195 results about "Effective radius" patented technology

An improved variable radius chain or belt transmission is provided for bicycle, motorcycle, automobile, industrial, household and consumer product uses. It delivers power and shifts under power through a continuously variable range of ratios. Alternative means are disclosed: for properly engaging the chain or belt regardless of drive radius; for handing off the workload of the chain or belt even while the drive's effective radius is changing; for minimizing the force required to expand a drive under chain or belt; for supporting the chain or belt attachment points in radially variable manner; for circumferentially bridging the spans between radial attachment points; for coordinating the radial movement of the attachment points within one drive; for actuating up-shifting or down-shifting processes in forward or reverse; and for simultaneously varying the effective radii of input and output drives in coordinated fashion.

An optical scanning device includes a light source having light emitting points for emitting light beams, a coupling optical element that couples the light beams, a deflecting unit that deflects and scans the light beams, and a scanning optical system that focus the light beams to form an image. The optical scanning device satisfies the following condition:F tan(θ / 2)+A<D / 0.7 where A is the maximum distance between the light emitting points and an optical axis of the coupling optical element, θ is a divergence angle (full-width half-maximum) of the light beams, F is a focal length of the coupling optical element, and D is an effective radius of the coupling optical element.

The invention discloses a concrete pouring and vibrating dynamic visualization monitoring method. A vibrating bar point operating track detecting system based on global position system (GPS) dynamic positioning test collects / transfers / processes vibrating bar point operating track state parameter information in real time and adopts a computer graphic on-line method to display, and monitors and evaluates pouring and vibrating state effect in real time according to judge standard of concrete vibrating control parameters (such as vibrating geometric boundary / vibrating effective radius / vibrating inserting-and-extracting threshold and the like). Therefore, phenomena including vibration omission / vibration lack / excessive vibration, construction cold joints and the like are avoided, accurate quantization judge of the concrete pouring and vibrating density state is achieved, a traditional method that the concrete pouring and vibrating state is completely judged by on-site operators relying on experiences is thoroughly changed, the shortcoming that on-site concrete vibrating below the standard is difficult to process and poor in processing effect is overcome, and vibrating construction defects can be processed accurately and reliably.

The invention discloses a test method of a drill hole gas extraction effective radius. The test method of the drill hole gas extraction effective radius comprises the following steps: selecting a sulfur hexafluoride (SF6) gas trace method to conduct spot test, under the condition of testing different pitches, sampling and collecting the SF6 gas required time which is detected by a detection hole, establishing a module at the basis of the Darcy law based on the occurrence of coal seam condition of the detecting location, simulating the flowing condition of the SF6 gas in a gas seepage field; calculating and obtaining the required time Ti'of the SF6 gas which moves to a sampling and collecting test hole, calculating a sampling and collecting effective coefficient a; detecting the required time of the SF6 gas based on the sampling and collecting detection hole detected by the SF6 gas trace method, calculating the required time which lowers the relative distance gas pressure below an effective value, and calculating the drill hole gas extraction effective radius based on power function relation between drill hole sampling and collecting gas effective extraction effective radius r (m) and the sampling and collecting time t (d). The test method of the drill hole gas extraction effective radius adopts combination of a direct method and an indirect method, and solves the problems that a plurality of defects exist by using the direct method to detect a drill hole gas extraction radius and extraction effective index is difficult to ascertain.

The invention discloses a method for obtaining mining area earth surface three-dimensional deformation fields through a single interferometric synthetic aperture radar (InSAR) interference pair. The method includes that a mining field radar sight deformation field is obtained through an InSAR technology, pixels with coherence which is lower than an unwrapping threshold value in the sight deformation field is subjected to spatial interpolation to obtain a spatial continuous deformation field, main effective radius of each pixel is calculated through mining area working face distribution and main effective angles, after mining area horizontal shifting coefficients are obtained, the mining area earth surface horizontal shifting is converted to an expression of a sinking value, an equation set is formed according to the radar imaging principle, the equation set is solved to obtain a solution of the earth surface sinking value, according to the sinking value, tilting values of east, west, south and north directions are calculated, and the deformation fields of the east, west, south and north directions are calculated according to a proportional relation among the tilting values of the east, west, south and north directions and the horizontal shifting. The method has the advantages that the restrictions that when the three-dimensional deformation field is solved by the aid of the InSAR, the requirements for data are strict, the monitoring cost is high and the like are broken, and the application space of the InSAR technology in the mining area is greatly widened.

