67results about "Controllers with pulse-train output signal" patented technology

A nicotine e-vaping device includes a heater, a power control circuit, and a memory module. The heater element is configured to heat nicotine pre-vapor formulation. The power control circuit is coupled to the heater element through a wire. The power control circuit is configured to apply a pulse width modulated power signal to the heater element through the wire, and to receive information over the wire. The memory module is configured to detect a plurality of pulses in the pulse width modulated power signal, record information based on the detected plurality of pulses, and output the recorded information to the power control circuit via the wire.

A nicotine e-vaping device includes a heater, a power control circuit, and a memory module. The heater element is configured to heat nicotine pre-vapor formulation. The power control circuit is coupled to the heater element through a wire. The power control circuit is configured to apply a pulse width modulated power signal to the heater element through the wire, and to receive information over the wire. The memory module is configured to detect a plurality of pulses in the pulse width modulated power signal, record information based on the detected plurality of pulses, and output the recorded information to the power control circuit via the wire.

There is provided a method of controlling an aerosol-generating system including an aerosol-generating device including a cavity to receive an aerosol-forming substrate, an inductive heating arrangement including an inductive heating element including a susceptor heatable by penetration with a varying magnetic field to heat the substrate, first and second inductor coils, and a power supply; the method including initiating heating of the substrate in the cavity by a first varying current in the first coil to generate a first varying magnetic field that heats a first portion of the element, and controlling the first current to increase a temperature of the first portion with a first profile; and subsequently driving a second varying current in the second coil to generate a second varying magnetic field that heats a second portion of the element, and controlling the second current to increase a temperature of the second portion with a second profile.

An aerosol-generating device is disclosed. The aerosol-generating device includes a body, a heater disposed in the body and including a carbonaceous material, a temperature sensor configured to output a signal corresponding to the temperature of the heater, a power supply configured to supply power to the heater, a heater driving circuit electrically connected to the heater and the power supply, and a controller configured to control power supplied to the heater. The controller determines a temperature increase rate of the heater based on the signal received from the temperature sensor, and upon determining that the temperature increase rate is equal to or higher than a predetermined rate, the controller controls the heater driving circuit to interrupt supply of power to the heater.

Method for detecting and analyzing a partial discharge (PD) in an electrical signal to be analyzed (1) generated by MLI and originating from electrical equipment (10) in an aeronautical environment, comprising a detection phase (S1), comprising a step of detecting (E10) by means of a sensor (91) the electrical signal to be analyzed (1), and a step of recognizing (E1) a possible partial discharge by comparing this electrical signal with at least one signature signal (2) representative of a partial discharge (PD), and, an analysis phase (S2), comprising a step of decomposing (E4) the electrical signal (1) into a sequence of patterns, and a step of assigning (E5) the detected partial discharges (PD) to these patterns. Figure for the abstract: Fig. 1

A control device of an aerosol generating device includes a main control unit, and is connectable to a battery and a heater coil. The main control unit is configured to carry out one or more execution loops, a first execution loop includes applying a first power output to the heater coil for a first number of steps, disabling the first power output and thereby switching off the heater coil in a second number of steps, measuring a first heater coil voltage of the heater coil in a third number of steps, pausing with the heater coil switched off for a fourth number of steps, and measuring a first off-load battery voltage of the battery in a fifth number of steps. The main control unit is further configured to calculate an updated power output based upon the first heater coil voltage and first off-load battery voltage.

Described herein is an acoustic generator device. The sounder device includes a sounder circuit including a piezoelectric element, a capacitor having a predefined capacitance configured in parallel with the sounder circuit, where the sounder circuit is connected to the capacitor and a power source via a switch. The sounder device further includes a controller configured to: issue a voltage control signal to effect power supply from the power source to the capacitor to charge the capacitor to a predetermined voltage, and issue a first switching control signal to control switching of the switch at a predetermined duty cycle, and a capacitor coupled to the acoustic generator circuit such that the capacitor can supply the predetermined voltage across the acoustic generator circuit at the predetermined duty cycle, where the acoustic generator circuit is configured to generate an acoustic signal having a predefined sound level and tone based on the predetermined voltage supplied to the acoustic generator circuit at the predetermined duty cycle.

A method of controlling a hot wire anemometer (HWA) of a non-nicotine e-vaping device includes controlling, by a first PID controller, a level of power applied by the non-nicotine e-vaping device to the HWA based on a temperature of a heated element of the HWA and a temperature setpoint; generating a puff detection signal indicating whether or not a puff is currently occurring with respect to the non-nicotine e-vaping device; and while the puff detection signal indicates that a puff is not currently occurring with respect to the non-nicotine e-vaping device, detecting, by a second PID controller, a change in an ambient temperature of the HWA, and controlling, by the second PID controller, the temperature setpoint such that the temperature setpoint changes in response to the detected change in the ambient temperature of the HWA.

