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US 11,448,711 B2Granted
Simulation models for integrated fluxgate magnetic sensors and other magnetic circuit components
AssigneeTexas Instruments Incorporated
InventorsVijay Krishnamurthy, Tikno Harjono, Viola Schaffer
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Abstract
Improved magnetic component models, circuit simulation systems and methods are presented for simulating operation of a modeled magnetic circuit component in which user input defines magnetically susceptible core geometry of the modeled magnetic circuit component, a core model simulates operation of the magnetically susceptible core at least partially according to the geometry of the magnetically susceptible core, and one or more coil models simulate operation of coils wound around the magnetically susceptible core to provide a scalable model with geometry adjustable permeability for fluxgate magnetic sensors, transformers, inductors or other modeled components.
Claims9
A user adjustable magnetic component model stored in a non-transitory computer readable medium and executed by a processor to simulate operation of a modeled magnetic circuit component in a modeled electrical circuit, the magnetic component model comprising:
- a set of predetermined connection inputs that include simulated circuit connections to the modeled magnetic circuit component;
- a model user input including a user configurable parameter having a geometry aspect of a magnetically susceptible core of the modeled magnetic circuit component, the magnetically susceptible core including two core portions;
- a core model executed by the processor to simulate operation of the magnetically susceptible core of the modeled magnetic circuit component at least partially according to the geometry aspect of the magnetically susceptible core;
- and
- a coil model executed by the processor to simulate operation of a coil wound at least partially around the magnetically susceptible core of the modeled magnetic circuit component;
- wherein the magnetic component model simulates operation of a modeled magnetic sensor and comprises:
- an excitation coil model executable by the processor to simulate operation of an excitation coil wound at least partially around the magnetically susceptible core of the modeled magnetic circuit component at least partially according to a simulated circuit connection to a simulated excitation circuit;
- a sense coil model executable by the processor to simulate operation of a sense coil wound at least partially around the magnetically susceptible core of the modeled magnetic circuit component at least partially according to a simulated circuit connection to a simulated sense circuit;
- and
- a magnetic field model executable by the processor to simulate operation of an external magnetic field proximate the magnetically susceptible core of the modeled magnetic circuit component;
- wherein the core model, the excitation coil model, the sense coil model, and the magnetic field model are connected in a series magnetic circuit in the magnetic component model;
- and
- wherein the core model is executable by the processor to simulate operation of the magnetically susceptible core at least partially according to the simulated external magnetic field.
10 more elements
A circuit simulation system, comprising:
- a processor;
- an electronic memory operatively coupled with the processor;
- a user adjustable magnetic component model stored in the electronic memory and executed by the processor to simulate operation of a modeled magnetic circuit component in a modeled electrical circuit, the magnetic component model comprising:
- a set of predetermined connection inputs that include simulated circuit connections to the modeled magnetic circuit component,
- a model user input stored in the electronic memory and including a user configurable parameter having a geometry aspect of a magnetically susceptible core of the modeled magnetic circuit component, the magnetically susceptible core including two core portions,
- a core model stored in the electronic memory and executed by the processor to simulate operation of the magnetically susceptible core of the modeled magnetic circuit component at least partially according to the geometry aspect of the magnetically susceptible core, and
- a coil model stored in the electronic memory and executed by the processor to simulate operation of a coil wound at least partially around the magnetically susceptible core of the modeled magnetic circuit component;
- and
- a simulator implemented using the processor and operative to simulate operation of the modeled electrical circuit at least partially according to the magnetic component model;
- wherein the magnetic component model simulates operation of a modeled magnetic sensor and comprises:
- an excitation coil model stored in the electronic memory and executable by the processor to simulate operation of an excitation coil wound at least partially around the magnetically susceptible core of the modeled magnetic circuit component at least partially according to a simulated circuit connection to a simulated excitation circuit;
- a sense coil model stored in the electronic memory and executable by the processor to simulate operation of a sense coil wound at least partially around the magnetically susceptible core of the modeled magnetic circuit component at least partially according to a simulated circuit connection to a simulated sense circuit;
- and
- a magnetic field model stored in the electronic memory and executable by the processor to simulate operation of an external magnetic field proximate the magnetically susceptible core of the modeled magnetic circuit component;
- wherein the core model, the excitation coil model, the sense coil model, and the magnetic field model are connected in a series magnetic circuit in the magnetic component model;
- and
- wherein the core model is executable by the processor to simulate operation of the magnetically susceptible core at least partially according to the simulated external magnetic field.
14 more elements
Dependencies are inferred from the claim text.