54 results about "Nonlinear element" patented technology

The utility model discloses an overvoltage protection assembly and system formed by voltage-sensitive nonlinear elements. The assembly comprises an insulating core tube, a plurality of nonlinear elements, a first electrode, a second electrode, an insulating cylinder, a cooling fan and a temperature sensor. The assembly can perform forced air cooling on the nonlinear element, and is timely in response, good in cooling effect, simple and compact in structure and easy to integrate.

The present invention relates to a method for measuring the observability of a cat qubit. The quantum system includes a command circuit and a nonlinear superconducting quantum circuit including a nonlinear element and a resonant portion. Each of the nonlinear superconducting quantum circuits has a resonant frequency f a and f b It has first and second modes. The method is a) by a command circuit, frequency f b The method includes (1) delivering microwave radiation to drive a second mode, thereby causing a nonlinear element to operate a jump operator [Equation 1] that stabilizes a two-dimensional manifold hosting a cat qubit (900), (2) mapping a measurement of the observable under measurement to a Pauli operator Z in a cat qubit manifold of a size value whose square coefficient is 2 or greater (910), and (3) measuring the value of the Pauli operator Z (920).

Disclosed is a sub-harmonic mixer module including a dielectric circuit unit and a ground conductor. The dielectric circuit unit includes a dielectric substrate, a first conversion probe, a second conversion probe, a nonlinear element, and an RF / DC ground circuit. The first conversion probe converts an RF electromagnetic wave into a first electrical signal. The second conversion probe converts an LO electromagnetic wave into a second electrical signal. The nonlinear element switches depending on the second electrical signal and generates a third electrical signal. The ground conductor is connected with the RF / DC ground circuit and provides ground voltage. The first conversion probe, the second conversion probe, the nonlinear element, and the RF / DC ground circuit are formed on one surface of the dielectric substrate. The ground conductor is disposed to make contact with the one surface of the dielectric substrate and is position-adjustable.

The invention discloses a UModel + NSTSM (U mode + nonsingular terminal sliding mode) control method for self-balancing of an unmanned bicycle. According to the method, an internal optimization-external enhancement control framework is constructed, in the internal optimization link, two U-mode controllers of a transverse roller system and a handlebar subsystem of the unmanned bicycle are linearly connected in series by introducing a transition function, in the external enhancement link, a nonsingular terminal sliding mode is adopted as a compensator of a UModel controller, and the non-singular terminal sliding mode is adopted as the compensator of the UModel controller. And therefore, an edge enhancement control system framework controlled by the UModel is constructed. According to the UModel control, a large number of nonlinear elements of a bicycle system are absorbed by utilizing technologies such as inverter dynamic inversion, the amplitude of a switching item of NSTSM control is reduced, and inherent buffeting of NSTSM control is reduced; the NSTSM designs a nonlinear sliding mode through a state error, so that the dependence of UModel control on the precision of a bicycle dynamics model is weakened; the interaction of the two effectively inhibits the nonlinearity and uncertainty of the self-balancing system of the unmanned bicycle. According to the method, the balance robustness of the unmanned bicycle can be remarkably improved, the requirement for the precision of the bicycle kinetic model is low, the control frame structure is clear, engineering implementation is easy, and the method has very high engineering significance.

The application discloses a multi-constraint geometric nonlinear level set topology optimization method, device and medium, and aims to solve the problem that the current linear condition level set method is difficult to well optimize the large deformation of a to-be-optimized component. The method divides a design domain corresponding to the to-be-optimized component into a plurality of finite element units, and establishes corresponding level set radial basis functions based on volume constraints; according to the relationship between the element strain increment and the node displacement increment of the finite element unit, displacement constraint terms and frequency constraint terms are introduced to extend the Lagrange function; according to the nonlinear element unbalanced force, the element thermal load and the overall thermal load are calculated; based on the extended Lagrange function and the overall thermal load of the to-be-optimized component under the set temperature, the design domain is topologically optimized. The application considers the displacement constraint and the frequency constraint under the nonlinearity, is suitable for the to-be-optimized component under the large deformation condition, and can achieve an optimal topology result.

