111results about How to "Reduce adjustment error" patented technology

The invention relates to a method for adjusting a single stand reversible rolling mill, in particular to a method for adjusting housings outside the single stand reversible rolling mill, which comprises the following steps: a, determining that a housing base reaches assembly accuracy, and suspending the housings to correct positions; b, hanging a steel wire, checking vertical and transverse central lines of the rolling mill; c, connecting earphones to the vertical and transverse central lines of the rolling mill by lead wires; d, moving housings on a transmission side and an operation side towards the housing base direction on a discharge side respectively by a hydraulic jack to ensure that a bracket side of the housings is close to the lateral surface of the base on an outlet side, and moving a rail rest on an inlet side towards the outlet side; e, adjusting sizes of the housing rolling center and the transverse center of the rolling mill, and fastening a foundation bolt by 70 percentof a design torque; and f, hanging steel wires on housing windows and the rolling directions of the housings, and measuring the verticality and the horizontality of the windows and the rolling directions of the housings of the rolling mill. The method uses the steel wires and the earphones to ensure numerical reading, eliminates reading errors caused by visual errors of staff, and improves the assembly accuracy of equipment.

A method for controlling emission power to realize object S ¿C N ratio to be quickly converged includes setting initial valve of step size, receiving data block and storing CRC calibration result, adjusting object S ¿C N ratio as per calibration result i.e. down ¿C adjusting one step size of object S ¿C N ratio if calibration result is correct or otherwise up ¿C adjusting one step size of object S ¿C N ratio, comparing object S ¿C N ratio with measured S ¿C N ratio to generate TPC command being sent to emission end for adjusting its emission power, entering said adjusting step if CRC calibration result is not changed or otherwise ending quick convergence of object S ¿C N ratio.

The invention discloses a detection device and detection method for measuring long-focal-length lens transmission wavefront by a computer-generated holography, and belongs to the technical field of optical measurement. The detection device is mainly characterized in that an interferometer, a measured long-focal-length lens and a Fresnel wave zone plate form a Fizeau interference optical path; when collimated parallel light output by the interferometer passes through a standard plane mirror, one beam is reflected by a reference surface of the standard plane mirror to form a standard reference light beam; the other beam penetrates through the measured long-focal-length lens to be transmitted and is reflected through the wave zone plate to return along the original path for forming a test light beam; the test light beam and the standard reference light beam generate interference; the tested long-focal-length lens is regulated, so that interferometric fringes are minimum; the transmission wavefront of the tested long focal-length lens can be obtained through measurement. The method and the device provided by the invention are applicable to the detection of the long-focal-length lens transmission wavefront.

The invention discloses an aligning device and an aligning method for a partial compensating lens during detection of aspheric surface and nonzero digit interference. The aligning device is characterized in that a fine light beam emitted by a laser is expanded by a collimating beam expanding system to form parallel broad light beams; after parallel light enters a beam splitter on which a part reflective semitransparent film is plated, one part of incident light is reflected and the reflected light beam is reflected by a plane reference mirror and then returns to the beam splitter again; the other part of incident light is transmitted and the transmitted light beam forwards spreads and enters an auxiliary aligning panel and then returns; the returned reflection light and the returned transmission light meet at the beam splitter to generate interference and form an interference pattern; the interference pattern passes through an imaging system and images at a detector; and the inclination of the aligning panel and the partial compensating lens, which are relative to the incident light, is adjusted, so that the detector obtains a zero-fringe interference pattern; and the inclined alignment of the partial compensating lens is realized by moving the aligning panel. According to the aligning device and the aligning method disclosed by the invention, the problem of aligning error of the partial compensating lens during detection of the aspheric surface and nonzero digit interference is solved and the adjustment error of the detection result caused by mistaken alignment is reduced.

The invention relates to an X-ray focus lens vertical installation and adjustment system and method, which solves the problems that the gravity introduced in the assembling process of a focus lens tube influences a facial form and the assembling precision is relatively low. The X-ray focus lens vertical installation and adjustment system comprises a parallel light tube, a focus lens tube, a focuslens installation and adjustmentassembling system, a semitransparent semi-reflective mirror, a reflection mirror, a receiving screen, a CCD camera and a computer; the focus lens installation and adjustmentassembling system comprises a fixed disc, a micrometer head, a suspension rope and a pulley, the pulley is fixedly arranged on the fixed disc, one end of the suspension rope is connected with themicrometer head, and the other end is connected with the focus lens tube; and the outgoing light of the parallel light tube perpendicularly enters the focus lens tube, the outgoing light of the focuslens tube is divided into two beams by virtue of the semitransparent semi-reflective mirror, one beam directly enters the receiving screen, the other beam is reflected by the reflection mirror to receiving the screen, the two beams of light form the centroid of focal spot in front of and behind a focus, and the CCD camera records and transfers the centroid of focal spot to the computer. The invention also provides an installation and adjustmentassembling method based on the system.

