33results about How to "Flexible correction" patented technology

A dynamic spacer is provided for measuring flexion-extension gap during total knee arthroplasty. The dynamic spacer is an improved surgical instrumentation system that it easy to use, simple in construction, and accurately measures flexion-extension gaps under repeatable soft tissue tension. The dynamic spacer generally comprises a first planar member having a lower tissue engaging surface, a second planar member having an upper tissue engaging surface. A tensioner is disposed between the first planar member and the second planar member for applying a tensile force acting upon the first and second planar members. The tensioner is fixedly attached to the first and second planar members, such that the first planar member is held substantially parallel to the second planar member in the absence of compressive load. The dynamic spacer allows for accurately measuring flexion-extension gaps and angular deviation in flexion indicating the appropriateness of femoral rotation.

A lock structure comprising a male connector housing, a female connector, an elastic lock arm, a lock-retaining portion and a correction portion. The female connector housing is to be fitted with the male connector housing in an opposing manner. The elastic lock arm is provided on one of the male and female connector housings and has a lock projection. The lock-retaining portion is provided on the one of the male and female connector housings that is not provided with the elastic lock arm. The lock projection of the lock arm is engageable with the lock-retaining portion. The correction portion corrects elastic deformation of the lock arm when the male and female connector housings are fitted together.

The invention provides a method for non uniformity correction of range finding of an array push-scan type laser radar. An array push-scan type laser radar with N laser channels are used for detecting a target plate, the relative position of the array push-scan type laser radar and the target plate is changed, and the target plate is detected for M times, so laser radar data and total station data corresponding to each laser channel are obtained. By carrying out operation like coordinate transformation, a non uniformity correction model is established, and an actual range finding value of any one laser channel is used as a reference correction value to correct actual range finding values of other laser channels.

The invention discloses a pipe jacking construction method. The pipe jacking construction method is characterized by comprising the steps that firstly, surveying and setting out are carried out; secondly, working well construction is carried out; thirdly, assembling type back wall installation is carried out; fourthly, a guide rail is installed; fifthly, a main jacking jack is installed; sixthly, a pipe jacking auxiliary device is installed; seventhly, a pipeline is jacked; eighthly, deviation is rectified, and mould weights are stacked at the front end of a water draining pipe to increase the weight of a pipe section; ninthly, coming out of a hole is carried out. According to the pipe jacking construction method, the horizontal deviation and high-level deviation of a pipe jacking axis are effectively controlled, the stability of an excavation face can be effectively kept, the disturbance on the soil body around a pipe body is small, and the pipeline floating is avoided.

A system for warning lane departure includes a lane extracting module configured to receive a driving image of a vehicle from an image photographing module and generate an extracted lane image by removing an image other than a lane from the input image at least partially to extract a lane, a lane recognizing module configured to draw a linear functional formula corresponding to the extracted lane from the extracted lane image generated by the lane extracting module, and a lane departure determining module configured to determine lane departure of a vehicle by using the linear functional formula drawn by the lane recognizing module.

The present invention relates to a pipe-jacking tunnelling machine, in particular to an active-type automatic deviation rectification device of the pipe-jacking tunnelling machine. The device can realize automatic, highly efficient, safe and reliable deviation rectification according to deviations of proceeding direction of the pipe-jacking tunnelling machine with respect to a pipeline designed axis. Deviation rectification output force of a hydraulic cylinder is weak; the active-type automatic deviation rectification device of the pipe-jacking tunnelling machine is capable of being used for curve pipe-jacking tunneling; technical basis for automation pipe-jacking tunnelling of the pipe-jacking tunnelling machine is provided; and problems of unsuccessful deviation rectification and low deviation rectification efficiency caused by misjudgments of operators or operating instruction input errors which are caused by influences of factors such as ever-changing construction conditions, extremely high labor intensity and insufficiency in operating experience or negligence of operation personnel are avoided; and therefore, pipe-jacking tunnelling efficiency is raised and quality of pipe-jacking construction is improved.

The present invention provides a shock absorber with compliant members. Shock absorption is provided by the bending and rebound of curved, flexible arms. The deflection and the damping capabilities of the shock absorber are determined by the dimensions, curvature, and material modulus of elasticity of these compliant members. The shock absorber with compliant members technology may be applied to a bicycle front fork shock absorber and a rear shock absorber, both described herein. The benefits of a shock absorber with compliant members are that it is light-weight, it is simple in design, it has few movable joints, it can be designed to have precise flexion and damping characteristics, and it is resilient in harsh conditions.

An off road vehicle comprises a front frame joined to a rear frame by a swivel rotates about a longitudinal axis. Springs are mounted to a horizontal planar structure and to the rear frame. The springs maintain the front frame to rear frame alignment but allows rotation between the front frame and the rear frame. A steering column extends upwardly and forwardly from a front axle having two wheels mounted laterally therefrom. The is connected to the two front wheels to turn in a desired direction. Front springs connect the axle to the steering column. A pair of shock absorbers connect the axle proximate to the wheels and the steering column. The pair of front springs and the pair of shock absorbers, in combination, maintain the front frame alignment to the axle but allow rotation between the front frame and the axle.

The invention relates to a fisheye image correction method and device. The fisheye image correction method comprises the steps of acquiring an optical imaging center of an initial fisheye image to becorrected, and converting image coordinates of the initial fisheye image into image physical coordinates; performing correction on the initial fisheye image according to a preset mapping relation to obtain a longitudinal repair image of the initial fisheye image; performing a primary rotation operation on the longitudinal repair image to obtain a rotated image, wherein the rotating angle of the primary rotation operation is odd times of 90 degrees; performing correction of the rotated image according to the mapping relation to obtain a preliminary repair image of the initial fisheye image; andperforming a secondary rotation operation on the preliminary repair image to obtain a target corrected image of the initial fisheye image, wherein the secondary rotation operation and the primary rotation operation are identical in angle and opposite in direction. According to the invention, the reading and writing efficiency of a memory in the image correcting process is improved, and the correcting process is simple and flexible.

