A method to control a laundry drying machine having a rotatable drum, a motor for rotating the drum, and a hot air generator for supplying a drying airflow to the drum. The method includes: collecting physicals quantities during an initial phase of said drying cycle, performing an estimation of polynomial coefficients of a cubic polynomial model indicative of an estimated change of a laundry moisture value over the time based on respective linear polynomial models comprising the collected physicals quantities, performing an estimation of the laundry moisture value by the cubic polynomial model based on the estimated polynomial coefficients, and controlling the motor and hot air generator during a drying cycle, based on one or more physicals quantities associated with the drum loaded with laundry, the electric motor and the hot air generator.

A method of operating a laundry treatment appliance includes performing a selected laundry treatment operation on a laundry load in accordance with an original set of operating parameters, obtaining a feedback input from a user regarding a dryness level of the laundry load, adjusting at least one operating parameter of the original set of operating parameters, and generating a new set of operating parameters including the at least one adjusted operating parameter.

A method of operating a laundry treatment appliance includes performing a selected laundry treatment operation on a laundry load in accordance with an original set of operating parameters, obtaining a feedback input from a user regarding a dryness level of the laundry load, adjusting at least one operating parameter of the original set of operating parameters, and generating a new set of operating parameters including the at least one adjusted operating parameter.

A method for operating a dryer appliance includes, after drying articles within the dryer appliance, receiving data corresponding to an activation signal for an extended tumble from a remote user device, tracking a number of cycles for which the extended tumble is not a default setting for the dryer appliance, and automatically adjusting the extended tumble to the default setting for the dryer appliance or transmitting data corresponding to an extended tumble alert based on the tracked number of cycles.

A method for operating a dryer appliance includes, after drying articles within the dryer appliance, receiving data corresponding to an activation signal for an extended tumble from a remote user device, tracking a number of cycles for which the extended tumble is not a default setting for the dryer appliance, and automatically adjusting the extended tumble to the default setting for the dryer appliance or transmitting data corresponding to an extended tumble alert based on the tracked number of cycles.

A drying time prediction method includes: obtaining an operation condition set at the start of operation of a first dryer; obtaining the first actual operation time period of each of at least one first operation performed by the first dryer; obtaining operation finish time information from a learned model by inputting, to the learned model, the operation condition and first actual information that is based on the first actual operation time period, the operation finish time information being related to the finish time of the operation started under the operation condition; and outputting first information based on the operation finish time information.

A drying time prediction method includes: obtaining an operation condition set at the start of operation of a first dryer; obtaining the first actual operation time period of each of at least one first operation performed by the first dryer; obtaining operation finish time information from a learned model by inputting, to the learned model, the operation condition and first actual information that is based on the first actual operation time period, the operation finish time information being related to the finish time of the operation started under the operation condition; and outputting first information based on the operation finish time information.

A method of operating a dryer appliance includes performing a first sensor cycle of the dryer appliance. The first sensor cycle includes rotating a drum of the dryer appliance and activating a heating system of the dryer appliance according to a first set of cycle parameters. The method also includes detecting one or more user interactions with the dryer appliance and inferring from the one or more detected user interactions that the dry performance of the first sensor cycle was unsatisfactory. The method further includes defining a second set of cycle parameters in response to the one or more detected user interactions. The method also includes performing a second sensor dry cycle of the dryer appliance according to the second set of cycle parameters after the first sensor dry cycle.

A wireless sensing device disposed a drum along with laundry to measure humidity in the drum, thereby increasing accuracy in estimation of a degree of dryness, a dryer for determining a degree of dryness of the laundry using the wireless sensing device, and a method of controlling the dryer. The wireless sensing device includes a sensing module including a humidity sensor for measuring humidity in a drum of a dryer into which the wireless sensing module is thrown; a sensor communication module transmitting or receiving data with a main communication module of the dryer through wireless communication; a sensor controller configured to control the sensor communication module to transmit a humidity value corresponding to an output of the sensing module to the main communication module; and a sensor power supplier supplying power to the sensing module, the sensor communication module, and the sensor controller.

A wireless sensing device disposed a drum along with laundry to measure humidity in the drum, thereby increasing accuracy in estimation of a degree of dryness, a dryer for determining a degree of dryness of the laundry using the wireless sensing device, and a method of controlling the dryer. The wireless sensing device includes a sensing module including a humidity sensor for measuring humidity in a drum of a dryer into which the wireless sensing module is thrown; a sensor communication module transmitting or receiving data with a main communication module of the dryer through wireless communication; a sensor controller configured to control the sensor communication module to transmit a humidity value corresponding to an output of the sensing module to the main communication module; and a sensor power supplier supplying power to the sensing module, the sensor communication module, and the sensor controller.