CN114560010A - IPB and EHPS or EPS safety redundancy control method - Google Patents
IPB and EHPS or EPS safety redundancy control method Download PDFInfo
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- CN114560010A CN114560010A CN202210307875.0A CN202210307875A CN114560010A CN 114560010 A CN114560010 A CN 114560010A CN 202210307875 A CN202210307875 A CN 202210307875A CN 114560010 A CN114560010 A CN 114560010A
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- ehps
- eps
- rbu
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000003745 diagnosis Methods 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 4
- 238000012544 monitoring process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/0481—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures
- B62D5/0487—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures detecting motor faults
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/0481—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures
- B62D5/0484—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures for reaction to failures, e.g. limp home
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/30—Safety devices, e.g. alternate emergency power supply or transmission means to ensure steering upon failure of the primary steering means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention relates to the technical field of vehicle control, in particular to a safety redundancy control method of an IPB (Internet protocol B) and an EHPS (electric power steering) or EPS (electric power steering), wherein the IPB is connected with a RBU (radial basis unit) motor through a CAN (controller area network), the EHPS motor or the EPS motor is connected with the RBU motor through the CAN, and the control process comprises the following steps: the IPB fault diagnosis module monitors the IPB motor in real time, and when the IPB motor is normal, the RBU motor is disconnected with the IPB motor; when the IPB motor fails, the RBU motor is connected with the IPB; the EHPS or EPS fault diagnosis module monitors an EHPS or EPS motor, and when the EHPS or EPS motor is normal, the RBU motor is disconnected with the transmission mechanism; when the EHPS or EPS fault diagnosis module monitors that the EHPS or EPS motor fails, the RBU motor replaces the EHPS or EPS motor to work and is communicated with the transmission mechanism. The method provided by the invention has the advantages of low cost, simple control method, small occupied space and stronger practicability.
Description
Technical Field
The invention relates to the technical field of vehicle control, in particular to a safety redundancy control method of an IPB (internet protocol bus) and an EHPS (Ethernet Passive Power System) or an EPS (electric Power storage system).
Background
The IPB is a key safety component of the chassis domain of the vehicle, and integrates the electronic booster and the ESP in one module.
EHPS is traditional mechanical hydraulic power, EPS is electric power steering system, if a RBU and IPB are provided for mutual redundancy backup, the RBU and IPB are connected in series to construct a redundancy safety braking system. The EHPS motor or the EPS motor is provided with a redundant backup motor, so that the cost is high, the space limit is large, and the safety redundancy of the EHPS motor or the EPS motor is difficult to realize.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an IPB and EHPS or EPS safety redundancy control method which has low cost, simple control method, small occupied space and stronger practicability.
The invention is realized by the following technical scheme:
the IPB and EHPS or EPS safety redundancy control method comprises the following control processes that EHPS is a motor-driven hydraulic pump power-assisted steering system, the IPB is connected with a RBU motor through a CAN, and the EHPS motor or EPS motor is connected with the RBU motor through a CAN:
the IPB fault diagnosis module monitors the working condition of the IPB motor in real time, and when the IPB motor works normally, the RBU motor is disconnected with the IPB;
when the IPB fault diagnosis module monitors that the IPB motor fails, the control system controls the RBU motor to be connected with the IPB as a redundant backup through the CAN to replace the IPB motor to work;
the EHPS fault diagnosis module or the EPS fault diagnosis module monitors the working condition of the EHPS motor or the EPS motor, and when the EHPS motor or the EPS motor works normally, the RBU motor is disconnected with the transmission mechanism;
when the EHPS fault diagnosis module or the EPS fault diagnosis module monitors that the EHPS motor or the EPS motor fails, the control system controls the RBU motor to serve as a redundant backup to replace the EHPS motor or the EPS motor to work and switch on the transmission mechanism through the CAN.
Further, when the IPB motor and the EHPS motor fail simultaneously, the RBU motor is preferentially connected with the IPB to replace the IPB motor to work.
Advantageous effects of the invention
The IPB and EHPS or EPS safety redundancy control method protected by the invention has the following advantages: the RBU motor is used as a backup motor of the IPB and also used as a backup motor of the EHPS or the EPS, so that the cost of the brake system is reduced, the safety performance of the brake system is also considered, and the control method is simple, small in occupied space and high in practicability.
And when the IPB motor and the EHPS motor or the EPS break down simultaneously, the function of the IPB system is preferentially ensured, so that the safety performance of the brake system is ensured.
Drawings
FIG. 1 is a schematic diagram of an IPB and EHPS security redundancy system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an IPB and EPS safety redundancy system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a second IPB and EHPS security redundancy system according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a second IPB and EPS safety redundancy system according to an embodiment of the present invention;
FIG. 5 is a block diagram of an IPB and EHPS safety redundancy control system;
FIG. 6 is a block diagram of an IPB and EPS safety redundancy control system;
in the figure, 1, IPB, 2, RBU motor, 3, EHPS motor, 4, pump, 5, transmission mechanism, 6, detachable structure, 7, electromagnetic valve and 8, EPS motor.
