STABLIZATION METHOD FOR VEHICLES

• US 20140046539A1
• Filed: 08/06/2013
• Published: 02/13/2014
• Est. Priority Date: 08/07/2012
• Status: Active Grant

• Current Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Original Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Inventors: WIJFFELS, LODEWIJK, ZEGELAAR, PETER, NEHLS, OLIVER, CODONESU, SERGIO
• Granted Patent: US 9,183,179 B2
• Time in Patent Office: Days
• US Class Current: 701/36
• CPC Class Codes: B60G 17/0164 mainly during accelerating or braking
• CPC Class Codes: B60G 17/0195 characterised by the regulation being combined with other vehicle control systems conjoint control of vehicle sub-units including control of suspension systems B60W10/22
• CPC Class Codes: B60G 2400/39 Brake pedal position
• CPC Class Codes: B60G 2600/07 Inhibiting means
• CPC Class Codes: B60G 2800/22 Braking, stopping
• CPC Class Codes: B60G 2800/94 Electronic Stability Program (ESP, i.e. ABS+ASC+EMS)
• CPC Class Codes: B60T 2260/06 Active Suspension System
• CPC Class Codes: B60T 2270/402 Back-up
• CPC Class Codes: B60T 8/1755 Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve road vehicle drive control systems for control of driving stability otherwise than by controlling a particular sub-unit B60W30/02
• CPC Class Codes: B60T 8/885 using electrical circuitry
• CPC Class Codes: G06F 17/00 Digital computing or data processing equipment or methods, specially adapted for specific functions information retrieval, database structures or file system structures therefor G06F16/00

Abstract

Stabilization method and system for performing dynamic chassis control in a vehicle. An electronic stability control (ESC) includes an ESC sensor set; at least one chassis actuator; and a dynamic controller operably connected to at the least one chassis actuator. The ESC sensor set generates one or more sensor fault signals. Then, the method employs a dynamic controller to evaluate the signals corresponding to the sensor fault at least after a first fast fault signal, or a second slow fault signal. If the first fast fault signal is detected, the dynamic controller generates a signal for at least one of partially or completely temporarily switching off the at least one chassis actuator, while maintaining ESC in an active state. Conversely, if the second slow fault signal is detected, the dynamic controller generates a signal for temporarily switching off the ESC.

Claims

1. A stabilization method for performing dynamic chassis control in a vehicle, the method comprising:

providing an electronic stability control (ESC) having an ESC sensor set;

at least one chassis actuator; and

a dynamic controller operably connected to at the least one chassis actuator, wherein the ESC sensor set generates one or more sensor fault signals;

evaluating the signals that correspond to the sensor fault at least after a first fast fault signal, or a second slow fault signal, wherein;

if the first fast fault signal is detected, the dynamic controller generates a signal for at least one of partially or completely temporarily switching off the at least one chassis actuator, while maintaining ESC in an active state; and

if the second slow fault signal is detected, the dynamic controller generates a signal for temporarily switching off the ESC.

2. The method of claim 1, wherein the first fast fault signal implies a signal detection in a range of 250 to 350 μ

s.

3. The method of claim 1, wherein the second slow fault signal implies a signal detection in a range of 350 to 500 μ

s.

4. A stabilization system to perform a dynamic control in a vehicle, the system comprising:

at least one chassis actuator mounted and operably connected to the vehicle'"'"'s chassis;

an electronic stability control (ESC) having an ESC sensor set, the ESC sensor set configured to generate one or more signals by detecting an ESC sensor fault;

a dynamic controller operably connected to the ESC, wherein the dynamic controller evaluates the signals that correspond to the sensor fault at least after a first fast fault signal, or a second slow fault signal, wherein;

if the first fast fault signal is detected, the dynamic controller generates a signal for at least one of partially or completely temporarily switching off the at least one chassis actuator, while maintaining ESC in an active state; and

if the second slow fault signal is detected, the dynamic controller generates a signal for temporarily switching off the ESC.

5. The system of claim 4, wherein the first fast fault signal implies a signal detection in the range of 250 to 350 μ

s.

6. The system of claim 4, wherein the second slow fault signal implies a signal detection in range of 350 to 500 μ

s.