672 results about "Linear section" patented technology

A sampled amplitude read channel is disclosed for magnetic disk storage systems comprising an adaptive non-linear correction circuit for correcting non-linear distortions in the read signal, such as asymmetry caused by the non-linear response of a magneto-resistive (MR) read head. The analog read signal is sampled and the discrete time sample values equalized into a desired partial response prior to sequence detection. The non-linear correction circuit is inserted into the read path prior to the sequence detector and adaptively tuned by a least-mean-square (LMS) adaptation circuit. In one embodiment, the non-linear correction circuit is a discrete-time Volterra filter comprising a linear response for implementing an equalizing filter, and a non-linear response for attenuating non-linear distortions in the read signal. The filter coefficients of both the linear and non-linear sections of the Volterra filter are adaptively adjusted by the LMS adaptation circuit. In an alternative embodiment, the non-linear correction circuit operates in the analog domain, prior to the sampling device, where the cost and complexity can be minimized. The analog correction circuit implements an inverse response to that of the non-linearity in the read signal, and the response is adaptively tuned using an LMS update value computed in discrete-time for a Volterra filter, without actually implementing a Volterra filter. Further, the LMS update value for the analog correction circuit can be implemented using a simple squaring circuit.

A microactuated head suspension including a mounting region for attachment of the head suspension to a source of primary actuation, a pair of generally arcuate ring springs and a connecting member. The ring springs at spaced locations extending from the mounting region with at least one aperture interposed between the pair of ring springs. Each ring spring having concave sides that are substantially free from linear sections and are oriented away from a longitudinal centerline of the head suspension. The connection member is located opposite the mounting region and is spaced from the mounting region by the at least one aperture. The connection member joins ends of the pair of ring springs. In addition, the head suspension may include at least one microactuator for secondary actuation of the head suspension. The microactuator is operationally mounted relative to the pair of ring springs.

A liquid crystal display device comprises a pair of substrates subjected to an aligning treatment in mutually parallel but opposite directions, a liquid crystal layer interposed between the pair of substrates, a first electrode bent into a “<” shape, and a second electrode formed via an insulating film with the first electrode. The first electrode comprises one linear section and another linear section that extend in directions that intersect the alignment treatment direction at different angles, a bent section that is provided at each end where the one linear section and the other linear section adjacent to each other and that extends in a direction that intersects the alignment treatment direction at an angle that is greater than each of the intersecting angles of the one linear section and the other linear section and the alignment treatment direction with respect to the alignment treatment directions.

The invention discloses a path tracking guiding control method of a dynamic positioning ship. The path tracking guiding control method of the dynamic positioning ship comprises the steps that (1) a geodetic coordinate system, a hull coordinate system and a mathematical model of the ship are built; (2) a guiding strategy is generated through by setting the geometrical position relation between a path generated by path points and the ship, and the expected heading of the ship at the current moment is calculated; (3) control moment needed by controlling the ship to achieve the expected heading is obtained through application of a control algorithm; (4) longitudinal thrust needed by controlling the ship to be at the expected movement speed is calculated. According to the path tracking guiding control method of the dynamic positioning ship, the expected heading, on a high-speed path tracking linear section, of the ship and the expected heading, on a high-speed path tracking turning section, of the ship are calculated according to track information and the relative position between the flight path and the ship, the movement speed of the ship is controlled through the longitudinal thrust, the calculation process is simple and easy to implement, and the path tracking guiding control method of the dynamic positioning ship is applicable to engineering application.

The invention relates to a device for detecting the welding track of a corrugated plate of a container based on laser ranging, which comprises a laser displacement sensor and a welding gun position and posture adjusting device; one end of the welding gun spatial position and posture adjusting mechanism is fixed on a stand; the laser displacement sensor is arranged at the lower end of the welding gun spatial position and posture adjusting mechanism; and the laser displacement sensor and the welding gun position and posture adjusting device are connected with a circuit control device through circuits. Through the detection of a weld joint of the corrugated plate, the control of the position and the posture of the welding gun and the autocontrol of a welding process, the device achieves the effect of thickness consistency among downhill welding sections between wave peak and wave trough of the corrugated plate, an uphill welding section between the wave trough and the wave peak and a linear section of the wave peak and a linear section of the wave trough, remarkably improves the welding evenness of each welding section, greatly reduces the labor intensity of laborers, has rapid and convenient parameter adjustment and reduces the labor cost of production. The welding speed is more than three times of that of common manual welding or contour welding; and the whole process is automatically controlled.