A method of controlling a hot wire anemometer (HWA) of a non-nicotine e-vaping device includes controlling, by a first PID controller, a level of power applied by the non-nicotine e-vaping device to the HWA based on a temperature of a heated element of the HWA and a temperature setpoint; generating a puff detection signal indicating whether or not a puff is currently occurring with respect to the non-nicotine e-vaping device; and while the puff detection signal indicates that a puff is not currently occurring with respect to the non-nicotine e-vaping device, detecting, by a second PID controller, a change in an ambient temperature of the HWA, and controlling, by the second PID controller, the temperature setpoint such that the temperature setpoint changes in response to the detected change in the ambient temperature of the HWA.

An aerosol delivery device is provided. The aerosol delivery device includes a power source, an aerosol production component, a sensor to produce measurements of atmospheric air pressure in an air flow path through at least one housing, and a switch coupled to and between the power source and the aerosol production component. The aerosol delivery device also includes processing circuitry that determines a difference between the measurements of atmospheric air pressure and a reference atmospheric air pressure. Only when the difference is at least a threshold difference, the processing circuitry outputs a signal to cause the switch to switchably connect and disconnect an output voltage from the power source to the aerosol production component to adjust power provided to the aerosol production component to a power target that is variable according to a predetermined relationship between the difference and the power target.

A method for detecting and analyzing a partial discharge (PD) in an electrical signal (1) to be analyzed, generated by PWM and originating from electrical equipment (10) in an aeronautical environment, comprising a detection phase (S1), including a detection step (E10) using a sensor (91) of the electrical signal to be analyzed (1), and a recognition step (E1) of a possible partial discharge by comparing this electrical signal with at least one signature signal (2) representative of a partial discharge (PD), and an analysis phase (S2), including a decomposition step (E4) of the electrical signal (1) into a sequence of patterns, and an assignment step (E5) of the detected partial discharges (PD) to these patterns. Figure for the abstract: Fig. 1

An aerosol delivery device is provided. The aerosol delivery device includes a power source and a heating element that can be powered to heat and vaporize components of an aerosol precursor composition. The aerosol delivery device also includes a processing circuit configured to control voltage from the power source to the heating element to power the heating element. The aerosol delivery device further includes an infrared temperature sensor coupled to the processing circuit and configured to measure infrared energy emitted by the heating element or the aerosol precursor composition. The processing circuit is configured to determine the temperature of the heating element or the aerosol precursor composition from the infrared energy measured by the infrared temperature sensor and adjust the voltage from the power source to the heating element when the temperature deviates from a predetermined set point.

The invention discloses an event-triggered time-varying gain pulse control method of a nonlinear system under DoS attack. The method comprises the following steps: constructing a state space model of a nonlinear system, constructing a pulse event trigger time model based on a Lyapunov function, and constructing a DoS attack model based on the duration and frequency of a DoS attack; based on the state space model, the pulse event trigger time model and the DoS attack model of the nonlinear system, carrying out stability analysis on the nonlinear system, and solving a time-varying feedback gain matrix through a linear matrix inequality; and designing a time-varying gain pulse controller based on the time-varying feedback gain matrix, and performing event-triggered time-varying gain pulse control of the nonlinear system under the DoS attack based on the time-varying gain pulse controller. According to the method, the DoS attack can be resisted, the convergence rate of the nonlinear system can be improved, and the resources of the nonlinear system are saved.

An aerosol generating device and a controlling method thereof are provided. An aerosol generating device includes: a battery configured to supply power for generating an aerosol from an aerosol generating material; a converter configured to convert a supply voltage from the battery into a constant voltage of a predetermined level; a heater configured to heat the aerosol generating material using the supply voltage; a detection circuit configured to detect a change in resistance of the heater by applying the constant voltage output from the converter and performing a current sensing on the heater with a resistance value; and a controller configured to control the heater for generating the aerosol by switching between a monitoring mode for performing the detection of the change in the resistance of the heater using the constant voltage and a heating mode for heating the heater using the supply voltage.

A battery system and a method of controlling the same are provided, the battery system including a battery management module, a battery module, and a controller. The battery management module includes a main switch between an external terminal and a battery terminal and a heating switch between the external terminal and a heating terminal. The battery module includes a cell, a heating element, and a control switch connected to the heating element. The controller is configured to detect connection with a charger, detect a temperature of the cell, turn off the main switch and turn on the heating switch and the control switch to supply heating power from the charger to the heating element when the temperature is lower than a first value, and turn off the heating switch and turn on the main switch to supply charging power from the charger to the cell when the temperature becomes higher than a second value by the heating element.

