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32 results about "AMAX" patented technology

AMAX is an American certification program developed by the Electronic Industries Association (EIA) and the National Association of Broadcasters (NAB) in 1993. This quality control program addressed both consumer receiver developments and air chains of broadcast AM transmission stations. Tuners and receivers offering AMAX Stereo were designed to capture the widest audio frequency response and stereo separation of AM stereo broadcasts, where available.

Method and apparatus for measuring blood pressure by the oscillometric technique

A method and apparatus for measuring blood pressure by the oscillometric technique. The method incorporates variable PIP's. The method comprises the steps of obtaining a value for the peak amplitude Amax of an oscillometric envelope; determining a cuff pressure, CP, which corresponds in time with Amax, this pressure representing the MAP of the subject; computing a variable value PIPSBP as a function of MAP; performing the calculation Asbp=Amax*PIPSBP to determine a systolic amplitude value Asbp along the oscillometric envelope; and determining the cuff pressure C which corresponds in time to Asbp, this value representing the systolic blood pressure (SBP) of the subject. PIP can be calculated using a piece-wise linear, polynomial, exponential or other function.
Owner:VSM MEDTECH DEVICES

Mobile terminal based tumble detecting method

The invention discloses a mobile terminal based tumble detecting method. The mobile terminal based tumble detecting method comprises the steps as follows: detecting a total accelerated velocity SVM1 and judging whether the total accelerated velocity SVM1 exceeds a set weightlessness threshold Amin; when SVM1 is smaller than Amin, detecting and synthesizing a direction signal omega1 and judging whether the direction signal omega1 exceeds a set inclination angle threshold omegamin; when the omega1 is smaller than the omegamin, detecting a total angular velocity omega and judging whether the total angular velocity omega exceeds a set angular velocity threshold omegamin; when the omega is greater than the omegamin, detecting a total accelerated velocity SVM2; when the total accelerated velocity SVM2 is greater than a set impact acceleration threshold Amax within a set detecting time t1, detecting and synthesizing a direction signal omega2 and judging whether the direction signal omega2 exceeds a set human body tumble gradient threshold omegamax; when the omega2 is less than the omegamax, indicating that the person has tumbled; processing a signal judging that the person has tumbled into a voice prompt signal and an image display signal. By referring to the feature acceleration, the human body inclination state, the angular velocity and the like in the tumble process of the human body and using a built-in sensor in a mobile phone to obtain necessary parameters, the mobile terminal based tumble detecting method can analyze and judge whether the person tumbles.
Owner:湖州帷幄知识产权运营有限公司

Method and apparatus for measuring blood pressure by the oscillometric technique

A method and apparatus for measuring blood pressure by the oscillometric technique. The method incorporates variable PIP's. The method comprises the steps of obtaining a value for the peak amplitude Amax of an oscillometric envelope; determining a cuff pressure, CP, which corresponds in time with Amax, this pressure representing the MAP of the subject; computing a variable value PIPSBP as a function of MAP; performing the calculation Asbp=Amax*PIPSBP to determine a systolic amplitude value Asbp along the oscillometric envelope; and determining the cuff pressure C which corresponds in time to Asbp, this value representing the systolic blood pressure (SBP) of the subject. PIP can be calculated using a piece-wise linear, polynomial, exponential or other function.
Owner:VSM MEDTECH DEVICES

Stator winding connection method for low-voltage high-power multipole multiphase permanent magnet synchronous motor

The invention discloses a stator winding connection method for a low-voltage high-power multipole multiphase permanent magnet synchronous motor. In the invention, for an AC (alternating current) motor of which the phase number is m, the pole number is 2p, the stator slot number is Z, phase splitting is carried out according to a pi / m electrical angle, and the maximum number of coil assemblies which can be connected in parallel in each phase is amax, in the method disclosed by the invention, each coil assembly which can be connected in parallel in each phase of the stator winding is taken as abranch, m branches of the adjacent m phases in space can be connected to form a m-phase symmetrical starlike connection group according to a rule of electromotive force phase mutual difference 2pi / m electrical angle, and then the head ends of each branch belonging to the same phase in the obtained amax starlike connection groups are connected in parallel while the amax star contacts are not connected; thus, the stator winding can be formed by connecting the amax m-phase symmetrical starlike connection groups in parallel, the total number of series turns of each coil assembly is the number of series turns of each phase winding, and the stator winding is an m-phase symmetrical winding. The method is convenient to adjust the series turns of each phase of the stator winding and the slot utilization and can reduce the circulation probably generated by the paralleled windings.
Owner:TIANJIN UNIV

