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172results about How to "Ensure uniform motion" patented technology

Minisize rudders three-dimensional track emulation method under city environment

The present invention relates to a method of the 3D track simulation for a miniature aircraft under urban surroundings and belongs to the field of the 3D real-time route navigation technology for a miniature aircraft. The following modules are set in a computer: a map digitalized module, which digitalizes the 3D model of urban surroundings including threat points, buildings, the departure and target points of a miniature aircraft that is inputted by the graphical user interface (GUI), map parameters and the coordinate of a candidate navigation point composed of the 3D model of urban surroundings and the map parameters; a flight path programming module, which inputs the data from the map digitalized module, calculates the overall route index that takes the flight resource consumption rate and the survival rate into consideration, figures out the most feasible route using network optimizing algorithm under the condition of taking barriers into consideration, and then smooths the bevel at turnings and generates a realtime flight orbit; a data-collecting module, which collects the coordinate values of the aircraft positions and postures outputted by the flight path programming module and forms a posture coordinate value including orthogonal coordinate variables X, Y and Z, a pitch angle h, a yawing angle p and a roll angle r. The present invention saves flight resources and improves flights simultaneously.
Owner:TSINGHUA UNIV

Solar driving device of coil type automatic walking sprinkler

The invention relates to a solar driving device of a coil type automatic walking sprinkler. The device comprises a coil type sprinkler, wherein the coil type sprinkler is provided with a solar panel, a light illumination sensor, a rotary mechanism, a driving motor, a speed reducer, a speed sensor and the like. The device has the advantages that the device is driven by a motor which can be powered by solar energy, so the defect of high energy consumption of common water turbine driving of the general sprinkler is overcome; a storage battery is powered by the solar panel, so the complicated condition of a power supply line overhead a farmland is avoided; the solar panel is provided with an intelligent sun tracing system, the solar panel is enabled to automatically rotate and adjust the angles, and the higher photovoltaic power generation efficiency of the solar panel is realized; a hose pipe is provided with the speed sensor, a closed loop control system is controlled through speed to enable the hose pipe of a coiling vehicle to move at constant speed during pipe coiling, the speed difference caused by the winding layering of the hose pipe is avoided, and the uniform distribution of water spraying amount is ensured; the defects of high energy consumption, heavy weight, nonuniform distribution of water spraying amount and the like of the existing coil type sprinkler are overcome, and the solar driving device is a novel green, energy-saving and environment-friendly type intelligent driving device.
Owner:NORTHWEST A & F UNIV

Controller, control system and method of multi-section arm support equipment, and engineering machinery equipment

The invention provides a controller, a control system and method of multi-section arm support equipment, and engineering machinery equipment. The controller comprises a state judgment unit, a command judgment unit, a signal generation unit, a signal transmitting unit, an angle detection unit and a fine adjustment unit, wherein the state judgment unit is used for receiving an operation command and judging the real-time operating condition of an operating arm support corresponding to the operation command; the command judgment unit is used for judging whether through the operation command, the real-time operating condition of the operating arm support is changed or not; the signal generation unit is used for generating a corresponding start signal or a corresponding stop signal under the situation that the real-time operating condition of the operating arm support is changed; the signal transmitting unit is used for transmitting the start signal or the stop signal to an electric proportional valve corresponding to the operating arm support; the angle detection unit is used for obtaining movement angles of other non-operating arm supports if the quantity of operating arm supports is smaller than the total quantity of arm supports; and the fine adjustment unit is used for ensuring that each of the movement angles of the non-operating arm supports is lower than a preset angle threshold value. With the adoption of the technical scheme, the vibration can be prevented when the arm supports are started or are stopped, and the constant-speed motion of the operating arm supports and the stability of non-operating arm supports are kept.
Owner:SANY AUTOMOBILE MFG CO LTD

Novel device for detecting inner rolling path profile of ball screw nut, and method of device

ActiveCN107014311ANo need for secondary adjustmentSuitable for automated production testing needsUsing optical meansPhotovoltaic detectorsBall screw
The invention discloses a device for detecting the inner rolling path profile of a ball screw nut, and the device comprises a marble platform, a nut clamping device and an X-axis linear movement platform, wherein the nut clamping device and the X-axis linear movement platform are disposed on the marble platform. The nut clamping device is provided with a to-be-detected part, and the laser light emitted by a double-frequency laser generator passes through a light splitter and a light right-angle reflector to reach a laser interferometer. The first laser interferometer is used for measuring the lateral displacement of a workbench. A second interferometer and a third interferometer play the same role, and the light passing through the second and third interferometers will generate diffuse reflection on a rolling path of the to-be-detected part. The returned light will be received by a photoelectric detector, and the contours of left and right arcs of the inner rolling path of the to-be-detected part are obtained with the movement of a measuring rod fixed on the X-axis linear movement platform. The device is high in precision, is high in measurement speed, does not damage the detected part, is high in automation degree, and meets the demands of automatic detection.
Owner:NANJING UNIV OF SCI & TECH
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