US 12,065,337 B2
Leveling system for lift device
Eric D. Hackenberg, Oshkosh, WI (US); Harish Sivasubramanian, Oshkosh, WI (US); Marcel Amsallen, Oshkosh, WI (US); Jesse Holmes, Oshkosh, WI (US); Peter Gilbert, Oshkosh, WI (US); and Milan Klimes, Oshkosh, WI (US)
Assigned to Oshkosh Corporation, Oshkosh, WI (US)
Filed by Oshkosh Corporation, Oshkosh, WI (US)
Filed on Oct. 23, 2020, as Appl. No. 17/078,976.
Application 17/078,976 is a continuation of application No. 16/673,145, filed on Nov. 4, 2019, granted, now 10,850,963.
Claims priority of provisional application 62/813,550, filed on Mar. 4, 2019.
Claims priority of provisional application 62/813,547, filed on Mar. 4, 2019.
Claims priority of provisional application 62/755,882, filed on Nov. 5, 2018.
Prior Publication US 2021/0039935 A1, Feb. 11, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. B66F 11/04 (2006.01); B60G 17/0165 (2006.01); B60K 7/00 (2006.01); B62D 7/14 (2006.01); B62D 21/18 (2006.01); B66F 9/075 (2006.01); B66F 13/00 (2006.01); B66F 17/00 (2006.01)
CPC B66F 13/00 (2013.01) [B60G 17/0165 (2013.01); B60K 7/0007 (2013.01); B62D 7/142 (2013.01); B62D 21/18 (2013.01); B66F 9/07586 (2013.01); B66F 11/044 (2013.01); B66F 11/046 (2013.01); B66F 17/006 (2013.01); B60G 2202/41 (2013.01); B60G 2202/413 (2013.01); B60G 2204/47 (2013.01); B60G 2204/4702 (2013.01); B60G 2204/62 (2013.01); B60G 2204/81 (2013.01); B60G 2204/8102 (2013.01); B60G 2204/82 (2013.01); B60G 2204/8304 (2013.01); B60G 2400/204 (2013.01); B60G 2400/25 (2013.01); B60G 2500/30 (2013.01); B60G 2600/182 (2013.01); B60G 2600/21 (2013.01); B60G 2800/914 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A vehicle system comprising:
a controller configured to be communicably coupled to a plurality of actuators of a vehicle that facilitate repositioning a plurality of tractive elements coupled to a chassis of the vehicle, wherein the plurality of actuators have a maximum length and a minimum length, the controller configured to:
control the plurality of actuators to selectively reposition each of the plurality of tractive elements through a range of motion to attempt to maintain the chassis level; and
drive each of the plurality of actuators toward a mid-stroke position while continuing to attempt to maintain the chassis level and while the vehicle is moving;
wherein, when driving the plurality of actuators toward the mid-stroke position, the controller is configured to:
determine a current length of a most extended actuator of the plurality of actuators;
determine a current length of a least extended actuator of the plurality of actuators;
determine an adjustment value based on the current length of the most extended actuator, the current length of the least extended actuator, the maximum length, and the minimum length; and
adjust each of the plurality of actuators based on the adjustment value to drive the plurality of actuators toward the mid-stroke position.