2179results about "Induction heating control" patented technology

The invention relates to the field of electromagnetic induction heating, and discloses a global temperature control method for an electromagnetic induction heating system, which comprises the following steps of: acquiring a two-dimensional temperature distribution diagram of a heating area at a plurality of key moments through a multi-point infrared temperature acquisition and induction heating coil synchronous excitation mechanism; performing multi-dimensional region segmentation on the global temperature scene data set, and identifying a temperature abnormal region and a thermal diffusion path feature based on a boundary thermal gradient change rate and an energy transfer path analysis algorithm; a distributed power regulation and control method and a historical thermal field evolution rule are introduced based on the regional thermal response feature map; thermal field feedback information is collected in real time in the temperature control process, and the current global thermal field state is judged in combination with a thermal distribution stability judgment criterion; and based on the updated control parameter configuration table, in combination with the thermal performance parameters of the material and the geometric information of the workpiece, generating an operation instruction set of the heating process, and executing intelligent regulation and control. The induction heating device has the advantage of improving the induction heating quality.

The invention discloses an intelligent electromagnetic induction heating method and system for multi-parameter collaborative frequency domain separation, and provides a synchronous parameter acquisition and frequency domain separation processing scheme for solving the problems of temperature detection lag, insufficient frequency domain interference processing and weak dynamic adaptation capability in the prior art. Transient current, voltage and change rate (a first parameter group) of an electromagnetic coil are synchronously acquired, and high-frequency fluctuation (greater than or equal to 10kHz) and low-frequency disturbance (1t, 1t) are converted into low-frequency fluctuation (greater than or equal to 10kHz) by combining environment temperature, cookware materials and user preferences (a second parameter group); 10kHz) is used for frequency spectrum separation. Phase difference features are extracted through band elimination filtering and FFT, heating priorities are corrected in combination with dynamic compensation factors, and a segmented heating curve is generated through time-frequency domain weighted fusion. And the system adjusts PWM parameters in real time, and triggers adaptive protection when detecting that the phase is abnormal or the power frequency exceeds the limit. According to the method, the limitation of single-frequency-band detection is broken through, high-frequency noise suppression and low-frequency disturbance compensation are realized, and accurate temperature control of ferromagnetic / non-ferromagnetic cookware is supported.

A wireless power transmission apparatus for induction heating includes: a working coil configured to change operation based on selection of a mode of operation from among a plurality of operating modes, the plurality of operating modes including a wireless power transmission mode configured to wirelessly transmit power and a heating mode configured to heat one or more objects, an inverter configured to output, to the working coil, current at an operation frequency, and a controller. The controller is configured to calculate an eccentricity degree between the working coil and a reception coil of a target object, and control, in the wireless power transmission mode, the operation frequency based on the calculated eccentricity degree while performing wireless power transmission to the target object.

The invention relates to the technical field of vacuum induction heating temperature control, and discloses a vacuum induction heating temperature closed-loop control system integrated with SCADA (supervisory control and data acquisition), which is characterized in that a functional material layer with preset Curie temperature is compounded on the surface of an induction coil, and the absolute value of phase difference is analyzed by collecting voltage and current signals of the coil in real time; according to the invention, through the synergistic effect of the electromagnetic impedance sudden change characteristic of the functional material layer and the phase difference detection mechanism, non-contact accurate control of the phase change critical temperature of the workpiece is realized; and meanwhile, due to the coupling application of the asymmetric micro-pulse waveform design and the dynamic adjustment strategy, the contradiction between thermodynamic response and electromagnetic interference in a vacuum environment is effectively balanced, and the control precision and stability of the system are remarkably improved.