The invention relates to a real-time extracting method of satellite remote sensing sea fog characteristic quantity, daytime EOS / MODIS data is used and is read into a raw data file PDS, the difference of sea fog and low cloud on a spectral characteristic is analyzed in two steps that: firstly, the sea fog and the low cloud are separated, and then, the sea fog characteristic quantity is extracted, namely that a three-level identifying method is adopted to orderly filter high cloud, middle cloud, low cloud, a cloudless water body, a solar flare water body, a cloud shadow area, a sea ice and a snow cover, the sea fog detection is established, a sea fog distributing area is obtained, a file which comprises a sea fog detecting result is generated, then, the sea fog characteristic quantity of the optical thickness of a fog area, the effective radius of fog and a liquid water path are calculated according to a formula, and pictures are displayed on a microcomputer. The method not only extracts the sea fog characteristic quantity, but also can calculate the visibility and the fog top height of the fog, consequently, the quantification detection of the sea fog is realized, and a dissipation forecast of the sea fog supplies meteorological information for air safety above the sea, maritime traffic and coastal airport operation.

A belt-type continuously variable transmission comprises a drive pulley including cylinder and cramp chambers which vary an effective radius of the drive pulley when applied with a hydraulic pressure, a driven pulley including cylinder and cramp chambers which vary an effective radius of the driven pulley when applied with a hydraulic pressure, a belt operatively put around the drive and driven pulleys and a hydraulic circuit that applies the cylinder and cramp chambers of the drive and driven pulleys with the hydraulic pressure to vary the effective radii of the drive and driven pulleys. The hydraulic circuit includes a line pressure passage that has a line pressure regulating valve installed therein for producing a line pressure in the line pressure passage. The cramp chambers of the drive and driven pulleys are substantially the same in a pressure receiving area and are connected to the line pressure passage to be fed with the line pressure.

The invention provides a coal bed gas drainage effective radius measuring method, relating to designing of spacing of wells for coal bed gas drainage and adapting to occasions of water power slit drainage, intensive hole stripping drainage, hydrofracturing drainage, hydraulic holing drainage, and coal bed gas drainage with enhanced drainage of protection layer mining. According to the correspondence of coal bed gas pressure and gas content, the effective radius of the coal bed gas drainage is determined by utilizing the gas pressure change conditions so as to direct the implementation of the effective radius determination of the coal bed gas drainage. An observing hole is constructed on a design point as required, then is sealed and is provided with a pressure gage; When the pressure is stable, a drainage hole is constructed and networked for drainage, the pressure changing condition of gas at the observing hole is observed and well recorded so as to obtain the effective radius of the coal bed gas drainage corresponding to the specific drainage time, thus laying a foundation for designing a drainage scheme and achieving the purpose of safe and efficient production.

The invention discloses an optical imaging system, comprising seven lenses referred to as a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens arranged along the optical axis from the object side to the image side in a succession wherein the first lens is provided with a negative focal power and its image side face is a concave face; the fourth lens is provided with a positive focal power; the fifth lens is provided with a positive focal power or a negative focal power and its image side face is a concave face; the seventh lens is provided with a position focal power or a negative focal power and its image side face is an aspheric face with at least one point of inflexion; the second lens, the third lens and the sixth lens are provided with a position focal power or a negative focal power respectively; and the effective radius DT11 of the first lens's object side face and the half of the diagonal line length ImgH of the effective pixel area of the electronic light sensing component of the optical imaging system satisfy the condition that the division of DT11 by the ImgH is smaller than one but bigger than 0.5.

The invention discloses a method for monitoring a tire burst or severe air leakage of a vehicle. The electronic control unit (ECU) of a tire burst or severe air leakage monitoring system comprises a wheel speed signal vibration performance analysis module and an effective radius performance analysis module, wherein the wheel speed signal vibration performance analysis module monitors and calculates a natural frequency threshold and a natural frequency of a tire in real time; the effective radius performance analysis module calculates a variation rate and a threshold of a wheel speed, a specific value and a threshold of a wheel speed product between diagonal wheels; and the ECU combines the criterions to judge the tire burst or the severe air leakage. The monitoring method of the invention reasonably simplifies and combines in the criterion algorithm thereof, can timely and accurately monitor the tire burst or the severe air leakage in a mode of indirectly combining a plurality of criterions after the tire burst or the severe air leakage occurs, informs a driver of related information or drives a related tire burst braking control system at the same time, improves the safety performance of the accident tire burst or severe air leakage of the vehicle and is low in monitoring cost.