The invention relates to a sparse coding and visual saliency-based method for detecting an airport through an infrared remote sensing image. The method comprises the following steps of: firstly, down-sampling an original remote sensing image, linearly detecting the down-sampled remote sensing image via using an LSD (Least Significant Difference) algorithm, calculating the saliency of the image via using an FT algorithm; then detecting the airport by utilizing a sliding window target detector, judging whether a linear section exists in the sliding window, if not, sliding the window continuously, if so, carrying out the sparse coding on the window by utilizing a dictionary constructed by an airport target image of the remote sensing image, and screening sparse codes in a way of combining the sparse codes with salient values of the window, so as to obtain sparse expression characteristics of the window; finally, discriminating the sparse code characteristics of the sliding window via an SVM (Support Vector Machine) binary classifier, judging whether the airport exists in the window, and realizing the detection of an airport target ultimately. Compared with other invented technologies, the method has the advantages of high airport detection accuracy and low false alarm rate.

In one embodiment, a transistor includes a pillar of semiconductor material arranged in a racetrack-shaped layout having a substantially linear section that extends in a first lateral direction and rounded sections at each end of the substantially linear section. First and second dielectric regions are disposed on opposite sides of the pillar. First and second field plates are respectively disposed in the first and second dielectric regions. First and second gate members respectively disposed in the first and second dielectric regions are separated from the pillar by a gate oxide having a first thickness in the substantially linear section. The gate oxide being substantially thicker at the rounded sections. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.

The invention relates to a performance correction method for a gold mark immunochromatographic test strip detection system. The method comprises the steps of: first, recording data information corresponding to a gold mark strip colorimetric card by a photoelectric detector of the gold mark immunochromatographic test strip detection system; then determining and storing the optimal response curve of the data of the gold mark strip colorimetric card and the concentration of the object detected according to the corresponding relation between the color of the gold mark strip colorimetric card and the concentration of the detected substance; then, using the gold mark strip colorimetric card to test current state of the gold mark test strip system when performance of the gold mark test strip system is needed to be corrected, determining a current response curve of the gold mark test strip system, then comparing the optimal response curve with linear sections of the current response curve one by one and section by section; determining and storing the mapping functions corresponding to the linear sections of the current response curve; and finishing correction. According to the performance correction method for the gold mark immunochromatographic test strip detection system provided by the invention, the truth-value of the concentration of the object detected can be obtained by calculating the data collected by the gold mark test strip system, thereby reducing the measurement error caused by problems of system aging and the like, and ensuring long time accurate and quantitative measurement of the gold mark test strip system.

The present invention provides a linear and curvilinear motor system capable of gilding smoothly on a rail formed by a linear rail and an arc rail, and performing precise location. Specifically, a linear and curvilinear motor system includes: linear and curvilinear guiding devices movably guiding and respectively supporting right and left of a slider, each having a guide rail configured by linear tracks and a circular arc track and slider blocks; a motor unit having a stator with a stator linear section which is a permanent magnet (111a) and a stator circular arc section which is a permanent magnet (111b) and a mover, wherein the mover and the stator disposed at the slider and away at an interval and provided with a coil (11) with the linear section; and an encoder head (30) and a Hall sensor (31) detecting positions of the linear tracks and the circular arc track. When a magnetic pole pitch of the linear section of the stator is a distance [lambda]m and a magnetic pole pitch of the circular arc section of the stator is an angle [gamma]m, a radius r of the circular arc track at the position detection point is defined as r=[lambda]m / [gamma]m.