The invention relates to the technical field of chip encryption, in particular to an E-type effect amplifier electromagnetic heating method and system based on gallium nitride. The real-time resistance correction value is calculated by acquiring the real-time resistance data and the real-time temperature data and combining the working characteristic information and the ideal parameter information of the gallium nitride device, so that the temperature change of the gallium nitride device can be quickly responded, and then the resistance division subset and the temperature division subset are respectively acquired; a plurality of temperature-resistance correlation groups are obtained after permutation and combination, a data basis is provided for establishing a working voltage prediction model, then the working voltage prediction model is trained through historical data, and finally a real-time resistance correction value and a real-time temperature value are input into the corresponding working voltage prediction model to obtain a working voltage simulation value. And a circuit where the gallium nitride device is located is adjusted according to the working voltage analog value, so that the working voltage and the working current of the gallium nitride device are close to ideal values, and stable power output of the device is ensured.

The invention discloses an intelligent electromagnetic induction heating system and method based on edge calculation, and aims to realize efficient and accurate heating control through advanced technical means. According to the system, a multi-source data real-time acquisition module is integrated, and various key parameters in the heating process can be comprehensively obtained. Through the data preprocessing and feature extraction technology, the system can accurately identify the heating state, and a reliable basis is provided for subsequent control. The edge computing node serves as the core of the system, has strong real-time analysis capability, can quickly respond to changes in the heating process, and dynamically adjusts a control strategy. In addition, through an edge-cloud collaborative optimization technology, cloud resources are fully utilized, and the intelligent level of the system is further improved. The problems of feedback lag, high cloud dependence and the like in the prior art are effectively solved, the heating uniformity, the energy efficiency ratio and the abnormity recovery capability are remarkably improved, and a reliable solution is provided for the fields of industrial heating, household induction cookers and the like.

The invention relates to an eddy current heating device for a thermoluminescence element and a heating method. The device comprises a heating disc, a copper coil assembly, a supporting frame, a temperature measuring sensor assembly and a control circuit, the heating disc is in a disc shape, and the copper coil assembly is composed of four multi-layer closely-wound fan-shaped copper coils which are arranged in four quadrant areas of the heating disc respectively; the temperature measuring sensor assembly is provided with four temperature sensors which are embedded into the bottom of the heating disc through heat-conducting glue and connected with the control circuit. The control circuit adopts a PID (Proportion Integration Differentiation) algorithm to independently adjust the current of each sector according to feedback signals of each temperature sensor, realizes rapid temperature rise and accurate temperature control through frequency adjustment and power compensation, and has an over-temperature protection function. According to the device, the temperature of the heating disc can be raised to 300 DEG C within 3 seconds, and the temperature deviation is controlled within + / -0.5 DEG C. Compared with traditional resistance heating, the device has the advantages of being fast in temperature rise, low in energy consumption, high in temperature uniformity, convenient to maintain and the like, and meets the high-precision temperature control requirement of thermoluminescence measuring and reading equipment.

The invention relates to the technical field of control and adjustment, in particular to an intelligent control system and method for an induction cooker, and the method comprises the steps: collecting the material and temperature data of cookware through a multi-source sensing module; the collaborative prediction module dynamically adjusts the window size of the time convolution network and generates a power compensation parameter and a frequency tuning parameter; the simulation execution module executes triple calculation of particle swarm optimization, thermal inertia calibration and nonlinear constraint verification, and outputs optimization control parameters; and the optimization feedback module updates the weight of the thermal inertia model in real time through a double-loop feedback mechanism and calibrates prediction parameters. Perceptual data synchronous processing is achieved through edge calculation, knowledge graph driving load sudden change rapid decision is achieved, the simulation efficiency is improved through dynamic step length control, and material parameter mapping is optimized through historical deviation statistics. The problem of multi-link cooperative response mismatch under the load sudden change working condition is solved, the power regulation response time delay is shortened, and the heating efficiency stability and the safety protection precision are remarkably improved.

The high-frequency heating device includes at least a phase difference detector, a frequency controller, an inverter, and an LCR circuit, and the phase difference detector detects the phase difference between the high-frequency voltage generated by the frequency controller and the high-frequency current flowing through the LCR circuit, and the inverter updates the driving frequency of the high-frequency voltage based on the phase difference to control the current in the LCR circuit.

