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4491 results about "Deflection angle" patented technology

Deflection angle. The angle at a point on the earth between the direction of a plumb line (the vertical) and the perpendicular (the normal) to the reference spheroid; this difference seldom exceeds 30 seconds of arc.

Mobile phone-based panoramic photographing realization method and mobile phone

The invention discloses a mobile phone-based panoramic photographing realization method and a mobile phone. The method comprises the following steps of: prompting a user to rotate for a photographing angle when a previous photograph is taken, timely detecting each-axle rotation angle of the mobile phone by a started gyroscope, and timely prompting the user to modify the photographing angle when the detected x-axle and/or y-axle deflection angle of the mobile phone exceed(s) a preset angle; prompting the user to stop rotating, take the current photograph, and store and add corresponding angle information when the x-axle deflection angle and the y-axle deflection angle of the mobile phone are detected to be less than the preset angle, and Z-axle rotation angle reaches an appointed angle of the position for taking the next photograph; and sequentially jointing the taken photographs according to each stroked photograph naming angle information, and combining into the panoramic photograph. A new function of the mobile phone is increased: the mobile phone can automatically prompt the user to modify the photographing angle, and the user can preferably control the photographing angle, so that a panoramic image with a better effect can be obtained, and the mobile phone is simple to operate and easy to realize.
Owner:HUIZHOU TCL MOBILE COMM CO LTD

Automobile traveling control system and automobile traveling control method

The invention discloses an automobile traveling control system and an automobile traveling control method and belongs to the technical field of automobiles. The automobile traveling control system comprises an acquiring unit, an environment sensing unit, a traveling parameter collecting unit, a planning and decision-making unit and a real-time control unit, the acquiring unit is used for acquiring a driving instruction, the environment sensing unit is used for sensing automobile traveling environment in real time and generating environment information, the environment information includes one or multiple of lane line position, target automobile information, current automobile pose and garage position information, the traveling parameter collecting unit is used for acquiring a current automobile traveling state and generating automobile traveling parameters, the automobile traveling parameters include one or multiple of current automobile speed, front wheel deflection angle and automobile traveling route, the planning and decision-making unit is used for generating a control instruction according to the environment information, the automobile traveling parameters and the driving instruction, and the real-time control unit is used for controlling automobile traveling according to the control instruction. The automobile traveling control system integrates functions of lane line maintaining, self-adpative cruising and automatic parking, so that functions of an intelligent automobile are further enriched.
Owner:CHERY AUTOMOBILE CO LTD

Three-hole transonic speed pressure probe

The invention discloses a three-hole transonic speed pressure probe. As a pneumatic technology develops, a transonic speed air flow appears more and more frequently, for instance, many air flows in an aeroengine reach a transonic speed state, so these transonic speed flow fields need to be measured and analyzed during development of engine components. Conventionally, the transonic speed flow fields are measured respectively by use of a total pressure probe and a direction probe so that total pressure and air flow directions can be obtained. When a flow speed reaches a transonic speed, the probes are under great resistance, and the probes are blown bent easily. When the flow speed reaches an ultrasonic speed, due to the existence of shock waves, there is large total pressure loss, and the influences exerted by the probes on the flow fields are quite large. Though these conventional probes can be used in an ultrasonic air flow, the influences exerted by the probes on the flow fields cannot be neglected, and the requirement for the strength of the probes is quite high. The novel three-hole transonic speed pressure probe provided by the invention is used for measuring the transonic speed flow fields. By use of the probe provided by the invention, the intensity of the shock waves in front of the probe can be weakened during measurement, the influences exerted by the probe on the flow fields are reduced, air-flow total pressure, static pressure, a Mach number and an air-flow deflection angle can be measured simultaneously, the resistance acting on the probe can be effectively reduced, and the firmness and reliability of the probe are guaranteed.
Owner:BEIHANG UNIV

Position and attitude parameter measurement system of machine body of boring machine and method thereof