The invention relates to the technical field of hot continuous rough rolling, in particular to a rolling mill unit deviation rectification control method and device. The rolling mill unit deviation rectification control method comprises the steps that for a first rolling mill unit comprising a first vertical rolling mill and a first horizontal rolling mill, in the process of reciprocating rolling of band steel through the first rolling mill unit, at an odd rolling pass, according to the change of rolling force deviation of the first horizontal rolling mill, a first levelling compensation value is obtained, a roll gap of the first horizontal rolling mill is adjusted, a first deviation rectification compensation value is obtained, the center line of the first vertical rolling mill is adjusted, according to the change of the rolling force deviation of the first vertical rolling mill, a second levelling compensation value is obtained, and the roll gap of the first horizontal rolling mill is adjusted; during an even rolling pass, according to the change of the rolling force deviation of the first horizontal rolling mill, a third levelling compensation value is obtained, and the roll gap of the first horizontal rolling mill is adjusted. By the adoption of the rolling mill unit deviation rectification control method and device, crossing stereoscopic deviation is conducted on the band steel in the longitudinal direction and the transverse direction, and the deviation rectification accuracy is improved.

A jitter correction method and a jitter correction apparatus are disclosed. The jitter correction method comprises: after the electronic device is connected to the jitter correction device, starting the magnetic field generating means to generate a magnetic field, and adjusting the integral center of gravity of the electronic device, the connecting member and the balance terminal connected to eachother by the force of the magnetic field on the balance terminal to maintain a balance between gravity and magnetic field force; obtaining an initial image when the balance terminal is at an initialposition and a detection image thereafter based on photoelectric detection; determining a motion mode and a motion amount of the balance terminal based on the difference when the initial image is different from the detection image; and adjusting a magnetic field based on the motion mode and the motion amount to restore the balance terminal to an initial position.

The invention discloses a method for adjusting a plane reference of parts. The method comprises the following steps of: putting a plane adjusting jig on a workbench; putting workpieces on the plane adjusting jig; measuring the parallelism of the workpieces by using a dial indicator; and adjusting the height of the plane adjusting jig. By the method, the reference plane of the workpieces is corrected accurately, quickly and flexibly.

The invention relates to a particle energy adjustment system (1) for variably changing the energy of a particle beam (2, 10). The particle energy adjustment system (1) is provided with a variable energy variation device (8) having a control value correction unit (7) for correcting a supplied control value (11). The control value correction unit (7) corrects the supplied control values (11) using previously determined calibration data (15).

The invention discloses a method for correcting an optical coherent tomography scanning image edge line and a device thereof. The method comprises the steps that S101, an OCT image edge line currently needed to be corrected by a user and three control points used for describing a control curve are confirmed; S102, when the state of the OCT image edge line currently needed to be corrected is a correctable state through judgment, the control points needed to be moved of the three control points are confirmed according to location of a mouse pointer when the user presses a left mouse button; S103, after the user presses the left mouse button and slides the mouse pointer, the coordinates of location of the mouse pointer after sliding are recorded to be the coordinates of the control points needed to be moved after movement; the step S102 and the step S103 are repeated until the coordinates of the three control points are recorded completely; and S104 the OCT image edge line currently needed to be corrected is described again according to the recorded coordinates of the three control points. A smooth OCT image edge line can be obtained via the method. The correction process is convenient, flexible, accurate and highly-efficient so that the accurate OCT image edge line can be rapidly and conveniently obtained.

The invention discloses a position correction device for machining and feeding of an aluminum template and a correction method thereof, relates to the technical field of machining auxiliary devices of aluminum templates, and aims to solve the problems that according to a conventional correction device, the aluminum template is easily damaged in the adjusting process and the adjusting accuracy is poor. A first position correction block is mounted at one side of the upper end surface of a movable base, a second position correction block is mounted at the other side of the upper end surface of the movable base, mounting blocks are arranged in the first position correction block and the second position correction block, wheel body mounting grooves are formed in the mounting blocks, six adjusting wheels mounted at equal intervals are arranged in the wheel body mounting grooves, second sliding grooves are formed in the lower ends of the interiors of the first position correction block and the second position correction block, extension plates are mounted in the second sliding grooves in a sliding mode, and clamping fixing blocks are integrally arranged at one ends of the extension plates.

The invention discloses a DC offset cancellation circuit and method. The DC offset cancellation circuit comprises an offset cancellation module, an amplifier group and a phase inverter structure, the inverter structures are connected between the two amplifier groups, one end of each amplifier group is connected with a signal input end, and the other end of each amplifier group is connected with a signal output end; an offset elimination module is arranged between the input end and the output end of each amplifier group; the structure of the circuit is different from an existing offset elimination circuit structure, common-mode voltage can be corrected, differential-mode offset can be corrected, and the working reliability of the circuit is improved. An output DC point is stabilized at an optimal bias point in a single-end bias mode, and for an amplifier with an inverter structure, it can be ensured that the amplifier works in a state with the best linearity, and then the requirement for the linearity of a whole circuit is met. Static power consumption can be greatly reduced by the Class AB output stage, waste of current on a transconductance tube is avoided, and the driving capability is much stronger than that of a single transconductance tube.