The invention discloses full-automatic coil bending equipment, which belongs to the technical field of coil bending and comprises a bending head connected with an external driving mechanism, a central column is fixedly connected to the center of the top end of the bending head, a wire passing groove is formed in the inner side of the bending head, and a guide roller for clamping and guiding a copper wire is rotatably arranged at the wire passing groove through a support. A driven counting roller is arranged on the surface of the guide roller in an engaged mode, and an electromagnetic induction heating coil used for heating the copper wire is arranged on one side of the bending head. According to the copper wire bending device, the guide roller, the driven counting roller and the electromagnetic induction heating coil are arranged, when the correlation photoelectric sensors rotate to the mutually aligned positions, the electromagnetic induction heating coil heats the bending position of a copper wire, stress generated when the copper wire is bent can be greatly reduced, the surface of the bending position becomes flat, and the bending quality of the copper wire is improved. And the coil can be better attached to the iron core, so that the mounting stability of the coil is ensured.

The invention discloses a differential closed-loop control method and device for a dual-frequency induction heating power supply inverter, and belongs to the technical field of induction heating power supplies, and the method comprises the steps: carrying out the learning and analysis of a control frequency relation of the dual-frequency induction heating power supply inverter through a deep learning method, and determining an optimal control frequency; a multi-level inverter is used as a power supply inverter for dual-frequency induction heating; s2, according to the optimal control frequency determined in the step S1, performing differential closed-loop control on the output frequency of the multi-level inverter by adopting a control method combining PWM control and PM control; pWM and PM control parameters are dynamically adjusted through a real-time adjustment mechanism of differential closed-loop control. According to the invention, the frequency adjustment precision and the power output stability of the dual-frequency induction heating power supply inverter are improved.

The invention discloses a current source type LCCL double-frequency resonance system and a parameter matching method thereof, which are suitable for synchronous double-frequency induction quenching of complex workpieces such as gears. The system is composed of two current type resonant inverters working at a low frequency and a high frequency respectively and a dual-frequency LCCL resonant cavity, and dual-frequency current superposition is realized through parallel output. The double-frequency LCCL resonant cavity has two parallel resonance points, a mode based on simplified topology is adopted to simplify parameter design, and meanwhile design errors are maintained at a low level. A power matching coefficient is introduced, the ratio of high-frequency output power to low-frequency output power is adjusted by adjusting the value of the power matching coefficient, and the problem of double-frequency power unbalance caused by frequency variation characteristics of load equivalent resistance and the like is solved. The superposed double-frequency current forms a low-frequency envelope embedded high-frequency oscillation composite waveform on the induction heating coil, cooperative control of tooth root deep quenching (low frequency) and tooth surface hard quenching (high frequency) is achieved, and the method has the advantages of being simple in parameter design, high in power decoupling performance, high in operation stability and the like.

The invention provides an aerosol generation device, a heating control method thereof and a storage medium, and the heating control method comprises the steps: S1, a control assembly obtains frequency error data, and the frequency error data represents error data between the resonant frequency of a heating assembly and a target frequency; s2, performing fuzzification processing on the frequency error information by the control component to obtain a target frequency adjustment parameter; s3, the control component adjusts the resonant frequency according to the target frequency adjustment parameter to obtain a target output frequency; s4, the control assembly controls the heating assembly to conduct heating according to the target output frequency. According to the heating control method, a radio frequency heating system frequency dynamic regulation and control strategy based on real-time capacitance monitoring and fusing fuzzy control and a fast Fourier transform (FFT) algorithm is creatively applied, and the purpose is to guarantee that a heating assembly can always accurately run in the optimal resonant frequency interval, and efficient and stable heating performance is achieved.