The invention discloses a camera lens set. The camera lens set comprises a first lens with positive focal power and a convex object side surface, a second lens with negative focal power and a concave image side surface, a third lens with focal power, a fourth lens with focal power, a fifth lens with focal power, and a sixth lens with focal power from the object side to the image side of the camera lens set, wherein the maximum effective radius DT11 of the first lens object side surface and the maximum effective radius DT62 of the image side surface of the sixth lens satisfy a follow condition that 0.8<DT11 / DT62<1.2. According to the camera lens set, six plastic aspheric lenses are used, and the camera lens set has the advantages of a long effective focal length, good imaging quality, and small sizes of modules.

A star sensor low-frequency error compensation method based on landmark information solves the problem that determination precision of satellite attitude is affected by low-frequency error of star sensors, utilizes the recursive least square algorithm to evaluate and compensate the low-frequency error of the star sensors according to the landmark measurement information which is on one time sequence and provided by an effective load. By the star sensor low-frequency error compensation method based on landmark information, determination precision of the satellite attitude is increased. Due to the fact that the satellite attitude determination data serve for the effective load, the compensation for the low-frequency error of the star sensors is carried out by the reference of the effective load, so that the attitude information output from a satellite attitude determination system is consistent with the effective load and then orientation variation of the effective load can be reflected accurately.

The invention discloses a simulation method for a finite element of a laser welding temperature field based on a BP neural network and a genetic algorithm GA, which includes the following steps. Step 1 is a simulation of the finite element of the laser welding in which a heat source model with a surface body combination consisting of a gauss surface heat source and a cylinder heat source is selected, a thermal distribution coefficient of a surface heat source, an effective radius of the surface heat source, and an effective thermal power coefficient are selected to be design variables. Moreover, an orthogonal experiment table is designed and simulation errors of the finite element of the heat source model with a surface body combination under different parameters are calculated. Step 2, the BP neural network is established, trained and tested. Step 3, the solution of a optimum parameter is found and the feasibility of optimization results is determined. Then the BP neural network is re-established and the optimization solution of the genetic algorithm is found again when there are big errors. The simulation method for the finite element of the laser welding temperature field based on the BP neural network and the genetic algorithm GA achieves the improved efficiency and precision of the traditional welding temperature field, thereby being easy to find the optimal solution of the simulation.

A tire wear state estimation system for a tire calculates tire effective radius during measured distance intervals travelled by the tire from vehicle speed and tire rotation counters. The system includes a filter for selecting slow-speed effective radius measuring intervals and an estimator for estimating the tire effective radius during only those intervals in which the vehicle is travelling below a threshold speed.

An imaging lens has a compact shape and sufficiently compensates for various aberrations.The imaging lens includes a first lens, a second lens, and a third lens disposed sequentially, with the first lens toward an object. The conditions “0.5H<T0<0.7H,”“2<φr4 / φ<2.5,” and “0.15<φr5 / φ<0.3” are satisfied, where: H is the effective radius of the surface of the third lens facing an image surface; T0 is the distance between the optical axis and a point on a line parallel to the optical axis and normal to the surface of the third lens facing the image surface; φ is the combined refractive power of the imaging lens; φr4 is the refractive power of the surface of the second lens facing the image surface; and φr5 is the refractive power of the surface of the third lens facing the object.

Systems and methods are provided for automatically controlling operation of an implement provided on a machine. A swing angle of an arm on which the implement is provided may be controlled by determining actual and desired swing angles, generating a swing angle error, and automatically operating actuators on the machine to align the implement along the desired swing angle. An effective radius of the implement assembly may similarly be controlled by determining actual and desired effective radii, generating a radius error, and automatically operating actuators on the machine to move the implement to the desired effective radius.

An optical lens to be arranged in an optical information recording and / or reproducing apparatus includes at least one lens main body; an antireflective film arranged on a first lens surface which has the largest surface angle θ on an outer peripheral portion in an effective radius of lens surfaces on the lens main body; wherein for a light entering perpendicularly to a central portion of the first lens surface whose central portion has a surface angle θ of 0 degree, a spectral reflectance of the antireflective film has one or more regions in which the spectral reflectance is continuously 4% or below and the wavelength includes at least a part of a wavelength region of 300 to 1000 nm, the broadest wavelength region of the one or more wavelength regions extends from wavelength λ1 to λ2 and the wavelength λ1 is in a range of 348-460 nm.