Detailed Description
The IPB and EHPS or EPS safety redundancy control method comprises the following control processes that EHPS is a motor-driven hydraulic pump power-assisted steering system, IPB1 is connected with an RBU motor 2 through CAN, and EHPS motor 3 or EPS motor 8 is connected with the RBU motor through CAN:
the IPB fault diagnosis module monitors the working condition of the IPB motor in real time, and when the IPB motor works normally, the RBU motor is disconnected with the IPB;
when the IPB fault diagnosis module monitors that the IPB motor fails, the control system controls the RBU motor to be connected with the IPB as a redundant backup through the CAN bus to replace the IPB motor to work;
the IPB fault diagnosis module comprises multiple monitoring modes such as IPB motor rotating speed monitoring and temperature monitoring, the rotating speed, the temperature and the like of the IPB motor CAN be monitored in real time through various corresponding sensors, information is transmitted to the IPB control system, the IPB control system receives monitoring information and compares the monitoring information with preset information, when the monitored information exceeds a corresponding preset range, the IPB motor fault is judged, the IPB control system disconnects the IPB motor and transmits the fault information to the RBU control system through a CAN communication line, the RBU control system connects the RBU motor with the IPB to replace the IPB motor to work, and the safety redundancy of the IPB is achieved.
The EHPS fault diagnosis module or the EPS fault diagnosis module monitors the working condition of the EHPS motor 3 or the EPS motor 8, and when the EHPS motor or the EPS motor works normally, the RBU motor is disconnected with the transmission mechanism 5;
when the EHPS fault diagnosis module or the EPS fault diagnosis module monitors that the EHPS motor or the EPS motor fails, the RBU motor is used as a redundant backup to replace the EHPS motor or the EPS motor to work and is communicated with the transmission mechanism to realize the power assisting and steering of the vehicle;
the EHPS fault diagnosis module or the EPS fault diagnosis module comprises an EHPS motor or an EPS motor, a temperature monitoring and other multiple monitors, the rotating speed, the temperature and the like of the EHPS motor or the EPS motor can be monitored in real time through various corresponding sensors, information is transmitted to an EHPS control system or an EPS control system, the EHPS control system or the EPS control system receives monitoring information and compares the monitoring information with preset information, when the monitored information exceeds a corresponding preset range, the EHPS motor or the EPS motor is judged to be in fault, the EHPS control system or the EPS control system controls the EHPS motor or the EPS motor to stop working and transmits the information to an RBU control system, and the RBU control system connects the RBU motor with a transmission mechanism to replace the EHPS motor or the EPS motor to work, so that the safety redundancy of the EHPS motor or the EPS motor is realized.
As a specific embodiment, the EHPS motor or the EPS motor and the RBU motor are in series connection with the transmission mechanism, the EHPS motor or the EPS motor and the RBU motor can share one pump 4, and the EHPS motor or the EPS motor and the RBU motor can be connected through a detachable structure. The specific detachable structure 6 can adopt an electromagnetic clutch, can realize the conversion between an EHPS motor or an EPS motor and an RBU motor, has simple structure and low cost, can perform the actuation action of the electromagnetic clutch under the condition of high-speed rotation, and is suitable for dry oil-free occasions.
As a second specific embodiment, the EHPS motor or the EPS motor and the RBU motor are connected in parallel and then communicated with the transmission mechanism, when the EHPS system is applied, the EHPS motor and the RBU motor can respectively drive different pumps and hydraulic pipelines to be communicated with the transmission mechanism, and the hydraulic pipeline of the RBU motor can be provided with the electromagnetic valve 7, so that connection conversion between the EHPS motor and the RBU motor is realized; when the novel electric power steering device is applied to an EPS system, a detachable structure can be arranged between the RBU motor and the transmission mechanism, the detachable structure can be an electromagnetic clutch, and connection conversion between the EPS motor and the RBU motor is realized.
Further, when the IPB motor and the EHPS motor or the EPS motor fail simultaneously, the RBU motor is preferentially connected with the IPB to replace the IPB motor to work. When the IPB motor and the EHPS motor or the EPS motor report faults, the RBU motor is preferentially used as a safety redundant standby motor of the IPB, and the normal work of a vehicle braking system can be preferentially ensured, so that the safety performance of the braking system is ensured, and the driving safety of the vehicle is improved.
According to the IPB and EHPS or EPS safety redundancy control method, the RBU motor is used as the backup motor of the IPB and the backup motor of the EHPS or EPS, so that the cost of the brake system is reduced, the safety performance of the brake system is considered, the control method is simple, the occupied space is small, and the practicability is high. And when the RBU motor is used as a backup motor, the IPB has priority, and the function of the IPB system is preferentially ensured, so that the safety performance of a brake system is ensured, the safe driving of the vehicle is realized, and the RBU motor can be applied to future unmanned vehicles and is safer and more reliable.
Note: the IPB in the application document denotes an integrated brake system; EPS denotes an electric power steering system; EHPS denotes an electronically controlled hydraulic power steering system; RBU denotes a redundant brake unit.
