15results about How to "Accurate control precision" patented technology

The present invention provides a sample preparation device for material detection and analysis, which is applied to the technical field of material detection and analysis. The sample preparation device for material detection and analysis comprises a quantitative mechanism (1), a grinding mechanism (2), a tablet pressing mechanism (3), a punching mechanism (4), a steel ring automatic storage and retrieval mechanism (5), a transfer mechanism (6), and a dosing mechanism (7). The quantitative mechanism (1), the grinding mechanism (2), the tablet pressing mechanism (3), the punching mechanism (4), the steel ring automatic storage and retrieval mechanism (5), the transfer mechanism (6), and the dosing mechanism (7) are all installed on a frame (8). The sample preparation device for material detection and analysis of the present invention has a simple and compact structure and high efficiency. It can complete sample preparation efficiently and with high quality. It has a high degree of automation. It can complete one sample in 6-7 minutes on average. It can also realize the simultaneous processing of multiple samples at different stages, thereby comprehensively improving the preparation efficiency.

The utility model discloses a powder feeding mechanism which comprises a servo motor, a material box, a groove-shaped roller, a discharging groove and a material blocking plate, the material box is fixedly installed above the discharging groove and communicated with the discharging groove, the groove-shaped roller is installed in the discharging groove in a rotating mode, the servo motor is arranged at one end of the groove-shaped roller, and the material blocking plate is arranged at the other end of the groove-shaped roller. The material blocking plate is connected with the lower end opening of the discharging groove in a sliding mode. According to the utility model, the material box is arranged on the blanking groove, and the material baffle is arranged below the blanking groove, so that powder can be prevented from splashing all around, and the labor intensity is reduced; the groove-shaped roller is driven by the servo motor to rotate, the discharging precision can be accurately controlled by controlling the rotating speed of the servo motor, and the product quality is improved.

The present invention discloses a wind turbine pitch control system, which relates to the technical field of wind power generation, and in particular to a wind turbine pitch control system. The device includes a pitch hydraulic system, a controller, a calibration switch, a calibration block, a grating encoder, and a three-position four-way solenoid valve. The pitch control system controls the pitch hydraulic system actuator through the three-position four-way valve to achieve pitch action. The pitch control system is also provided with a grating encoder, which is used to collect pitch rotation angle information. The grating encoder has a high density of collected rotation signals and a high collection accuracy, thereby achieving more accurate control accuracy. The calibration switch is used to determine a predetermined position to prevent abnormal conditions such as controller reset, temporary freeze, or interference between the grating encoder and the controller during signal transmission, thereby causing the absolute angle obtained by the controller to be inaccurate.

The utility model provides an internal expansion type clamp for a lathe, which relates to the technical field of clamps and comprises a lathe spindle, one side of the lathe spindle is in threaded connection with a fixing bolt, one end of the fixing bolt is in threaded connection with a conical part, one side of the conical part is abutted against one side of the lathe spindle, and a rubber expansion sleeve is arranged on the outer side of the conical part. According to the utility model, the movable rod is pulled to drive the rubber expansion sleeve to move, and the rubber expansion sleeve moves on the inclined surface of the conical part, so that the rubber expansion sleeve is outwards expanded and deformed, the outer diameter of the rubber expansion sleeve is increased, a workpiece is tightly supported, and the precision of the clamp can be accurately controlled through the close fit between the rubber expansion sleeve and the conical part; the spring is arranged outside the backward pulling screw, in the process that the rubber expansion sleeve moves on the inclined face of the conical piece, the spring is compressed, the contact resistance between the rubber expansion sleeve and the inner wall of the workpiece is increased, and the rubber expansion sleeve can prevent the pipe wall of the workpiece from deforming while tightly supporting the workpiece.

The application discloses a seismic data storage method, a reading method, a storage device and a reading device, wherein the storage method comprises the following steps: determining a precision mode used for storing seismic data according to user demand; determining metadata used for describing the seismic data according to the precision mode; wherein the metadata comprises a global scale factor, a precision level factor, a sampling point number factor and a data format factor; determining a storage format of the seismic data according to the precision mode; wherein the number of bits occupied by the mantissa of the storage format corresponding to each precision mode is different; writing the metadata into the header of a seismic data file; and writing the seismic data into a seismic trace set of the seismic data file according to the storage format. The storage method can not only reduce the consumption of storage space, but also ensure the integrity and accuracy of the seismic data within the precision requirement range.