The invention discloses a light flexible polymide foam material and a preparation method thereof. The light flexible polymide foam material is obtained by reaction and solidification of hyperbranched aromatic polyamide, a catalyst, a surface active agent, an accessory ingredient and isocyanate, wherein the hyperbranched aromatic polyamide is formed by aromatic triamine together with aromatic dianhydride and / or aromatic acid ester. The intermediate section of the molecular structure is a hyperbranched section formed by the aromatic triamine together with the aromatic dianhydride and / or the aromatic acid ester, the side chain of the molecular structure is a cross-linking or / and linear section formed by aromatic dianhydride and / or aromatic acid ester together with isocyanate. The polymide foam material is simple in preparation process, the shrinkage percentage of the polymide foam material is minus 35.34%-21.75%, the density of the polymide foam material is 6.0 kg / m<3>-31.0 kg / m<3>, and the glass-transition temperature of the polymide foam material is 235 DEG C-320 DEG C; and the polymide foam material is a flexible sound-absorbing noise-reducing polymer foam material and is mainly suitable for the fields of aerospace, ships and electronic industry.

The invention provides a broadband double-ridged horn antenna for solving the technical problems of complex structure, lobe splitting in high frequencies and gain decline of the existing broadband double-ridged horn antenna. The broadband double-ridged horn antenna comprises a horn shell (1), a rectangular waveguide section (2), an upper ridge (3), a lower ridge (4) and a coaxial feeder line (5), wherein the rectangular waveguide section (2) adopts a cubic structure with a cavity; the ridge lines of the upper ridge (3) and the lower ridge (4) are both formed by linear sections and curved sections, wherein the curved sections adopt cubic bezier curves, and the coordinate values of the endpoint control points at the tail end of the curve are greater than that of the endpoints at the tail end; the two ridges (3, 4) are fixed on the inner walls of the upper side plate and the lower side plate of the horn shell (1); and the coaxial feeder line (5) passes through the top end of the rectangular waveguide section (2) to be connected with the upper ridge (3) and the lower ridge (4). The broadband double-ridged horn antenna has a simple feed structure, and can maintain sable directional diagram characteristics within a broadband range, so that the horn antenna is suitable for being used as the feed source for a standard measurement antenna and a reflector.

A metal blank that includes a binder trim component having at least one cut edge with a non-linear section. The creation of the non-linear section simultaneously forms a corresponding section in a binder trim component of an adjacent metal blank so that binder material can be shared therebetween. This reduces the amount of scrap metal, as the binder trim component is subsequently cut off and discarded. Furthermore, the non-linear section can include one or more strategically placed formations, such as projections, recesses, flat sections, etc., that cause it to be non-uniform along its length and to be specifically tailored to the manufacturing requirements of the part being formed.

The embodiment of the invention relates to the electric power inspection technical field, and discloses a power transmission line detection method and device; the method comprises the following steps: carrying out frame difference operation between two adjacent frame images of a collected visible light video sequence so as to obtain a difference image, and binarizing same to obtain a binary difference image; using a preset threshold edge detection algorithm to carry out edge detection for the binary difference image so as to obtain an edge binary difference image; carrying out Hough conversion so as to detect linear sections; carrying out cycle iterations and screening merging for detected linear sections according to the transmission line parallel characteristics until the obtained target linear section number is smaller than a preset value, and marking and displaying same; calculating the central position of a target zone, and sending the central position to a hang cabin so as to adjust the posture of the hang cabin. The method and device can effectively improve the power transmission line detection efficiency and accuracy, thus reducing work load of inspection personnel.

A magnetic sensor for an encoder has a sliding surface and detects magnetic field by keeping the sliding surface in contact with a surface of a magnetic medium to which a magnetic pattern with a predetermined magnetization pitch is recorded. The magnetic sensor includes a plurality of MR elements laminated with each other in a direction parallel to a direction of the magnetization pitch of the magnetic medium. Between two of the MR elements an insulation layer is sandwiched. Each of the MR elements has a plurality of linear sections.

An apparatus and method generating a grid map are provided. The grid map generating apparatus generates a grid map while turning 360 degrees at a dynamically adjustable rotational velocity. The dynamically adjustable rotational velocity allows grid points to have equal intervals on the grid map. The grid map generating apparatus generates a grid map while making a complete turn, and generates a grid map corresponding to a non-linear section while making another turn.