The invention relates to a position and attitude parameter measurement system of a machine body of a boring machine and a method thereof, and the position and attitude parameter measurement system consists of a line laser transmitter, a rack of the line laser transmitter, laser targets, a programmable computer controller, an A/D conversion module and two inclination sensors. The line laser transmitter is positioned by a laser direction indicator and the rack of the line laser, emits a fan-shaped laser beam and forms linear spots on the machine body of the boring machine. An photosensitive element in one position on one of the two laser targets consisting of the photosensitive elements senses the laser beam and generates a current signal at any time, and the current signals are processed and calculated by an internal circuit of the laser targets and the programmable computer controller, thereby determining the positions of the laser beam on the laser targets; furthermore, the mounting positions of the laser targets on the boring machine are known, thereby obtaining a deflection angle and deflection displacement of the boring machine. Two inclination sensors measure a pitch angle and a roll angle of the boring machine, thereby completing the measurement of position and attitude parameters of the machine body of the boring machine. The system has the advantages of low cost, high precision, good real-time property and convenient operation.
Owner:CHINA UNIV OF MINING & TECH (BEIJING) +1

Horizontal and vertical coordination control method for trajectory tracking of intelligent vehicle

InactiveCN108248605AImprove lateral stabilityRealize longitudinal speed tracking controlControl devicesControl systemModel predictive control
The invention relates to a horizontal and vertical coordination control method for trajectory tracking of an intelligent vehicle. For association and coupling characteristics of horizontal and vertical dynamics of the intelligent vehicle, a horizontal and vertical coordination controller for trajectory tracking of the intelligent vehicle is designed. By applying a model prediction control and sliding mode control algorithm, the opening degree of a throttle valve of an engine, the pressure of a main braking cylinder and the deflection angle of a front wheel are cooperatively controlled. In thedesign of a horizontal MPC, the state amount of the vehicle is selected at the formula which is shown in the description, and the state amount (vertical speed vx) is real-time changable vehicle speedoutput by the vehicle after vertical control; vy is a horizontal speed at the mass center of the vehicle; the formulas which are shown in the description are the heading angle and heading angle speedat the mass center of the vehicle; Y and X are a horizontal position and a vertical position under world coordinates. According to a horizontal and vertical coordination control system, the intelligent vehicle efficiently and stably tracks an expectation trajectory at the expected speed. Large-steering operation can be remarkably improved, and the horizontal stability of the intelligent vehicle inthe trajectory tracking process is improved.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

Tool bit rock breaking mechanism and abrasion tester

The present invention provides a cutter rock-breaking mechanism which is applied in the technical field of the cutter experiment and an abrasion resistant tester thereof. The abrasion resistant tester comprises a hydraulic cylinder, a structural frame, a bearing plate, a cutter support, a disc-shaped hob and a rotation worktable. When the cutter rock-breaking mechanism and the abrasion resistant tester work, the disc-shaped hob is connected with the cutter support through a bolt. The cutter support is jointed and fixed on the bearing plate through the bolts. The hydraulic cylinder exerts a certain load to impact the disc-shaped hob to the rock sample on the worktable and generate a certain penetration. Afterwards the worktable is rotated through a power system to execute cutting test to the rock passively. The cutter rock-breaking mechanism and the abrasion resistant tester execute cutting with a single cutter to do the abrasion resistance test of the cutter. The bearing plate is provided with a groove. The regulation to the cutter space and the phase angle is realized through the variation of the jointing position of the cutter support on the bearing plate. The regulation to the inner deflection angle of the cutter is realized by changing the cutter supports with different angles. The positioning and rotation of the rock are realized through the rotating worktable. The designing of the device is novel and scientific. The knife angle, phase angle and inner deflection angle which affect larger to the rock breaking and abrasion of cutter are researched. The device settles the problem that two hob cutters simultaneously cut the rock.
Owner:NORTHERN HEAVY IND GRP CO LTD

