preset Euclidean distance threshold value, and the abnormal behavior terminal can be detected and obtained in time. According to the security defense method, blacklist screening, client authentication, client authorization, message issuing and abnormal detection are set in the connection process of the target terminal and the message agent, and the abnormal behavior detection method is called to safely filter the abnormal client, so that the whole message interaction process is safely and finely controlled.

The invention discloses wheat extrusion grinding equipment. The wheat extrusion grinding equipment comprises a box body, a feeding pipe is arranged on the right side of the top of the box body, a conveying motor is fixedly connected to the top of the right side of the box body, a rotating shaft of the conveying motor extends to an inner cavity of the box body and is fixedly connected with a rotating rod, and the left end of the rotating rod is movably connected with the inner wall of the box body. According to the wheat extrusion grinding equipment, the box body, the feeding pipe, the conveying motor, the rotating rod, a screw conveyor blade, a partition plate, a discharging port, a screen plate, an electric push rod, a rotating motor, a connecting rod, a grinding ball body, an extruding bin, a discharging pipe, a screen hole, a grinding box, a connecting plate, a grinding motor, a grinding roller, grinding teeth and a discharging pipe are used in a match mode, the wheat can be subjected to multiple extruding and grinding processes, so that the degree of grinding of the wheat can be greatly improved, the fineness of the wheat flour is improved, so that people can conveniently process the next step, and the working efficiency of people is improved.

The invention provides a vehicle and a control method and device of an electric power steering system of the vehicle. The electric power steering system comprises a power-assisted motor, and the control method comprises the following steps of obtaining the steering wheel angle, the vehicle speed and the rotating speed of the power-assisted motor; judging a damping compensation direction accordingto the steering wheel angle and the rotating speed of the power-assisted motor; obtaining damping compensation current according to the vehicle speed, the damping compensation direction and the rotating speed of the power-assisted motor; obtaining the steering torque of a steering wheel, and obtaining the target output current of a power-assisted motor according to the damping compensation current, the steering torque and the vehicle speed; and controlling the power-assisted motor according to the target output current. According to the control method, a damping compensation direction judgmentlink based on the rotating direction of the steering wheel is added, the control precision of the power-assisted motor can be improved, the damping compensation effect of the power steering system isguaranteed, and the driving experience of a driver is improved.

The invention provides a street lamp control method and device and a street lamp controller. The street lamp controller is connected with multiple light sources on street lamps; multiple working modes of the light sources and working parameters corresponding to the working modes are kept in the street lamp controller. The method includes: acquiring the working modes of the light sources, wherein the working modes include one or multiple of a normally-open mode, a forbidden mode, a normally-closed mode, a timing mode and a sundial mode; extracting the working parameters corresponding to the working modes; according to the working parameters, outputting control signals of the light sources to control the working status of the light sources. By the arrangement, the working status of the light sources on the street lamps can be independently controlled, the problem that the street lamps are out of control when an exterior gateway or a server fails is solved, light conditions of different roads can be regulated respectively when the light sources face to the different roads, and the street lamp control method is more scientific and sophisticated.

A motor having a sensor to detect a rotation angle that enables reduction in size and weight is provided.

The motor may include a reduction gear having a planetary gear, which is provided between a rotor and a rotation axis of the motor, a conductor pattern periodically changing in width, which is formed on a surface perpendicular to the rotation axis of the rotor, and a rotation angle detection sensor, which is provided to oppose the conductor pattern.

The embodiment of the invention provides an authentication and authorization method for electronic equipment of a voice conversation platform. The method comprises the following steps: in response tostarting of an application program in each electronic device, judging whether each electronic device is activated or not; if not, acquiring unique feature information of each electronic device, signing the device information through the product key, and sending the signed and encrypted device information to the voice dialogue platform to request activation; receiving an encrypted device key returned by the voice conversation platform; obtaining a device key after decryption, and completing authorization activation of each electronic device based on the device key; and counting the informationof all electronic devices using the voice dialogue product provided by the voice dialogue platform. The embodiment of the invention further provides an authentication and authorization system for theelectronic equipment of the voice conversation platform. According to the embodiment of the invention, the information of each device can be obtained by using device-level authentication, the maintenance direction in the later period is clear, refined management and control are realized, and the time consumed in authentication is reduced.