This invention provides an analytical method for a two-zone frequency full response model considering nonlinear elements, belonging to the field of analytical analysis of power system frequency response. First, considering the influence of nonlinear elements, a single-machine frequency full response model considering nonlinear elements is established. A piecewise modeling method for nonlinear elements and a full response analysis theory are proposed to achieve analytical analysis. Second, considering the influence of frequency spatiotemporal distribution characteristics, a two-zone equivalent frequency response model is established. An analytical method based on the model's vibration equation is proposed to achieve analytical analysis of regional frequencies. Finally, a two-zone frequency full response model considering nonlinear elements is established to achieve dynamic analytical characterization of the system's frequency response. This invention improves the accuracy of the model's description of the dynamic frequency characteristics of power systems after large disturbances, providing a new approach to solving the frequency security problem of power systems under the coupled influence of nonlinear elements and frequency spatiotemporal distribution characteristics, and contributing to the safe and stable operation of power systems.

To provide a display device with a structure suitable as a protection circuit, and a method for stabilizing an operation by increasing a function of the protection circuit.SOLUTION: A protection circuit is formed using a nonlinear element 170a including a gate insulating layer 102 that covers a gate electrode 101, a first oxide semiconductor layer 103 that overlaps with the gate electrode 101 on the gate insulating layer 102, a channel protection layer that covers a region overlapping with a channel formation region in the first oxide semiconductor layer 103, and a pair of a first wiring layer 38 and a second wiring layer 39 in which an end part overlaps with the gate electrode on the channel protection layer and a second oxide semiconductor layer 104a and a conductive layer 105a are stacked. By forming a junction between the oxide semiconductor layers with different physical properties on the gate insulating layer 102, a stable operation becomes possible as compared to Schottky junction, junction leakage is reduced, and characteristics of the nonlinear element 170a can be improved.SELECTED DRAWING: Figure 5

In one embodiment, the bridge includes a first magnetoresistive element having a first reference angle, a second magnetoresistive element in series with the first magnetoresistive element having a second reference angle, a third magnetoresistive element in parallel with the first magnetoresistive element having the first reference angle, and a fourth magnetoresistive element in series with the third magnetoresistive element having the second reference angle. The output of the bridge has a linear response over a range of horizontal magnetic field values ​​having non-zero values, with horizontal magnetic field strength values ​​in the range associated with vertical magnetic field strength values ​​having zero Oersted (Oe) values. The reference angle indicates the angle at which the magnetoresistive elements are most sensitive to changes in the magnetic field.

The invention relates to a method for measuring observable quantity of cat quantum bits. A quantum system includes a command circuit and a non-linear superconducting quantum circuit including a non-linear element and a resonant portion. The non-linear superconducting quantum circuit has first and second modes with respective resonant frequency sums. The method comprises: a) delivering (900), by the command circuit, microwave radiation at a frequency to drive the second mode so that the nonlinear element constructs a hopping operator that stabilizes a two-dimensional manifold carrying the cat qubits, b) mapping (910) the observable quantity to be measured to a Fouli operator Z in a cat qubit manifold having a square modulus of magnitude greater than or equal to 2, and c) measuring (920) the value of the Fouli operator Z.

The invention relates to a quantum system (1) for stabilizing Bose quantum bits, said system comprising: an instruction circuit (5) comprising three microwave sources (11, 13, 15), and a nonlinear superconducting quantum circuit (3) comprising a four-wave hybrid nonlinear element (7) and a resonant section (9), the quantum circuit (3) has a first mode having a first resonant frequency and a second mode having a second resonant frequency. The quantum circuit (3) is arranged to design a Hamiltonian H expressed as, by dissipation in the second mode, produce an effective dissipater that stabilizes the Bose quantum bits. To this end, the first microwave source (11) delivers frequency-equal radiation, the second microwave source (13) delivers frequency-equal radiation, and the third microwave source (15) delivers frequency-equal radiation to drive the second mode.

