CN217672812U - Power-assisted steering system and vehicle - Google Patents
Power-assisted steering system and vehicle Download PDFInfo
- Publication number
- CN217672812U CN217672812U CN202221511056.XU CN202221511056U CN217672812U CN 217672812 U CN217672812 U CN 217672812U CN 202221511056 U CN202221511056 U CN 202221511056U CN 217672812 U CN217672812 U CN 217672812U
- Authority
- CN
- China
- Prior art keywords
- power
- vehicle
- eps controller
- assisted
- steering system
- 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.)
- Active
Links
Images
Abstract
The application discloses power assisted steering system and vehicle, its characterized in that, power assisted steering system includes: a mechanical transmission mechanism; the data acquisition device is connected with the mechanical transmission mechanism and is used for acquiring running data of the vehicle in the running process; the EPS controller is connected with the data acquisition device, a power-assisted slow-rising and slow-falling module, a safety module and a power-assisted output module are arranged in the EPS controller, and the EPS controller is used for outputting a current value corresponding to power-assisted torque according to the driving data so as to realize switching of a power-assisted mode of a vehicle; and the power steering motor is connected with the EPS controller and used for receiving the current value and outputting a target power-assisted torque corresponding to the current value to the mechanical transmission mechanism so as to drive the mechanical transmission mechanism to operate. The application improves the safety of the vehicle in switching the steering modes.
Description
Technical Field
The application relates to the technical field of vehicle control, in particular to a power-assisted steering system and a vehicle.
Background
An Electric Power Steering (EPS) is an auxiliary Power Steering system that relies on an Electric motor to provide an auxiliary torque. Currently, electric power steering systems can be classified into a single power mode or a dual power mode, wherein the dual power mode can be matched with a corresponding power strategy according to the selection of a driver.
However, when the conventional power steering system is switched between modes, the problem of frustration in the hand feeling of a driver is easily caused by large torque difference output by the power steering system after the mode switching is performed, and the safety is low when the power steering system is switched between the modes.
The above is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission that the above is prior art.
SUMMERY OF THE UTILITY MODEL
The application mainly aims to provide a power-assisted steering system and a vehicle, and aims to solve the problem that safety is low when a power-assisted mode of the vehicle is switched.
To achieve the above object, the present application provides a power steering system including:
a mechanical transmission mechanism;
the data acquisition device is connected with the mechanical transmission mechanism and is used for acquiring running data of the vehicle in the running process;
the EPS controller is connected with the data acquisition device, a power-assisted slow-lifting module, a safety module and a power-assisted output module are arranged in the EPS controller, and the EPS controller is used for outputting a current value corresponding to power-assisted torque according to the driving data so as to realize switching of a power-assisted mode of a vehicle;
and the power steering motor is connected with the EPS controller and is used for receiving the current value and outputting a target power-assisted torque corresponding to the current value to the mechanical transmission mechanism so as to drive the mechanical transmission mechanism to operate.
Optionally, the data acquisition device includes a vehicle speed sensor and a steering angle sensor, wherein the vehicle speed sensor is used for acquiring a real-time vehicle speed of the vehicle in a driving process, and the steering angle sensor is used for acquiring a real-time steering angle of the vehicle in the driving process.
Optionally, the vehicle speed sensor and the steering angle sensor are respectively communicated with the EPS controller through a CAN network, and the real-time vehicle speed and the real-time steering angle are transmitted to the EPS controller.
Optionally, the safety module comprises a fault detection module and a protection module which are connected with each other, the fault detection module is used for detecting whether the EPS controller breaks down, and the protection module is used for protecting the EPS controller and the power-assisted steering motor.
Optionally, the protection module includes a temperature protection unit, an overvoltage protection unit, and an undervoltage protection unit;
the temperature protection unit is used for monitoring the real-time temperature of the EPS controller and cooling the EPS controller when the real-time temperature exceeds a threshold value;
the overvoltage protection unit is used for monitoring the real-time voltage of the EPS controller, and adopting power-assisted degradation or cutting off the power-assisted when the voltage exceeds a threshold value;
the undervoltage protection unit is used for monitoring the real-time voltage of the EPS controller, and when the voltage is lower than a threshold value, the assistance is degraded or cut off.
Optionally, the power-assisted slow-rising and slow-falling module is configured to set a power-assisted change step length when the power-assisted mode is switched, so that the power-assisted mode is switched smoothly.
Optionally, the power steering system further includes a control display device connected to the EPS controller, and the control display device is configured to receive a control instruction and send the control instruction to the EPS controller to switch a vehicle power assisting mode.
