40results about How to "High precision and reliability" patented technology

The present invention relates to a method for controlling a self-propelled robot device, such as a robot device for mowing grass, and a control system that carries out the aforementioned method. According to the invention, the self-propelled robot device is driven by an inertial navigation system for a set time period or distance and the device is periodically stopped for rectifying the position and advancing course thereof by a satellite detection system: the periodic correction of the inertial navigation system using satellite detections thus prevents course errors from accumulating. The correction based on the satellite detection system can be possibly optimized through a further selection of the obtained values according to a statistical basis. Preferably, the control method according to the invention also provides a procedure for detecting, recording and mapping the operating region wherein the device is operated.

The present invention relates to an image processing device and method, a program, and a recording medium whereby the evaluation regarding the reliability of a motion vector can be performed even in the case of an average brightness level between frames changing greatly. On a frame t+1, a block B1 at the position shifted from a pixel p1 to which a pixel p0 on a frame t corresponds by the vector quantity of a correct motion vector v1, and a block B2 at the position shifted from the pixel p1 to which the pixel p0 corresponds by the vector quantity of an incorrect motion vector v2 are shown. Here, the movement of a light source or the like is performed upon the block B1 alone, and even if the brightness level of the block B1 decreases as a whole, determination is made that the evaluation value of the block B1 is high in reliability as compared with the evaluation value of the block B2 by employing the sum of squared brightness values from which the average brightness value within a computation block is subtracted for each frame as an offset. The present invention can be applied to a signal processing device for performing frame frequency conversion processing from a 24P signal to a 60P signal.

The invention provides a method and system for calibrating the pose error of a mechanical arm. The method includes: performing equivalent differential transformation on the pose error of the tail endof the mechanical arm to obtain an equivalent differential motion vector, decomposing the equivalent differential motion vector into the equivalent differential motion vector of each joint shaft, during independent motion, of the mechanical arm, and performing calibration and decoupling transformation on the pose error of each joint shaft, during independent rotation sampling, of the mechanical arm to calibrate the pose error of the tail end of the mechanical arm. The method and system has the advantages that equivalent different transformation description is performed on the pose error at thetail end of the mechanical arm to obtain the equivalent differential motion vector, the equivalent differential motion vector is decomposed into the equivalent differential motion vector of each connecting rod coordinate system, and decoupling calculation and transformation are performed on the connecting rod coordinate systems and joint motion coupling relations to achieve high-precision and high-reliability synchronous calibration of the absolute pose error of the mechanical arm in a full working space range.

An optical device fabrication method capable of fabricating optical devices with high precision and reliability in a simple process and at a low cost. The method of splicing a first optical device and a second optical device to fabricate a third optical device includes the steps of: (a) starting heating of an end surface of the first optical device to soften the end surface; (b) pushing the second optical device into the softened end surface to splice the first optical device and a joint surface of the second optical device to each other; (c) pulling back the second optical device to arrange the joint surface of the second optical device onto or outside of the end surface of the first optical device; and (d) terminating heating of the end surface to fix the first and second optical device spliced to each other.

An actuator includes a vibration plate area displaced by an electrostatic force, and electrodes facing each other via a first space in the vibration plate area The first space is formed by a sacrificial layer process using a sacrificial layer removing hole. A barrier as a fluid resistance is formed between the first space and a second space situated in the vicinity of the sacrificial layer removing hole.

The invention provides a light intensity and optical grating type hybrid fiber flow sensor and a measuring method. Bragg grating type fibers are symmetrically distributed on the surface of an annular elastic strain disc, and static pressure is calculated by the aid of wavelengths in centers of the fibers; light intensity fibers are perpendicularly irradiated to the center of the elastic strain disc, reflected light is received through two groups of receiving fibers, and an offset distance of the elastic strain disc is calculated through light intensity ratios of the two groups of the receiving fibers, so that total pressure is calculated; a temperature measuring grating fiber is adhered to the inner wall of a pitot tube, and the total temperature of the air compressor is calculated according to an offset amount of the center wavelength of the temperature measuring grating fiber; and another temperature measuring grating fiber is horizontally fixed on the inner side of a cylindrical metal casing for measuring the temperature of a work environment, and the total pressure and the static pressure are subjected to temperature compensation. The optical fiber sensor has the characteristics of small size, simple structure, high interference resistance and the like, and the multiple parameters such as the total pressure, the total temperature, the flow and the like of the fluid can be measured through one sensor.