A quantum system for executing a CNOT gate includes a control circuit that provides radiation, a target cat qubit device and a control qubit device that are linearly coupled. The target cat quantum bit comprises a non-linear element, namely ATS, and has two purposes: the first purpose is to design two-photon conversion Hamiltonian for cat quantum bit stabilization, and the second purpose is to design CNOT Hamiltonian for executing a CNOT gate together with a quantum bit control device. At any time point, the ATS plays a role of cat quantum bit stabilization or plays a role of a CNOT gate.

A photonic integrated circuit includes an optical input configured to receive pump radiation, and a plurality of nonlinear elements connected to the optical input. The plurality of nonlinear elements are configured to generate broadband radiation upon receiving the pump radiation. At least two of the plurality of nonlinear elements differ in at least a material and / or a dimension.

The present disclosure is directed to a display circuit that can be formed on a flexible substrate. The circuit includes a voltage divider formed from first and second nonlinear resistor devices or first and second transistors connected in a diode configuration. The circuit includes a driving thin film transistor connected to the voltage divider. The nonlinear resistor device may include a bottom electrode that is an amorphous metal or a crystalline metal. The first and second transistors connected in a diode configuration may have a bottom electrode that is an amorphous metal. The top electrode may be a crystalline metal. The driving thin film transistor may have a bottom electrode that is an amorphous metal or a crystalline metal.

To provide a protection circuit with a suitable structure in order to take advantage of characteristics of a display device including an oxide semiconductor that has excellent operation characteristics and can be manufactured at low temperature.SOLUTION: A nonlinear element 30a forming a protection circuit includes a gate insulating layer 37 that covers a gate electrode 15, a pair of a first wiring layer 38 and a second wiring layer 39 in which an end part overlaps with the gate electrode 15 on the gate insulating layer 37 and a second oxide semiconductor layer 40 and a conductive layer 41 are stacked, and a first oxide semiconductor layer 36 that overlaps with at least the gate electrode 15 and is in contact with a part of a side surface part and an upper surface part of the conductive layer 41 in the gate insulating layer 37, the first wiring layer 38, and the second wiring layer 39 and a side surface part of the second oxide semiconductor layer 40. By forming a junction between the oxide semiconductor layers with different physical properties on the gate insulating layer 37, a stable operation becomes possible as compared to Schottky junction, junction leakage is reduced, and characteristics of the nonlinear element 30a can be improved.SELECTED DRAWING: Figure 5

The surge protection device comprises a shell, a nonlinear element, a first wiring board, a second wiring board and a thermal disengagement assembly, the nonlinear element comprises a first pin and a second pin, the surge protection device further comprises an elastic piece and an indicating piece which are installed in the shell, the thermal disengagement assembly comprises the elastic piece and the indicating piece, and the second pin is electrically connected with the second wiring board through the elastic piece. The elastic sheet comprises a movable part and a fixed part electrically connected with the second wiring board, the movable part is welded with the second pin through a hot-melting welding part, and the movable part is laminated and fixed on the indicating piece in the thickness direction of the surge protection device; the indicating pieces are arranged on the nonlinear element at intervals in a stacked mode in the thickness direction of the surge protection device and can move between a first position and a second position in the thickness direction of the surge protection device. According to the surge protection device, the elastic sheet integrates multiple functions. The assembling method of the surge protection device is used for assembling the surge protection device. According to the assembling method, the steps are few, assembling is simple, and all the steps are stacked type assembling.

The multi-pole surge protection devices are arranged in the width direction of the surge protection devices, each pole of surge protection device comprises a shell, a first wiring terminal, a first contact plate, a non-linear element and a thermal separation piece, the first contact plate is electrically connected between the first wiring terminal and a first pin of the non-linear element, and the thermal separation piece is electrically connected between the first wiring terminal and a second pin of the non-linear element. The one-pole surge protection device further comprises a second wiring terminal and a second contact plate, the second contact plate comprises a connecting part and a wiring part electrically connected with the second wiring terminal, the shell is provided with through holes penetrating through the shell, the connecting part penetrates into the through holes, and the connecting part is electrically connected with the second wiring terminal. And is in contact connection with the thermal disengagement member. According to the multi-pole surge protection device, the second contact plate electrically connected with the second wiring terminal is arranged, the connecting part of the second contact plate connects the thermal disengagement pieces of all the pole surge protection devices to share the second wiring terminal serving as the wire outlet end, and inter-pole connection can be carried out through the internal connecting part only by connecting one wire.

