412 results about "Coupling strength" patented technology

An anti-ferromagnetically coupled, granular-continuous (“AFC-GC”) magnetic recording medium having increased thermal stability, writability, and signal-to-medium noise ratio (“SMNR”), comprising a layer stack including, in sequence from a surface of a non-magnetic substrate: (a) a continuous ferromagnetic stabilizing layer; (b) a non-magnetic spacer layer; and (c) a granular ferromagnetic recording layer; wherein: (i) the continuous ferromagnetic stabilizing and granular ferromagnetic recording layers are anti-ferromagnetically coupled across the non-magnetic spacer layer, the amount of anti-ferromagnetic coupling preselected to ensure magnetic relaxation after writing; (ii) lateral interactions in the granular, ferromagnetic recording layer are substantially completely eliminated or suppressed; and (iii) the exchange coupling strength in the continuous, ferromagnetic stabilizing layer is preselected to be slightly larger than the strength of the anti-ferromagnetic coupling provided by the non-magnetic spacer layer to thereby enhance thermal stability of the recording bits.

A method for quantum computing using a quantum system comprising a plurality of qubits is provided. The system can be in any one of at least two configurations at any given time including one characterized by an initialization Hamiltonian H0 and one characterized by a problem Hamiltonian HP. The problem Hamiltonian HP has a final state. Each respective first qubit in the qubits is arranged with respect to a respective second qubit in the qubits such that they define a predetermined coupling strength. The predetermined coupling strengths between the qubits in the plurality of qubits collectively define a computational problem to be solved. In the method, the system is initialized to H0 and is then adiabatically changed until the system is described by the final state of the problem Hamiltonian HP. Then the state of the system is read out by probing an observable of the σX Pauli matrix operator.

The invention provides a method and device for detecting a polarization extinction ratio of an optical polarizer. The detection method comprises the following steps of: making linear polarized light incident along a principal axis of an optical polarizer to be detected, and obtaining two light signals on two orthogonal optical axes at an outgoing end due to polarization crosstalk; interfering and carrying out photoelectric conversion and data acquisition on interfering light signals to obtain one group of discrete voltage signal values reflecting the interfering light intensity signals; and calculating coupling intensity h at each coupling spot based on a formula (1), and calculating an extinction ratio of the optical polarizer to be detected based on a formula (2). The device sequentially comprises a light source, an isolator module, a polarization module, the optical polarizer to be detected, a projection direction regulating module, an interferometer module, a data acquisition module and a central processor module. The invention has the advantage that the coupling intensity of the coupling spots is detected to induce the polarization extinction ratio, so that the measurement result is accurate. The invention is suitable for various optical polarizers, such as polarization maintaining fibers, polarization maintaining fiber couplers, polarizers and the like and has certain universality.

A perpendicular magnetic recording medium adapted for high recording density and high data recording rate comprises a non-magnetic substrate having at least one surface with a layer stack formed thereon, the layer stack including a perpendicular recording layer containing a plurality of columnar-shaped magnetic grains extending perpendicularly to the substrate surface for a length, with a first end distal the surface and a second end proximal the surface, wherein each of the magnetic grains has: (1) a gradient of perpendicular magnetic coercivity Hk extending along its length between the first end and second ends; and (2) predetermined local exchange coupling strengths along the length.

Disclosed are a battery pack and a fabricating method which can increase the coupling strength of a bare cell and a circuit accessory and prevent the circuit accessory from being separated from the bare cell due to external forces such as bending, twisting and falling of a battery, by forming a fixing member protruding from the upper part of the bare cell, and coupling the fixing member with a fixing member hole of the circuit accessory formed in advance by injection molding in the type of the fixing member being laid across the fixing member hole. The battery pack includes: a bare cell having a cap plate on the upper part of the bare cell; and a circuit accessory coupled with the upper part of the bare cell, wherein a fixing member is formed to protrude from the outer surface of the cap plate, a fixing member hole corresponding to the fixing member is formed on the circuit accessory, and the fixing member is inserted in and is coupled with the fixing member hole.