The invention provides a household electrical appliance control method and device, and a washing machine. The method comprises the following steps that by detecting a target operation performed by a user, when the target operation is detected, a plurality of control programs are subjected to scroll display according to the target operation, and when the target operation is detected to be stopped,the displayed control program serves as a selected target program; and according to the target program, the operation of a household electrical appliance is controlled. Due to the adoption of a mode that the control programs are subjected to the scroll display according to an operation direction of the target operation, the display and selection of the control programs can be realized, so that thenumber of the control programs is no longer limited by the display area, selectable control programs can be conveniently added, the refined household electrical appliance control is realized, and thetechnical problems that in the prior art, the control of the household electrical appliance is relatively rough and the control effect is poor are solved.

The invention discloses a turnover outer overhanging inclined column supporting system and a construction method thereof. The system comprises an overhanging main beam, a first adjustable inclined support, a cable-stayed steel wire rope, a conversion support or a second adjustable inclined support, and third adjustable inclined supports; the overhanging main beam corresponds to the position of theback side of an inclined column and is connected with a structural floor slab of a construction floor in an overhanging mode; the first adjustable inclined support is obliquely supported between theupper surface of the overhanging main beam and a back side formwork on the back side of the inclined column; the cable-stayed steel wire rope is obliquely arranged between the upper surface of the structural floor slab and the front side formwork on the front side of the inclined column in a pulled mode; the conversion support or the second adjustable inclined support is supported between the lower surface of the overhanging main beam and a lower-layer structural floor slab, and the conversion support or the second adjustable inclined support is connected with an adjacent structural column ina column holding mode through a transverse rod; and the third adjustable inclined supports are symmetrically supported between the upper surface of the structural floor slab of the construction floorand the side formworks on the two sides of the inclined column. According to the turnover outer overhanging inclined column supporting system and the construction method thereof, the supporting systemis good in stress performance, safety and stability can be achieved, the construction is easy, the mounting efficiency is high, and the problem of overhanging inclined column formwork supporting is solved.

The invention discloses an urban road waterlogging monitoring and early warning method and system, and belongs to the technical field of municipal industry flood prevention monitoring, the method comprises an intelligent command center, intelligent terminal equipment and an urban waterlogging water regimen monitoring system, the intelligent command center establishes an urban waterlogging intelligent supervision data analysis and decision-making model, and the intelligent terminal equipment and the urban waterlogging water regimen monitoring system are connected with the intelligent command center; integrating and interacting the urban inland inundation related data to form urban inland inundation monitoring big data, and displaying water regimen data of each region of a city; the intelligent terminal equipment executes operation according to the water regimen on-line monitoring data, executes judgment logic in a localized mode, and achieves water level alarm; the road barrier gate is started through the intelligent terminal equipment to realize on-site actual work control; the urban inland inundation water regimen monitoring system adopts a video monitoring camera and is used for ensuring the credibility of water regimen monitoring and the traceability of drainage management and control. The system is combined with software and hardware technologies, can effectively deal with city flood prevention monitoring and early warning, and solves the inconvenience brought to citizens by urban waterlogging and ponding.

The invention relates to an intelligent factory building management method and system based on big data, and the system comprises a security module which is used for managing and controlling the entrance and exit of a factory building, carrying out the identity authentication of a person entering and exiting the factory building, monitoring the interior of the factory building, and giving an alarm for an abnormal condition; an environment adjusting module, used for detecting and adjusting illumination parameters and temperature and humidity parameters in the plant; a dust removal module, used for carrying out dust removal operation on personnel and goods entering the workshop and carrying out continuous circulating dust removal on the interior of the workshop; a server module, used for regulating and controlling the security module, the environment regulation module and the dust removal module according to an instruction of a manager, and also used for inputting, managing and storing identity information of enterprise personnel; a security module, the environment adjusting module and the dust removal module being all in communication connection with the server module. Through overall management of the server module, intelligent and refined management and control of the environment and security of the factory building are realized, and the system has the effects of improving production efficiency and management efficiency and saving energy.

The invention discloses an energy-saving power-assisted detection, analysis and management system for a motor of electric bicycle. The system comprises an electric bicycle motor, a motor driving unit,a safety regulation and control unit and a control signal acquisition unit. The output end of the safety regulation and control unit and the output end of the control signal acquisition unit are electrically connected with the input end of the motor driving unit, and the output end of the motor driving unit is electrically connected with the input end of an electric bicycle motor. In the presentinvention, when speed regulation control is carried out on the motor according to a handle control signal and a brake signal, contrast analysis calculation is carried out by combining the current speed of the electric bicycle and the angle information of steering to determine the safe speed, so that control signals of a motor of the electric bicycle are generated by combining the speed of the electric bicycle and the angle information of steering to reasonably adjust the speed of the electric bicycle under different conditions, fine control is realized, and the riding safety is remarkably improved.