Speed control method for numerical control multilayer leather cutting machine tool

The invention discloses a speed control method for a numerical control multilayer leather cutting machine tool, comprising the following steps of: (1) setting the numerical control multilayer leather cutting process including a main motion and a feed motion; and for the speed control on the feed motion, figuring out the acceleration Ja of the machine tool and deducting an acceleration formula and a speed calculation formula according to performance indexes of the feed maximum acceleration amax and the feeding maximum speed Vmax; (2) judging whether a leather material to be processed is a standard leather material or not and correcting; (3) judging whether the layer number of leather to be cut is a single layer or not and correcting; and (4) judging whether the current cutting track is a straight line or not: correcting the speed according to the radius Rx of a current path to obtain V3 and linearly calculating according to the speed in a path curvature radius interval to obtain the cutting speed of any curvature radius. The speed control on the tangential accompany motion can be realized. The speed control method is suitable for multilayer leather processing occasions and has high processing speed and efficiency optimizing degree; and the adjust error is reduced.
Owner:ZHEJIANG UNIV OF TECH

Continuous output positioning control method

InactiveCN101311866AImprove positioning control accuracyImprove debugging efficiencyControl using feedbackPosition controlSelf adaptive
The present invention discloses a continuous output positioning control method. At the beginning, the maximum acceleration speed AMAX of equipment allowed is increased to the maximum allowed speed VMAX; the equipment is closed at the point C, the speed is reduced to VCD; when the equipment moves to the point D, and the position deviation distance value is DS1, the speed keeps on reducing to VDE; when the equipment moves to the point E, the speed is shifted into the minimum speed VMIN; when the equipment moves at the point F, and the position deviation distance value is DSOFF, the speed output is switched off, and the equipment keeps on moving under the inertia effect and stops moving at the point G. The present invention discloses a novel calculation method of speed curves VCD and VDE and has high positioning control precision and the shortest movement time for arriving at the target position; the present invention discloses the method of automatically obtaining control parameters DS1, VMIN and DSOFF; the present invention also discloses the method of the self-adaptation control on the parameter DSOFF and the following control function of the positioning control.
Owner:SHANGHAI BAOSIGHT SOFTWARE CO LTD

Center hole out-of-roundness detection method of shaft parts

The invention discloses a center hole out-of-roundness detection method of shaft parts. The method includes the following steps that a spare tip of a machine tool is transformed into a three-point tip for detection; the three-point tip is arranged on a machine tool headstock for grinding a workpiece to form a headstock three-point tip; the workpiece to be subjected to center hole out-of-roundness detection is hoisted to the machine tool to be clamped and the headstock three-point type tip and the workpiece are marked with marks through a marking pen; a machine tool button is jogged, a heart-shaped clamping and poking rod of the machine tool drives the workpiece to jog and rotate; the runout value A1 of the portion closest to the shaft neck of the headstock three-point type tip is measured; the steps mentioned above are repeated, then the machine tool button is jogged again to stop the workpiece from rotating, the workpiece is poked manually to rotate clockwise by about 90 degrees, 180 degrees and 270 degrees, and the runout value A2, the runout value A3 and the runout value A4 are recorded; and the Amax-Amin difference value serves as the center hole out-of-roundness judgment value. By the adoption of the center hole out-of-roundness detection method, the precise detection purpose of center hole out-of-roundness of the shaft parts can be well achieved, and the clear and operable control requirements can be met for control over center hole out-of-roundness.
Owner:桂林福达曲轴有限公司