An expandable threaded connection between segments of expandable tubulars that allows the threaded tubular connection to withstand the stresses and deformations imposed on the connection by the tubular expansion process is disclosed. The present invention is a unique hybrid threaded connection that utilizes two complementary thread segments to form the expandable threaded connection. The first segment of the threaded connection utilizes standard box and pin threads such that the threads on the pin member in the area of the first segment fully engage the mating threads on the box member. The second segment of the threaded connection has the threads machined on the pin member in a manner such that material is removed from the stab flank of the pin threads to reduce the standard width of the pin threads. In contrast to the pin threads of the second segment, the box threads of the second segment are standard thread width and, thus, are the same thread width as the box threads in the first segment. The use of the reduced thread width in the pin threads of the second segment allows for a loose fit between the pin threads of the second segment and the box threads of the second segment. As the threaded connection is expanded, the loose fit between the pin and box threads of the second segment allows radial and axial movement between the pin and box threads of the second segments of the threaded connection without causing disengagement of the threaded connection. The disclosed hybrid threaded connection thus utilizes multiple thread segments in which the second thread segment accommodates the stresses and deformations generated by the radial expansion process while the threads of the first segment maintain the coupling strength and the pressure integrity of the threaded connection.

A rotor of a flux barrier type synchronous reluctance motor comprises: a rotation shaft; a rotor core formed as a plurality of steel plates are laminated to one another, the steel plate having a shaft hole for inserting the rotation shaft, a plurality of flux barrier groups spaced from one another in a circumferential direction and having a plurality of flux barriers spaced from one another in a radial direction, and a coupling hole penetratingly-formed between the adjacent two flux barrier groups; and a coupling member inserted into the coupling hole and fixing the steel plate. Accordingly, a fabrication cost and an entire weight of the motor are decreased, and a fabrication process is facilitated with a shortened fabrication time. Also, a large coupling intensity is obtained and a magnetic saturation does not occur, thereby preventing a function degradation of the motor.

A system for adaptive partitioning of circuit components during simulating of a circuit having a hierarchical data structure includes a simulator module having one or more computer programs for 1) selecting a group of leaf circuits from the first branch and the second branch for simulation, where each leaf circuit is represented by a matrix comprising a set of equations, 2) determining a strength of coupling between two or more leaf circuits of the group in accordance with a set of predetermined electrical coupling criteria, 3) if two or more leaf circuits are deemed be strongly coupled, combining the corresponding matrix of each strongly coupled leaf circuit into a combined matrix, and 4) performing computation for the two or more strongly coupled leaf circuits in accordance with the combined matrix. The system adaptively adjusts the group circuit matrix for computing a group of circuits according to the strength of coupling between the circuits. Hence, it achieves higher simulation performance by reducing either the size of the solver matrix when the circuits are loosely connected to each other, or by reducing the number of computational repetitions due to the communication of changes of signal conditions between circuits by combining the individual circuit matrices when such circuits are closely coupled to each other.

A groove is formed in a ring shape and a ring-shaped convexity is formed on the periphery of a through-hole of a positive electrode terminal plate. An upper end side of a crimping part of a positive electrode exterior terminal is inserted through the through-hole of the positive electrode terminal plate and crimped, and welded spots are formed by irradiation with high-energy beams between a distal end side of the crimping part and the convexity. The mechanical and electrical connection of an exterior terminal and a terminal plate to the crimping part through welding with high-energy beams makes it possible to provide a prismatic secondary battery of enhanced reliability in which cracking is less likely to occur in the welded spots, the coupling strength between the exterior terminal and the terminal plate is increased, and fluctuations in the internal resistance are curbed.

The invention discloses a stacked type three-order substrate integrated waveguide filter. The stacked type three-order substrate integrated waveguide filter comprises a top surface metal layer, a first dielectric substrate, a first middle metal layer, a second dielectric substrate, a second middle metal layer, a third dielectric substrate and a bottom surface metal layer which are stacked and distributed in sequence, wherein a first resonant cavity, a second resonant cavity and a third resonant cavity are formed in the first dielectric substrate, the second dielectric substrate and the third dielectric substrate respectively; an input port is formed in the top surface metal layer; an output port is formed in the bottom surface metal layer; the first middle metal layer is used for adjusting the magnetic coupling coefficient between the first resonant cavity and the second resonant cavity to obtain a first transmission zero point; and the second middle metal layer is used for adjusting the magnetic coupling coefficient between the second resonant cavity and the third resonant cavity to obtain a second transmission zero point. The stacked type three-order substrate integrated waveguide filter provided by the invention, by adjusting the electromagnetic coupling strength and obtaining extra transmission zero points, greatly improves frequency selection and harmonic suppression characteristics without changing the existing dimensions.

