42results about How to "Short correction time" patented technology

A contact lens is fitted to a cornea of a patient's eye to gradually alter the patient's cornea during continued wear to reshape the cornea to reduce the hyperopia and / or presbyopia condition. The contact lens has a plurality of zones that includes one or two optical zones, a plateau zone, a fitting zone, an alignment zone and a peripheral zone. The one or more optical zones are utilized to redistribute cornea tissue to cause the cornea to have a steepened central portion surrounded by a flat mid-peripheral ring The plateau zone helps steepening the central cornea by two ways: a positive molding effect of pushing the cornea tissue inward to pile up and a negative molding effect to flatten the mid-peripheral cornea for enhancing.

The invention discloses an inertial positioning method and an inertial positioning system using vision-aided corrosion. The inertial positioning system comprises an inertial sensor, a positioning identifier, an image pickup module, an image processing unit and a correcting unit, wherein the positioning identifier is used for identifying a positioning point; the image pickup module is used for obtaining image information of the positioning identifier. The image processing unit is used for calculating space position information according to the image information generated by the image pickup module and transmitting the space position information to the correcting unit; the correcting unit is used for carrying out correction on sensed data of the inertial sensor according to the space position information. The inertial positioning method comprises the steps of arranging the image pickup module and the positioning identifier which are separate, wherein the image pickup module is arranged at the correcting end and the positioning identifier is arranged at the inertial sensor end; or the positioning identifier is arranged at the correcting end and the image pickup module is arranged at the inertial sensor end; picking up the positioning identifier by utilizing the image pickup module, and calculating according to the pickup result to obtain the correction data; correcting the sensed data of the inertial sensor by utilizing the correction data. The inertial positioning method has the advantages of being short in correction time, accurate in correction, less in power consumption and the like.

The invention discloses an equal-scale optical rectification method for a panoramic optical image, which belongs to the fields of measurement of aviation and spaceflight images and aims at providing the equal-scale optical rectification method for the panoramic optical image by adopting pure optical rectification to directly rectify while the image is output. The equal-scale optical rectification method comprises the following rectification process that panoramic negative pieces enclose to form a circular arc shape, wherein the circle center surface of the circular arc faces to a rectification lens, and the circle center is positioned on a primary optical axis; photographic paper is in a hyperbolic curve shape; the scale of each point on the image formed on the photographic paper is identical and is the ratio the focus length to the height of the camera; an imaging light source can use a planar light source; the photographic paper is simultaneously exposed; the rectification is carried out by using different optical axial magnification powers; and the full piece is rectified into an image with the same scale as that of the optical axis. According to the equal-scale optical rectification method disclosed by the invention, the film type panoramic image is purely and optically rectified at equal scale (focus length of the camera / flying height) and a vertical image is formed after rectification. The equal-scale optical rectification method is mainly used for rectifying the negative piece image formed by a panorama camera.

The invention relates to a partial shape correction method for titanium alloy components, which belongs to the technical field of titanium alloy shape correction. The invention adopts the electromagnetic induction heating technology to carry out thermal deformation correction to the titanium alloy component, which includes the positioning of the component correction area, the fixing of the component in the correction mold, the fixation of the correction region, the correction and annealing treatment. The method is easy to operate, can correct the shape of large, thin-walled or curved titanium alloy components, and has dual functions of internal pressure and external expansion of the titanium alloy components. The temperature of component shape correction is low, and it can be carried out in the atmosphere without protective atmosphere, which can effectively solve the problem of low efficiency of vacuum high temperature shape correction of titanium alloy components.

The invention discloses a device for correcting curvature radius of a roller table at a bending segment of a continuous casting machine. The device comprises a roller spacing measuring device and a data processing device, wherein the roller spacing measuring device comprises a support, a fixed scale fixed on the support, a movable scale movably arranged on the support, a laser measuring head arranged on the movable scale and an operational processor, the laser measuring head acquires measured data from the fixed scale and the movable scale and transmits the data to the operational processor, and the operational processor calculates the spacing between the roller tables at the neighboring bending segments according to the measured data; and the data processing device calculates a corrected value of the curvature radius of the roller table at the segment according to the spacing between the roller tables at the neighboring bending segments which is detected by the roller spacing measuring device. By utilizing the device and the method for correcting the curvature radius of the roller table at the bending segment of the continuous casting machine, the curvature radius of the roller table at the bending segment of the continuous casting machine can be automatically corrected with high accuracy, short correction time and high efficiency so as to effectively improve the production efficiency of the continuous casting machine and produce considerable economic benefit.

The invention relates to an automatic compensation method for voltage change of an electric energy meter, which is initialized after power-on to obtain an initialized power error correction gain value and an initialized power offset correction gain value; a programmed power source outputs rated voltage Un and current λIb to the meter to be calibrated , power factor 1.0; the MCU to be calibrated automatically calculates the apparent power by obtaining the active power and reactive power of the calibrated meter; calculates the power error and power error correction gain value of the calibrated meter; calculates the power offset correction gain value; when the errors between the corrected active power, standard active power and reactive power, and standard reactive power are all within the allowable range, keep the current and power factor unchanged, and change the programmed power source to the Calibrate the output voltage of the meter, use different output voltages to calibrate the meter. It only needs to correct the power error, and it is suitable for the measurement of the electric energy meter when the current is small. The electric energy meter has high measurement accuracy and improves the meter calibration efficiency.

By attaching clothes while correcting the imbalance in the low-speed rotational speed range of the dehydration process, it is possible to shorten the unbalance correction time of large garments such as blankets, or when combining blankets of different materials, and provide a front-loading washing machine that suppresses increases in dehydration time and power consumption. and a tumble washer dryer. It includes: a rotatable drum whose rotation axis is horizontal or inclined with the depth side at the bottom; an outer tub that encloses the drum and is used to store washing water; a shell that encloses the outer tub; judges the laundry in the drum The judging mechanism of the attached state and the imbalance judging mechanism of the first dehydration operation carry out the judgment of the attached state of the clothes and the judgment of the imbalance, and when the imbalance is greater than the threshold value of the imbalance judging mechanism, according to the first time The rotation control of the second and subsequent dehydration operations to restart dehydration is set based on the determination of the attached state of the clothes in the dehydration operation, and the rotation control of the second and subsequent dehydration operations is different from the first dehydration operation.