The present application provides a kind of wideband pulse light source device with excellent performance, which solves the problem of SC light with seed light wavelength region remaining at high intensity. The light from the pulse laser source (1) is made to generate nonlinear effect by the nonlinear element (2) to generate supercontinuum light, and the light of the oscillation wavelength of the residual pulse laser source (1) is attenuated when being split by the dichroic mirror (32). The split light is pulse stretched by the optical fiber (41), and is multiplexed by the multiplexing element (33) to irradiate the object (S). The light transmitted through the object (S) is received by the light receiver (6), and the output signal thereof is converted into a spectrum by the operation unit (7).

An assembly comprising a nonlinear element configured to generate broadband radiation from input radiation coupled into the nonlinear element. The assembly further comprises an optical element downstream of the nonlinear element, the optical element being configured to reflect a portion of the broadband radiation back into the nonlinear element. The nonlinear element is typically a nonlinear optical fiber, such as a hollow-core photonic crystal fiber (HC-PCF).

Systems and methods are provided for routing quantum signals in a quantum computing system. An exemplary method includes providing a waveguide configured to be coupled to at least two modules and a nonlinear element, the waveguide configured to facilitate exchange of quantum information between the at least two modules, the waveguide having at least two waveguide modes, each waveguide mode having a respective frequency; providing a first module couplable to the waveguide at a first module frequency corresponding to a first waveguide mode and a second module couplable to the waveguide at a second mode frequency corresponding to a second waveguide mode; and driving the waveguide via the nonlinear element at a difference frequency equal to a difference between the first module frequency and the second module frequency, thereby causing exchange of quantum information between the first and the second modules.

To solve a problem with a nonlinear circuit in which the output power decreases when the frequency band of the generated signal becomes high.SOLUTION: In a nonlinear circuit having a nonlinear element portion, the nonlinear element portion includes a transistor and a transmission line, the back gate of the transistor is connected to the transmission line, the transmission line is connected to ground, and has a total length based on the wavelength λ of a transmission signal transmitted to the nonlinear circuit, and the total length is equal to or greater than 0.8×λ / 4 and equal to or less than 1.2×λ / 4.SELECTED DRAWING: Figure 1

The present invention relates to a light source for optically pumping a laser active medium (7). The object of the present invention is to provide an improved, and in particular more efficient, pump light source compared to the prior art, in which the pump light is generated by nonlinear frequency conversion. To this end, the present invention proposes that the light source includes a multicore optical waveguide (1), the multicore optical waveguide (1) includes a plurality of photoconductive cores (2) extending along the longitudinal length of the multicore optical waveguide (1). A frequency converter (4) is connected downstream of the multicore optical waveguide (1) in the beampath, the frequency converter (4) is configured to convert a plurality of individual beams (5) emitted from the plurality of cores (2) of the multicore optical waveguide (1) into a plurality of frequency-converted individual beams (6) in a plurality of mutually distinct nonlinear elements of the frequency converter (4), each associated with an individual beam (5). A superimposed optical system is provided to superimpose the plurality of frequency-converted individual beams (6) in the laser active medium (7), thereby optically pumping the laser active medium (7). Finally, the present invention relates to a laser system using such a light source as a pump light source, and a method for optically pumping a laser active medium (7).

