CA2493666A1 - Failsafe actuator - Google Patents
Failsafe actuator Download PDFInfo
- Publication number
- CA2493666A1 CA2493666A1 CA002493666A CA2493666A CA2493666A1 CA 2493666 A1 CA2493666 A1 CA 2493666A1 CA 002493666 A CA002493666 A CA 002493666A CA 2493666 A CA2493666 A CA 2493666A CA 2493666 A1 CA2493666 A1 CA 2493666A1
- Authority
- CA
- Canada
- Prior art keywords
- plunger
- actuator
- failsafe
- stored energy
- drive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/0152—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the action on a particular type of suspension unit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/018—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the use of a specific signal treatment or control method
- B60G17/0185—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the use of a specific signal treatment or control method for failure detection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
- B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
- B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
- B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
- B60G21/055—Stabiliser bars
- B60G21/0551—Mounting means therefor
- B60G21/0553—Mounting means therefor adjustable
- B60G21/0555—Mounting means therefor adjustable including an actuator inducing vehicle roll
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
- B60G2600/02—Retarders, delaying means, dead zones, threshold values, cut-off frequency, timer interruption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
- B60G2600/08—Failure or malfunction detecting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
- B60G2600/82—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems duty rate function
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
- Lock And Its Accessories (AREA)
Abstract
A failsafe actuator is provided for returning an actuator driven element to a failsafe position in case of a failure condition. The actuator (102) include s a drive assembly (303) for driving a plunger (318) from a first plunger position to a second plunger position. The actuator additionally includes a stored energy element (509) for driving the plunger from the second plunger position to the first plunger position on the occurrence of the failure condition, wherein the actuator driven element is responsive to the plunger such that the actuator drive element is driven to the failsafe position when the plunger is driven to the first position.
Claims (43)
1. A failsafe actuator for returning an actuator driven element to a failsafe position in se of a failure condition, said actuator comprising:
a drive assembly configured to drive said actuator driven element, said drive assembly mprising a plunger having at least a first plunger position, said actuator driven element sponsive to said plunger such that said actuator driven element is in said failsafe position when id plunger is in said first plunger position; and a stored energy element configured to drive said plunger to said first plunger position, and nce drive said actuator driven element to said failsafe position, upon detection of said failure ndition.
a drive assembly configured to drive said actuator driven element, said drive assembly mprising a plunger having at least a first plunger position, said actuator driven element sponsive to said plunger such that said actuator driven element is in said failsafe position when id plunger is in said first plunger position; and a stored energy element configured to drive said plunger to said first plunger position, and nce drive said actuator driven element to said failsafe position, upon detection of said failure ndition.
2. The failsafe actuator of claim 1, wherein said stored energy element comprises at ast one of a torsion spring and a clock spring, wherein said spring is in a preloaded condition nen said plunger is not in said first plunger position.
3. The failsafe actuator of claim 1, wherein said drive assembly further comprises an ectric motor and a gear train.
4. The failsafe actuator of claim 3, wherein said stored energy element is disposed tween said electric motor and said gear train.
5. The failsafe actuator of claim 1, wherein said failure condition is a loss of ectrical power to said drive assembly.
6. The failsafe actuator of claim 1 further comprising an electromechanical echanism configured to maintain said plunger in said second plunger condition, said ectromechanical mechanism configured to release said plunger upon detection of a failure ndition.
7. The failsafe actuator of claim 1, wherein said driven element is a stabilizer bar and d failsafe position provides activation of said stabilizer bar.
8. A failsafe actuator for returning an actuator driven element to a failsafe position in se of a failure condition, said failsafe actuator comprising:
a drive assembly configured to drive a plunger from a first plunger position to a second inger position; and a stored energy element configured to drive said plunger from said second plunger sition to said first plunger position upon said failure condition, said actuator driven element sponsive to said plunger such that said actuator driven element is in said failsafe position when d plunger is in said first plunger position.
a drive assembly configured to drive a plunger from a first plunger position to a second inger position; and a stored energy element configured to drive said plunger from said second plunger sition to said first plunger position upon said failure condition, said actuator driven element sponsive to said plunger such that said actuator driven element is in said failsafe position when d plunger is in said first plunger position.