The invention relates to a revolving-ring underwater glider which comprises a machine body and an internal platform mounting structure, wherein a comprehensive control mechanism, a control communication and power system, a revolving wing system and a measurement sensor are mounted in the machine body. The revolving-ring underwater glider is compact and reasonable in structure and convenient to operate; by integration of net buoyance and a gravity center adjustment mechanism into a comprehensive attitude adjustment mechanism, the internal load-bearing space and the system weight are effectively reduced, and the effective load can be increased by about 80 percent, which accounts for 10 to 20 percent of the total load; by the design of revolving wings, the lift-drag ratio of the glider can be effectively increased, and the gliding efficiency can be improved; meanwhile, the glider has steering capacity and the capacity of moving on a horizontal plane; and the maneuverability and the flexibility of the glider are effectively improved.

The maximum effective radii of an on-chip decoupling capacitor based on a target impedance (discharge) and charge time are determined. To be effective, an on-chip decoupling capacitor should be placed such that both the power supply and the current load are located inside the appropriate effective radius. If this allocation is not feasible, the current load is partitioned into several circuit blocks, reducing and distributing the localized current demands. The on-chip decoupling capacitors are allocated to each block while satisfying both effective radii criteria.

An imaging optical system includes a bending optical element which bends an object-emanating light bundle, a post-bending lens system on a post-bending optical axis defined by the bending optical element, and an image sensor. An effective optical surface of a large-diameter lens element, having a greatest axial light bundle effective radius, is formed into a non-circular shape by making a length of the effective optical surface from the post-bending optical axis toward a side opposite from the object side smaller than the axial light bundle effective radius, with reference to the axial light bundle effective radius lying on a plane which extends orthogonal to a plane including both the post-bending optical axis and a pre-bending optical axis of the imaging optical system and includes the post-bending optical axis.

The invention discloses a cross-country vehicle wheel which relates to a wheel, in particular to an obstacle crossing mechanism of a wheel with single degree of freedom. Through the cross-country vehicle wheel, the problem that the existing wheels are bad in adaptability and basically unchangeable in effective radius is solved. A central through hole is arranged on a hub of the cross-country vehicle wheel; a flange and a mechanism basic disc are respectively arranged at the inner and outer sides; a shaft of a motor which is arranged in an inner hole of the flange penetrates through the hub and a central hole of the mechanism basic disc and then is connected with the center of a three-fork rod so as to drive the three-fork rod to rate; the forks of the three-fork rod drive three sets of completely same mechanisms; the mechanisms are respectively combined by two four-rod mechanisms; under the driving of the three-fork rod, the effects of unfolding beyond the wheel radius and folding in the hub can be realized; under the folding state, the wheel can roll normally and run at a high speed; and under the unfolding state, the obstacle crossing of the wheel can be realized via the enlarged effective radius.

An objective lens for an optical pick-up which is used to record data to and / or to reproduce data from at least three types of optical discs by selectively using one of at least three light beams having different wavelengths is provided. When thicknesses of a first, second and optical discs are represented by t1, t2 and t3, respectively, a relationship t1≦t2<t3 is satisfied. When numerical apertures required for the first, second and third optical discs are represented by NA1, NA2 and NA3, respectively, a relationship NA1≧NA2>NA3 is satisfied. The first, second and third light beams are incident on the objective lens as substantially collimated light beams, respectively. In this configuration, at least one of surfaces of the objective lens includes a first area for attaining the numerical aperture required for recording data to and / or reproducing data from the third optical disc, and a second area located outside the first area. The first area includes an inner area including an optical axis of the objective lens, and an outer area located outside the inner area. The outer area is configured to converge the third light beam on a data recording layer of the third optical disc with an amount of an aberration being substantially zero. The objective lens satisfies a condition: 0.75<h1a / h1<0.87 . . . (1), where h1 represents an effective radius of the first area, and h1a represents an effective radius of the inner area.

