US 9,434,363 B2Granted

Deceleration control apparatus for motor vehicle

AssigneeDenso Corporation

InventorsJin Kurumisawa, Toyohito Nozawa, Tatsuya Namikiri

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Abstract

When a vehicle runs along a curved path, successive values of a speed limit are calculated based on the yaw rate of the vehicle, and values of acceleration demand are calculated and applied to control the actual vehicle speed based on the speed limit. If commencement of oscillation of the yaw rate and acceleration demand is detected, due to running along the curved path, guard processing is applied to the values of speed limit used to calculate the acceleration demand or is applied to the acceleration demand, such as to prevent the acceleration demand from varying in a direction that would increase the speed limit. Instability of deceleration control due to the oscillation is thereby substantially suppressed.

Claims17

Dependent claims

A deceleration control apparatus for installation on a vehicle, said deceleration control apparatus executing deceleration control based on running conditions of the vehicle including a turning state of the vehicle, said deceleration control apparatus comprising:

turning state acquisition circuitry configured for acquiring successive values of a turning state quantity indicative of said turning state, and
control value acquisition circuitry configured for deriving successive values of a control quantity for executing said deceleration control, the control quantity values being respectively derived based on said acquired values of the turning state quantity;
wherein said deceleration control apparatus comprises guard processing circuitry configured for executing guard processing during execution of said deceleration control, said guard processing comprising:
detecting a commencement of oscillation of said turning state quantity while said vehicle is running along a curved section of a route,
when said commencement of oscillation is detected, establishing a guard value of said turning state quantity as a value not exceeding a currently acquired value of said turning state quantity,
prior to detection of said oscillation commencement, executing said deceleration control based upon said successive values of said control quantity derived by said control value acquisition circuitry, and
subsequent to detection of said oscillation commencement, executing said deceleration control based upon a value of said control quantity derived from said guard value of the turning state quantity.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/062,031Filed 24 Oct 2013
Priority: JP 2012-23566325 Oct 2012
Published: US 2014/0121928 A11 May 2014
Granted: 6 Sep 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification3 codes

B60T 8/1755
Using electrical or electronic regulation means to control braking: brake regulation specially adapted to control the stability of the vehicle,…
B60T 2201/16
Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller: curve…
B60T
Vehicle brake control systems or parts thereof

Family

US 2014/0121928 A1Pre-grant publication · published 1 May 2014
US 9,434,363 B2This patent

From the US filing history. Foreign family members aren’t listed.

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