OBD compliant rationality check system for adaptive cruise control
First Claim
1. A system comprising:
- a vehicle speed module that determines a speed of a vehicle;
an engine control module that receives a first target speed signal and a torque request signal from an adaptive cruise control (ACC) module, wherein the ACC module is separate from the engine control module;
a first comparison module that compares the first target speed signal to the speed of the vehicle to generate a first assessment signal; and
a first target speed module that sets a second target speed signal equal to one of the first target speed signal and a predetermined value based on the first assessment signal,wherein the engine control module controls an engine to provide an engine output torque based on at least one of the torque request signal and the second target speed signal, andwherein the predetermined value indicates that a rationality check procedure of the first target speed signal has failed.
3 Assignments
0 Petitions
Accused Products
Abstract
A system includes a vehicle speed module that determines a speed of a vehicle. An engine control module receives a first target speed signal and a torque request signal from an adaptive cruise control (ACC) module. The ACC module is separate from the engine control module. A first comparison module compares the first target speed signal to the speed of the vehicle to generate a first assessment signal. A first target speed module sets a second target speed signal equal to one of the first target speed signal and a predetermined value based on the first assessment signal. The engine control module controls an engine to provide an engine output torque based on at least one of the torque request signal and the second target speed signal.
-
Citations
19 Claims
-
1. A system comprising:
-
a vehicle speed module that determines a speed of a vehicle; an engine control module that receives a first target speed signal and a torque request signal from an adaptive cruise control (ACC) module, wherein the ACC module is separate from the engine control module; a first comparison module that compares the first target speed signal to the speed of the vehicle to generate a first assessment signal; and a first target speed module that sets a second target speed signal equal to one of the first target speed signal and a predetermined value based on the first assessment signal, wherein the engine control module controls an engine to provide an engine output torque based on at least one of the torque request signal and the second target speed signal, and wherein the predetermined value indicates that a rationality check procedure of the first target speed signal has failed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A system comprising:
-
an active module that detects whether an adaptive cruise control (ACC) module is in an active mode; a delay module that generates a delay signal indicating whether the ACC module sets a first target speed signal within a predetermined period based on whether the ACC module is in the active mode; a first target speed module that receives the first target speed signal from the ACC module, detects a change in the first target speed signal, and determines a magnitude of the change in the first target speed signal; a comparison module that compares the magnitude to a predetermined range and generates an assessment signal based and the comparison; and a second target speed module that sets, based on the delay signal and the assessment signal, a second target speed signal (i) based on the first target speed signal, or (ii) equal to a predetermined value, wherein the predetermined value indicates that a rationality check procedure of the first target speed signal has failed. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
-
Specification