A pre-regulated vehicle stability control system and method

The invention relates to a pre-regulated vehicle stability control system and method. The system is composed of predictive road condition calibration subsystem, ECU (p2) and actuator. The predicted road condition calibration subsystem includes an ECU (p1) and an ECU (p2), which are first and second portions of the in-vehicle ECU, respectively. The method comprises the following steps: the vehicleidentifies the road condition in front of the vehicle through the image sensor and the network joint cooperative correction; In an ECU (p2), calculating a steering wheel rotation angle when a vehiclepasses through a bend based on the identified road curvature; In the ECU (p2), the limit vehicle speed Vmax of the vehicle passing through the bend safely with the assistance of the VSC system is calculated. In the ECU (p2), the shortest speed regulating distance X 'and the maximum brake deceleration amax of the vehicle under the control of the ABS are calculated, and the vehicle is actively braked with the limit speed as the control objective, so that the vehicle enters the curve at a driving speed lower than the limit speed.
Owner:WUHAN UNIV OF TECH

Personalized emotional contagion population animation generation method

ActiveCN106530375AClose to the real evacuation situationImprove evacuation efficiencyAnimationPersonalizationAnimation
The invention relates to a personalized emotional contagion population animation generation method. The personalized emotional contagion population animation generation method includes the specific steps: setting scene information which includes the barrier position and the barrier free area, and setting individuals in the barrier free area randomly, wherein the individuals include the individuals without emotional contagion and the individuals with emotional contagion; setting the target position of each individual; initializing the velocity and direction of movement of the individuals without emotional contagion and the individuals with emotional contagion, wherein the velocity of movement satisfies limitation of a maximum velocity vmax and a maximum acceleration amax, and vmax<=7m / s, and amax<=5m / s2; initializing the emotion value ea and the panic value qa of the individuals without emotional contagion, and the emotion value eb and the panic value qb of the individuals with emotional contagion, wherein ea=0, eb belongs to (0,1], qa=0, and qa<qb; and setting a fixed time interval as a time step, updating the emotion value and the velocity of movement of the individuals within one time step, and according to the individual emotion value and the velocity of movement of each time step, generating population animation.
Owner:SHANDONG NORMAL UNIV

A method for optimization of distribution user interface instance under the master-slave structure

This invention discloses one method to optimize and align user interface samples in main and aid structure, which comprises the following steps: computing each user interface process units of Slit, Sax, Scat and Amax; selecting process units for SMax+UMax>Slit >=SAct+UMax with maximum and equal user total number and medium process unit to establish signal connection or business require sample ending; otherwise, selecting the medium process units for Slit >=SAct+UAct to establish signal connection or business require sample and ending.
Owner:HUAWEI TECH CO LTD

Noise control method of fan of outdoor unit of air conditioner

The invention discloses a noise control method of a fan of an outdoor unit of an air conditioner. The method comprises the specific steps: a, detecting the quantity of fans by a master controller of the air conditioner and judging whether the fans are direct current fans or not, and if the quantity of the fans is greater than 1 and the fans are the direct current fans, entering the next step; b, dividing the highest rotating speed Amax to the lowest rotating speed Amin of each fan into N stages, wherein the difference between adjacent two stages is (Amax-Amin) / N; c, endowing each fan with a serial number according to the physical position where each fan is mounted; and d, during operation of a motor, the rotating speeds of the fans, the serial numbers of which are odd numbers, are the same, and the rotating speeds of the fans, the serial numbers of which are even numbers, are the same, and the stage number difference of the odd number fans and the even number fans is 1; when the grade number of any one fan is equal to 0, the fan is stopped. The method can effectively reduce noise on the premise of using the fans with uniform blades and not reducing heat transfer.
Owner:NINGBO AUX ELECTRIC

Included angle motion path planning method and included angle motion path planning device

The invention discloses an included angle motion path planning method and an included angle motion path planning device. The included angle 2theta of the included angle motion is formed by a first path and a second path. The included angle motion path planning method comprises steps that acceleration limit value Amax and acceleration change time Ts are acquired; speed F1 of a first middle point and speed F2 of a second middle point are acquired, and the first middle point is the middle point of the first path, and the second middle point is the middle point of the second path; the angular bisector direction of the included angle 2theta is set to be an X direction, and a direction vertical to the X direction is set to be a Y direction; the speed of the Y direction and the speed of the X direction are planned according to a relation between F1 cos theta + F2 cos theta and Amax Ts. Compared with the prior art, the motion speed of the included angle motion between the middle point of the first path and the middle point of the second path is planned, and the acceleration is not zero during transition, and therefore the speed is changed quickly during the transition, the time of the transition is shortened, and efficiency is improved.
Owner:SHANGHAI LYNAC NUMERICAL CONTROL TECH CO LTD

