# US 11,992,063 B2 · Method for controlling electric power of heater of aerosol generator, and aerosol generator > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,992,063 B2 - Document ID: US11992063B2 - Status: Granted - Kind: B2 - Application number: 17/056,502 - Filed: 2019-10-23 - Published: 2021-06-17 - Granted: 2024-05-28 - Earliest claimed: 2018-11-16 - Assignees: Kt&G Corporation - Applicants: Kt&G Corporation - Inventors: Jae Min Lee - Web page: https://patentgrep.com/patent/US11992063B2 ## CPC - A24F 40/57: Temperature control - G05B 6/02: electric - H05B 1/0227: {Applications} - H05B 1/0244: {Heating of fluids (H05B1/0247 takes precedence)} - A24D 1/20: Cigarettes specially adapted for simulated smoking devices - A24F 40/10: Devices using liquid inhalable precursors - A24F 40/20: Devices using solid inhalable precursors - A24F 40/30: Devices using two or more structurally separated inhalable precursors, e.g. using two liquid precursors in two cartridges - A24F 40/465: specially adapted for induction heating - G05B 11/36: with provision for obtaining particular characteristics, e.g. proportional, integral, differential - A24F: SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES (inhaling appliances for medical purposes, shaped like cigars, cigarettes or pipes A61M15/06) - G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G) - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - A24D: CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES ## Abstract An embodiment of the present invention discloses an aerosol-generating device, the device including a heater for heating an aerosol-generating substrate, and a controller for controlling power supplied to the heater through a proportional integral differential (PID) method, based on an integral control weight determined according to an initial temperature of the heater. ## Claims ### Claim 1 An aerosol-generating device comprising: a heater configured to heat an aerosol-generating substrate; and a controller configured to: control a first smoking section and a second smoking section consecutive to the first smoking section, determine a temperature after smoking ends in the first smoking section as an initial temperature of the heater, and control power supplied to the heater in the second smoking section through a proportional integral differential (MD) method, based on an integral control weight determined according to the initial temperature of the heater. ### Claim 2 (depends on 1) The aerosol-generating device of claim 1, wherein the controller calculates the integral control weight based on the initial temperature of the heater which is measured after a preset time has elapsed after a temperature of the heater reaches a preset preheating temperature. ### Claim 3 (depends on 1) The aerosol-generating device of claim 1, wherein the controller calculates the integral control weight based on an integral control gain value used when the heater is preheated to 50° C. ### Claim 4 (depends on 1) The aerosol-generating device of claim 1, wherein the controller calculates the integral control weight based on a highest temperature which the heater has reached in the first smoking section. ### Claim 5 (depends on 1) The aerosol-generating device of claim 1, wherein the controller calculates the integral control weight based on a highest integral control gain value in the first smoking section, by referring to integral control gain values used in the first smoking section of the heater. ### Claim 6 (depends on 1) The aerosol-generating device of claim 1, wherein the controller determines the integral control weight by referring to a table in which integral control weights are respectively associated with initial temperatures of the heater. ### Claim 7 (depends on 1) The aerosol-generating device of claim 1, wherein the integral control weight is equal to or greater than 20. ### Claim 8 (depends on 1) The aerosol-generating device of claim 1, wherein the integral control weight is equal to or less than 70. ### Claim 9 (depends on 1) The aerosol-generating device of claim 1, wherein the integral control weight is in a range of 20 to 70. ### Claim 10 A method of controlling power supplied to a heater of an aerosol-generating device in a first smoking section and a second smoking section, the method comprising: determining a temperature after smoking ends in the first smoking section as an initial temperature of a heater of an aerosol-generating device; determining an integral control weight for integral control in proportional integral differential control based on the determined initial temperature of the heater; and maintaining a temperature of the heater in the second smoking section consecutive to the first smoking section based on the determined integral control weight after the temperature of the heater reaches a preheating temperature. ### Claim 11 (depends on 10) The method of claim 10, wherein the determining of the integral control weight includes calculating the integral control weight based on the initial temperature of the heater which is measured after a certain period of time has elapsed after the temperature of the heater reaches a preset preheating temperature. ### Claim 12 (depends on 10) The method of claim 10, wherein the determining of the integral control weight includes calculating the integral control weight based on an integral control gain value used when the heater is preheated to 50° C. ### Claim 13 (depends on 10) The method of claim 10, wherein the determining of the integral control weight includes calculating the integral control weight based on a highest temperature which the heater has reached in the first smoking section. ### Claim 14 (depends on 10) The method of claim 10, wherein the determining of the integral control weight includes calculating the integral control weight based on a highest integral control gain value in the first smoking section, by referring to integral control gain values used in the first smoking section. ### Claim 15 (depends on 10) The method of claim 10, wherein the determining of the integral control weight includes determining the integral control weight by referring to a table in which integral control weights are respectively associated with initial temperatures of the heater. ### Claim 16 (depends on 10) The method of claim 10, wherein the integral control weight is equal to or greater than 20. ### Claim 17 (depends on 10) The method of claim 10, wherein the integral control weight is equal to or less than 70. ### Claim 18 (depends on 10) The method of claim 10, wherein the integral control weight is in a range of 20 to 70. ### Claim 19 (depends on 10) A computer-readable recording medium storing a program for executing the method according to claim 10.