Disclosed is a cleaner including a cleaner main body including a battery, and a wet mopping brush detachably connected to the cleaner main body and driven by electric power supplied from the battery. The wet mopping brush includes: at least one mopping pad disposed on a lower portion of a brush body to contact a surface to be cleaned; a motor configured to rotate the at least one mopping pad; a heater for heating water supplied from the water tank to the heating tank; the water sprayer is used for spraying the water heated by the heater towards the surface to be cleaned; a pump for providing a pressure for moving water from the water tank to the water sprayer; and at least one processor for adjusting an amount of power supplied to at least one of the motor, the heater, and the pump based on a first current threshold available in the wet mopping brush.

To provide an improved aerosol delivery device capable of extending usability of the device.SOLUTION: An aerosol delivery device 100 includes a power source 212, an aerosol production component 220, a sensor 210 to produce measurements of atmospheric air pressure in an air flow path through at least one housing 206, and a switch coupled to and located between the power source and the aerosol production component. The aerosol delivery device also includes processing circuitry that determines a difference between the measurements of atmospheric air pressure and a reference atmospheric air pressure. Only when the difference is at least a threshold difference, the processing circuitry outputs a signal to cause the switch to switchably connect and disconnect an output voltage from the power source to the aerosol production component to adjust power provided to the aerosol production component to a power target that is variable according to a predetermined relationship between the difference and the power target.SELECTED DRAWING: Figure 2

To provide a non-nicotine e-vaping device.SOLUTION: A non-nicotine e-vaping device includes a heater element, a power control circuit, and a memory module. The heater element is configured to heat a non-nicotine pre-vapor formulation, the non-nicotine pre-vapor formulation being devoid of nicotine and including at least one non-nicotine compound. The power control circuit is coupled to the heater element through a wire. The power control circuit is configured to apply a pulse width modulated power signal to the heater element through the wire, and to receive information over the wire. The memory module is configured to detect a plurality of pulses in the pulse width modulated power signal, record information based on the detected plurality of pulses, and output the recorded information to the power control circuit via the wire.SELECTED DRAWING: Figure 1

The present invention relates to aerosol delivery devices, such as smoking articles, that generate aerosols. The aerosol delivery device includes a power source, an aerosol generating component, a sensor for generating a measurement of atmospheric pressure in an airflow path through at least one housing, and a switch coupled to and between the power source and the aerosol generating component. The aerosol delivery device also includes a processing circuit that determines a difference between the measured atmospheric pressure and a reference atmospheric pressure. Only when the difference is at least a threshold difference does the processing circuit output a signal to cause the switch to switchably connect and disconnect an output voltage from the power source to the aerosol generating component to adjust the power provided to the aerosol generating component to a power target that is variable according to a predetermined relationship between the difference and the power target.

To provide a method that can prevent the denaturation of nicotine molecules and salts during aerosolization and deliver nicotine at a higher rate than heated coil ENDS. [Solution] The present invention relates to a composition comprising nicotine and / or a salt of nicotine, and more particularly to a composition comprising nicotine and / or a salt of nicotine for ultrasonic aerosolization.

The invention discloses a control and stability analysis method for a DC-DC converter based on fractional order PI lambda control. The control and stability analysis method comprises the following steps: firstly, establishing a system state equation for the DC-DC converter; secondly, based on small signal modeling, establishing a linear analysis model of the DC-DC converter alternating current small signal; a transfer function between the duty ratio and the converter output voltage is obtained through Laplace transformation, and a fractional order closed-loop characteristic equation of the DC-DC converter system under fractional order PI lambda control is obtained; and finally, drawing an Nyquist graph of the DC-DC converter system under different parameters, and judging the stability of the system through an Nyquist criterion. According to the method, the influence of the integral order lambda in the fractional order PI lambda controller on the system stability can be simply and conveniently analyzed, and the control parameter change range of the PI lambda controller with different integral orders under the condition that the system stability is ensured.

A method of controlling a hot wire anemometer (HWA) of a nicotine e-vaping device includes controlling, by a first PID controller, a level of power applied by the nicotine e-vaping device to the HWA based on a temperature of a heated element of the HWA and a temperature setpoint; generating a puff detection signal indicating whether or not a puff is currently occurring with respect to the nicotine e-vaping device; and while the puff detection signal indicates that a puff is not currently occurring with respect to the nicotine e-vaping device, detecting, by a second PID controller, a change in an ambient temperature of the HWA, and controlling, by the second PID controller, the temperature setpoint such that the temperature setpoint changes in response to the detected change in the ambient temperature of the HWA.