A core for an electromagnetic device includes a yoke and at least two legs extending from the yoke. The yoke and at least two legs are formed of steel plates laminated together. Each of the legs has a free end face forming a magnetic pole face, a first groove extending from the magnetic pole face and a second magnetic groove on a side face thereof. Also, the core includes a shading coil having a metal ring shape, and including a first linear section and a second linear section extending in parallel with each other. A part of the first linear section is accommodated in the first groove, and a part of the second linear section is accommodated in the second groove and locked therein. A bottom face of the second groove forms an angle with respect to a bottom face of the first groove.

The invention provides a full-scale-movement linear circulating accelerated loading test system. The full-scale-movement linear circulating accelerated loading test system comprises a machine frame, a guide rail, two or more rolling wheel sets and two chain transmission pairs, wherein a front walking and guiding wheel and a back walking wheel are fixed to the lower part of the machine frame through a lifting mechanism; the guide rail is arranged on the machine frame; the upper loading surface of the guide rail is a linear section; the lower loading surface of the guide rail is shaped like a boat bottom; the two ends of the upper loading surface and the lower loading surface are connected in smooth transition through curved sections; the guide rail adopts a box-type structure and is internally filled with a shock-absorbing material; each rolling wheel set comprises two loading wheels and a rolling wheel; the rolling wheel is positioned between the two loading wheels and is coaxial with the loading wheels. The full-scale-movement linear circulating accelerated loading test system adopts a design scheme that the chain transmission pairs drive the rolling wheel sets, a chain and the rolling wheel sets are assembled together through chain pin shafts and connecting components, and the axes of wheel axles of the rolling wheel sets are vertical to and intersected with the longitudinal centerline of the chain; the full-scale-movement linear circulating accelerated loading test system is simple in structure, high in reliability and low in using cost and maintenance cost; the distance from the loading wheel to the rolling wheel is small, the stress condition is good, noise is low, and the efficiency is high.

The invention discloses a route planning algorithm of an intelligent lawn mower. The route planning algorithm includes the steps: firstly, dividing a working grassland into a plurality of polygonal working areas according to topographic conditions in a working area set by the intelligent lawn mower, secondly, acquiring accurate positional coordinate information of working area boundaries through a vehicular GPS (global positioning system) device in a field surveying and mapping manner to obtain boundary vertexes and boundary linear equations of the polygonal areas, setting inner angles of the polygonal working areas which are smaller than or equal to 180 degrees, and dividing one polygonal working area into two polygonal working areas if the inner angle of the polygonal working area is larger than 180 degrees; calculating a reciprocating traversal linear route in each working area according to effective coverage width. According to the route planning algorithm, the accurate positional coordinate information of the working area is acquired by the aid of a GPS, so that a working area map is made, the working area is divided into a plurality of polygonal areas, time dividing and stage dividing working is facilitated, different working modes are selected, a linear section is planed, so that complexity of the route planning algorithm can be reduced, and later autonomous navigation control is conveniently achieved.

The invention discloses a method for separating the influences of fatigue damage and a thixotropic factor on an asphalt modulus, which relates to a testing method for the asphalt modulus and is used for solving the problem of limitation on the conventional analysis of the asphalt fatigue characteristic under the action of cyclic load with a damage theory. The method comprises the following steps of: drawing a standard relation curve of an asphalt dynamic modulus and a phase angle, testing relation curves of the dynamic modulus and the phase angle under different initial strain conditions, finding a turning point which is deviated from a linear section on each curve, finding a dividing point between a thixotropy influence area and a damage influence area, and fitting curve parts in front of the dividing point to obtain the values of k, alpha and beta; and fitting the dynamic modulus of asphalt to obtain a value D, and separating the dynamic modulus of the asphalt into two parts, i.e., a modulus under the influence of thixotropy and the reduction value of the modulus caused by damage. The method is used for researching the fatigue characteristic of asphalt.

