US3907378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for monitoring the action of an antilock controller
Assignee: Robert Bosch GmbH
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Filing: 1973-11-27
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Granted: 1975-09-23
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Expires: 1993-11-27
Abstract
Abstract A method for monitoring the action of an antilock controller comprises initiating a check procedure for the controller with at least one wheel disconnected therefrom, determining whether controlled braking or uncontrolled braking is most efficient and rendering at least part of the antilock controller non-operative for a predetermined period if normal braking is found to be most efficient. Also provided is a monitoring device which operates according to this method.
Inventors
- 👤 Heinz Leiber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:19
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/32; B60T8/88; B60T8/885; B60T2270/00; B60T2270/40; B60T2270/406
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
88 words
A method for monitoring the action of an antilock controller for control of the brake pressure at the wheels of a vehicle comprising initiating a check operation for said antilock controller, with at least one vehicle wheel braking system disconnected from said controller determining with the aid of said at least one vehicle wheel whether controlled braking or uncontrolled braking is most efficient, and rendering said antilock controller non-operative at least in part and for a predetermined time period if normal braking is found to be most efficient.
Claim 2
Independent Claim
88 words
A method for monitoring the action of an antilock controller for control of the brake pressure at the wheels of a vehicle comprising initiating a check operation for said antilock controller, with at least one vehicle wheel braking system disconnected from said controller determining with the aid of said at least one vehicle wheel whether controlled braking or uncontrolled braking is most efficient, and rendering said antilock controller non-operative at least in part and for a predetermined time period if normal braking is found to be most efficient.
Claim 3
Dependent Claim
70 words
A method as defined in claim 1, and comprising determining the movement behavior of the vehicle during a said checking operation alternately with said controller in operation and which at least partial switching off of said controller and determining from the values obtained from said movement behavior of said vehicle whether greater braking action occurs with the controller in operation or with at least partial switching off of said controller.
Claim 4
Dependent Claim
61 words
A method as defined in claim 2, and comprising determining the deceleration of said vehicle at sequentially following time points, at one time point with the controller in operation and at the other time point with at least a partially switched off controller, Comparing the two values thus obtained and using said comparison as a criterion for switching off said controller.
Claim 5
Dependent Claim
62 words
A method as defined in claim 2, and comprising determining the decrease in speed of said vehicle at sequentially following time periods, at one with operation of the controller and at the other with at least a partially switched off state of the controller, comparing the two values thus obtained and using said comparison as a criterion for switch off said controller.
Claim 6
Dependent Claim
59 words
A method as defined in claim 2, and comprising determining the distance travelled by said vehicle within two time periods, in one time period with operation of the controller and in the other with at least a partially switched off controller, comparing the two values thus obtained and using said comparison as a criterion for switching off said controller.
Claim 7
Dependent Claim
31 words
A method as defined in claim 1, and comprising preventing, at least for a predetermined time period, initiation of a further check operation if greater braking is found with controller operation.
Claim 8
Dependent Claim
30 words
A method as defined in claim 6, and comprising initiating a further checking operation during this time period if the deceleration of said vehicle has dropped to a predetermined value.
Claim 9
Dependent Claim
31 words
A method as defined in claim 7, and comprising initiating said further checking operation only if said deceleration of said vehicle drops to said predetermined value for a predetermined time period.
Claim 10
Dependent Claim
72 words
A method as defined in claim 1, and comprising measuring the acceleration behaviour of a wheel momentarily uncontrolled by said controller to produce a signal if the acceleration of said wheel has not reached a predetermined value indicating a high frictional coefficient of a surface on which said wheel is running and using this said signal for interruption of the control for a predetermined time period at one or more said wheels.
Claim 11
Dependent Claim
23 words
A method as defined in claim 9, wherein said signal is produced if said acceleration of said wheel has not reached 2 g.
Claim 12
Dependent Claim
23 words
A method as defined in claim 9, and comprising producing said signal only if a predetermined low acceleration of said wheel is exceeded.
Claim 13
Dependent Claim
15 words
A method as defined in claim 9, and comprising measuring the acceleration of said wheel.
Claim 14
Dependent Claim
20 words
A method as defined in claim 9, and comprising forming a jerk signal derived from acceleration with respect to time.
Claim 15
Dependent Claim
46 words
A method as defined in claim 1, and comprising measuring the frictional coefficient of a surface on which said vehicle is travelling to produce a signal if said frictional coefficient is less than 0.5 and initiating a check operation only on occurrence of this said signal.
Claim 16
Dependent Claim
26 words
A method as defined in claim 14, and comprising initiating said check operation only if the deceleration of said vehicle does not reach a predetermined value.
Claim 17
Dependent Claim
21 words
A method as defined in claim 14, and comprising initiating said check operation if a predetermined brake pressure is not exceeded.
Claim 18
Dependent Claim
32 words
A method as defined in claim 1, and comprising preventing a at least partial switching off of said controller if turning of a steering wheel of said vehicle exceeds a predetermined angle.
Claim 19
Dependent Claim
35 words
A method as defined in claim 1, and comprising preventing a at least partial switching off of said controller if turning of a steering wheel of said vehicle exceeds a predetermined rate of angular movement.
Claim 20
Dependent Claim
26 words
A method as defined in claim 1, and comprising initiating said check operation from time to time and checking the correct functioning of said check operation.
Claim 21
Dependent Claim
20 words
A method as defined in claim 19, and comprising initiating a said checking operation when the vehicle motor is started.
Claim 22
Dependent Claim
32 words
A method as defined in claim 19, and comprising detecting the appearance or non-appearance of signals at certain circuit points at certain times after initiation of said check operation for checking purposes.
Claim 23
Independent Claim
121 words
A device for montioring the action of an antilock controller for control of the brake pressure at the wheels of a vehicle comprising inItiating means for initiating a check operation for said antilock controller, disconnection means associated with said initiating means for disconnecting a braking system of at least one wheel of said vehicle from said antilock controller, determining means for determining with the aid of said at least one vehicle wheel whether braking control by said antilock controller or normal braking is most efficient, and switch off means for rendering said antilock controller non-operative at least in part and for a predetermined time period on receipt of a signal from said determining means indicating that normal braking is most efficient.
Claim 24
Independent Claim
121 words
A device for montioring the action of an antilock controller for control of the brake pressure at the wheels of a vehicle comprising inItiating means for initiating a check operation for said antilock controller, disconnection means associated with said initiating means for disconnecting a braking system of at least one wheel of said vehicle from said antilock controller, determining means for determining with the aid of said at least one vehicle wheel whether braking control by said antilock controller or normal braking is most efficient, and switch off means for rendering said antilock controller non-operative at least in part and for a predetermined time period on receipt of a signal from said determining means indicating that normal braking is most efficient.
Claim 25
Dependent Claim
60 words
A device as defined in claim 22, and comprising sensors for determining the movement behavior of said vehicle during said check operation alternately when said antilock controller is in operation and when it is at least partially switched off, and evaluating means for evaluating from values obtained from said sensors the relative efficiency of braking with control and without control.
Claim 26
Dependent Claim
103 words
A device as defined in claim 22, and comprising measuring means for measuring the acceleration of a wheel of said vehicle which is momentarily switched off from the antilock controller, signal producing means for producing a signal in response to the said measuring means if said acceleration of said wheel has not reached a predetermined value indicative of a high coefficient of friction of a surface on which said wheel is running and switch off means responsive to said signal from said signal producing means for making said antilock controller ineffective for a predetermined time period at one or more of said wheels.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |