Method and device for speed regulation when travelling on an incline
First Claim
Patent Images
1. A method of controlling an actual speed of a motor vehicle in a travelling direction thereof during a hill descent, comprising the following steps:
- (a) determining an actual speed signal;
(b) determining an inclination signal that represents a rate of change of an inclination as a function of time of a motor vehicle in a travelling direction thereof during a hill descent;
(c) determining a setpoint speed signal;
(d) determining a difference signal from the actual speed signal and the setpoint speed signal;
(e) determining an actuating signal from the difference signal and the inclination signal;
(f) converting the actuating signal to at least one braking signal; and
(g) supplying the at least one braking signal to a brake system of the motor vehicle.
2 Assignments
0 Petitions
Accused Products
Abstract
A method and an apparatus for controlling the speed of a motor vehicle in particular during a hill ascent are described. In a PID controller acting upon the brake system of the motor vehicle the change of the vehicle inclination is fed into the I branch of the controller, thereby providing an adaptive speed control.
6 Citations
11 Claims
-
1. A method of controlling an actual speed of a motor vehicle in a travelling direction thereof during a hill descent, comprising the following steps:
-
(a) determining an actual speed signal; (b) determining an inclination signal that represents a rate of change of an inclination as a function of time of a motor vehicle in a travelling direction thereof during a hill descent; (c) determining a setpoint speed signal; (d) determining a difference signal from the actual speed signal and the setpoint speed signal; (e) determining an actuating signal from the difference signal and the inclination signal; (f) converting the actuating signal to at least one braking signal; and (g) supplying the at least one braking signal to a brake system of the motor vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. An apparatus for controlling an actual speed of a motor vehicle in a travelling direction thereof during a hill descent, comprising:
-
a device for determining an actual speed signal; a device for determining an inclination signal that represents a time rate of change of an inclination as a function of time of a motor vehicle in a travelling direction thereof during a hill descent; a device for determining a setpoint speed signal; a device for determining a difference signal from the actual speed signal and the setpoint speed signal; a device for determining an actuating signal from the difference signal, which device is coupled in such a way to the device for determining the inclination signal that the determination of the actuating signal from the difference signal may be influenced by the inclination signal; and a device for determining at least one braking signal from the actuating signal.
-
-
11. A system for braking a motor vehicle comprising a plurality of wheels, in particular during a hill descent, comprising:
-
a device for determining an actual speed signal; a device for determining an inclination signal that represents a rate of change of an inclination as a function of time of a motor vehicle in a travelling direction thereof during a hill descent; a device for determining a setpoint speed signal; a device for determining a difference signal from the actual speed signal and the setpoint speed signal; a device for determining an actuating signal from the difference signal, which device is coupled in such a way to the device for determining the inclination signal that the determination of the actuating signal from the difference signal may be influenced by the inclination signal; and a device for determining at least one braking signal from the actuating signal; and a brake system that can be coupled to the motor vehicle and acts upon at least one of the wheels thereof in response to said at least one braking signal.
-
Specification