Amine oxide group-containing resin solution and resin composition for hair cosmetic preparation using resin solution

Disclosed are an amine oxide group-containing resin solution and a resin composition for a hair cosmetic preparation, comprising the resin solution. The resin solution and the resin composition are free from a problem of coloring or discoloration with the elapse of time. The amine oxide group-containing resin solution and the resin composition for a hair cosmetic preparation prepared using the resin solution satisfy the requirement that, for a sample solution prepared from the amine oxide group-containing resin solution and comprising 18% by weight of an amine oxide group-containing resin, 10% by weight of water, and 72% by weight of ethanol, the difference (da) between value a (a0) in an Lab color system and the maximum value (amax) of values a after exposure of the sample solution to ultraviolet light is not more than 5, and the requirement that, for the sample solution, the difference (db) between value b (b0) and value b (bm) when the sample solution exhibits the maximum value (amax) is not more than 9.
Owner:MITSUBISHI CHEM CORP

Design method of furnace roll profile in furnace section of continuous annealing unit

A design method of an annealing unit furnace section furnace roll shape includes steps, executed through a computer, of 1, collecting key equipment and process parameters of an unit; 2, collecting parameters of m specification strip steel samples; 3, defining relevant parameters; 4, giving initial values for the relevant parameters; 5, allowing the furnace roll boss length S to be that S = Smin + t1*Delta S; 6, allowing the furnace roll convexity delta to be that delta = delta min + t2*Delta delta; 7, allowing the furnace roll boss curve coefficient a to be that a = amin + t3 * Delta a; 8, allowing the furnace edge curve number k to be that k = kmin + t4 * Delta k; 9, calculating an average stable passing composite indicator of the m specification strip steel samples; 10, judging whether k < kmax, a < amax, delta < delta max, S < Smax are satisfied or not; 11, outputting the roll shape parameters S, delta,a and k. By the aid of the method, the strip steel is prevented from deviation and buckling, and optimal effect on stability and passing performance of conventional incoming strip steel is achieved.
Owner:唐山扬邦钢铁技术研究院有限公司

Control method for preventing hydraulic impact in advance

The invention relates to a control method for preventing hydraulic impact in advance. The method includes the following steps of setting a hydraulic system initial loading time coefficient k according to control frequency fmin and test required loading speed vy of a hydraulic system and work performance of the hydraulic system, calculating a hydraulic system initial loading time tc and the maximum initial loading acceleration speed amax, and calculating the maximum acceleration speed amax according to the hydraulic test required loading speed vy, wherein the hydraulic system has to meet the requirement that actual loading speed v is equal to the required loading speed vy and the requirement that actual loading acceleration speed a is smaller than or equal to the maximum acceleration speed amax at the same time during the hydraulic test loading process, the maximum acceleration speed amax can be loaded in a segmented gradual increasing mode, and accordingly the hydraulic impact can be prevented. By means of the method, the situation that concrete samples (components) crack and are scrapped due to the hydraulic impact is prevented, secondary harm to personnel and environment can be avoided, and reliability and efficiency of the whole system are improved.
Owner:陈俐丹

Spindle positioning device

An acceleration command calculator calculates an acceleration command “as” based on an output torque Tmb of the spindle motor applied when the rotational speed is less than or equal to a base rotational speed and an inertia Jm+Jl of the overall spindle. A switching speed calculator calculates a control mode switching speed Vs based on the acceleration command “as”. A control mode switching switch switches from a speed control mode to a position control mode when the motor speed Vm becomes less than or equal to the control mode switching speed Vs, to stop the spindle at a desired rotational position. The control mode switching speed Vs may be a value calculated using the following equation: Vs=60×(amax×0.5)1 / 2, where a maximum acceleration that can be achieved at this time is represented by a max.
Owner:OKUMA CORP