A method of measuring self-Kerr in a physical quantum system configured to host a bosonic code qubit, comprises the following operations: 1) providing a physical quantum system configured to host a bosonic code qubit, said physical quantum system comprising (i) a quantum circuit comprising oscillators hosting a buffer or readout mode and a memory mode, and a non-linear element coupling the buffer or readout mode to the memory mode, and (ii) a control circuit configured to apply one or more control signals to the quantum circuit to stabilize the bosonic code qubit in the memory mode and further configured to receive measurement signals from at least the buffer or readout mode, 2) define a coherent state (α) for the memory mode, and, for each of a plurality of coherent state amplitudes and each of a plurality of durations (t), a. prepare, using the control circuit, said coherent state (α) in the memory having one of said plurality of coherent state amplitudes, b. wait for a period of time having one of said duration (t), c. apply, using the control circuit, one or more control signals to said quantum circuit such that the quantum circuit is in a resonant regime | i * ω a - ω b | = j * |ω cs | if said one or more control signals comprise an AC component having an angular frequency |ω cs | or | i * ω a - ω b | = 0 if said one or more control signals comprise only DC components, resulting in an interaction, mediated via said non-linear element, in said physical quantum system which results in a Hamiltonian having a leading term of the general formula Hi,(j,0) α ξ(j,0) (α†)i b + h.c...., where α is the annihilation operator of said memory mode, i is an integer superior or equal to 1, ω a is the angular frequency of the memory mode whilst the quantum circuit is in the resonant regime, j is an integer superior or equal to 1, b is the annihilation operator of the buffer or readout mode, ω b is the angular frequency of the buffer or readout mode whilst the quantum circuit is in the resonant regime, and ξ(j,0) is the strength of said interaction, and d. simultaneously to operation 2)c., using the control circuit, receiving measurement signals comprising at least the mode phase and / or mode amplitude of the buffer or readout mode, 3) derive an effective detuning or a decayed mode amplitude for each coherent state amplitude, by fitting of the measurements of operation 2)d. which are associated with said each coherent state amplitude, 4) derive at least one of self-Kerr coefficients, stark-shift detuning, and memory dephasing rate from the plurality of effective detunings or decayed mode amplitudes of operation 3) by fitting of a function of the absolute magnitude squares of coherent state amplitude in said memory mode.

A method for calibrating a quantum system for stabilizing cat qubits, the quantum system (1) comprising: a non-linear superconducting quantum circuit (3) having a first mode (a) having a first resonant frequency (1) and for carrying the cat qubits, and a second mode (b) having a second resonant frequency (2) and for carrying the cat qubits; the second mode (b) has a second resonant frequency (f) and comprises a nonlinear element (7). The non-linear element (7) is arranged to cause 2-to-1 photon switching between the first mode (a) and the second mode (b) via 4-wave mixing and parametric pumping coupling the first mode (a) and the second mode (b) or via 3-wave mixing and DC biasing coupling the first mode (a) and the second mode (b); and a command circuit (5) for delivering microwave radiation or a current bias to the non-linear superconducting quantum circuit (3) to provide the parametric pumping or the DC bias and a first mode drive, the method comprises the following operations: a) obtaining a set of command circuit operating parameters, each set comprising a pairing of correlating the frequency of the parametric pump with the frequency of the first mode drive when the non-linear element (7) performs 4-wave mixing, or a pairing of correlating the frequency of the parametric pump with the frequency of the first mode drive when the non-linear element (7) performs 3-wave mixing, or a pairing of the parametric pump with the frequency of the second mode drive when the non-linear element (7) performs 3-wave mixing. Comprising a pairing of associating the DC bias value () with a first mode drive frequency (); b) applying the set of command circuit operating parameters to the command circuit during a period of more than 10 ns; c) performing at least one measurement of the group comprising a first mode photon number measurement and a second mode electromagnetic field measurement, d) repeating operations a) to c) until a calibration condition is met, e) deriving a set of calibrated commanded circuit operating parameters based on the measurements obtained in operation c).

A superconducting quantum circuit apparatus includes first through fourth qubits; and a coupler arranged in a region surrounded by a ground plane. The coupler includes: first and second electrodes opposed to each other; and a nonlinear element including at least one Josephson junction bridged between the first electrode and the second electrode between the first and second electrode, the first electrode including first and second opposing portions extended toward the first and second qubits, the second electrode including third and fourth opposing portions extended toward third and fourth qubit, the first through fourth opposing portions having ends for capacitive coupling with the first through fourth qubits, respectively. The ends of the first through fourth opposing portions are disposed within the region surrounded by the ground plane.

