Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

708results about How to "Reduce angle" patented technology

Quantitative determination method for dynamic stability of multi-legged robot based on leg force estimation algorithm

InactiveCN106547206AReduce angleThe judgment method is concise and clearAdaptive controlVehiclesRolloverEngineering
The invention provides a quantitative determination method for the dynamic stability of a multi-legged robot based on a leg force estimation algorithm, which is applicable to real-time detection for the stability of the robot when walking in an unstructured environment. The quantitative determination method is characterized in that motion states of joints and the robot body are acquired by a sensor, and variable values required by calculating the stability margin is solved through obverse and inverse kinematics; then the leg force of each supporting leg is estimated through the leg force estimation algorithm, and a supporting shaft and a landing point at which rollover occurs most easily are acquired according to the leg forces; a resultant force which is effective to rollover of the supporting shaft and the landing point is calculated according to a resultant force of the leg forces at the mass center and the moment of the resultant force, thus stability angles of the supporting shaft and the landing point can be acquired according to a formula, and a minimum stability angle is selected so as to calculate to acquire a normalized force angle stability margin value of the robot according to a formula. The advantages lie in that the method provided by the invention directly judges the stability margin for the supporting shaft and the landing point; stability variations brought about by the height of the mass center can be represented; and a vulnerable multi-dimensional force sensor is not required to be adopted to measure the leg force.
Owner:CENT SOUTH UNIV

Medical oxygen bottle carrying vehicle

The invention discloses a medical oxygen bottle carrying vehicle. The medical oxygen bottle carrying vehicle includes a carrying vehicle body; a supporting plate is arranged on a bottom end of the carrying vehicle body; the carrying plate is hinged to a lower end of the carrying vehicle body; a limiting device is arranged between the supporting plate and the carrying vehicle body; when the supporting plate rotates, an included angle between a plane where the supporting plate is located and the length direction of the carrying vehicle body is not greater than 90 degrees; the carrying vehicle also includes a pushing device, and a connection device for connecting the supporting plate and the pushing device; when the plane where the supporting plate is located is perpendicular to the length direction of the carrying vehicle body, a convex side of the pushing plate is pressed against an inner side of the carrying vehicle body, a pushing rod is embedded in the carrying vehicle body; and whenthe supporting plate rotates toward the carrying vehicle body, the pushing rod pushes the pushing plate to rotate away from the carrying vehicle body. The medical oxygen bottle carrying vehicle can be operated by a single man while carrying oxygen bottles; the carrying vehicle body is equivalent to a lever, the oxygen bottles can be pushed obliquely, and then labor resources can be saved.
Owner:景峰

MacPherson air suspension and assembly method thereof

A MacPherson air suspension comprises a cross stabilizer bar, two strut assemblies arranged on the left side and the right side of the cross stabilizer bar, a left steering knuckle, a right steering knuckle, a left lower suspension arm, a right lower suspension arm and a left-right stabilizer bar connection push rod connecting the cross stabilizer bar and the strut assemblies. Each strut assembly comprises a front shock absorber and an air spring assembly integrated on the front shock absorber, and the front shock absorber is fastened with the lower support of the front shock absorber through bolts. The upper ends of the left steering knuckle and right steering knuckle are respectively connected with the upper portion of the lower support of the front shock absorber through ball pin fittings, the lower portions of the left steering knuckle and right steering knuckle are connected with shaft sleeve connection plates of the steering knuckles through shaft pins and are connected with the lower portion of the lower support of the front shock absorber through the shaft sleeve connection plates, and the left steering knuckle and right steering knuckle respectively form an integrated frame structure with the lower support of the front shock absorber. The central connection line of the ball joints of the ball pin fittings and the shaft sleeves of the shaft sleeve connection plates of the steering knuckles is a main pin axis a. The MacPherson air suspension can meet the requirements of an automobile under various loading conditions, and ideal comfortable ride comfort can be obtained.
Owner:柳州孔辉汽车科技有限公司

Unmanned plane lens

The invention discloses an unmanned plane lens, and the lens sequentially comprises a front lens group, an aperture diaphragm and a rear lens group from the object space to the image space. The aperture diaphragm is located at the central part of the lens. The front lens group comprises a first lens with the negative focal length, a second lens with the negative focal length and a third lens with the positive focal length, wherein the first, second and third lenses are sequentially arranged from the object space to the image space. One surface, facing the object space, of each of the first, second and third lenses in the front lens group is a convex surface, and the surfaces, facing the image space, of the first and second lenses are concave surfaces. One surface, facing the image space, of the third lens is a convex surface. The rear lens group comprises a fourth lens with the positive focal length, a fifth lens with the negative focal length and a sixth lens with the positive focal length, wherein the fourth lens, the fifth lens and the sixth lens are sequentially arranged from the object space to the image space. One surface, facing the image space, of each lens of the rear lens group is a convex lens. The surfaces, facing the object space, of the fourth and sixth lenses are convex surfaces, and one surface, facing the object space, of the fifth lens is a concave surface. The lens provided by the invention is low in distortion, is big in view angle, is high in resolution, and is strong in capability of resisting the environment temperature changes.
Owner:舜宇光学(中山)有限公司