The invention discloses a control method of a cooking utensil and the cooking utensil. The cooking utensil comprises an electromagnetic heating device, a detection device and a control device, the electromagnetic heating device is used for conducting electromagnetic heating on a pot, and the detection device is used for detecting relevant parameters of the distance between the pot and the electromagnetic heating device. The control device is electrically connected with the electromagnetic heating device and the detection device; the control method of the cooking utensil comprises the following steps: receiving related parameters of the distance between the cooker and the electromagnetic heating device detected by a detection device; when the distance related parameters meet a first preset condition, it is judged that the pot is in a pot throwing state; when the pot is in the pot throwing state, the electromagnetic heating device is controlled to work at the pot throwing power matched with the pot throwing state. The problem that the cooking effect is affected due to the fact that the pot is almost in a heating stopping state in the pot throwing process due to repeated pot throwing in a short time is solved.

The invention provides an aerosol generating device and a coil assembly thereof, the aerosol generating device comprises a control assembly, the control assembly transmits an electric signal to the coil assembly through an electric connection part, the coil assembly comprises a ceramic substrate, a conductive heating body and a temperature feedback element, the ceramic substrate defines a heating cavity, and the conductive heating body is arranged in the heating cavity. The heating cavity is used for accommodating an aerosol forming substrate; the conductive heating body is arranged on the ceramic base body, and the conductive heating body heats the aerosol to form a substrate so as to generate aerosol; the temperature feedback element is arranged on the inner side or the outer side of the heating cavity and used for obtaining temperature related information of the conductive heating body and feeding back the temperature related information to the control assembly. The ceramic base body integrates the conductive heating body and the temperature feedback printed circuit, precision of temperature feedback control is achieved, real-time feedback adjustment can be conducted on the coil circuit according to the preset temperature, and stability and precision of the heating process are guaranteed.

The invention discloses an electric baking pan heating control circuit and an electric baking pan, and the electric baking pan heating control circuit comprises an eddy current feedback module which comprises a current supply module and a coil used for being arranged on a heating disc of the electric baking pan, and the current supply module is connected with the coil; the coil is used for generating alternating current and outputting the alternating current to the coil to generate an alternating magnetic field to act on the other heating disc of the electric baking pan to form eddy current; the weighing module is used for being arranged on a heating disc of the electric baking pan to detect the weight of the heating disc; and the detection control module is connected to the coil and the weighing module and used for detecting feedback current generated by the feedback action of the eddy current in the coil and adjusting the temperature and the heating time of a heating disc of the electric baking pan according to the feedback current and the weight detected by the weighing module. The heating control circuit of the electric baking pan is applied to the electric baking pan, the heating temperature and the heating time of the heating disc of the electric baking pan can be automatically adjusted according to the weight and the thickness of food, the food cooking effect of the electric baking pan is easier to control, and the taste of the cooked food is better.

An apparatus for an aerosol generating device may include a heating circuit to heat a heating arrangement. The heating arrangement is arranged to heat an aerosol generating material to thereby generate an aerosol. The apparatus may include a temperature sensing arrangement to sense a temperature of the device. The apparatus may include a controller to control a supply of energy to the heating circuit. The controller may determine a characteristic that is indicative that energy is being supplied to the heating circuit over a given time period, and a change in temperature sensed by the temperature sensing arrangement. The controller may take a control action if, based on the determined characteristic and the increase in temperature sensed by the temperature sensing arrangement. The controller may determine that one or more predetermined criteria that are indicative of a fault with the temperature sensing arrangement are satisfied.

A heater and / or a reactor system having a conductive medium and a conductor adjacent to the conductive medium is described. The system has a source of electrical energy coupled to the conductor to provide electrical energy and create a magnetic field around the conductive medium. The system produces an eddy current that heats the conductive medium. Also described are methods of heating using the heater and / or a reactor system.