A fluid pressure sensor (1) for measuring the pressure of a fluid comprises a diaphragm portion (12) which is a strain generating body, a silicon oxide film (21) as an insulating film, and a strain gauge (20) made of crystalline silicon, and austenitic precipitation hardening type Fe—Ni heat-resisting steel excellent in mechanical strength and corrosion resistance is used for the diaphragm portion (12). The silicon oxide film (21) is formed with the internal stress thereof adjusted to the range from −150 to 130 MPa. With this feature, the fluid pressure sensor (1) ensures high precision and reliability, and may be used even for measurement of a highly corrosive fluid.

The invention discloses a coiled material flat screen silk-screen printing method. The coiled material flat screen silk-screen printing method comprises the following steps that (1), a coiled material printed object is wound on a roller shaft assembly and uniformly moves forward with the speed v1, a screen frame uniformly and horizontally moves with the speed v2 in the same direction with printed object moving, the screen frame uniformly and vertically moves upward with the speed v3 along a guiding column, therefore the screen frame operates with the overall speed v4 in the inclined direction, and a scraper structure and the roller shaft assembly move uniformly and horizontally with the same speed as the screen frame and in the reverse direction with the screen frame; (2), when the screen frame and the coiled material printed object are in a relatively static state, the scraper structure moves downward to squeeze printing inks on the screen frame, and the printing inks leak onto the coiled material printed object through meshes; (3), after the screen frame and the scraper structure move oppositely and horizontally by a half length of a screen frame graph, one time of graphic printing is completed; and (4), the coiled material printed object continues to move uniformly, the screen frame, the scraper structure and the roller shaft assembly return to the initial positions, and the actions are repeated. The invention further discloses a coiled material flat screen silk-screen printing machine

An angle-measuring device includes a first group of components and a second group of components that are rotatable relative to each other about an axis. The first group includes a carrier element for enclosing a shaft and on which a graduation disk is secured, a connecting element, and a device for affixing the connecting element relative to the carrier element. The second group includes a sensor element for scanning the graduation disk. The carrier element and the connecting element are arranged such that the connecting element is able to be brought into operative connection with the carrier element so that torque is transmittable with positive locking between the connecting element and the carrier element about the axis. The connecting element is able to be brought into a positive-locking position by axial displacement by the device for affixing the connecting element, and is able to be prestressed radially against the shaft.

A variable reluctance resolver has a rotor with magnetic poles with 2× or greater axis combination angles, and is structured so that reliable and accurate zero point detection can be carried out. Concave and convex portions are provided on at least two, but fewer than all, of the magnetic poles of the rotor, and the zero point detection winding is provided on a plurality of electrical poles of the stator. Two or more zero point detection signals are generated simultaneously by a plurality of zero point detection windings. Therefore, even if a portion of the zero point detection signals is lost, the zero point can still be identified based on the correlation between the two or more zero point detection signals.

A system for data breach readiness comprising computer executable code for presenting a questionnaire relating to data security practices; grading the answers to the questionnaire to determine a readiness score; presenting a task list comprising a list of tasks to be accomplished before a thresh hold readiness score is achieved; and presenting a user interface to update the task list to show that an entry in the task list has been completed.

A vehicle mileage statistics method based on pulse counting comprises the following steps: acquiring an output signal of a vehicle pulse sensor, and converting the signal of the vehicle pulse sensor into a digital signal which can be identified by an MCU (Microprogrammed Control Unit) through a hardware comparator circuit; the method comprises the following steps: acquiring a rising edge event of a vehicle pulse signal by adopting an input capture function of an MCU (Microprogrammed Control Unit), firstly reading a pulse count value of a backup domain register by the MCU, and then automatically adding 1 to the pulse count value of the backup domain register; and calculating a check value of the pulse count value, and writing the pulse count value and the check value back to the mileage backup domain register. According to the invention, the vehicle driving mileage counting can be updated and stored in real time, an additional memory is not needed, and the mileage counting is not lost when the equipment is restarted abnormally. And the vehicle driving mileage counting precision is high and reliable.