A device to convert energy having exterior and interior rotors where the number of legs (Λ) of an interior rotor divided by the number of chambers (X) defined by the fins of the outer rotor is equal to the effective radius of the inner reference circle ri divided by the effective radius of the outer reference circle ro (i.e. Λ / X=ri / ro). Where the surface of the fins of the outer rotor and the toe and heel portion of the interior rotor allow for a sealed chamber for a finite amount of rotation of the inner and outer rotors.

A meter for reproducibly and accurately measuring the delivery or flow rate of known fluids in chromatography and other pressure driven pumping systems, comprising a sense tube of known effective radius and length, coupled to a temperature measuring device, and enclosed in such a way as to allow the temperature of the tube and fluid to be measured, and optionally regulated. The invention is also useful for determining the viscosity of an unknown fluid or combination of fluids.

The invention provides an eyepiece. The eyepiece is successively provided with a first lens with positive focal power and a convex object side and a second lens along the optical axis from the object side to the image side. The second lens has a concave image side. At least one of the object side of the first lens, the image side of the first lens, the object side of the second lens and the image side of the second lens is a Fresnel structure plane. The maximum half field angle HFOV of the eyepiece is greater than 40 degrees. According to the on-axis distance TTL from the object side of the first lens to an imaging face and the total effective focal length f of the eyepiece, 1<TTL / f<1.5. According to the total effective focal length f of the eyepiece and the on-axis distance TD from the object side of the first lens to the image side of the second lens, 2<f / TD<5. According to the effective radius DT11 of the object side of the first lens and the effective radius DT21 of the object side of the second lens, 2.7<DT11 / DT21<1.

The invention discloses an intelligent tower crane control system including a front computer and a rear computer which are in wireless connection; the front computer is connected with a sensor interface circuit and an electric appliance switch interface circuit; the rear computer is connected with an operating panel and is internally embedded with a construction building information data recognition and data processing subsystem. The construction building information data recognition and data processing subsystem is internally imported with building information model data; the building information model data include tower crane three-dimensional defining data of buildings, temporary facilities, high-voltage power lines and other adjacent tower cranes in a suspension arm rotating effective radius range. According to building information model-recorded three-dimensional data information of under-construction building surrounding stationary objects and moving objects, and a hook three-dimensional moving trajectory determined by a hook own rotary plane and a hook lifting height, a three-dimensional space for the hook to safely operate is calculated, possible collisions are evaded, and safety accidents is prevented from happening.

MU-MIMO and CoMP have potentials to increase the cell capacity by many folds. Interferences and channel feedback overhead, however, severely limits such potentials. Method of reference signal-based grid of beams (RS-GOB) is described. RS-GOB distributes the effective antennas of a base station into multiple beams, thereby significantly reducing the feedback overhead of CoMP and making effective use of CoMP to turn the interferences into cooperating useful signals. RS-GOB also reduces the need for small HetNet cells, which mitigates the interferences of small HetNet cells on macro cells.

Even when the effective radii of wheels differ from each other because of a change in tire pneumatic pressure, the difference in driving force between left and right drive wheels are substantially zeroed to suppress a turning force to thereby increase the traveling stability. The use is made of a corrector for correcting a command value to be outputted to a drive circuit for an electric drive motor for each of the drive wheels. This corrector receives the steering angle, the respective numbers of revolutions of the drive wheels and an electric drive motor current and corrects with the use of the steering angle as measured with respect to a traveling direction so that command values relative to the drive wheels may have such a relation that the turning force induced in a vehicle as a result of the difference in effective radius between the drive wheels can be suppressed.

The invention relates to an effective soil pore diameter and distribution parameter testing method. The method is applicable to quantifying soil pores and distribution of the soil pores. The method comprises the steps that firstly, the porosity and permeability coefficients of a soil sample are tested; secondly, the pore tortuosity of the soil sample is tested; thirdly, a breakthrough curve of the soil sample is tested; fourthly, the maximum effective radius and the minimum effective radius of the pores of the soil sample are calculated; fifthly, the average effective pore diameter of the soil sample is calculated; sixthly, the pore diameter distribution parameters of the soil sample are calculated. The effective pore diameter and distribution of the soil sample are tested, operation is easy, and the testing cost is low; on the basis of the breakthrough curve of the soil sample on water, the soil pore diameter and distribution are analyzed, and the influence of dead end pores on a testing result can be avoided; compared with a mercury intrusion method, the size of the soil sample is large, and the test result can effectively reflect macro parameters of soil.