The invention discloses a simple concrete wall surface trowelling machine comprising the following structures: a transverse track; a vertical track capable of sliding left and right in the transverse track; a mobile rack including a rack body and a plurality of first roller wheels, wherein the plurality of first roller wheels are respectively arranged on two sides of the rack body, and the first roller wheels can reciprocate and elevate in the vertical track; a trowelling device comprising a trowelling plate and a push mechanism, wherein the push mechanism is arranged on the rack body, the trowelling plate is arranged in the front end of the push mechanism, and the push mechanism can drive the trowelling plate to move back and forth; a lifting device arranged on the top of the vertical track, and the lifting device can drive the mobile rack to reciprocate and elevate in the vertical track. The lifting device can drive the trowelling device to reciprocate and elevate on the wall surface, thus trowelling the wall surface, and reducing the personnel working intensity; the trowelling device can move left and right along the vertical track, thus improving the wall surface evenness and smoothness.

The invention belongs to a fiber optic gyroscope technology, and relates to a closed loop fiber optic gyroscope minimum step control method. The method comprises the following steps: establishing accurate model parameters according to the work principle and framework of a digital closed loop fiber optic gyroscope; establishing the discrete control model of the whole control system of the closed loop fiber optic gyroscope, and obtaining the control model of the controlled object of the gyroscope; calculating based on the principle of a minimum time response controller according to the type of an input signal to obtain a minimum step controller of the fiber optic gyroscope; and designing the corresponding minimum step controller directed against a step input signal and a slope input signal as needed to make the gyroscope trace input signals after 2 and 3 control periods. The minimum step closed loop fiber optic gyroscope controller disclosed in the invention reduces the trace delay time of the fiber optic gyroscope to dynamic signals, reduces the dynamic trace error, improves the use performance of the fiber optic gyroscope in dynamic input environment, and improves the environment adaptability of the fiber optic gyroscope.

The invention discloses a method for measuring and adjusting the spatial position relationship of multiple positioners. The method comprises the steps of: respectively measuring the coordinates of a positive limiting point and the coordinates of a negative limiting point on a reference X axis, a reference Y axis and a reference Z axis through a reference positioner, obtaining the spatial positionsof the reference X axis, the reference Y axis and the reference Z axis, and building a reference coordinate system; measuring the coordinates of the positive limiting point and the coordinates of thenegative limiting point on a positioner X-axis, a positioner Y-axis and a positioner Z-axis respectively through an adjustment positioner, and then obtaining the spatial position relations between the positioner X-axis and the reference X-axis, between the positioner Y-axis and the reference Y-axis, and between the positioner Z-axis and the reference Z-axis, and calculating the adjustment amountsbetween the positioner X-axis and the reference X-axis, between the positioner Y-axis and the referenceY-axis, and between the positioner Z-axis and the reference Z-axis respectively, and then accurately, conveniently and quantitatively adjusting the spatial positions of the positioner X-axis, the positioner Y-axis and the positioner Z-axis so as to enable errors among positioners to reach standards.

The invention relates to a large-relative-aperture high-precision refraction-reflection star sensor optical system, which belongs to the technical field of optical systems, and overcomes the problems of the prior art. The optical system is provided with a front mirror group with positive focal power and a rear mirror group with a positive focal power, which are arranged in sequence according to the incidence direction of the light, wherein the front mirror group consists of a secondary reflecting mirror and a main reflecting mirror; the rear mirror group consists of a first convex-concave lens, a second convex-concave lens, a third convex-concave lens and parallel plate glass, and the first convex-concave lens, the second convex-concave lens and the third convex-concave lens are all spherical lenses; an air interval between the secondary reflecting mirror and the first convex-concave lens is 68.034, the air interval between the secondary reflecting mirror and the main reflecting mirror is 72mm, the air interval between the first convex-concave lens and the second convex-concave lens is 0.5mm, the air interval between the second convex-concave lens and the third convex-concave lens is 2.013mm, and the air interval between the third convex-concave lens and the parallel plate glass is 7.328mm.

The invention discloses a focusing lens and a vibrating mirror type laser scanning system. The focusing lens comprises a flat concave lens and a convex lens, the flat concave lens comprises a plane and a concave surface arranged opposite to the plane, and the convex lens which is arranged fixedly comprises a first convex surface and a second convex surface arranged opposite to the plane; the flat concave lens can move in the axis, and light is input via the plane of the flat concave lens, passes the concave surface of the flat concave lens and the first convex surface of the convex lens successively, and is output via the second convex surface of the convex lens. The focusing lens is simple in structure and low in the adjusting error; the focusing lens has no real focus and thus, can be kept in a relatively low temperature; and when the waist radius of an input laser beam of the vibrating mirror type laser scanning system is greater than 7.5mm, the distance between a laser and the focusing lens does not influence the focusing effect.

