Brake control system and method having variable braking modes

• US 9,193,343 B2
• Filed: 08/21/2013
• Issued: 11/24/2015
• Est. Priority Date: 11/13/2012
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: Jung, Young Suk, Choi, Jin Hwan
• Primary Examiner(s): Trammell, James
• Assistant Examiner(s): ALSOMIRI, MAJDI A
• Application Number:
  US13/972,554
• Publication Number:
  US 20140136069A1
• Time in Patent Office: 825 Days
• Field of Search: 701/70, 180/272, 180/273, 180/287, 303/20, 303/113.4, 303/155, 303/191
• US Class Current: 1/1
• CPC Class Codes: B60T 13/662 characterised by specified functions of the control system components
• CPC Class Codes: B60T 2220/02 Driver type; Driving style; Driver adaptive features
• CPC Class Codes: B60T 2220/06 Adjustment of accelerator pedal reaction forces
• CPC Class Codes: B60T 2270/82 Brake-by-Wire, EHB
• CPC Class Codes: B60T 2270/86 Optimizing braking by using ESP vehicle or tire model

Abstract

A brake control system and method having variable braking modes includes an operation part, a brake input detector, and a controller. The operation part is disposed to allow a driver to selectively input one of a plurality of predetermined braking characteristics modes. The brake input detector detects a brake pedal operation variance or a brake pedal manipulation force of the driver. The controller receives a mode selection signal from the operation part to recognize a braking characteristic mode selected by the driver, and then controls a wheel brake to generate a predetermined pattern of braking force in the braking characteristic mode selected by the driver based on the brake pedal operation variance and the brake pedal operation force detected by the brake input detector.

Claims

1. A brake control system having variable braking modes, comprising:

an operation part provided to allow a driver to selectively input one of a plurality of predetermined braking characteristics modes;

a brake input detector for detecting a brake pedal operation variance or a brake pedal manipulation force of the driver;

a controller receiving a mode selection signal from the operation part to recognize a braking characteristic mode selected by the driver, and then controlling a wheel brake to generate a predetermined pattern of braking force in the braking characteristic mode selected by the driver based on the brake pedal operation variance and a brake pedal operation force detected by the brake input detector; and

a pedal effort variable device adjusting a pedal stroke of a pedal simulator with respect to a driver'"'"'s pedal effort according to a control signal of the controller,

wherein the controller receives the mode selection signal from the operation part to recognize the selected braking characteristic mode and controls the pedal effort variable device to vary the pedal stroke of the pedal simulator with respect to the driver'"'"'s pedal effort according to the selected braking characteristic mode, such that different braking forces are generated according to the selected braking characteristic mode even when a same pedal effort is applied.

2. The brake control system of claim 1, wherein the controller is configured such that a driver request deceleration corresponding to the brake pedal operation variance and the brake pedal operation force varies with the braking characteristic mode.

3. The brake control system of claim 2, wherein the braking characteristic mode is provided in plurality in which a change rate of the driver request deceleration with the respect to the brake pedal operation variance or the brake pedal operation force varies or a magnitude of the driver request deceleration corresponding to the brake pedal operation variance or the brake pedal operation force is always set to vary.

4. The brake control system of claim 1, wherein the braking characteristic mode is provided in plurality in which a change rate of the pedal stroke of the pedal simulator with the respect to the driver'"'"'s pedal effort varies or a magnitude of the pedal stroke corresponding to the driver'"'"'s pedal effort is always set to vary.

5. The brake control system of claim 1, further comprising a mode display for displaying the braking characteristics mode selected by the driver.

6. A brake control method having variable braking modes, comprising:

selectively inputting, by a driver, one of a plurality of predetermined braking characteristic modes by operating an operation part;

receiving, by a controller, a mode selection signal from the operation part to recognize the braking characteristic mode selected by the driver; and

controlling a wheel brake to generate a predetermined pattern of braking force in the braking characteristic mode selected by the driver based on a brake pedal operation variance and a brake pedal operation force detected by a brake input detector,

wherein the controller receives the mode selection signal from the operation part to recognize the selected braking characteristic mode and controls a pedal effort variable device, which adjusts a pedal stroke of a pedal simulator with respect to a driver'"'"'s pedal effort according to a control signal of the controller, to vary the pedal stroke of the pedal simulator with respect to the driver'"'"'s pedal effort according to the selected braking characteristic mode, such that different braking forces are generated according to the selected braking characteristic mode even when a same pedal effort is applied.

7. The brake control method of claim 6, wherein the controller is configured such that a driver request deceleration corresponding to the brake pedal operation variance and the brake pedal operation force varies with the braking characteristic mode.

8. The brake control method of claim 7, wherein the braking characteristic mode is provided in plurality in which a change rate of the driver request deceleration with the respect to the brake pedal operation variance or the brake pedal operation force varies or a magnitude of the driver request deceleration corresponding to the brake pedal operation variance or the brake pedal operation force is always set to vary.

9. The brake control method of claim 6, wherein the braking characteristic mode is provided in plurality in which a change rate of the pedal stroke of the pedal simulator with the respect to the driver'"'"'s pedal effort varies or a magnitude of the pedal stroke corresponding to the driver'"'"'s pedal effort is always set to vary.