The utility model discloses an electromagnetic induction heating module, heating equipment and a slab production line, and relates to the technical field of induction heating. The heating module comprises a shell, a coil, and a first magnetic conductive assembly, a second magnetic conductive assembly and a third magnetic conductive assembly which are sequentially arranged along the length direction of the coil, the first magnetic conductive assembly and the third magnetic conductive assembly respectively correspond to two side parts of a to-be-heated object, and the second magnetic conductive assembly corresponds to the middle part of the to-be-heated object; the first magnetic conductive assembly and the third magnetic conductive assembly each comprise a first magnetizer which is matched with the coil and can move up and down, and the second magnetic conductive assembly comprises a second magnetizer which is matched with the coil and is fixed. By adjusting the gap between the first magnetizer and the to-be-heated object, the heating temperature of the area corresponding to the to-be-heated object is adjusted, and the temperature uniformity of the to-be-heated object in the width direction is achieved.

A control device, for a water purifier, that dispenses hot water and that includes: an input unit that is configured to receive a command signal; and a controller that is configured to control the water purifier based on the command signal, wherein the controller is configured to: control power output of a heating unit that is configured to heat water stored in a hot water tank of the water purifier, and based on the power output of the heating unit, control temperature of hot water dispensed by the water purifier is disclosed.

To provide an inductor for use in an aerosol provision device.SOLUTION: The inductor includes an electrically conductive element and a secondary coil. The element includes an electrically conductive non-spiral first portion 601 coincident with a first plane, an electrically conductive non-spiral second portion 602 coincident with a second plane that is spaced from the first plane, and an electrically conductive connector 603 that electrically connects the first portion 601 to the second portion 602. The electrically conductive element is configured such that, when a varying electrical current is applied to the electrically conductive element, a corresponding varying electrical current is induced in the secondary coil.SELECTED DRAWING: Figure 6

The invention discloses an induction heating path optimization method suitable for a heterogeneous noise elimination structure, and particularly relates to the field of induction heating path optimization of the heterogeneous noise elimination structure, and the method comprises the steps: building a grid coordinate in a target region, collecting the heat conductivity coefficient, the specific heat capacity, the thermal resistance value and the induction coil gap value of each grid node in the grid coordinate, generating a thermal response model; and performing heat conduction calculation on the thermal response model and a preset heating power curve, calculating a temperature rise value of each grid node in a fixed preset heating time, marking the grid nodes of which the temperature rise values reach or exceed a safe temperature threshold and the adjacent grid nodes as heat concentration areas, and generating risk area data after gathering the heat concentration areas. A risk assessment and dynamic reordering mechanism based on local thermal characteristic difference is introduced in a heating path planning process, so that advanced identification and real-time avoidance of a heat concentration area are realized.

The utility model discloses a coil panel assembly and an electromagnetic heating device, and relates to the technical field of electromagnetic heating, the coil panel assembly comprises a support and at least one pair of winding units, in the pair of winding units, the current directions of the two winding units are set to be opposite, so that opposite magnetic poles are formed in the middle parts of the two winding units, and the winding units are arranged on the support. In at least one winding unit, a magnetic pole formed in the middle of the winding unit is close to one side of the corresponding second winding ring section, so that the magnetic field can be coupled with the position of the corresponding pot wall from one side close to the edge of the support, and the current directions of the lead sections, close to each other, of the two adjacent first winding ring sections are consistent. The distance d between every two adjacent first winding ring sections is larger than or equal to 5 mm, so that the magnetic field intensity of the wire connecting area between every two adjacent winding units is adjusted, the heating concentration degree of the corresponding pot bottom is weakened, and the heating uniformity of the pot can be further improved.

A method of controlling an induction cooking appliance having a cook surface and an induction coil, and with a cooking vessel disposed on the cook surface, includes sensing a cook-surface temperature during operation of an induction coil, sensing a thermal power delivered to the cooking vessel, and transmitting the cook-surface temperature and the thermal power to a controller module comprising a parameter set and a temperature module.