The invention discloses an intelligent universal umbrella fatigue testing machine and a detection method thereof. The fatigue testing machine comprises a rack, comprising an opening and closing mechanism mounted in the middle of a rack; comprising a compressed umbrella rod force measuring mechanism which is installed at the upper end of a rack; comprising an opening and closing stroke measuring mechanism which is installed at the bottom end of a rack and fixedly connected with an opening and closing machine; comprising a parachute opening and closing force measuring mechanism which is installed in the middle of the rack and arranged on one side of the opening and closing mechanism. The detection method comprises an umbrella fatigue test method for a manual umbrella to be detected and an umbrella fatigue test method for an automatic umbrella to be detected. The adaptive capacity of the device to detection of various umbrellas enables the device to be wide in application range and higher in value, and driving devices for clamping an umbrella sliding sleeve, pressing an umbrella switch button, fixing an umbrella top, compressing an umbrella rod and the like all adopt a motor driving mode, so that the whole control precision of the device is more accurate, and the device is more suitable for popularization and application. The speed and the stroke are more convenient to adjust.

The application discloses an antenna and antenna cover electric performance interval analysis method based on support function summation, relates to the technical field of radar antennas, and comprises the following steps: acquiring the nominal complex excitation of each array element of the antenna and the amplitude and phase interval of the excitation of each array element; obtaining the amplitude and phase interval of the equivalent transmission coefficient of each grid; constructing a general far-field interval model about the far-field complex value of each observation direction of the antenna and the antenna cover, and obtaining the uncertain far-field contribution of each unit in each observation direction; obtaining the first far-field amplitude upper and lower bounds in each observation direction; determining the second far-field amplitude upper and lower bounds in each observation direction; constructing an error index based on the first far-field amplitude upper and lower bounds and the second far-field amplitude upper and lower bounds in each observation direction, and judging whether the second far-field amplitude upper and lower bounds meet the accuracy requirement based on the error index and a preset accuracy threshold; and if yes, outputting a directional diagram interval and an electric performance index interval. The scheme improves the analysis efficiency.

This utility model discloses a rice cooker temperature detection device, relating to the field of rice cooker temperature detection technology, including a temperature sensor, a rice cooker lid, and a rice cooker ECU. This utility model uses a temperature sensor sealed to the lid, with the sensor probe extending into the pot. After being sealed to the lid by a sealing ring, the internal temperature is not leaked out, ensuring a small error between the temperature detected by the sensor and the actual temperature inside the pot. The sensor probe is a high-precision NTC thermistor, encased in a high-efficiency stainless steel probe shell. A shell fixing plate is provided on the probe shell to fix it to the rice cooker lid, ensuring accurate positioning of the temperature sensor probe. The other end is connected to the rice cooker ECU via a wiring harness connector, feeding back the temperature detected by the sensor probe to the ECU. The ECU then instructs the thermostat to adjust the internal temperature of the rice cooker during operation, facilitating precise control of the internal temperature, improving the fluffiness and texture of the rice.

The invention provides a seven-axis hydraulic mechanical arm control system of a heliostat cleaning vehicle and a control method of the seven-axis hydraulic mechanical arm control system, relates to the technical field of mechanical arm control, and solves the problems that the operation of manually controlling heliostat cleaning equipment of a heliostat field cleaning vehicle is complicated, a seven-axis mechanical arm control system is difficult to control a mechanical arm to clean heliostats, and the adaptability is poor. According to the technical scheme, a control system is a programmable logic controller and is connected with an encoder, a safety monitoring sensor and a hydraulic system through an IO module; the seven-axis hydraulic mechanical arm is formed by assembling a plurality of linear shafts and a rotating shaft, and the encoders comprise a pull rope encoder arranged on the linear shafts of the seven-axis hydraulic mechanical arm and a rotating encoder arranged on the rotating shaft of the seven-axis hydraulic mechanical arm; the working steps include safety detection, mechanical arm limiting safety detection, track teaching, heliostat cleaning, track reproduction and real-time safety monitoring. The automatic cleaning device can assist in automatic cleaning of the heliostat, closed-loop control is achieved, operation is fast and convenient, and dependence on manpower is greatly reduced.

The invention relates to a translation type light sensing chip three-temperature sorting machine, which relates to the field of three-temperature sorting machines, and comprises a frame, one side of the top of the frame is sequentially provided with a Tray feeding module, an empty Tray module, an empty Tray module and three automatic Bin sorting modules, a high-precision feeding taking and placing module, a feeding shuttle car module, a testing head module, a discharging shuttle car module, a fixed Bin dividing module and a discharging taking and placing module are arranged on the other opposite side of the top of the frame, and an empty Tray carrying module, a camera pre-positioning module, a pre-warming module and a camera positioning module are arranged between the Tray feeding module and the feeding shuttle car module. And a refrigerating unit is arranged in the frame and below the pre-heating module. According to the invention, the use cost can be reduced, the carrying precision can be improved, the chip can be positioned, the output efficiency can be improved, a light path system required by the light sensing chip test is integrated, the fogging problem of the light source, the lens and the chip under the low-temperature condition is solved, and the accurate control of the temperature can be realized.