A perpendicular magnetic recording medium, such as a perpendicular magnetic recording disk, has a magnetic “torque” layer (MTL) that exerts a magnetic torque onto the perpendicular magnetic recording layer (RL) in the presence of the applied perpendicular write field. The MTL thus acts as a write assist layer in reversing the magnetization of the RL. A coupling layer (CL) is located between the MTL and the RL and provides the appropriate ferromagnetic coupling strength between the MTL and the RL.

A battery pack increases coupled strength of a protection circuit module and an outer case, and realize a compact battery pack by physically coupling the protection circuit module coupled to a bare cell and the integral outer case by an adherent member. The battery pack includes a bare cell; a circuit module arranged on an upper surface of the bare cell and electrically coupled to the bare cell; an outer case integrally formed so as to cover a pair of short side surfaces and the upper surface of the bare cell including the circuit module, and coupled to the circuit module; and a label attached to the pair of the short side surfaces, a pair of long side surfaces and a lower surface of the bare cell. At least one protrusion part may be integrally formed an outer side surface of said circuit module. At least one tapered part may be integrally formed with said outer case.

Disclosed herein is a secondary battery pack including a battery cell having an electrode assembly of a cathode / separator / anode structure mounted in a battery case together with an electrolyte in a sealed state, an insulative mounting member having openings, through which electrode terminals of the battery cell are exposed to the outside, the insulative mounting member being constructed in a structure in which a safety element is mounted to the top of the insulative mounting member, the insulative mounting member being in direct contact with the top of the battery cell, and an insulative cap coupled to the top of the battery cell such that the insulative cap surrounds the insulative mounting member while the safety element is mounted to the insulative mounting member, wherein the battery case is provided at the top thereof with at least one coupling groove, and the insulative mounting member is provided at the bottom thereof with at least one coupling protrusion corresponding to the at least one coupling groove, whereby the coupling of the insulative mounting member to the battery cell is accomplished by the insertion of the at least one coupling protrusion into the at least one coupling groove. The assembly process of the secondary battery pack according to the present invention is greatly simplified. Also, the volume of the member mounted to the top of the battery cell is minimized, and, at the same time, the coupling strength between the battery cell and the mounting member is stably maintained.

A squeeze pin and a secondary battery using the same improve the coupling intensity of an electrode tab and a lead terminal, prevent damage of a protection circuit module, and reduce the cost. The secondary battery includes an outer case; an electrode assembly accommodated in the outer case and including a positive electrode plate connected to a positive electrode tab, a negative electrode plate connected to a negative electrode tab, and a separator; a protective circuit board including first and second connection terminals; and a first lead terminal connecting the positive electrode tab to the first connection terminal and a second lead terminal connecting the negative electrode tab to the second connection terminal, wherein at least one of the first lead terminal and the positive electrode tab, or the second lead terminal and the negative electrode tab are physically electrically connected to each other.

The invention discloses a cavity filter with a rotary coupling regulation structure, comprising a body and a cover plate, wherein at least three resonant cavities are arranged at the body, bulkheads are arranged among the resonant cavities; a cylindrical groove with an arc-shaped inner wall surface is arranged in each bulkhead; openings corresponding to the resonant cavities are arranged at the two sides of the cylindrical groove; the rotary coupling regulation structure is rotationally matched in the cylindrical groove; the rotary coupling regulation structure comprises a cylindrical insulation supporting block and a capacitive coupler fixedly arranged on the insulation supporting block; the insulation supporting block is provided with arc-shaped outer wall surface matched with the cylindrical groove; and the outer end of the capacitive coupler penetrates the openings and is coupled with the resonant cavities. Through the rotary coupling regulation structure, the capacitive cross coupling strength of the cavity filter can be very conveniently regulated from the outside of the cover plate.

