11 results about "Nonlinear inductance" patented technology

This invention discloses a comprehensive testing system for an electric bicycle controller, belonging to the fields of power electronics and motor control technology. The system includes the following steps: performing an electrical self-test to verify the validity of the basic operating state; after passing the self-test, acquiring a preset automated test sequence to control and simulate various test conditions for the controller under test; while running the automated test sequence, constructing a virtual motor operating environment on the rotorless stator coils, and performing virtual reconstruction and dynamic compensation algorithms; wherein, the dynamic compensation algorithm includes the generation and injection of virtual back EMF, real-time compensation of nonlinear inductance, and electromechanical coupling dynamic reconstruction; this system integrates virtual back EMF injection technology in the test board, by calculating and compensating the instantaneous value of the back EMF corresponding to the simulated rotational speed in real time in the digital domain, embedding key speed and position information into the feedback loop of the controller under test.

Disclosed is a method of manufacturing a Josephson travelling wave parametric amplifier, JTWPA (400), which comprises providing, on a substrate (406), a bottom conductive layer (404, 405), a dielectric layer (408), and a top conductive layer (403), the top conductive layer at least partly forming nonlinear inductors (409), top capacitor plates of parallel plate capacitors and / or conductive strips interrupted by nonlinear inductors, wherein the top conductive layer (403) is formed using a single instance of an angled evaporation method. The nonlinear inductors (409) may comprise one or more Josephson junctions, and the bottom conductive layer (404, 405) may form a CPW transmission line structure (402).

The invention provides a three-dimensional nonlinear magnetic material equivalent circuit model and a test method, and is applied to the technical field of power electronics. According to the model, a current source module applies bias current and excitation current to a nonlinear coupling packaging module; a plurality of node ports of the nonlinear coupling packaging module are connected with physical coupling nodes of a plurality of nonlinear coupling devices; the mapping sub-module maps the plurality of physical coupling nodes and the plurality of nonlinear coupling devices, constructs an analog nonlinear coupling circuit according to a connection coupling relation between the linear damping module and the plurality of nonlinear coupling devices, and responds to an applied bias current and an excitation current, so that the nonlinear coupling circuit is simulated. The analog nonlinear inductance unit is coupled to generate an analog induced voltage, and the analog induced voltage is applied to the linear damping module and other analog nonlinear devices through a plurality of node ports to reproduce a magnetic domain rotation coupling effect and an anisotropic hysteresis effect; the linear damping module responds to the analog induced voltage and reproduces a damping effect in combination with the analog nonlinear resistor unit.

The application provides a nonlinear inductor, a manufacturing method thereof and a nonlinear inductor array. The nonlinear inductor comprises two magnetic core assemblies, a conductor and a magnetic plastic sealing layer. The magnetic core assembly comprises a magnetic core, the magnetic core comprises a blade and a column arranged on the blade, two columns of the two magnetic core assemblies are oppositely arranged, and the two columns have non-uniform air gaps therebetween and / or the magnetic core assemblies are made of different materials. The conductor is arranged on the two columns, the two magnetic core assemblies and the conductor are located in the magnetic plastic sealing layer, an electrode part of the conductor is exposed outside the magnetic plastic sealing layer, the magnetic core assemblies and the magnetic plastic sealing layer are made of different materials, and thus the nonlinear inductor has a stepped saturation characteristic.

A quantum information element 10 comprising a first element 18 and a second element 20. The first element comprising a first superconducting non-linear inductor (e.g. Josephson junction) provided betw

A hybrid voltage regulator device can include a hybrid phase circuit and a capacitor. The hybrid phase circuit can include a heterogeneous power stage and a nonlinear inductor coupled between the heterogeneous power stage and the capacitor. The heterogeneous power stage can be configured to provide a signal to the nonlinear inductor. The hybrid phase circuit can be configured to selectively operate in a first mode, wherein an amplitude of a current of the signal is less than a first threshold amplitude and a first inductance of the nonlinear inductive component is greater than a first threshold inductance. The hybrid phase circuit also can be configured to selectively operate in a second mode, wherein the amplitude of the current of the signal is greater than a second threshold amplitude, and a second inductance of the nonlinear inductive component is less than a second threshold inductance.

There is provided a travelling-wave parametric amplifier comprising: a transmission line; a plurality of unit cells provided along the transmission line; and a resonator coupled to the plurality of unit cells, wherein each unit cell of the plurality of unit cells includes a non-linear inductance element and a shunt capacitor. There is also provided a quantum information processing system comprising: a quantum operation unit that outputs an output signal of qubits; and a travelling-wave parametric amplifier that amplifies the output signal output from the quantum operation unit, wherein the travelling-wave parametric amplifier comprises: a transmission line; a plurality of unit cells provided along the transmission line; and a resonator coupled to the plurality of unit cells, wherein each unit cell of the plurality of unit cells includes a non-linear inductance element and a shunt capacitor.

A quantum information element comprising: a first element and a second element; the first element comprising a first superconducting non-linear inductor provided between two superconducting islands; and the second element comprising a three-wave mixing element provided between two superconducting islands, wherein one of the superconducting islands is common to both the first and second elements.

Disclosed is a nonlinear inductor, a manufacturing method thereof, and a nonlinear inductor row. The nonlinear inductor includes two magnetic core assemblies, a conductor and a magnetic plastic encapsulation layer; the magnetic core assemblies include magnetic cores; each magnetic core includes a flange and a central column arranged on the flange; two central columns of the two magnetic core assemblies are opposite to each other; a non-uniform air gap exists between the two central columns and / or the magnetic core assemblies are made of different materials; the conductor is arranged on the two central columns; the two magnetic core assemblies and the conductor are located in the magnetic plastic encapsulation layer; electrode parts of the conductor are exposed outside the magnetic plastic encapsulation layer; and the magnetic core assemblies and the magnetic plastic encapsulation layer are made of different materials; thereby the nonlinear inductor has stepped saturation characteristics.

The present invention relates to a system and method for high voltage switching in a computed tomography system. The system includes an oscillator circuit having a nonlinear inductor and a capacitor. The inductor and capacitor are connected in series, and the capacitor is connected to a high voltage line of a high voltage power supply. The inductor has an inductance that decreases with increasing current through the inductor, so that the inductance of the inductor changes significantly during resonant operation of the oscillator circuit, thereby essentially providing a square voltage that is applied to the capacitor. The square voltage modulates the high voltage of a high voltage generator, thereby switching the high voltage level applied to the electrodes of the computed tomography system.

The utility model discloses a kind of Josephson parametric amplifier based on full impedance matching, it is related to superconducting quantum computing technical field.Josephson parametric amplifier includes substrate and the impedance transformer, resonator, superconducting quantum interference device and pump line sequentially arranged on substrate;Resonator and superconducting quantum interference device constitute resonant circuit, and resonator and superconducting quantum interference device are respectively used to provide the impedance and nonlinear inductance required for resonance;Impedance transformer, resonator and pump line are coplanar waveguide, and resonator and impedance transformer jointly constitute impedance network, provide the impedance required for signal amplification to realize high bandwidth high gain parametric amplifier.The utility model uses coplanar waveguide to realize the impedance network of full impedance matching, simplifies the manufacturing process of parametric amplifier, improves the consistency of preparation amplifier.Simultaneously, the coplanar waveguide based on superconducting material reduces the loss in signal amplification process, improves the reading efficiency of quantum signal.