Star sensor calibrator and method for calibrating high-precision star sensor

The invention discloses a star sensor calibrator and a method for calibrating a high-precision star sensor. The star sensor calibrator has the structure that a two-dimensional adjustable plane mirror is arranged on the optical path between a single-star simulator and a star sensor to be calibrated; the position forming an included angle of 90+/-15 degrees with the two-dimensional adjustable plane mirror is provided with a laser device of a laser angle measuring device; the position 50-200 cm away from the center of the two-dimensional adjustable plane mirror is provided with a high-precision two-dimensional guide rail which can vertically and horizontally move on an optical hover platform; a laser detector of the laser angle measuring device is installed on the high-precision two-dimensional guide rail; after being reflected by the two-dimensional adjustable plane mirror, the laser emitted by the laser device is incident into the laser detector; and a data processing computer is respectively communicated with the star sensor to be calibrated and the laser detector. The invention does not need to rotate the star sensor, increases the tangential distortion and the deflection angle of the installation error, and can meet the requirements for very-high-precision (sub-arcsec) star sensors. The invention has the advantages of simple method and small amount of calculation.
Owner:NAT UNIV OF DEFENSE TECH

Laser heterodyne interference linearity measuring device and laser heterodyne interference linearity measuring method with six-degree-of-freedom detection

The invention discloses a laser heterodyne interference linearity measuring device and a laser heterodyne interference linearity measuring method with six-degree-of-freedom detection. The laser heterodyne interference linearity measuring device comprises a laser heterodyne interference linearity and position detection part and an error detection and compensation part; a four-degree-of-freedom error detection light path consisting of three ordinary beam splitters, a polarizing beam splitter, a plane reflecting mirror, a convex lens, a position sensitive detector and two four-quadrant detectors is additionally arranged in a light path structure of the laser heterodyne interference linearity and position detection part. By utilizing a method for integrating the laser heterodyne interferometry and a laser spot detection method, the simultaneous six-degree-of-freedom detection of a deflection angle, a pitch angle, a rolling angle, horizontal linearity, vertical linearity and linearity position of a measured object can be realized, the error compensation is carried out for the vertical linearity and the vertical linearity position, the influence of rotation error of the measured object on a measurement result in the linearity measuring process can be eliminated, and the measurement precision of the laser heterodyne interference linearity and the position of the laser heterodyne interference linearity can be improved.
Owner:ZHEJIANG SCI-TECH UNIV

Tool and method for measuring deflection angle of airplane control surface

The invention discloses a tool and a method for measuring the deflection angle of an airplane control surface. The measuring tool comprises a control surface clip (1), a stabilizer clip (6), a brace rod (5), a regulating arm (4), a sensor support (3), an angular displacement sensor (7) and a forked rocker arm (2). The measuring process comprises the following steps: clamping the stabilizer clip (6) of the measuring tool to a force-bearing position of a vertical tail stabilizer (45), sequentially mounting the brace rod (5), the regulating arm (4), the sensor support (3), the angular displacement sensor (7) and the forked rocker arm (2) in place, clamping the control surface clip (1) to a force-bearing position of an upper rudder (46), and moving the angular displacement sensor (7) to a rotary shaft of the upper rudder (46) so as to measure the deflection angle of the control surface. The invention can be simultaneously used for measuring the deflection angle of the rudder or the elevator in the bench test or the ground built-in test of an airplane, can be directly used for measuring the deflection angle of the control surface without disassembling structural parts of the airframe, and is especially suitable for the condition that the deflection amount can not be educed for measurement by means of a link mechanism in case that the rotary shaft is arranged inside the envelope of the control surface.
Owner:XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA

Multi-combination laser radar device and scanning method thereof

The invention relates to a multi-combination laser radar device and a scanning method thereof. The multi-combination laser radar device comprises a base, a radar installation structure, a plurality of laser ranging components, a time calculation unit, an MCU (micro-control unit) main control component and a communication interface, the radar installation structure is arranged above the base, the laser ranging components are arranged on the radar installation structure and comprise multiple groups of laser transmitters and multiple groups of laser receivers, each group of laser transmitters comprise a plurality of transmitting units on the same vertical plane, laser emergence angles respectively transmitted by the transmitting units sequentially deviate predetermined deflection angles along the vertical direction, and each group of laser receivers comprise a plurality of receiving units on the same vertical plane and are respectively used for receiving laser signals transmitted by the corresponding transmitting units. The multi-combination laser radar device is novel in structure and rich in function and can scan three-dimensional information of detected peripheral objects, peripheral environments can be conveniently monitored in real time, and actions of acquired point cloud data are sufficiently played.
Owner:深圳市砝石激光雷达有限公司
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