Display panel and manufacturing method thereof, and display device

The embodiment of the invention provides a display panel and a manufacturing method thereof, and a display device. The display panel comprises a substrate, a light-emitting device layer and a light adjusting structure layer, wherein the light-emitting device layer is located on the substrate, and comprises a plurality of light-emitting devices, the light adjusting structure layer is located on theside, away from the substrate, of the light-emitting device layer, and comprises a plurality of light adjusting units and a dielectric layer covering the plurality of light adjusting units, the refractive index of the light adjusting units is smaller than that of the dielectric layer, each light adjusting unit comprises a light adjusting sub-part, each light adjusting unit comprises a through hole, the through holes penetrate through the light adjusting units in the direction perpendicular to the substrate, the through holes are overlapped with the light emitting device, and the light adjusting sub-parts are arranged around the through holes. For one light adjusting unit, the thickness of the light adjusting part is gradually increased in the direction from the through hole to the light adjusting sub-part. The probability that light rays are totally reflected in the display panel and limited in the display panel can be reduced, and the light emitting efficiency of the light emitting device is improved.
Owner:HUBEI YANGTZE IND INNOVAION CENT OF ADVANCED DISPLAY CO LTD

Photovoltaic power generation apparatus

The invention discloses a photovoltaic power generation apparatus. The photovoltaic power generation apparatus comprises a base, a first fixed block and a second fixed block, a pair of guide rods and a sliding plate, wherein the lower part of the first fixed block is hinged with the base; a sleeve is fixed at the lower part of the second fixed block; a nut is coaxially fixed in the sleeve; a rotary screw rod is perpendicularly arranged on the base; the screw rod extends into the sleeve and is meshed with the nut; the screw rod rotates under the drive of a motor; the two ends of the pair of the guide rods are connected with the first fixed block and the second fixed block respectively; a sliding groove matched with each guide rod is formed in each of the left and right sides of the sliding plate separately; multiple rectangular mounting openings are formed in the sliding plate in an up-and-down penetration manner; a rectangular plate having the same dimension and shape as the rectangular mounting opening is hinged with the lower edge of each rectangular mounting opening separately; a supporting plate is fixed on the lower edge of each rectangular mounting opening; the lower surface of the rectangular plate and the upper surface of the supporting plate are fixed with the two ends of a telescopic rod; and a solar cell panel is paved on the upper surface of the rectangular plate. The photovoltaic power generation apparatus has excellent windproof and wind-resistant performance.
Owner:南安普敦咨询服务有限公司

Large tonnage forklift

The present invention provides a large-tonnage forklift truck, that is, the functions of the loader and the large-tonnage forklift are combined into one, and the boom of the original loader is shortened, thereby changing the fulcrum of the lifting cylinder on the boom, so that The active force arm on the swing arm becomes longer and the transmission force arm becomes shorter; and the rotating shaft set on the rocker arm is moved down to make the active force arm on the rocker arm longer and the transmission force arm shorter; lower the lifting cylinder in The connection point on the front frame makes the angle between it and the front frame smaller and has stronger thrust; and the diameter of the lifting cylinder is increased to increase the oil pressure of the lifting cylinder to increase the weight of the fork. The present invention combines the operating functions of large-tonnage forklifts and loaders, through the comprehensive integration of machinery, electrical appliances, and hydraulic pressure, and at the same time has the advantages of flexibility and off-road performance of loaders, and the advantages of large loading capacity of large-tonnage forklifts, and reduces fuel consumption. Relatively small, it can load and unload 25 tons of stone blocks, and can lift the goods to a height of more than 3200mm.
Owner:XIAMEN XIAJIN MACHINERY

Vertical take-off and landing miniature air vehicle with variable X-type wing

InactiveCN103979104AHigh power efficiencyImproved load carrying capacity and maneuverabilityAircraft controlVertical landing/take-off aircraftsFlight vehicleLevel flight
The invention relates to a vertical take-off and landing miniature air vehicle with a variable X-type wing. The vertical take-off and landing miniature air vehicle comprises a fuselage, a wing, a motor, an airscrew and a take-off and landing device, wherein the wing is bilaterally symmetrical about a body shafting XOZ plane and divided into an upper part and a lower part; the upper wing turns upwards, and the lower wing turns downwards, and the upper wing and the lower wing are respectively mounted on the fuselage; the upper wing and the lower wing on the same side of the air vehicle are distributed in an actual angle; each of the upper wing and the lower wing has a trapezoidal proportion and a sweep back angle; the wing adopts a negative bending wing profile, the front part of the wing has positive camber, and the rear part of the wing has negative camber; an angle of attack corresponding to zero pitching moment is a positive value. The vertical take-off and landing miniature air vehicle can stably realize vertical take-off and landing, level flight, hovering and switching of level flight and hovering, has the characteristics of simple power device, full energy utilization, high aerodynamic efficiency and good controllabitity under each flight condition and large speed coverage, and is suitable for being used as an air vehicle platform of a miniature unmanned aerial vehicle system.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Heating furnace of annular component

