US 11,878,692 B2
System and method for regenerative braking torque scheduling
Martin T. Books, Columbus, IN (US); and Joseph E. Paquette, Columbus, IN (US)
Assigned to CUMMINS INC., Columbus, IN (US)
Filed by Cummins Inc., Columbus, IN (US)
Filed on Feb. 2, 2023, as Appl. No. 18/105,009.
Application 18/105,009 is a continuation of application No. 15/734,134, granted, now 11,597,386, previously published as PCT/US2019/044332, filed on Jul. 31, 2019.
Claims priority of provisional application 62/713,142, filed on Aug. 1, 2018.
Prior Publication US 2023/0182739 A1, Jun. 15, 2023
Int. Cl. B60W 30/18 (2012.01); B60L 7/18 (2006.01); B60T 1/06 (2006.01); B60W 10/08 (2006.01); B60W 10/196 (2012.01); B60L 50/60 (2019.01); B60L 50/40 (2019.01); B60K 6/20 (2007.10); B60L 7/26 (2006.01)
CPC B60W 30/18127 (2013.01) [B60L 7/18 (2013.01); B60T 1/062 (2013.01); B60W 10/08 (2013.01); B60W 10/196 (2013.01); B60K 6/20 (2013.01); B60L 7/26 (2013.01); B60L 50/40 (2019.02); B60L 50/60 (2019.02); B60L 2240/421 (2013.01); B60L 2240/423 (2013.01); B60L 2250/28 (2013.01); B60T 2270/604 (2013.01); B60W 2510/081 (2013.01); B60W 2540/10 (2013.01); B60W 2710/08 (2013.01); B60W 2710/083 (2013.01); B60Y 2200/92 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for scheduling regenerative braking torque, comprising:
a pedal sensor configured to output a position signal indicating a position of an accelerator pedal;
a torque request device coupled to the pedal sensor and operable to generate a torque request value in response to the position signal;
a speed sensor configured to output a speed signal indicating a speed of operation of a motor/generator; and
a controller coupled to the speed sensor and the torque request device, the controller being configured to determine a torque limit in response to the torque request value and the speed signal, generate a regenerative braking command in response to the torque limit, and output the regenerative braking command to the motor/generator,
wherein the system is configured to:
modify the torque limit in response to a state of a brake pedal, and
modulate the regenerative braking torque in response to modifying the torque limit, and
wherein the system is further configured to increase the torque limit in response to the state being a released state.