Cookware identification includes exciting a cooking vessel using an excitation component. It further includes sensing an acoustic response of the cooking vessel to the excitation using a sensor. It further includes determining a type of the cooking vessel based at least in part on the acoustic response of the cooking vessel to the excitation that is sensed via the sensor. Ingredient state detection includes sensing, using an acoustic sensor, vibrations pertaining to cooking of an ingredient in a cooking vessel. It further includes monitoring, over time, a signal that is based on the vibrations sensed by the acoustic sensor. It further includes, based on detecting a change in the signal that is based on the vibrations sensed by the acoustic sensor, determining a state of the ingredient.

A curb stone or paving stone charging device for charging an energy store of an electrically driven vehicle. The curb stone or paving stone charging device includes a main body, an inner receiving space which is delimited on a plurality of sides by the main body, a cover which closes the receiving space, a charging unit having components which are arranged in the receiving space, a charging socket which is connected mechanically at least indirectly to the cover, and a heating element which heats the cover. The main body is produced from a metal, a concrete, a natural stone, a plastic or a composite material.

The invention discloses a multi-frequency induction heating power supply and a control method thereof, and the power supply comprises an inverter circuit module which is used for outputting a multi-frequency driving voltage, a bidirectional switch module which is used for controlling a heating mode, and a multi-frequency resonance module which is used for multi-frequency induction heating and power decoupling. The control method corresponds to the multi-frequency induction heating power supply. According to the invention, the inversion module outputs a multi-frequency driving voltage, the bidirectional switch module controls a heating mode, and the multi-frequency resonance module realizes multi-frequency heating and power decoupling; the whole structure is simple, the module collaboration is high, a hardware basis is provided for multi-frequency heating, the requirements of different workpieces can be met, meanwhile, multi-frequency crosstalk is avoided in an assisting mode, and the heating reliability and adaptability are improved.

As an embodiment of the present disclosure, there is disclosed an aerosol generating device including: a heater configured to generate an aerosol by heating an aerosol generating substrate; a storage unit configured to store information regarding a first time period and a second time period for controlling a temperature of the heater; and a controller configured to control power supplied to the heater, wherein the controller, when the first time period time elapses after the temperature of the heater reaches the first target temperature, changes the temperature of the heater to a second target temperature for the second time period, and the sum of the first time period and the second time period is a time period in a preset change.

The invention discloses a synchronous control circuit of an induction cooker, and the circuit comprises a filtering module which is connected to a power grid input end VIN; the resonance module is connected with the filtering module; a collector electrode of the IGBT power tube is connected with the resonance module, and an emitter electrode of the IGBT power tube is grounded; and the single-end synchronous control module is connected with the resonance module and is used for detecting the resonance voltage output by the resonance module and generating a trigger signal when the resonance voltage is at a zero-crossing moment or a valley bottom moment, and the trigger signal is set to enable the IGBT power tube to be conducted so as to enable the resonance module to start to store energy. According to the synchronous control circuit of the induction cooker, the trigger signal is generated by accurately detecting the zero-crossing moment and the valley moment of the resonance voltage, so that the IGBT power tube can be switched on at the optimal time, the energy conversion efficiency and stability of the system are improved, the switching loss is reduced, and the heating performance and reliability of the induction cooker are improved.

The invention discloses an induction cooker driving circuit which comprises a mains supply input port, a control module, a rectifier module, a switching tube driving module, an oscillation module, an output port and a synchronization module. According to the technical scheme, a plurality of groups of corresponding switch tube driving modules and oscillation modules are configured, and the synchronization module is connected with one oscillation module. The control module detects the synchronizing signals of the coil panel connected with the output port and the resonant capacitor in the oscillating circuit through the synchronizing module and controls the switching tube driving modules according to the synchronizing signals, the switching tubes in the scheme do not need to be arranged in parallel, and the performance characteristics of the switching tubes can be brought into full play; state synchronization of each switch tube is guaranteed, and heating efficiency of the induction cooker is effectively improved.