A micromechanical apparatus includes a substrate, a movable element disposed in a reference plane in an undeflected state, a transmission structure having a first transmission side coupled to the substrate, and a second transmission side coupled to the movable element, and an actuator configured to provide a force along a force direction parallel to the reference plane and apply the same to the first transmission side. The transmission structure is configured to transfer the force along the force direction to a movement of the movable element out of the reference plane.

The invention relates to a self-centering adjustable machining clamping device comprising a base plate (1) and a plurality of sets of clamping tools arranged on the base plate. Each set of clamping tools comprises an upper pressing plate (2), a lower pressing plate (6), an upper positioning block (10), a forward and reverse screw rod (11), polish rods (12) and a lower positioning block (15); and the forward and reverse screw rod (11) and the polish rods (12) are arranged in parallel and penetrate through the upper positioning block (10), the upper pressing plate (2), the lower pressing plate (6) and the lower positioning block (15) from top to bottom respectively. By the adoption of the self-centering adjustable machining clamping device, the problem that the clamping machining preparation time of wing rudder type parts is too long is effectively solved, the problems of great difficulties in clamping and no way of guaranteeing the centering precision caused by part deformation are solved, the clamping efficiency is greatly improved, meanwhile, clamping is firmer, and the precision reliability is further improved.

The invention relates to the technical field of cylinder cover machining, in particular to a zero-point rapid positioning reference clamp of a cylinder cover machining tool. The zero-point rapid positioning reference clamp comprises an upper end clamping disc, a lower end clamping disc, a positioning connector arranged on the upper end clamping disc and a locking piece arranged at the top end of the lower end clamping disc, and the upper end clamping disc and the lower end clamping disc are oppositely arranged; and the positioning connector movably penetrates through the upper end clamping disc and extends into the locking piece, and the upper end clamping disc and the lower end clamping disc are in butt joint and drive the locking piece to lock the zero point position of the positioning connector. Compared with an air pressure or hydraulic pressure manner, the zero-point rapid positioning reference clamp is not easily influenced by the size of a pressure source, multi-directional zero-point positioning of the positioning connector is completed in the installation process of all parts of the clamp, the repeated positioning precision is only influenced by structural factors of all parts of the clamp, and the precision reliability is high.

The invention relates to a newly-built railway cross measurement method based on unmanned aerial vehicle laser point cloud and image fusion, and belongs to the technical field of newly-built railway engineering survey and construction, and the method comprises the following steps: S1, obtaining and preprocessing railway band-shaped unmanned aerial vehicle aerial photography data, and making a color point cloud and a live-action three-dimensional scene; s2, design line position arrangement and cross measurement position determination are carried out, and color point clouds at the cross measurement positions are segmented and saved; and S3, performing crossover calculation on the curve or straight line fitted by the linear ground feature crossed with the design line position and the design line position, and outputting a crossover measurement result. According to the invention, laser point cloud and image data are obtained at the same time in a way that the unmanned aerial vehicle carries out strip-shaped aerial photography along the line, and the aerial photography data can be reused, thereby facilitating checking and archiving management of achievements; according to the invention, unmanned aerial vehicle laser point cloud and image fusion processing is adopted, so that the precision and reliability of cross measurement are greatly improved; according to the invention, a non-contact measurement mode is adopted, so that the cross measurement field workload of the traditional newly-built railway is effectively reduced.

The invention discloses a 3C industry orientated modular multi-cantilever multifunctional device. The 3C industry orientated modular multi-cantilever multifunctional device comprises a main module, adetachable cross beam module is fixedly mounted on the main module, X-axis linear motor driving modules are symmetrically arranged on the two sides of the cross beam module, the X-axis linear motor driving modules are each provided with at least one Y axis cantilever module, at least one Z axis submodule is arranged on each Y axis cantilever module, at least one jig feeding module is arranged at the position, below the cross beam module, of the upper end of the main module, the upper end of the main module is further provided with at least one feeding submodule, composition components are in modular design, according to production needs, assembling matching is carried out, the structure is compact, and the size is smaller. According to production needs, the kind of Z axis submodules can bereplaced, the Z axis submodules can be replaced with carrying functions, machining functions, pasting functions, chip mounting functions and the like, and when the Z axis submodules are replaced, other modules do not need to be detached and replaced, and time and labor are saved.