The utility model relates to the technical field of cloth cutting, in particular to a double-module cutting mechanism which comprises a machine frame, an electric control part, a translation assembly, a group of cutting modules and a projection imaging assembly, the electric control part is arranged above the machine frame and is respectively connected with the translation assembly, the group of cutting modules and the projection imaging assembly, the translation assembly is installed on the machine frame, and the projection imaging assembly is installed on the machine frame. The rack is provided with a sliding rail structure, the cutting modules are arranged on the rack in a sliding mode through the sliding rail structure and connected with the translation assembly respectively, and the projection imaging assembly is installed on the rack and used for assisting imaging positioning in the cutting process. According to the cloth cutting device, the cloth is cut, the cutting efficiency is further improved, meanwhile, visual positioning and projector imaging assistance are arranged, the feeding precision and the cutting position precision of the cloth can be accurately controlled, and the positioning precision of cutting is improved.

The application relates to a positioning and mounting method of a continuous casting machine casting nozzle, which comprises the following steps: S1, centering adjustment device setting; S2, positioning device setting; S3, box body mounting and adjustment; S4, substitute module mounting; S5, refractory one-time pouring; S6, nozzle plate mounting; S7, refractory secondary pouring; the application takes the positioning device as a positioning reference, aligns the long side of the cross-shaped groove in the middle of the positioning device with the transverse center line of the continuous casting machine, aligns the short side of the cross-shaped groove in the middle of the positioning device with the casting flow center line of the continuous casting machine, adjusts the horizontal position of the box body through a horizontal jackscrew device, makes the position of the box body meet the accuracy requirement of the positioning device, carries out one-time pouring layer construction and preliminary positioning of the nozzle plate through the substitute module, and then accurately controls the accuracy of the nozzle plate and the positioning device through the cross-shaped scale, so that high-precision positioning of the box body, the nozzle plate and the control line of the continuous casting machine is finally realized.

The invention relates to the field of wood-working machining, in particular to multifunctional wood-working machining equipment which comprises a round wood shaving box, the bottom of the inner side of the round wood shaving box is connected with a wood shaving conveying belt, a wood placing frame is arranged above the wood shaving conveying belt, and the two ends of the wood placing frame are fixed to the inner side face of the round wood shaving box; the bottom face of the lifting base is in telescopic transmission connection with a wood pressing column, the lifting base vertically slides on the top of the inner side of the round wood shaving box, and the inner side of the bottom of the wood pressing column is elastically and telescopically connected with two sets of symmetrical wood pressing wheels; the wood shaving driving part is fixed to the bottom end of the wood pressing column, a wood shaving cutter is arranged in the wood shaving driving part, and the wood shaving cutter horizontally slides below the middle of the wood pressing column; through cooperative work of the wood placement frame at the bottom of the inner side of the round wood shaving box and the wood shaving driving part at the bottom of the lifting seat, the surface of wood can be directly cut into a smooth surface, and wood with different thicknesses is machined into round wood shapes.

The invention belongs to the technical field of electrical and automatic control and mechanical equipment, and particularly relates to a converter feeding anti-mixing device and method.According to the converter feeding anti-mixing device and method, a control system monitors the real-time position information of a lifting pipe in the horizontal direction and the relative position information of a material distribution opening on a Gray bus according to a code reader, and the real-time position information of the lifting pipe in the horizontal direction and the relative position information of the material distribution opening on the Gray bus are obtained; the control module is used for controlling the movement of the distribution trolley and the start and stop of the lifting driving module, so that the lifting pipe is aligned with the axis of the distribution opening, and the control module is used for controlling the start and stop of the lifting driving module after the lifting pipe is aligned with the axis of the distribution opening, so that the lifting pipe is pulled out of the distribution opening after distribution is completed without influencing the movement of the distribution trolley; and it is ensured that the lifting pipe is effectively inserted into the material distribution opening before material distribution, and material mixing caused by the fact that materials fall outside the material distribution opening during discharging is avoided. Moreover, the control system controls start and stop of the feeding belt according to the position information, monitored by the position detection module, of the lifting pipe in the vertical direction, material mixing caused by the fact that the lifting pipe does not enter a material distribution opening to extract and feed materials is avoided, and meanwhile the material distribution precision is accurately controlled.

The invention provides a microwave power amplifier high-temperature aging test fixture, which is characterized in that the microwave power amplifier high-temperature aging test fixture comprises a knob type compression module, a matching circuit board and a detection control module, the knob type compression module is located at the upper half part of the fixture and is fixed on a cavity, and the cavity is fixed on a base; the matching circuit board is located in the cavity and below the to-be-tested piece; the detection control module comprises a control terminal, a temperature sensor and a heating piece, the temperature sensor is located in the cavity, the heating piece is located in the base, and the temperature sensor and the heating piece are monitored by the control terminal in real time; the knob type pressing module comprises a screw cap, a stud, a base, a cover plate, a clamping frame, a pressing block mounting plate, a pressing block and a pressing rod; the stud is fixed on the base, and the screw cap is fixed on the stud. The method can be used for high-temperature dynamic aging of the microwave power amplifier, and the shell temperature of the amplifier is accurately controlled in the aging process.