US 12,459,783 B2
Method to determine a speed profile for a stairlift
Cornelis Boxum, Delfgauw (NL)
Assigned to TK Home Solutions B.V., Krimpen aan den IJssel (NL)
Filed by TK Home Solutions B.V., Krimpen aan den IJssel (NL)
Filed on Jan. 24, 2024, as Appl. No. 18/421,262.
Claims priority of application No. 23153841 (EP), filed on Jan. 30, 2023.
Prior Publication US 2024/0286870 A1, Aug. 29, 2024
Int. Cl. B66B 5/00 (2006.01); B66B 9/08 (2006.01); G01G 19/44 (2006.01)
CPC B66B 5/0037 (2013.01) [B66B 9/0807 (2013.01); B66B 9/0838 (2013.01); B66B 9/0846 (2013.01); G01G 19/44 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method to determine a speed profile for a stairlift for transporting a person along a staircase, wherein the stairlift comprises
a guide extending along the staircase;
a carriage being moveable along the guide and configured to carry the person;
a user interaction device configured for operating the stairlift; and
a control unit configured to measure a correlation between applied torque and resulting rotational acceleration for a first drive;
wherein the carriage is rotatable around a vertical axle by the first drive;
wherein the method comprises the steps of:
determining a specific mass moment of inertia for a specific person by measuring the correlation between applied torque and resulting rotational acceleration for the first drive with the specific person carried on the carriage;
setting an optimal torque according to the specific mass moment of inertia; and
determining the speed profile applying at the most the optimal torque with the first drive.