US 10,328,802 B2Granted

Systems and methods for adaptive braking using brake wear data

AssigneeToyota Motor Engineering & Manufacturing North America, Inc.

InventorsGeoffrey David Gaither, Joshua D. Payne

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Abstract

System, methods, and other embodiments described herein relate to adapting a manner of braking according to brake wear of friction brakes of a vehicle. In one embodiment, a method includes identifying whether brake wear of at least one of the friction brakes satisfies a threshold for modifying a deceleration pattern of the vehicle. The deceleration pattern indicates how regenerative brakes and the friction brakes are engaged to decelerate the vehicle individually for each wheel of the vehicle. The method includes adjusting the deceleration pattern according to at least the brake wear of the at least one of the friction brakes to transition braking from the at least one of the friction brakes to the regenerative brakes. The method includes controlling the vehicle to decelerate according to the deceleration pattern upon receiving a control input.

Claims20

Dependent claims

An adaptive control system of a vehicle that includes both regenerative brakes and friction brakes, comprising:

one or more processors;
a memory communicably coupled to the one or more processors and storing:
a brake wear module including instructions that when executed by the one or more processors cause the one or more processors to identify whether brake wear of at least one of the friction brakes satisfies a threshold for modifying a deceleration pattern of the vehicle, wherein the deceleration pattern indicates how the regenerative brakes and the friction brakes are engaged to decelerate the vehicle individually for each wheel of the vehicle, and
wherein the deceleration pattern indicates at least an amount of simultaneous blending between using the friction brakes and using the regenerative brakes to decelerate the vehicle;
and
a deceleration module including instructions that when executed by the one or more processors cause the one or more processors to adjust, prior to receiving a control input to activate braking in the vehicle, the deceleration pattern according to at least the brake wear of the at least one of the friction brakes to transition braking from the at least one of the friction brakes to the regenerative brakes, and
wherein the deceleration module includes instructions to control the vehicle to decelerate according to the deceleration pattern upon receiving a control input.

4 more elements

A non-transitory computer-readable medium storing instructions that when executed by one or more processors cause the one or more processors to:

identify, for a vehicle that includes both friction brakes and regenerative brakes, whether brake wear of at least one of the friction brakes satisfies a threshold for modifying a deceleration pattern of the vehicle, wherein the deceleration pattern indicates how the regenerative brakes and the friction brakes are engaged to decelerate the vehicle individually for each wheel of the vehicle, and wherein the deceleration pattern indicates at least an amount of simultaneous blending between using the friction brakes and using the regenerative brakes to decelerate the vehicle;
adjust, prior to receiving a control input to activate braking in the vehicle, the deceleration pattern according to at least the brake wear of the at least one of the friction brakes to transition braking from the at least one of the friction brakes to the regenerative brakes;
and
control the vehicle to decelerate according to the deceleration pattern upon receiving a control input.

1 more element

A method of adapting braking in a vehicle that includes both regenerative brakes and friction brakes, comprising:

identifying whether brake wear of at least one of the friction brakes satisfies a threshold for modifying a deceleration pattern of the vehicle, wherein the deceleration pattern indicates how the regenerative brakes and the friction brakes are engaged to decelerate the vehicle individually for each wheel of the vehicle, and wherein the deceleration pattern indicates at least an amount of simultaneous blending between using the friction brakes and using the regenerative brakes to decelerate the vehicle;
adjusting, prior to receiving a control input to activate braking in the vehicle, the deceleration pattern according to at least the brake wear of the at least one of the friction brakes to transition braking from the at least one of the friction brakes to the regenerative brakes;
and
controlling the vehicle to decelerate according to the deceleration pattern upon receiving a control input.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 15/349,676Filed 11 Nov 2016
Published: US 2018/0134161 A117 May 2018
Granted: 25 Jun 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

B60L 7/26
With additional mechanical or electromagnetic braking: controlling the braking effect
B60L 3/0076
Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train: relating to braking
B60L 7/18
Dynamic electric regenerative braking: controlling the braking effect
B60T 8/172
Using electrical or electronic regulation means to control braking: determining control parameters used in the regulation, e.g. by calculations…