The invention provides an ATE voltage testing system and an ATE voltage testing method. The system measures an output voltage of an output board (2) through a computer (3), compares the output voltage of the output board (2) with a preset qualified voltage range, and obtains a testing result. When the testing result is that the measured output voltage of the output board (2) is not within the qualified voltage range, a control signal is transmitted to a testing tool plate (1). The testing tool plate (1) adjusts the output voltage of a to-be-tested PCBA according to the control signal according to a I2C connection line, and transmits the adjusted output voltage of the PCBA to the output board (2), thereby adjusting the output voltage of the output board (2) in the preset qualified voltage range. The system can effectively improve the ATE voltage testing qualified rate, improves the yield of PCBAs, reduces the rejection rate, also can be used for managing and controlling a more precise gamma voltage value, and guarantees that the PCBA obtains a better display effect through cooperating with a panel in the subsequent process.

The embodiment of the invention discloses a display driving method and circuit, an LED display panel and a display device. The display driving method comprises the following steps: receiving and caching a plurality of pieces of gray data; acquiring a plurality of current data; determining multiple pieces of target current data in one-to-one correspondence with the multiple pieces of gray data in the multiple pieces of current data according to the multiple pieces of cached gray data; according to the plurality of pieces of gray data, respectively controlling the starting duration of the plurality of channel current sources; and respectively controlling the magnitude of the output current of the plurality of channel current sources according to the plurality of target current data. According to the embodiment of the invention, adaptive adjustment of the channel current can be realized, so that the problem of inconsistent light emitting wavelengths of an LED display panel, especially a COB packaged LED display panel, can be solved.

The invention discloses a cooling circulation system and a control method thereof. The cooling circulation system comprises a refrigerant tank, a closed heat dissipation device and a refrigerating machine, the cooling circulation system is communicated with a refrigerant inlet and a refrigerant outlet of the process device, the control method comprises the following steps of S1, acquiring the temperature of the refrigerant in the refrigerant box, the air inlet temperature of the refrigerant inlet and the air outlet temperature at the refrigerant outlet; S2, comparing the refrigerant temperature, the air inlet temperature and the air outlet temperature, and if the air inlet temperature is smaller than the cold temperature of the refrigerant and the cold temperature is smaller than the coldoutlet temperature, executing the step S3; S3, introducing a refrigerant discharged from the refrigerant outlet into a closed heat dissipation device; S4, controlling the refrigerant discharged from the closed heat dissipation device to pass into the refrigerant box; S5, introducing the refrigerant discharged from the refrigerant box into an evaporator of the refrigerator; and S6, controlling therefrigerant discharged by the evaporator to pass into a refrigerant inlet. According to the system and the control method, the system energy consumption can be reduced, the attenuation of the performance of the refrigerating machine can be overcome to a great extent, and the refrigerating efficiency of the refrigerating machine is ensured.

The invention provides a disinfection control method and system for a smart toilet. A plurality of electronic disinfection sprayers are arranged in the toilet, the internal area of the toilet comprises an in-toilet area and an out-toilet area, and the plurality of electronic disinfection sprayers comprise first electronic disinfection sprayers distributed at toilet positions in the in-toilet areaand second electronic disinfection sprayers distributed in the out-toilet area. The disinfection control method for the smart toilet comprises the following steps: acquiring air quality data of each toilet position in an idle state; acquiring air quality data of the out-toilet area; detecting whether human body information can be collected outside the toilet to obtain a detection result; regulating and controlling the first electronic disinfection sprayers located at the toilet positions according to the air quality data of the toilet positions; and regulating and controlling the second electronic disinfection sprayers distributed in the out-toilet area according to the air quality data of the out-toilet area and the detection result. Through the technical scheme of the invention, refineddisinfection control is realized, and the disinfection efficiency is greatly improved.

The invention discloses a control method and system based on a material pile layering three-dimensional real-time model. The invention can establish a material pile layering three-dimensional real-time model, reflect morphological feature types of layers of a working surface of a material pile based on the model, and achieve furthermore a more matched and finer stacker-reclaimer equipment control mode based on the morphological feature types of the material pile.