To provide an aerosol delivery device such as a smoking article that produces aerosol.SOLUTION: An aerosol delivery device 700 is provided that includes a power source 708, a heating element 710, a switch 720 coupled between the power source 708 and the heating element 710, and processing circuitry 706 coupled to the switch 720. The processing circuitry 706 can output a PWM signal during a heating time period to cause the switch 720 to switchably connect and disconnect the output voltage to the heating element 710 to power the heating element 710. The processing circuitry 706 outputs a pulse of known current to the heating element 710, and measures voltage across the heating element 710 between adjacent pulses of the PWM signal. The processing circuitry 706 calculates the resistance of the heating element 710 based on the known current and the voltage, calculates the temperature of the heating element 710 based on the resistance, and adjusts a duty cycle of the PWM signal when the temperature deviates from a predetermined target.SELECTED DRAWING: Figure 7

Provided is an aerosol generating device distributing and transmitting power from a battery to two heaters, wherein the aerosol generating device includes the battery, a first heater heating a first aerosol generating substrate, a second heater heating a second aerosol generating substrate, and a controller controlling power supplied from the battery to the first heater and the second heater, wherein the controller controls power to be supplied from the battery to the first heater and the second heater at different times.

The application discloses a time sequence modulation high-voltage pulse power generator and a time sequence modulation method thereof, and the generator comprises a charging unit, an energy storage unit, a trigger control unit, a switching unit, an output state diagnosis unit and a time sequence modulation control unit; the output state diagnosis unit is used for collecting the current and voltage of a load in real time; the time sequence modulation control unit is used for generating a segmented switching delay trigger regulation strategy, and specifically comprises the following steps: in a front edge stage, the voltage of the load is rapidly brought to a set threshold value, and then a progressive delay compensation algorithm is started to make the voltage reach a target voltage; in a flat top stage, based on the current change rate and the difference between the actual voltage and the target voltage, a switching device driving signal delay is output through a fuzzy-PID hybrid controller, meanwhile, an integral coefficient is adjusted according to the load impedance change trend, and finally, the switching device driving signal delay is output based on the adjusted integral coefficient. The application can efficiently and stably modulate the time sequence for the nonlinear impedance load characteristics.

To provide a method of controlling an aerosol generation system, the aerosol generation system, and an aerosol generation device for the aerosol generation system.SOLUTION: An induction heating arrangement of an aerosol generation system includes: an induction heat generator 10 including at least one of susceptors 12, 14 capable of being heated by transmission of a magnetic field that varies for heating an aerosol formation base body; a first inductor coil 32; and a second inductor coil 34. A first variable current is driven in the first inductor coil such that the first inductor coil generates a first variable magnetic field that heats a first portion of the induction heat generator. The first variable current is controlled such that a temperature in a first portion of the induction heat generator increases from an initial temperature according to a first operation temperature profile.SELECTED DRAWING: Figure 1

An aerosol generating device that determines abnormal operation is provided. [Solution] The aerosol generating device includes a battery, a first control circuit that converts power received from the battery into a pulse width modulation (PWM) signal, a heating unit that heats an aerosol product based on the PWM signal received from the first control circuit, and a second control circuit that transmits a command to the first control circuit in response to a user input to the first control circuit to cause the first control circuit to generate the PWM signal. The first control circuit determines abnormal operation of the second control circuit, and the second control circuit determines abnormal operation of the aerosol generating device. The aerosol generating device can further determine specific operating conditions and prevent abnormal operation of the heating unit.

A sounder device includes a sounder circuit that comprises a piezo-electric element, a capacitor of a predefined capacitance configured parallel to the sounder circuit, the sounder circuit is connected to the capacitor, and a power source via a switch. The sounder device further includes a controller that is configured to issue a voltage control signal to enable supply of electrical power from the power source to the capacitor to charge the capacitor to a predetermined voltage, and issue a first switching control signal to control switching of the switch at a predetermined duty cycle, to enable the capacitor to supply the predetermined voltage across the sounder circuit at the predetermined duty cycle, the sounder circuit is configured to generate acoustic signal of a predefined sound level and tone based on the predetermined voltage being supplied to the sounder circuit at the predetermined duty cycle.

A heater assembly for heating a cigarette accommodated in an aerosol generating device includes a heating element that extends in a longitudinal direction of the cigarette and includes a ferromagnetic substance for generating heat by an external magnetic field, and a temperature sensor that measures a temperature of the heating element. The heater assembly is disposed at an inner end portion of an accommodation space provided in the aerosol generating device to accommodate the cigarette.