Image display method for synthetic aperture sonar system

InactiveCN101825704AThe image display effect is moderately bright and darkWave based measurement systemsSynthetic aperture sonarArray data structure
The invention relates to an image display method for a synthetic aperture sonar system, which comprises the following steps: setting a cycling storage unit with the length being M, wherein the length M is at least more than or equal to the vertical resolution of a display; taking the maximum value Amax from image data of a batch of seabed targets output by a signal processing system each time at a time, and storing the maximum values Amax into the cycling storage unit in sequence; taking the maximum value Zmax of the cycling data group each time when the cycling data group in the cycling storage unit automatically updates; and quantifying a corresponding gray scale 255 with the Zmax, wherein the value of any point in the image data is Zi, the corresponding gray scale data is Zi / Zmax * 255, and the optimal visual effect can be achieved according to the needed palette configuration. Furthermore, the brightness can be adjusted through adjusting the multiplication coefficient of the maximum value so as to adapt to different needs. The invention adopts the maximum value of the current data on the display for quantification, thereby achieving the proper image display effect.
Owner:INST OF ACOUSTICS CHINESE ACAD OF SCI

Method and system for automatically detecting deterioration of reagent

The invention discloses a method and a system for automatically detecting deterioration of a reagent. The method for automatically detecting the deterioration of the reagent comprises the following steps: setting a property parameter standard value region [Amin,Amax] of reagent blank of a to-be-detected reagent; acquiring a property parameter value X of the reagent blank of the to-be-detected reagent; automatically judging whether the property parameter value X is in the property parameter standard value region [Amin,Amax] or not, judging that the to-be-detected reagent is not in deterioration if yes, and judging that the to-be-detected reagent is in deterioration if no. In such a way, when an experiment suffers from a reagent deterioration situation by using the reagent for detection, the method disclosed by the invention can be used for quickly detecting whether the used reagent is in deterioration or not, and a project standard curve is not required to be repeatedly drawn due to too large deviation of a drawn project standard curve of the reagent, so that the experiment time is saved. The system for automatically detecting the deterioration of the reagent comprises a data storage module, a data acquisition module, a data processing module and a display, and is capable of executing the method for automatically detecting the deterioration of the reagent.
Owner:SOUTH CHINA AGRI UNIV +1

Cyclic code blind-identification method

InactiveCN101771504BFilling the gap in blind recognition technologyThe principle is simpleError preventionProgramming languageCyclic code
The invention discloses a cyclic code blind-identification method; a cyclic code whose code length is n receives L code words, identifies and generates the following polynomial under the condition without error code: g *) = gcd [c0 (*), c1 (*),. . . , CL-1 (*)] / amax, and identifies and verifies the polynomial: calculating the order to obtain the order k of h (*), that is information word length: k=deg[H (x)], the identification is ended; the method has advantages of simple principle, fast speed, and wide range of application and the like; no matter system code or non-system code, shortened code or augmented code, binary code or non-binary code, as long as the code is cyclic, and the code length is known, the cyclic code can be identified the polynomial can be generated through utilizingthe method, meanwhile, the method fills the gap of blind identification technology for cyclic code in the technical field.
Owner:INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS

Stator winding connection method for low-voltage high-power multipole multiphase permanent magnet synchronous motor

The invention discloses a stator winding connection method for a low-voltage high-power multipole multiphase permanent magnet synchronous motor. In the invention, for an AC (alternating current) motor of which the phase number is m, the pole number is 2p, the stator slot number is Z, phase splitting is carried out according to a pi / m electrical angle, and the maximum number of coil assemblies which can be connected in parallel in each phase is amax, in the method disclosed by the invention, each coil assembly which can be connected in parallel in each phase of the stator winding is taken as abranch, m branches of the adjacent m phases in space can be connected to form a m-phase symmetrical starlike connection group according to a rule of electromotive force phase mutual difference 2pi / m electrical angle, and then the head ends of each branch belonging to the same phase in the obtained amax starlike connection groups are connected in parallel while the amax star contacts are not connected; thus, the stator winding can be formed by connecting the amax m-phase symmetrical starlike connection groups in parallel, the total number of series turns of each coil assembly is the number of series turns of each phase winding, and the stator winding is an m-phase symmetrical winding. The method is convenient to adjust the series turns of each phase of the stator winding and the slot utilization and can reduce the circulation probably generated by the paralleled windings.
Owner:TIANJIN UNIV

