US 11,945,705 B2
System and method for controlling a maximum vehicle speed for an industrial vehicle based on a calculated load
Joe K. Hammer, St. Marys, OH (US); and Mark E. Addison, Ludlow Falls, OH (US)
Assigned to Crown Equipment Corporation, New Bremen, OH (US)
Filed by Crown Equipment Corporation, New Bremen, OH (US)
Filed on Nov. 23, 2021, as Appl. No. 17/456,231.
Application 17/456,231 is a continuation of application No. 16/562,715, filed on Sep. 6, 2019, granted, now 11,352,243.
Claims priority of provisional application 62/730,810, filed on Sep. 13, 2018.
Prior Publication US 2022/0081270 A1, Mar. 17, 2022
Int. Cl. B66F 9/075 (2006.01); B60W 40/105 (2012.01); B60W 40/13 (2012.01); B60W 50/12 (2012.01)
CPC B66F 9/07559 (2013.01) [B60W 40/105 (2013.01); B60W 40/13 (2013.01); B60W 50/12 (2013.01); B60W 2300/121 (2013.01); B60W 2530/10 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A method for controlling a maximum vehicle speed for an industrial vehicle, comprising:
determining, by a processor of the industrial vehicle, a torque applied to a traction wheel of the industrial vehicle;
determining, by the processor of the industrial vehicle, an acceleration of the industrial vehicle while the torque is applied to the traction wheel;
based at least in part on the acceleration and the torque applied to the traction wheel, calculating, by the processor of the industrial vehicle, a load being moved by the industrial vehicle; and
controlling, by the processor of the industrial vehicle, the maximum speed of the industrial vehicle based on the calculated load being moved by the industrial vehicle,
wherein calculating the load comprises:
calculating a set comprising a predetermined number of individual load values of the load being moved by the industrial vehicle in response to the industrial vehicle accelerating above a first predefined value and traveling at least a predetermined distance; and
averaging the predetermined number of individual values to determine a respective set load value for the set;
wherein no further individual load values are calculated after the respective set load value for the set is determined until at least one of the following vehicle conditions is met:
a) an acceleration of the industrial vehicle is less than the first predefined value, or
b) a speed of the industrial vehicle is less than a second predefined value.