41results about How to "Eliminate the effect of positioning accuracy" patented technology

The invention provides a process method for the co-gluing and forming of I-shaped reinforced wall panels of aircraft composite materials, which comprises the steps of: paving the skin; placing the process cover plate: placing the process cover plate on the paved skin Above, the process cover plate has a plurality of reserved slots for placing I-shaped stringers; stringer preparation; stringer pre-assembly; stringer and skin bonding combination; stringer mandrel filling; Vacuum bagging; curing; demoulding.

The invention provides an active-balance-mass-based dynamic-magnetic-steel magnetic levitation dual-stage vector arc switching method and device and belongs to the technical field of semiconductor manufacture equipment. The active-balance-mass-based dynamic-magnetic-steel magnetic levitation dual-stage vector arc switching device comprises a support framework, a balancing mass block, magnetic levitation stages, a stage measurement device and a stage driving device, wherein the two stages work between a measurement site and an exposure site; the positions of the stages are measured by plane gratings; an active compensation structure consisting of dual-motor crank and rocker mechanisms is adopted for motion compensation for the balancing mass block; the stages are driven by a dynamic-magnetic-steel magnetic levitation planar motor; in the switching process of the two stages, the planar motor drives the two stages to achieve quick single-beat arc switching. The invention solves the problem that a conventional switching scheme is more in beat, long in track, more in start and stop process, long in stabilizing time and the like, the switching processes are reduced, the switching time is shortened, and the productivity of a lithography machine is improved.

The invention discloses a drone operator positioning system and method based on an aerial radio monitoring platform, and belongs to the technical field of radio direction finding and positioning. The invention includes an airborne direction finding system and a ground control system. The airborne direction finding system measures the incoming wave direction where the maximum energy of the target signal appears, and determines the position; the ground control system remotely controls the airborne direction finding system and the air monitoring platform, and obtains the positioning in real time. result. The airborne direction finding system collects and compresses the target signal, extracts the frequency hopping signal, and matches the azimuth angle, GPS position and time information with the frequency hopping signal in real time; the ground control system controls the air monitoring platform to change the air attitude, so that the airborne measurement Determine to the system the incoming wave direction where the maximum energy of the target signal appears. The present invention is applicable to areas where multi-point ground monitoring equipment is unconditionally erected in complex urban environments, saves manpower and funds, and realizes wide-band, all-round, and high-precision spatial positioning of frequency-hopping signals of remote controllers.

The invention provides a gravity-removing positioning method and a positioning jig for a contactor with an L-shaped mounting frame. When positioning the contactor to be sealed with an L-shaped mounting frame, the bottom surface of the contactor is suspended. In the invention, the bottom surface of the contactor to be sealed with the L-shaped mounting frame is positioned in the air, and the welding surface after the matching of the cover and the base is directly positioned, thereby improving the precision of the laser focal length in the welding process; The influence of welding deformation on the positioning accuracy ensures precise positioning; the positioning accuracy deviation ranges from 0.01 to 0.04 mm, and the positioning accuracy is increased by more than 10 times.

The method comprises: using a repeater coupled-to / integrated-in a location assistant function (LAF) unit as the location assistant device; the network side of the location system can either get TDOA (the time difference of arrival) corresponding to the pilot frequency signal from base station and the TDOA corresponding to the pilot frequency signal of the base station through the repeater, and or get the TDOA corresponding to the pilot frequency signal of LAF unit in the location apparatus; it uses the TDOA corresponding to the pilot frequency of LAF unit and the parameter information of the repeater predetermined at network to abandon the TDOA corresponding to the pilot frequency signals from base station through the repeater, and uses the rest TDOA-namely the TDOA corresponding to the pilot frequency signals from base station and the TDOA corresponding to the pilot frequency signals from LAF unit to make location calculation for the mobile station.

The invention discloses a multi-module position module based on the satellite position, which comprises a GPS OEM board with up-and -down structure and a DR circuit plate, wherein the two parts are connected with each other by the interface; the multi-module position module also possesses a position beacon interface, a matching electric map interface, an angle speed measuring unit, a car mileage and reverse signal matching receiving circuit, a MCU CPU, a computer communication interface and a power managing module.