9. The failsafe actuator of claim 8, wherein said stored energy element comprises at ist one of a torsion spring and a clock spring coupled to said drive assembly, wherein said ~red energy element is in a preloaded condition when said plunger is in said second plunger sition.
10. The failsafe actuator of claim 8 further comprising an electromechanical echanism configured to maintain said stored energy element in a preloaded condition when said mger is in said second plunger position, and is further configured to release said stored energy ement upon said failure condition.
11. The failsafe actuator of claim 10, wherein said electromechanical mechanism is nfigured to lock a shaft of said stored energy element against rotation when said plunger is in d second plunger position.
12. The failsafe actuator of claim 10, wherein said electromechanical mechanism is nfigured to hold said plunger in at least said second plunger position against said stored energy ement and further configured to release said plunger upon said failure condition.
13. The failsafe actuator of claim 8 wherein said failure condition occurs when power said actuator is interrupted.
14. The failsafe actuator of claim 8, wherein said plunger comprises a lost motion ment configured to allow said drive assembly to complete a drive cycle when said plunger is ~cked against movement.
15. The failsafe actuator of claim 8, wherein said drive assembly comprises an electric ~tor and a gear train configured for driving said plunger.
16. The failsafe actuator of claim 15 wherein said gear train comprises a planetary ar train.
17. The failsafe actuator of claim 8, further comprising a direct indication sensor nfigured to sense the position of said driven element independently of said plunger.
18. The failsafe actuator of claim 17 wherein said sensor comprises a non-contact ~sor.
19. The failsafe actuator of claim 17, wherein said direct indication sensor comprises robe extending from an actuator housing, said probe configured to follow movement of said ven element.
20. The failsafe actuator of claim 18, wherein said direct indication sensor comprises ~all effect sensor.
21. The failsafe actuator of claim 8, further comprising a sensor configured to indicate elative position of said plunger.
22. The failsafe actuator of claim 21, wherein said sensor measures rotational ovement of said drive assembly.
23. The failsafe actuator of claim 22 wherein said sensor is a non-contact sensor.
24. The failsafe actuator of claim 23, wherein said sensor is a Hall effect sensor sociated with a rotating element of said drive assembly.
25. The failsafe actuator of claim 22, wherein said sensor is further configured to ferentiate clockwise and counterclockwise rotational movement.
26. The failsafe actuator of claim 21, wherein said actuator further comprises a ching mechanism configured to maintain said plunger in said second position, and wherein d latch is configured to be actuated in response to said indicated relative position of said nger.
27. A method for returning an element to a failsafe position in case of a failure ndition, said method comprising the steps of:
driving a plunger from a first plunger position to a second plunger position, thereby loading a stored energy element;
holding said plunger in at least said second plunger position;
detecting said failure condition;
releasing said plunger from said at least second plunger position upon detection of said lure condition; and driving said plunger from said at least second plunger position to said first plunger sition, said element responsive to a position of said plunger such that said element is in said safe position when said plunger is in said first plunger position.
driving a plunger from a first plunger position to a second plunger position, thereby loading a stored energy element;
holding said plunger in at least said second plunger position;
detecting said failure condition;
releasing said plunger from said at least second plunger position upon detection of said lure condition; and driving said plunger from said at least second plunger position to said first plunger sition, said element responsive to a position of said plunger such that said element is in said safe position when said plunger is in said first plunger position.
28. The method according to claim 27, wherein said plunger is driven from said at ~st second plunger position to said first plunger position by said stored energy element.
29. The method according to claim 27, wherein said stored energy element comprises least one of a torsion spring and a clock spring.
