US 12,005,879 B2
Braking system for test vehicle
David Wirthl, Linz (AT); Lukas Proprentner, Linz (AT); Alexander Brennsteiner, Linz (AT); Kyrill Krajoski, Vöcklabruck (AT); and Patrick Hofmanninger, Gaspoltshofen (AT)
Assigned to Humanetics Austria GmbH, Linz (AT)
Filed by Humanetics Austria GmbH, Linz (AT)
Filed on Dec. 19, 2022, as Appl. No. 18/068,200.
Application 18/068,200 is a continuation of application No. 16/994,018, filed on Aug. 14, 2020, granted, now 11,541,858.
Claims priority of provisional application 62/886,554, filed on Aug. 14, 2019.
Prior Publication US 2023/0121504 A1, Apr. 20, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B60T 8/88 (2006.01); B60T 8/171 (2006.01); B60T 8/1761 (2006.01); B60T 13/14 (2006.01); B60T 13/66 (2006.01)
CPC B60T 8/88 (2013.01) [B60T 8/171 (2013.01); B60T 8/1761 (2013.01); B60T 13/142 (2013.01); B60T 13/66 (2013.01); B60T 2250/04 (2013.01)] 31 Claims
OG exemplary drawing
 
1. An overrunable test vehicle including an electronically-controlled anti-slip braking system for reducing wheel slip during rapid deceleration, the overrunable test vehicle comprising:
a chassis;
a first axle and a second axle, with each of the first axle and the second axle rotatably supported by the chassis;
at least one wheel connected to each of the first axle and the second axle;
at least one electric motor operatively coupled with at least one of the first axle and the second axle;
a hydraulic braking system partially supported by the chassis and partially coupled to at least one of the first axle and the second axle;
a rotational speed sensor connected to at least one of the first axle and the second axle for determining a rotational speed of the connected axle;
a ground speed sensor supported by the chassis for determining a ground speed of the chassis; and
a controller operatively connected with the at least one electric motor, the hydraulic braking system, the rotational speed sensor, and the ground speed sensor, the controller configured to:
calculate a difference between the rotational speed of the at least one of the first axle and the second axle and the ground speed of the chassis to determine a slip threshold of the wheels;
actuate the hydraulic brake system to apply a first stopping force; and
control at least one motor parameter of the at least one electric motor to apply a second stopping force;
wherein the first and second stopping forces combined are less than the slip threshold of the wheels such that the chassis rapidly decelerates free of a wheel slip condition.