The invention discloses a data demodulation method for polarization maintaining fiber stress sensing. The method comprises the following steps of: acquiring an interference signal by using a polarization maintaining fiber stress sensing test system to acquire photovoltage data; pre-processing the photovoltage data, averaging every n points to acquire new photovoltage data, and data volume; decomposing a photovoltage data signal into an intrinsic mode function (IMF) component and an allowance by an experimental mode method; finding out a basic component and identifying a small coupling point; reconstructing coupling intensity of a signal, and calculating the stress magnitude through intensity of each coupling point so as to realize the distributed detection of a system; and calculating indexes which can show the system test accuracy, such as a signal-to-noise ratio and the like. The method can effectively improve the signal-to-noise ratio of the polarization maintaining fiber stress sensing system, and improves the identification capacity of weak coupling points and the sensitivity of a coupling test. Under the environment of relatively low signal-to-noise ratio, microstress can be detected well.

This invention provides a fastener tape and a stinger for a slide fastener constituted of a warp knitting or weaving structure and including a tape main portion and a fastener element attaching portion, wherein a warp and a weft, which are composition yarns of the fastener tape, are composed of multifilament yarns and a size of a composition filament of the warp is 1.0 to 2.0 dTex, and a size of that of the weft is 2.0 to 5.0 dTex, these sizes of the single filaments being not larger than ¼ of the conventional composition filament, thereby achieving advantages that they adapt well to a fabric when and after a slide fastener is sewed to a thin fabric having flexibility and excellent drape performance and secure tape strength and coupling strength required as a slide fastener, the fastener tape and stringer ensuring flexibility and soft feeling.

The invention discloses a cluster synchronization method of complex time delay network. The method comprises the following steps: for a given complex time delay network, grouping is performed to nodes according to the synchronization state to be achieved by network, nodes in the same group achieve the same state and nodes in different groups achieve different states; and control input only depending to local information is exerted on each node, and the coupling strength between nodes performs adaptive increase according to the local information of the connected nodes of coupling strength fromtime zero until the network achieves cluster synchronization. When the maximal delay time of all the nodes in network is less than the critical value, the network achieves cluster synchronization; but when the maximal delay time of all the nodes in network is more than the critical value, the network can not achieve cluster synchronization.

Increasing the energy scale of a quantum processor improves its performance. Energy scale of a quantum processor may be increased by increasing the coupling strength of communicatively coupled superconducting devices comprised in the quantum processor. Configuring the physical dimensions of communicatively coupled superconducting devices such that an intentional direct coupling is induced between a pair of superconducting devices communicatively coupled by a coupling device may controllably add an additional mutual inductance to the mutual inductance of the pair of superconducting devices. Furthermore, reducing the beta parameter of a coupling device may improve the tunability of the coupling device. The combined effects of improved tunability of the coupling devices and the increased coupling strength between superconducting devices communicatively coupled by respective coupling devices comprised in the quantum processor may thus improve the performance of the quantum processor.

The invention discloses a coupling simple-pendulum experimental device built by using small magnetic steel and a measurement method thereof. The device is obtained by reforming the existing instrument and is provided with a triangular bracket, a rotary shaft, a bearing and multiple shaft sleeves arranged on the rotary shaft at equal interval; a simple pendulum is hung below each shaft sleeve; oneend of the rotary shaft is fixedly connected with a stepping motor; the rotation speed and rotation angle of the stepping motor are adjustable, and the stepping motor can drive the rotary shaft to rotate within a set angle so that each single pendulum is forced to vibrate; one or multiple pieces of small magnetic steel is adsorbed on each shaft sleeve; and the small magnetic steel on adjacent shaft sleeves attracts each other so that the single pendulums influence each other during respective movement to realize coupling. The coupling strength can be changed by changing the amount of the small magnetic steel. A digital camera device can continuously shoot and process the motion images of multiple single pendulums at the same time, and the movement locus, amplitude and other information ofthe coupled single pendulums is displayed, calculated and recorded by a PC (Personal Computer). The device has the advantages of simple structure and low price, and is convenient to operate and easy to popularize.

Disclosed is a secondary battery that can improve coupling strength between a bare cell and a protection circuit module by combining a projected portion of a bare cell with a hole of a lead plate, and to simplify manufacturing process by removing welding process.