US 12,453,378 B2
Heating engine control algorithm for non-nicotine e-vapor device
Niall Gallagher, Cambridge (GB); William Wykeham, Richmond, VA (US); Raymond W. Lau, Glen Allen, VA (US); Eric Hawes, Midlothian, VA (US); Terry Bache, Richmond, VA (US); Rangaraj S. Sundar, Midlothian, VA (US); and Jarrett Keen, Richmond, VA (US)
Assigned to ALTRIA CLIENT SERVICES LLC, Richmond, VA (US)
Filed by Altria Client Services LLC, Richmond, VA (US)
Filed on Jul. 28, 2023, as Appl. No. 18/361,257.
Application 18/361,257 is a division of application No. 16/786,181, filed on Feb. 10, 2020, granted, now 11,751,606.
Prior Publication US 2023/0363456 A1, Nov. 16, 2023
Int. Cl. A24F 40/46 (2020.01); A24F 40/51 (2020.01); A24F 40/53 (2020.01); A24F 40/60 (2020.01); A24F 40/57 (2020.01)
CPC A24F 40/46 (2020.01) [A24F 40/51 (2020.01); A24F 40/53 (2020.01); A24F 40/60 (2020.01); A24F 40/57 (2020.01)] 11 Claims
OG exemplary drawing
 
1. A method of controlling a heater of a non-nicotine e-vapor device, the method comprising:
determining, with a controller of the non-nicotine e-vapor device, a heater temperature value by
determining a resistance of the heater from one or more electrical attributes of the heater obtained by one or more heating engine sensors of the heater, and
obtaining, from a look-up table (LUT), based on the determined resistance, a first temperature value, the first temperature value being the heater temperature value;
obtaining, with the controller, a target temperature value by
detecting, from a removable pod included in the non-nicotine e-vapor device, power information indicating a plurality of temperature setpoints;
determining a current operation mode of the non-nicotine e-vapor device; and
selecting, as the target temperature value, a temperature setpoint, from among a plurality of temperature setpoints, that corresponds to the determined current operation mode of the non-nicotine e-vapor device; and
controlling, by a proportional-integral-derivative (PID) controller, a level of power provided to the heater by a power supply of the non-nicotine e-vapor device, based on the heater temperature value and the target temperature value.