30. The method according to claim 27, wherein said failure condition is an erruption of power to said actuator.
31. A method for returning a driven element to a failsafe position in case of a failure ndition, said method comprising:
preloading a stored energy element;
detecting said failure condition; and driving said element to said failsafe position in response to said failure condition by loading said stored energy element.
preloading a stored energy element;
detecting said failure condition; and driving said element to said failsafe position in response to said failure condition by loading said stored energy element.
32. The method according to claim 31, wherein preloading said stored energy element mprises compressing one of a torsion spring and a clock spring.
33. A stabilizer bar system comprising:
at least one stabilizer bar;
a power source;
an actuator receiving electrical power from said power source, said actuator comprising: a ve assembly configured to drive said at least one stabilizer bar, said drive assembly mprising a plunger having at least a first plunger position, said at least one stabilizer bar ponsive to said plunger such that said at least one stabilizer bar is in a failsafe position when d plunger is in said first plunger position; and a stored energy element configured to drive said plunger to said first plunger position, and ~ce said at least one stabilizer bar to said failsafe position, upon detection of a failure ndition.
at least one stabilizer bar;
a power source;
an actuator receiving electrical power from said power source, said actuator comprising: a ve assembly configured to drive said at least one stabilizer bar, said drive assembly mprising a plunger having at least a first plunger position, said at least one stabilizer bar ponsive to said plunger such that said at least one stabilizer bar is in a failsafe position when d plunger is in said first plunger position; and a stored energy element configured to drive said plunger to said first plunger position, and ~ce said at least one stabilizer bar to said failsafe position, upon detection of a failure ndition.
34. The system of claim 33, wherein said stored energy element comprises at least e of a torsion spring and a clock spring.
35. The system of claim 33, wherein said drive assembly further comprises an ectrically driven motor driving said plunger via a gear train.
36. The system of claim 35, wherein said stored energy element is disposed between id motor and said gear train, and wherein driving said plunger to said at least first plunger sition preloads said stored energy element.
37. A failsafe actuator for returning an actuator driven element to a failsafe position in se of a failure condition, said failsafe actuator comprising:
a drive assembly comprising an electric motor for driving a plunger via a gear train, and a ~red energy element configured to drive said plunger from at least a second plunger position to ~irst plunger position upon said failure condition, said actuator driven element responsive to id plunger such that said actuator driven element is in said failsafe position when said plunger in said first plunger position;
a lost motion element associated with said plunger configured to allow said plunger to ove between said first position and said at least second position when said driven element is ocked from moving;
a direct indication sensor configured to sense the position of said driven element dependently of said plunger; and a sensor configured to sense the relative position of said plunger.
a drive assembly comprising an electric motor for driving a plunger via a gear train, and a ~red energy element configured to drive said plunger from at least a second plunger position to ~irst plunger position upon said failure condition, said actuator driven element responsive to id plunger such that said actuator driven element is in said failsafe position when said plunger in said first plunger position;
a lost motion element associated with said plunger configured to allow said plunger to ove between said first position and said at least second position when said driven element is ocked from moving;
a direct indication sensor configured to sense the position of said driven element dependently of said plunger; and a sensor configured to sense the relative position of said plunger.
38. The failsafe actuator according to claim 37, wherein driving said plunger from id first plunger position to said at least second plunger position preloads said stored energy ement.
39. The failsafe actuator according to claim 38, wherein said stored energy element mprises at least one of a torsion spring and a clock spring.
40. A method for controlling an actuator comprising:
measuring a time required to drive said actuator a predetermined initial portion of an ~uator cycle at a predetermined driving power;
adjusting said driving power for a remainder of said actuator cycle in response to said easured time.
measuring a time required to drive said actuator a predetermined initial portion of an ~uator cycle at a predetermined driving power;
adjusting said driving power for a remainder of said actuator cycle in response to said easured time.
