US5060159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and circuit configuration for controlling a two-channel anti-lock system
Assignee: Continental Teves AG and Co OHG
•
Filing: 1990-05-23
•
Granted: 1991-10-22
•
Expires: 2010-05-23
Abstract
Abstract To control the brake system of a two-channel anti-lock system, solely the rotational behavior of the front wheels (VR, VL) is measured and analyzed for generating a vehicle reference speed (V REF ) and braking-pressure control signals. The quantities determining the braking pressure in the wheel brakes and/or in the brake circuits (I, II) are measured, and a wheel pressure pattern (RDM) is formed from these which, by approximation, represents the pressure variation in the wheel brakes. The wheel-pressure-pattern signals are utilized for dimensioning the valve control signals and for determining the variation of the vehicle reference speed (V REF ).
Inventors
- 👤 Helmut Fennel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:46
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/17; B60T8/176; B60T8/1769
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
120 words
A method for controlling the brake system of a two-channel anti-lock system comprising the steps of: measuring and analyzing the wheel rotational behavior for generating a vehicle reference speed signal related thereto as well as braking-pressure control signals, measuring quantities determining the braking pressure in the wheel brakes from which measured quantities a wheel pressure pattern is derived that is by approximation representative of the pressure variation in the wheel brakes and, in conjunction with the wheel rotational behavior, is utilized for the purpose of wheel slip control and for determining the braking-pressure control signals, and ascertaining the vehicle reference speed (v REF ) from the rotational behavior of the front wheels (VL, VR) and the wheel pressure pattern (RDM).
Claim 2
Independent Claim
120 words
A method for controlling the brake system of a two-channel anti-lock system comprising the steps of: measuring and analyzing the wheel rotational behavior for generating a vehicle reference speed signal related thereto as well as braking-pressure control signals, measuring quantities determining the braking pressure in the wheel brakes from which measured quantities a wheel pressure pattern is derived that is by approximation representative of the pressure variation in the wheel brakes and, in conjunction with the wheel rotational behavior, is utilized for the purpose of wheel slip control and for determining the braking-pressure control signals, and ascertaining the vehicle reference speed (v REF ) from the rotational behavior of the front wheels (VL, VR) and the wheel pressure pattern (RDM).
Claim 3
Dependent Claim
106 words
A circuit configuration for controlling the brake system of a two-channel anti-lock system, comprising in combination: sensors for determining the wheel rotational behavior, circuits for generating a vehicle reference speed and braking pressure control signals and for forming a wheel pressure pattern and electric signals which, by approximation, represent the pressure variation in the wheel brakes and which are included in the signal processing for generating the braking-pressure control signals, and wherein the front wheel (VR, VL) are each equipped with one rotational speed sensor (1, 2) whose output signals are logically combined with the wheel-pressure-pattern signals for forming the vehicle reference speed (v REF ).
Claim 4
Dependent Claim
106 words
A circuit configuration for controlling the brake system of a two-channel anti-lock system, comprising in combination: sensors for determining the wheel rotational behavior, circuits for generating a vehicle reference speed and braking pressure control signals and for forming a wheel pressure pattern and electric signals which, by approximation, represent the pressure variation in the wheel brakes and which are included in the signal processing for generating the braking-pressure control signals, and wherein the front wheel (VR, VL) are each equipped with one rotational speed sensor (1, 2) whose output signals are logically combined with the wheel-pressure-pattern signals for forming the vehicle reference speed (v REF ).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-10-21 | 1995-04-22 | 1995-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-21 | 1999-04-22 | 1999-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-21 | 2003-04-22 | 2003-10-22 | $7700.00 | Window Closed / Lapsed |