The invention provides a heating furnace of an annular component. A first guide partition plate, a second guide partition plate and a third guide partition plate are sequentially arranged inside a furnace body from top to bottom; a first airflow passage, a second airflow passage, a third airflow passage and a fourth airflow passage are sequentially formed between the top inner wall of the furnace body and the first guide partition plate, between the first guide partition plate and the second guide partition plate, between the second guide partition plate and the third guide partition plate and between the third guide partition plate and the bottom inner wall of the furnace body; airflow heating accelerators are arranged inside the second airflow passage and the fourth airflow passage; a first centrifugal impeller is arranged between the first guide partition plate and the second guide partition plate; a fifth airflow passage is formed by the upper and lower surfaces and the outer side wall of the annular component, and the top and bottom inner walls and the inner side wall of the furnace body; the first centrifugal impeller drives a gas to flow in circulating manner; the gas enters the second airflow passage from the air outlet of the first centrifugal impeller, hits against the inner side wall of the annular component after passing through the airflow heating accelerators, sequentially flows through the third airflow passage, the fourth airflow passage, the fifth airflow passage and the first airflow passage, and then enters the air inlet of the first centrifugal impeller. According to the heating furnace, the annular component can be specifically heated, and the energy consumption is relatively low.
Owner:XINJIANG GOLDWIND SCI & TECH

Staring infrared imaging forest-fire prevention alarming system with wide field of view

InactiveCN102509416AAvoid full launchSolve the problem of uniformity of illumination on the image planeRadiation pyrometryMountingsSpatial OrientationsCamera lens
The invention relates to a staring infrared imaging forest-fire prevention alarming system with a wide field of view. The system comprises an infrared imaging optical lens and an infrared refrigeration detector. Light rays are imaged on a focal plane array of the infrared refrigeration detector through the infrared imaging optical lens. The infrared imaging optical lens adopts a retrofocus structure. The imaging position of the infrared imaging optical lens and the spatial orientation information of an object form the object-image relationship of y'=fTheta, wherein y' is the image height of an image of the object on the focal plane array of the infrared refrigeration detector, f is the focal length of the infrared imaging optical lens, and Theta is an angle of field of view. The system adopts staring imaging, and a mechanical scanning structure is eliminated, so that the stability of the system is enhanced; and the system has the ultra-wide field of view of 180 degrees, and can realize the real-time imaging of all peripheral zones without any dead zone, so that the condition of false alarm can be effectively prevented, and a plurality of fire points can be discovered and monitoredat the same time.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Device for improving ranging accuracy of binocular camera

The invention discloses a device for improving the ranging accuracy of a binocular camera. The device comprises a base, a left rocker arm, a right rocker arm, a left lens, a right lens, a left image sensor, a right image sensor, a left phase distance adjustment device and a right phase distance adjustment device, which can adjust the distance between the lenses and the image sensors in real time according to the rotation angles of the rocker arms, a rocker arm driving device capable of simultaneously adjusting the angles of the two left and right rocker arms, and an angle sensor capable of measuring the rotation angle of the rocker arm driving device; the device can be used in the computer vision ranging or 3D modeling technology, the intersection of the optical axes of the left lens and the right lens can be adjusted to be located in the vicinity of a target object by the present device, thereby minimizing the deviation between the position of the target object in an image obtained inthe image sensor and the real position caused by system errors of a binocular camera ranging device, so that the ranging accuracy of the binocular camera is maximally improved; and meanwhile, the device can locate a clear imaging area of the camera in the vicinity of the intersection of the optical axes of the left lens and the right lens in a running process, the target object is clearly imagedin the image sensor while the ranging is performed on the target object, and the image processing requirements during binocular ranging are met.
Owner:长沙捕光新能源科技有限公司

Flexible differential/synchronous power driving system for solar sun tracing lens

A flexible differential / synchronous power driving system of a solar energy heliostat comprises a control system and a power driving system; two to five driving gears of two bull gear transmission systems which horizontally rotate and longitudinally rotate are uniformly arranged around a heliostat rotating gear; all the driving gears are meshed with the heliostat rotating gear; the output end of the heliostat rotating gear is connected with a heliostat base; the diving gears transmit the operational parameters of the diving gears back to a programmable controller of the control system through a torque and a rotating speed sensor; and a computer transmits a signal to the programmable controller through processing a transmitted signal of the programmable controller, so as to control the working state of a driving gear servo motor. The invention increases the driving capacity of the driving gears by adopting a proposal of the driving of a plurality of driving gears, instead of the prior proposal of the driving of one gear, and particularly ensures that the driving capacity is stable and the driving effect is enhanced under the unfavorable natural condition and during the heliostat longitudinal rotating process.
Owner:重庆创坤科技发展股份有限公司 +1
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products