In conclusion, the IPB and EHPS or EPS safety redundancy control method protected by the invention has the advantages of low cost, simple control method, small occupied space and stronger practicability.
Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
- The safety redundancy control method for the IPB and the EHPS or the EPS is characterized in that the EHPS is a power-assisted steering system of a hydraulic pump driven by a motor, the IPB is connected with a RBU motor through a CAN, and the EHPS motor or the EPS motor is connected with the RBU motor through the CAN, and specifically comprises the following control processes:the IPB fault diagnosis module monitors the working condition of the IPB motor in real time, and when the IPB motor works normally, the RBU motor is disconnected with the IPB;when the IPB fault diagnosis module monitors that the IPB motor fails, the control system controls the RBU motor to be connected with the IPB as a redundant backup through the CAN to replace the IPB motor to work;the EHPS fault diagnosis module or the EPS fault diagnosis module monitors the working condition of the EHPS motor or the EPS motor, and when the EHPS motor or the EPS motor works normally, the RBU motor is disconnected with the transmission mechanism;when the EHPS fault diagnosis module or the EPS fault diagnosis module monitors that the EHPS motor or the EPS motor fails, the control system controls the RBU motor to be used as a redundant backup to replace the EHPS motor or the EPS motor to work and switch on the transmission mechanism through the CAN.
- 2. The IPB and EHPS or EPS security redundancy control method according to claim 1, wherein when the IPB motor fails simultaneously with the EHPS motor or EPS motor, the RBU motor is preferentially connected to the IPB to operate instead of the IPB motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210307875.0A CN114560010A (en) | 2022-03-25 | 2022-03-25 | IPB and EHPS or EPS safety redundancy control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210307875.0A CN114560010A (en) | 2022-03-25 | 2022-03-25 | IPB and EHPS or EPS safety redundancy control method |
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| Publication Number | Publication Date |
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| CN114560010A true CN114560010A (en) | 2022-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210307875.0A Pending CN114560010A (en) | 2022-03-25 | 2022-03-25 | IPB and EHPS or EPS safety redundancy control method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120283907A1 (en) * | 2011-05-05 | 2012-11-08 | GM Global Technology Operations LLC | Lane centering fail-safe control using differential braking |
| US20200139985A1 (en) * | 2018-11-02 | 2020-05-07 | Danfoss Power Solutions, Inc. | Vehicle steering control systems and methods |
| CN112721894A (en) * | 2021-01-21 | 2021-04-30 | 江苏大学 | Three-motor integrated high-reliability intelligent linear control system and control method thereof |
| CN113682303A (en) * | 2021-09-27 | 2021-11-23 | 岚图汽车科技有限公司 | Method and system for steering vehicle |
| CN113911204A (en) * | 2021-10-22 | 2022-01-11 | 岚图汽车科技有限公司 | Method and system for failure backup of steering system |
| CN113997780A (en) * | 2021-12-09 | 2022-02-01 | 吉林大学 | Drive-by-wire chassis based on self-redundancy integrated wheel module and control method thereof |
| CN114179605A (en) * | 2021-12-29 | 2022-03-15 | 吉林大学 | Motor redundancy multifunctional integrated wheel module and control method thereof |
-
2022
- 2022-03-25 CN CN202210307875.0A patent/CN114560010A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120283907A1 (en) * | 2011-05-05 | 2012-11-08 | GM Global Technology Operations LLC | Lane centering fail-safe control using differential braking |
| US20200139985A1 (en) * | 2018-11-02 | 2020-05-07 | Danfoss Power Solutions, Inc. | Vehicle steering control systems and methods |
| CN112721894A (en) * | 2021-01-21 | 2021-04-30 | 江苏大学 | Three-motor integrated high-reliability intelligent linear control system and control method thereof |
| CN113682303A (en) * | 2021-09-27 | 2021-11-23 | 岚图汽车科技有限公司 | Method and system for steering vehicle |
| CN113911204A (en) * | 2021-10-22 | 2022-01-11 | 岚图汽车科技有限公司 | Method and system for failure backup of steering system |
| CN113997780A (en) * | 2021-12-09 | 2022-02-01 | 吉林大学 | Drive-by-wire chassis based on self-redundancy integrated wheel module and control method thereof |
| CN114179605A (en) * | 2021-12-29 | 2022-03-15 | 吉林大学 | Motor redundancy multifunctional integrated wheel module and control method thereof |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20240129 Address after: No. 126, Suhong West Road, Suzhou Industrial Park, Jiangsu Province 215021 Applicant after: BOSCH AUTOMOTIVE PRODUCTS (SUZHOU) Co.,Ltd. Country or region after: China Address before: 215000 Room 301, 3rd floor, Xiangrong building, No. 55, nantiancheng Road, high speed rail new town, Xiangcheng District, Suzhou City, Jiangsu Province Applicant before: Suzhou haizhibo Electronic Technology Co.,Ltd. Country or region before: China |
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Application publication date: 20220531 |