Speed control of any override range effective over a plurality of blocks

The invention relates to a prospective speed control for electric drives encompasses a plurality of blocks. The braking force required in several subsequent control data blocks (SD) to reliably slow the feedrate down to the programmed feedrate is prospectively analysed by reproducing limiting conditions (MD) such as admissible track acceleration (amax) and block length on the required braking path (BR), so that the thus determined shortest braking ramp (BR) represents the limiting condition. The braking ramps (BR) for several parametrable override transition values (OVEW) are associated as characteristic data with each analysed control data block (SD) in a data storage (P2) and are interpolated between the determined characteristic data (BR) in an interpolator (I) according to an actual predetermined override value (Kist) in order to derive therefrom the end-of-block speed required to avoid an excessive feedrate in the subsequent block.
Owner:SIEMENS AG

A method for identifying the type of capacitive touch

The invention relates to a method for recognizing the touch type of a capacitor. The method comprises the following steps of firstly, setting coefficient thresholds kfinger_th and kpalm_th; secondly, finding out a sensing point with maximum electrical change within a touch range and setting the sensing point as a center point when a data value of the sensing point is greater than a preset threshold; thirdly, intercepting a data value of each sensing point in an n*n matrix around the center point; fourthly, sequentially circulating the data value of each sensing point except the center point within the n*n matrix and finding out a minimum value Amin and a maximum value Amax, wherein sensing points which respectively correspond to the Amin and the Amax are a small sensing point and a great sensing point; fifthly, accumulating data values of various sensing points except the center point, the small sensing point and the great sensing point in the n*n matrix to obtain Asum; sixthly, calculating a coefficient k of the center point with a data value A of the center point as a cardinal number; seventhly, comparing and judging the coefficient k with the kfinger_th and the kpalm_th to determine the touch type of the capacitor. According to the method disclosed by the invention, the touch type of the capacitor can be recognized accurately and quickly.
Owner:ZHUHAI ZHONGHUI MICROELECTRONICS

Determining the liver function by quantitatively measuring the metabolism of substrates

The invention provides a method for determining the function of the living beings, particularly the function of a liver. The method comprises the steps of taking a substrate marked with 13C, with the substrate being converted via the liver to release at least one 13c-marked metabolite and utilizing at least one measuring device having at least one evaluation unit to determine the content of at least one 13C marked metabolite in the exhaled air during a certain time interval. With this method, a differential equation of first order can be used to describe the measured initial rise of the content of at least one 13C marked metabolite in the exhaled air. Moreover, the maximum concentration Amax (DOBmax) and the rising time constant tau of the content of the 13C marked metabolite can be determined via the differential equation of first order.
Owner:HUMEDICS

Speed control method for numerical control multilayer leather cutting machine tool

The invention discloses a speed control method for a numerical control multilayer leather cutting machine tool, comprising the following steps of: (1) setting the numerical control multilayer leather cutting process including a main motion and a feed motion; and for the speed control on the feed motion, figuring out the acceleration Ja of the machine tool and deducting an acceleration formula anda speed calculation formula according to performance indexes of the feed maximum acceleration amax and the feeding maximum speed Vmax; (2) judging whether a leather material to be processed is a standard leather material or not and correcting; (3) judging whether the layer number of leather to be cut is a single layer or not and correcting; and (4) judging whether the current cutting track is a straight line or not: correcting the speed according to the radius Rx of a current path to obtain V3 and linearly calculating according to the speed in a path curvature radius interval to obtain the cutting speed of any curvature radius. The speed control on the tangential accompany motion can be realized. The speed control method is suitable for multilayer leather processing occasions and has highprocessing speed and efficiency optimizing degree; and the adjust error is reduced.
Owner:ZHEJIANG UNIV OF TECH
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