The invention relates to a light source for optically pumping a laser-active medium (7). The aim of the invention is to provide a pump light source which is improved, in particular more efficient, compared to the prior art, and which generates pump light by means of a non-linear frequency conversion. For this purpose, the invention proposes that the light source comprises a multi-core optical waveguide (1) comprising a plurality of light-guiding cores (2) extending along a longitudinal extent of the multi-core optical waveguide (1). A frequency converter (4) is connected downstream of the multi-core optical waveguide (1) in the beam path, which frequency converter is designed to convert individual light beams (5) emitted from the cores (2) of the multi-core optical waveguide (1) into frequency-converted individual light beams (6) in separate non-linear elements of the frequency converter (4), each separate non-linear element of the frequency converter is assigned to a respective individual light beam (5). A superimposition optical unit is provided for superimposing the frequency-converted individual light beams (6) in the laser-active medium (7) in order to optically pump the latter. Finally, the invention relates to a laser system using such a light source as a pump light source and to a method for optically pumping a laser-active medium (7).

The invention relates to a harmonic disturbance suppression method for low phase deviation in bandwidth, which is suitable for the field of artillery follow-up control influenced by harmonic disturbance. The observer provided by the invention comprises three parts: a sliding mode subsystem, a finite time reaching law and a low phase deviation observer. The method comprises the following steps: firstly, establishing a mathematical model for a disturbed system, then performing dimension reduction processing on an original system by using a sliding mode subsystem, then accelerating convergence of a dimension reduction process through a finite time reaching law, and finally introducing a dynamic state after dimension reduction into a nonlinear link to realize harmonic disturbance low-phase offset estimation in an observation bandwidth. Meanwhile, the invention also provides related equipment and a storage medium. A simulation experiment shows that compared with a traditional nonlinear disturbance observer and a generalized extended state observer, the observer provided by the invention has lower phase deviation and lower amplitude estimation error in an observation bandwidth.

This disclosure provides a work machine capable of predicting the precise behavior of each part of an attachment affected by nonlinear elements. [Solution] The shovel 100 is a work machine comprising an upper rotating body as the main body, an attachment provided on the upper rotating body, and a controller 30 as a control device. The controller 30 stores a dynamics model 301 of the attachment and a learning model 302 that outputs the nonlinear elements of the dynamics model 301. The controller 30 predicts the behavior of the attachment using the dynamics model 301, which includes the nonlinear elements output by the learning model 302.

An analog neural network is described comprising: a plurality of layers connected to form an electrical circuit having an input and an output, the input suitable for receiving an electrical signal corresponding to an input example and the output corresponding to an output of the neural network. Each layer comprises elements connected together, where the elements comprise: at least one programmable electronic element representing a weight of the neural network; at least one non-linear element; at least one amplifier block; an error element. Each layer also comprises a measurement element for measuring a change in an electrical signal across the error element.

A surge protector, comprising a housing, a nonlinear element, a first wiring board, a second wiring board and a thermal disconnection assembly, wherein the nonlinear element comprises a first pin and a second pin; the surge protector further comprises the thermal disconnection assembly disposed in the housing; the thermal disconnection assembly comprises an elastic sheet and an indicator; the second pin is electrically connected to the second wiring board by means of the elastic sheet; the elastic sheet comprises a movable portion and a fixed portion electrically connected to the second wiring board; the movable portion is soldered to the second pin by means of a hot-meltable soldering portion and is fixedly stacked on the indicator in the direction of thickness of the surge protector; and the indicator is stacked on the nonlinear element in the direction of thickness of the surge protector in a spaced manner, and is movable between a first position and a second position in the direction of thickness of the surge protector. In the surge protector of the present invention, the elastic sheet integrates multiple functions. An assembly method for the surge protector is used for the assembly of the above surge protector. The assembly method of the present invention involves fewer steps and simple assembly, and totally adopts a stacked assembly.

Antenna arrays for use in MIMO devices are disclosed. Such antenna arrays can include a plurality of array elements, where every two elements in a first direction are digitally predistortionless linear elements, and every two elements in the first direction are nonlinear elements. In the antenna array, the spacing between adjacent elements in the first direction is less than one half of a free space wavelength. Nonlinear precoding is applied to transmissions from the antenna array, the nonlinear precoding converting out-of-band emissions of the transmissions to reactive power in the near field around the antenna array while ensuring that in-band signals generated by the elements are not affected.