37results about How to "Positioning influence" patented technology

A method for detecting printing nozzle errors in an inkjet printing machine provides a high degree of robustness in the detection of errors by printing a nozzle test pattern (14) in the inkjet printing machine (10). The test pattern (14) is then digitalized by using a camera and transmitted to a computer (30) for evaluation. There, the recorded test pattern (14) is investigated by using methods of digital image processing, such as a Fourier analysis, and evaluated in the frequency range with regard to specific anticipated printing nozzle errors. Specific printing nozzle errors can be detected especially on the basis of amplitude, phase and variance errors in the signal in the frequency range. Moreover, by using the phase error (22), it is possible to evaluate whether the two print heads (4) are disposed in an incorrect adjustment position relative to one another by calculating displacements of the phase error in transition regions (25) of two print heads (4).

This invention discloses a printing device including a PB, a load board and a vacuum module, in which, at least one open-end is set on the surface of the PB, the loading board is under the PB and set with a locating groove and multiple first holes on the surface, besides, the vacuum module is under the loading board and adsorbs the upper part of the loading board by the first holes, the printing device also includes a top cover board and utilizes multiple fixing clamps to fasten the top cover board and the loading board.

The invention discloses a positioning device and a multiple-speed chain conveying line. The positioning device comprises a top plate which is provided with a first positioning part, a second positioning part and a driving mechanism. The second positioning part is used for being connected with a tool plate and is matched with the first positioning part, so that the tool plate is positioned relativeto the top plate. The driving mechanism is connected with the top plate, and the driving mechanism is used for driving the top plate to conduct lifting motions so as to jack up the tool plate. The multiple-speed chain conveying line comprises the positioning device. According to the positioning device and the multiple-speed chain conveying line, under the condition that a multiple-speed chain isnot stopped, the stopped tool plate can be stably and accurately positioned.

This invention discloses a printing device including a PB, a load board and a vacuum module, in which, at least one open-end is set on the surface of the PB, the loading board is under the PB and set with a locating groove and multiple first holes on the surface, besides, the vacuum module is under the loading board and adsorbs the upper part of the loading board by the first holes, the printing device also includes a top cover board and utilizes multiple fixing clamps to fasten the top cover board and the loading board.

The invention provides a method for locating a memory failure point, which includes the following steps: initially locating the failure point, obtaining the initial position of the failure point; marking the area where the initial position of the failure point is located as a target area; removing the metal on the surface of the target area layer; locate the failure point again to obtain the final location of the failure point. The method for locating the failure point of the memory of the invention is simple and easy, and greatly improves the positioning accuracy of the failure point.

The invention provides a milling tool with a self-compacting function. A blade position adjusting assembly comprises an adjusting wedge block and a drive bolt. The adjusting wedge block is located in an adjusting wedge block groove. The adjusting wedge block comprises a wedge block top face, a wedge block bottom face, a wedge block left face, a wedge block right face, a wedge block front face and a wedge block rear face. The wedge block top face is a wedge face. An acute angle alpha is formed between the wedge block right face and the wedge block bottom face. A strip-shaped groove is formed in the wedge block rear face. The groove penetrates the wedge block top face and the wedge block bottom face. The wedge block right face is provided with a first inclined face. An acute angle beta is formed between the first inclined face and the wedge block left face. The adjusting wedge block groove comprises a wedge block groove bottom face, a wedge block groove left face and a wedge block groove right face. The wedge block bottom face is in contact with the wedge block groove bottom face for positioning. The wedge block left face is in contact with the wedge block groove left face for positioning. The wedge block groove right face is provided with a second inclined face. The second inclined face is in contact with the first inclined face for positioning. An acute angle gamma is formed between the second inclined face and the wedge block groove left face. The acute angle beta and the acute angle gamma both shrink towards the front face of the wedge block, and gamma is smaller than or equal to beta. The milling tool is convenient to adjust and free of separately compacting the adjusting wedge block.

The feeder has a needle wheel tooth (Z1) comprising an identifiable width and / or an identifiable height. Gaps are formed between a needle wheel tooth (Z) and the needle wheel tooth (Z1) with an identifiable depth. A driver (AT) i.e. stepper motor, drives a needle wheel (S) to move, and a sensor device (SE) i.e. fork-shaped photoelectric grid, scans the needle wheel teeth. An estimating unit (AW) estimates a signal of the sensor device, where estimating unit clearly identifies the needle wheel tooth (Z1) and the sensor device generates signals. An independent claim is also included for a method for locating elements on a pick-up position in a feeder.

The invention discloses a system and method for generating an autonomous tracking path model of an unmanned aerial vehicle. The system includes: an unmanned aerial vehicle remote control, used for the pilot to perform remote control operations on the unmanned aerial vehicle, generate control data and transmit it to The UAV airborne system; the RTK base station, which obtains the network positioning information of the network RTK base station group, and combines it with the RTK satellite positioning information of the RTK base station to calculate the positioning and calibration data of the UAV; The data of the human-machine remote control controls the flight of the drone, combines the RTK satellite positioning information of the drone with the positioning calibration data from the RTK base station, calculates the precise position of the drone, and sends it to the ground station; the ground station, According to the precise location information sent by the UAV airborne system, the key point coordinates of the UAV flight are screened, and the UAV autonomous tracking path model is generated. The invention is beneficial to generate an accurate autonomous tracking path model of the unmanned aerial vehicle, and brings great convenience to the autonomous inspection of the unmanned aerial vehicle.

The invention discloses a network RTK-based autonomous tracking and positioning system and method for unmanned aerial vehicles, comprising: an RTK base station, which is used to obtain network positioning information of a network RTK base station group through a 4G network, and RTK satellite positioning information of the RTK base station Combined, the positioning and calibration data of the UAV is calculated and transmitted to the onboard processing device of the UAV; the onboard processing device of the UAV is used to calibrate the RTK satellite positioning information of the UAV with the positioning from the RTK base station The data is combined to solve the precise position of the drone and realize the precise positioning of the drone. The invention calculates the differential correction data through the network positioning information of the RTK base station and the RTK satellite positioning information, and transmits it to the UAV for positioning correction, which is beneficial to improving the accuracy of the UAV positioning. stable advantage.

The invention discloses a method for improving the sealing performance of a butterfly valve and a high-sealing butterfly valve structure. Two symmetrically-arranged butterfly valve sealing devices are arranged between a valve seat and a valve body and are in sealing fit with a valve clack. A shaft sealing device is arranged on the valve body, and the shaft sealing device and a valve rod achieve sealing. The structure comprises the valve body. The valve seat and a valve cover are arranged on the outer side of the valve body, the valve rod and the valve clack are arranged in the valve body, and the shaft sealing device is arranged at the upper end of the valve body. Two sets of symmetrically-arranged valve clack sealing devices are arranged between the valve seat and the valve body. Each valve clack sealing device comprises a first sealing ring, a valve seat middle partition plate, a second sealing ring and a valve seat cover plate. A splitter plate is annularly arranged in each valve seat middle partition plate. A first sealing cavity is formed between each splitter plate and the valve cover and corresponds to the corresponding first sealing ring. A second sealing cavity is formed between each splitter plate and the valve body and corresponds to the corresponding second sealing ring. The method and the structure have the beneficial effect of being capable of improving the sealing performance of the butterfly valve.