The invention relates to a method for operating a control device (12) for a braking system (14) of a motor vehicle (10), wherein the control device (12) receives a braking request (16) from a driver assistance system (11) and determines a target value (21) of a braking operation parameter of the braking system (14) and determines an ideal temporal process (22) for the braking operation parameter,which gradually leads to the target value (21), complying with a predetermined jerk criterion (24), and a determines a control fault (29) of an actual value (25) of the braking operation parameter inrelation to the ideal process (22) and determines a request value (18) for a controller (20) of a brake pressure pump (19) of the braking system (14) from the control fault (29) on the basis of a controller unit (PI). According to the invention, the control device (12) determines a maximum achievable temporal gradient (27) of the braking operation parameter by means of the brake pressure pump (19)and examines whether the gradient (27) fulfills a freezing criterion (33) and, in the case of the freezing criterion being fulfilled, limits at least one control operation parameter (31) of the controller unit (PI) and/or a gradient of the brake request (16).

The invention discloses a film cutter capable of being adjusted in multiple directions. The film cutter comprises a cutter shaft, fixing grooves are formed in the surface of the cutter shaft in the axial direction, cutter sets are arranged on the surface of the cutter shaft at intervals, rotating sliding blocks are connected to the two ends of the cutter shaft, sliding grooves are formed in the rotating sliding blocks, and rotating sliding block holes are further formed in the ends, close to the sliding grooves, of the rotating sliding blocks; and the rotating sliding blocks are slidably connected with fixing blocks, rotating notches are formed in the fixing blocks, fixing holes are formed in the centers of the bottom faces of the rotating notches, and rotating grooves are formed between the fixing holes and the inner walls of the rotating notches. According to the film cutter, the cutter shaft, the rotating sliding blocks and the fixing blocks are connected in a matched mode, pairwisemutual rotation is achieved, adjustment of the three-dimensional spatial position of the cutter on the cutter shaft is achieved, and multi-angle and multi-direction changes are achieved; and angles are engraved on the surfaces of the fixing blocks, accurate adjustment can be achieved according to the angles, and adjusting errors are reduced.

The invention discloses an intelligent internal fistula bandage. The intelligent internal fistula bandage comprises a bandage body, a pressure sensor, a blooding sensor, a controller and a touch screen, wherein the pressure sensor and the blooding sensor are arranged on a first surface and are connected with the controller electrically; the touch screen is arranged on a second surface and is connected with the controller electrically; the controller comprises a memory and a processor; an executable code is stored in the memory; and the executable code can complete the following steps through execution by the processor: obtaining the current pressure value of the patient through the touch screen, creating a pressure adjusting scheme for the patient according to the pressure value and displaying the pressure value in current hemostasis stage and the time remaining through the touch screen, and specifically, the pressure adjusting scheme includes a reference pressure value and time of duration for each hemostasis phase of the patient. According to the bandage, more accurate and more standard pressure adjustment is achieved; the pressure adjustment does not depend on the experience ofusers and the adjustment error is small.

The invention relates to an energy-saving comfortable intelligent building system. The building system comprises a glass curtain wall, a ventilation or air purifying unit, a temperature adjusting unitand an illuminating unit, further comprises a barrier film and a dimming layer combined with the glass curtain wall, and further comprises an outdoor sensing unit, an indoor sensing unit and a central control unit for controlling at least one of the ventilation or air purifying unit, the temperature adjusting unit, the illuminating unit and the dimming layer according to signals provided by the outdoor sensing unit and the indoor sensing unit; the indoor sensing unit comprises an indoor temperature sensor, an indoor air quality sensor and a brightness sensor; and the outdoor sensing unit comprises an outdoor temperature sensor and an outdoor air quality sensor. The building system can greatly reduce consumed resources needed to keep comfortable environments for buildings, achieves higherenergy saving effect, and can radically promote the energy resource saving and reasonable utilization.

The invention discloses a device and a method for installing and adjusting reference grating of lithography equipment. The device sequentially comprises a laser source, a vibrating mirror, a reflecting mirror, a first lens group, a diaphragm and second lens group according to the light beam propagation direction, which are used for adjusting the reference grating to the focal plane, and the device further comprises a light intensity adjusting and calibrating unit which is used for adjusting the intensity of the light beam outputted by the laser source..