US 12,296,898 B2
Jogwheel device and powered feedback and caster effect for drive-by-wire jogwheel design
Zachary A. Lyzen, Seattle, WA (US); Adam J. Woodrum, Wakeman, OH (US); Adam Hiller, Jeromesville, OH (US); and Jay E. Maggard, Polk, OH (US)
Assigned to MTD PRODUCTS INC, Valley City, OH (US)
Filed by MTD PRODUCTS INC, Valley City, OH (US)
Filed on May 4, 2022, as Appl. No. 17/736,141.
Claims priority of provisional application 63/312,910, filed on Feb. 23, 2022.
Claims priority of provisional application 63/183,939, filed on May 4, 2021.
Prior Publication US 2022/0363306 A1, Nov. 17, 2022
Int. Cl. B62D 5/00 (2006.01); A01D 101/00 (2006.01); B62D 1/02 (2006.01); B62D 5/04 (2006.01)
CPC B62D 5/006 (2013.01) [B62D 1/02 (2013.01); B62D 5/046 (2013.01); A01D 2101/00 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A drive-by-wire steering system for a power equipment machine, comprising:
a steering interface system comprising:
a steering interface configured to receive rotational input from a user;
a steering interface position encoder configured to determine a control angular displacement of the steering interface relative to a center angle of the steering interface;
a steering interface motor configured to rotate the steering interface; and
a steering interface motor controller configured to control activation of the steering interface motor to apply one or more torques to the steering interface;
a power steering system comprising:
one or more steerable wheels;
one or more steering position encoders configured to determine a wheel angular displacement of the one or more steerable wheels relative to a center angle of the one or more steerable wheels;
one or more steering motors configured to turn the one or more steerable wheels;
one or more steering motor controllers configured to control activation of the one or more steering motors to turn the one or more steerable wheels toward a target wheel angular displacement, wherein the target wheel angular displacement is the control angular displacement divided by a steering ratio,
wherein the steering interface system and the power steering system communicate via a communication link, wherein the communication link is one of a wired communication link or a wireless communication link; and
wherein, in response to the target wheel angular displacement exceeding a maximum wheel angle of the one or more steerable wheels, the steering interface position encoder is configured to redefine the center angle of the steering interface such that the control angular displacement becomes the maximum wheel angle multiplied by the steering ratio.