41. The method according to claim 40, further comprising generating a first error mal if a first predetermined time is exceeded to drive said actuator said predetermined initial rtion of said actuator cycle.
42. The method according to claim 40, further comprising generating a second error dal if said measured time is less than a second predetermined time.
43. The method according to claim 40, further comprising comparing an expected ~psed time required to drive said actuator a subsequent portion of said actuator cycle relative to id measured time.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US39830902P | 2002-07-24 | 2002-07-24 | |
| US60/398,309 | 2002-07-24 | ||
| PCT/US2003/022937 WO2004010555A2 (en) | 2002-07-24 | 2003-07-23 | Failsafe smart bar actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2493666A1 true CA2493666A1 (en) | 2004-01-29 |
| CA2493666C CA2493666C (en) | 2011-11-22 |
Family
ID=30771211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2493666A Expired - Fee Related CA2493666C (en) | 2002-07-24 | 2003-07-23 | Failsafe actuator |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1540789A2 (en) |
| AU (1) | AU2003259209A1 (en) |
| CA (1) | CA2493666C (en) |
| WO (1) | WO2004010555A2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4303140B2 (en) * | 2004-02-12 | 2009-07-29 | アイシン精機株式会社 | Stabilizer control device |
| JP4336217B2 (en) | 2004-02-12 | 2009-09-30 | アイシン精機株式会社 | Stabilizer control device |
| DE102005021673A1 (en) | 2005-05-11 | 2006-11-16 | Bayerische Motoren Werke Ag | Divided electromechanical motor vehicle stabilizer with blocking device and method for roll stabilization in case of failure or shutdown of the active motor vehicle stabilizer |
| FR2935640A1 (en) * | 2008-09-05 | 2010-03-12 | Renault Sas | Active/semi-active anti-roll actuator control device supervising system for motor vehicle, has supervision unit setting control device in operating mode compatible with availability of information, energy source and energy control source |
| DE102009034849A1 (en) * | 2009-07-27 | 2011-02-03 | Magna Powertrain Ag & Co Kg | roll stabilizer |
| DE102019213267B4 (en) * | 2019-09-03 | 2023-04-06 | Zf Friedrichshafen Ag | Method for detecting a blockage of an adjustable roll stabilizer |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5505480A (en) * | 1995-03-03 | 1996-04-09 | Ford Motor Company | Controlled stabilizer bar attachment apparatus for improved suspension articulation |
| GB9626045D0 (en) * | 1996-12-14 | 1997-01-29 | Rover Group | A vehicle roll stabilising system |
| DE19943960A1 (en) * | 1999-09-14 | 2001-03-15 | Bosch Gmbh Robert | Operating control element in vehicle involves initiating first fault reaction mode immediately after detecting implausibility, second fault reaction mode if implausibility continues |
| US6428019B1 (en) * | 2000-09-18 | 2002-08-06 | American Axle & Manufacturing, Inc. | Semi-active anti-roll system |
| EP1236592B1 (en) * | 2001-03-03 | 2013-11-06 | American Axle & Manufacturing, Inc. | Apparatus and method for coupling a disconnectable stabilizer bar system |
-
2003
- 2003-07-23 WO PCT/US2003/022937 patent/WO2004010555A2/en not_active Application Discontinuation
- 2003-07-23 AU AU2003259209A patent/AU2003259209A1/en not_active Abandoned
- 2003-07-23 CA CA2493666A patent/CA2493666C/en not_active Expired - Fee Related
- 2003-07-23 EP EP03765939A patent/EP1540789A2/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO2004010555A3 (en) | 2004-08-26 |
| EP1540789A2 (en) | 2005-06-15 |
| AU2003259209A8 (en) | 2004-02-09 |
| WO2004010555A9 (en) | 2007-03-15 |
| WO2004010555A2 (en) | 2004-01-29 |
| CA2493666C (en) | 2011-11-22 |
| AU2003259209A1 (en) | 2004-02-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20200831 |