The invention discloses a distributed amplification gyro traveling wave tube amplifier, which consists of two sections, namely a linear amplification section with a structure alternatively loading by using a smooth circular waveguide and a loss medium waveguide and a nonlinear amplification section of the smooth circular waveguide, wherein the smooth circular waveguide in the linear section is synchronous to electron beams so as to generate electronic cyclotron maser interaction; a mode in the loss medium waveguide is asynchronous to the electron beams, so that net energy exchange does not exist and a high-frequency field is absorbed by a lossy material; and the electron beams interact in the smooth waveguide and drift in the loss waveguide. Therefore, the linear section is a pre-bunchingsection with high stability. Cyclotron electron beams are fully modulated by driven power in the linear section, well-bunched electron beams intensely act with a working mode in the nonlinear sectionand transverse kinetic energy is converted into microwave energy, so that high-energy microwave output is obtained. The loss medium waveguide of the linear section can effectively absorb a competition mode so as to ensure the stability of a device. The nonlinear section works by using pre-bunched electron beams, so that high power, high stability and high efficiency are achieved.

The invention discloses a method for suppressing the limit cycle of an inclination angle control system of an aircraft with parameter uncertainty. The method comprises the following main steps of: step 1, analyzing and establishing a model of the inclination angle system of the aircraft; step 2, analyzing scanning functions of a non-linear section and an oscillation phenomenon of the limit cycle; step 3, designing a controller of the inclination angle system of the aircraft with the parameter uncertainty; step 4, inspecting the performance of the controller; and step 5, ending the design. With the adoption of the method, not only is the oscillation of the limit cycle of the aircraft suppressed, but also the parameter uncertainty is overcome, and furthermore, the rapid and precise tracking to the inclination angle of the aircraft is realized. The method has better practical value and good application prospect in the technical field of automatic control.

A heat dissipation device includes a base and a fin set thermally contacting the base. The base has a receiving portion for contacting to and absorbing heat from an electronic device and an extension portion surrounding the receiving portion. A first heat pipe is thermally engaged with the base. The first heat pipe is sinuous and includes a plurality of sections thermally engaged with the extension portion and the receiving portion of the base. A second heat pipe is thermally engaged with the extension portion and the receiving portion of the base. A middle linear section of the first heat pipe and an adjacent linear section of the second heat pipe are mounted to the base and located corresponding to the receiving portion of the base.

The invention discloses a quick-blind-mating floating-type-mounted RF coaxial connector and a connecting method thereof. The RF coaxial connector comprises a socket and a plug. The socket comprises an inner conductor jack, an insulator, a socket outer conductor, a floating sleeve, a spring and a mounting panel. The plug comprises a plug outer conductor, an inner conductor inserting pin, an elastic collar and a mounting board. The elastic collar is connected with an engaging trough in an adapted engaging manner. The inner hole linear section of the socket is in insertion fit with the outer cycle linear segment of the plug. According to the RF coaxial connector, on the condition that the plug is inserted into the socket, two reference surfaces are superposed, thereby forming a theoretical zero clearance and ensuring continuity of capacitance. Furthermore a specific engagement structure is utilized, thereby eliminating radial clearance and preventing axial endplay clearance in a stationary state in insertion. Furthermore the quick-blind-mating floating-type-mounted RF coaxial connector and the connecting method have advantages of small size, compact structure, low reflection coefficient, low voltage standing wave, full-band linear voltage standing-wave ratio, excellent shielding efficiency, etc.

The invention relates to a method for detecting secondary consolidation coefficient of soft soil indoors. The method comprises the following steps: (1) placing a vessel on a base, allowing a fulcrum to be contacted with the upper cover of the vessel, and allowing a contact of a sensor to be elastically contacted with the fulcrum; (2) introducing air to a piston to jack the vessel and the sensor, lowering the contact in a jacking process to ensure that the contact is constantly contacted with the fulcrum; (3) sending lowered distance delta h of the contact to a control system after the distance is acquired by the sensor, and calculating the void ratio e by a formula, wherein e0 is the natural void ratio of soil and constant, h0 is the height when a sample is in zero load; (4) constantly lowering the contact along with time extension, calculating the void ratio in real time by the control system, and finally generating a curve graph of a secondary consolidation coefficient (time logarithm-void ratio), wherein the curve completely comprises an upper curve section, a middle linear section and a lower linear section; and (5) calculating the slope of the lower linear section of the secondary consolidation curve, and calculating the secondary consolidation coefficient Ca. The method ensures that the whole curve is extended by increasing time-taking under each grade of load, and the secondary consolidation segment can more clearly reflect the law that soil body changes along with time extension. The final settlement of a building can be calculated according to curve tendency, namely the relationship of basic settlement and time, by combining the service life of the building, the engineering stability range can be calculated so as to ensure engineering safety.

The present invention relates to the cutting insert having a cutting edge which has a corner section that forms a convex arc shape when seen in a planar view from direction facing the rake face and a linear section that is in contact with the corner section at least at one end of the corner section and extends linearly. The cutting edge is provided with a first region along the corner section when seen in a planar a second region along the linear section and a third region between the first region and the second region. A rake angle of the cutting edge in the third region is made greater than rake angles of the cutting edges in the first region and the second region.

A guided vehicle system that achieves a higher conveyance efficiency by manipulating an exclusion control executed with respect to a junction section includes a traveling path, a plurality of guided vehicles, and a guided vehicle controller. The traveling path includes a linear section, an exit-side connecting path, and a second junction section where the linear section and the exit-side connecting path converge. The guided vehicles travel along the traveling path. The exit-side connecting path includes a standby section. The guided vehicle controller controls the movement of the guided vehicles. During a period until a prescribed number of guided vehicles has stopped in the standby section of the exit-side connecting path, the guided vehicle controller allows guided vehicles to pass from the linear section to the second junction section continuously while making guided vehicles wait at the standby section of the exit-side connecting path.

An antenna assembly includes an antenna / radio interface, a body section connected to the antenna / radio interface, and a group of omnidirectional radiating elements, where each radiating element has a first portion with a first end and a second end, the first end being coupled to the body section and the second end being opposite the first end. Each radiating element also has a second portion with a first end, a second end, and a linear section between the first end and the second end, the first end of the second portion being coupled to the second end of the first portion. The second end of the second portion is opposite the first end of the second linear portion and spaced away from the body section by a distance, arranged so that the first portion of each element is substantially coaxial with the first portion of at least one other of the group of omnidirectional radiating elements, and arranged so that the first portion of each element is substantially orthogonal to the first portion of at least two other of the group of omnidirectional radiating elements, wherein the first portion and the second portion meet at a non-zero angle to each other.

A steering system for a vehicle may include a load displacement system allowing transient loads of the steering mechanism to be displaced. The steering system may also include a first coupling mechanism coupling an electric motor to a rack housing, and a second coupling mechanism coupling a ball nut to a rack. A method for providing an actuation force to a rack of a vehicle includes isolating non-axial loads from an electric motor of a steering system and isolating non-axial loads from a linearly actuatable member of a rotary-to-linear conversion device in the steering system. An actuator for a steering system may include a rotary to linear actuator, a movable linear section, and an interface between the rotary to linear actuator and the linear section. The interface may include one or more cylindrical joints, revolute joints, compliant members, or a block on a plane wherein the total degrees of freedom for the system including the rotary to linear actuator, rack, and interface may be one, while the interface may be limited to three degrees of freedom.

The invention relates to the technical field of design methods for a magnetic focusing structure of a medical electrified particle synchrotron, in particular to a heavy ion or proton synchrotron with a medical 45-degree deflection magnetic focusing structure. The synchrotron comprises eight deflection dipole magnets and eight synchrotron linear sections, wherein the eight deflection dipole magnets and the eight synchrotron linear sections are alternatively connected in turn through an annular vacuum pipeline; the eight deflection dipole magnet is 45-degree deflection dipole magnet; and the 45-degree deflection magnetic focusing structure comprises the annular vacuum pipeline in which electrified particles run and a magnet element, an acceleration element and an injection and extraction element which are arranged on the annular pipeline. The synchrotron has the advantages of effectively utilizing the space of the synchrotron, realizing the function of the medical heavy ion / proton synchrotron by arranging as few elements as possible, reducing manufacturing cost and installation space to the maximum extent, improving therapeutic efficiency and lowering treatment cost.