Optionally, the power steering system further includes a vehicle controller connected to the data acquisition device, the EPS controller, and the power steering motor, where the vehicle controller is configured to collect operation data of the data acquisition device, the EPS controller, and the power steering motor.
Optionally, the vehicle control unit is further connected with a cloud control platform for remotely controlling the operation of the vehicle.
In order to realize the aforesaid, the utility model also provides a vehicle, the vehicle includes as above-mentioned power assisted steering system.
The utility model discloses in provide a power assisted steering system, power assisted steering system includes: a mechanical transmission mechanism; the data acquisition device is connected with the mechanical transmission mechanism and is used for acquiring running data of the vehicle in the running process; the EPS controller is connected with the data acquisition device, a power-assisted slow-lifting module, a safety module and a power-assisted output module are arranged in the EPS controller, and the EPS controller is used for outputting power-assisted torque according to the driving data; and the power steering motor is connected with the EPS controller and used for outputting power-assisted torque to the mechanical transmission mechanism so as to drive the mechanical transmission mechanism to operate. Through the structure, the utility model discloses can realize the different helping hand moment of torsion output of vehicle through the EPS controller, and then realize that the vehicle is in the helping hand mode switching under the different situation, can reduce the vehicle and feed back to driver's pause and contort the sense when different helping hand modes switch through the helping hand slow-rising slow-falling module that sets up in the EPS controller for the helping hand mode switches more smoothly, improves driver's driving comfort.
Drawings
FIG. 1 is a schematic diagram of a frame structure of a power steering system in an embodiment of a multi-platform live broadcast system of the present application;
the reference numbers indicate:
the implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
It should be noted that all directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present application are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, descriptions in this application as to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
In an embodiment of the power steering system, referring to fig. 1, the power steering system includes: a mechanical transmission mechanism 01; the data acquisition device 02 is connected with the mechanical transmission mechanism 01; the EPS controller 03 is connected with the data acquisition device 02, and a power-assisted slow-rising and slow-falling module 031, a safety module 032 and a power-assisted output module 032 are arranged in the EPS controller 03; and the power steering motor 04 is connected with the EPS controller 03.
The application scene of the power-assisted steering system is that the vehicle turns to and runs, and the power-assisted steering system provides steering force for a driver so that the driver can easily complete control in the running process when turning. The mechanical transmission mechanism 01 comprises mechanical transmission devices such as a steering wheel, a steering column and a steering tie rod, and is used for realizing vehicle wheel steering in a manner of transmitting the torsional force applied to the steering wheel by a driver and realizing vehicle steering by transmitting the torque output by the power steering motor. The data acquisition device 02 is used for gathering the data of going of vehicle in the in-process of going, wherein, the data of going includes the real-time speed of a vehicle and the real-time angle of turning to of vehicle, the angle that central line formed when turning to extreme position and wheel do not deflect right or left for the vehicle wheel promptly, the contained angle when vehicle driving direction and vehicle straight line were gone promptly. The EPS controller 03 is configured to output a current value corresponding to the assist torque according to the driving data, so as to switch the vehicle assist mode. The power steering motor 04 is configured to receive the current value and output a target power steering torque corresponding to the current value to the mechanical transmission mechanism 01 to drive the mechanical transmission mechanism 01 to operate, and since the current value corresponding to the power steering torque is already obtained in the EPS controller 03, after the power steering motor 04 receives the current value corresponding to the power steering torque output by the EPS controller 03, the current value may be converted into the target power steering torque, so as to implement switching of the power steering mode.
The utility model discloses in provide a power assisted steering system, power assisted steering system includes: a mechanical transmission mechanism 01; the data acquisition device 02 is connected with the mechanical transmission mechanism 01 and is used for acquiring the driving data of the vehicle in the driving process; the EPS controller 03 is connected with the data acquisition device 02, a power-assisted slow-lifting module 031, a safety module 032 and a power-assisted output module 032 are arranged in the EPS controller 03, and the EPS controller 03 is used for outputting a power-assisted torque according to the driving data; and the power steering motor 04 is connected with the EPS controller 03 and used for outputting power-assisted torque to the mechanical transmission mechanism 01 so as to drive the mechanical transmission mechanism 01 to operate. Through the structure, the utility model discloses can realize the different helping hand torque output of vehicle through EPS controller 03, and then realize that the helping hand mode of vehicle under different situation switches, can reduce the vehicle and feed back to driver's pause and pause through the helping hand slow lifting module 031 that sets up in EPS controller 03 when different helping hand modes switch and feel for the helping hand mode switches more smoothly, improves driver's driving comfort.
Further, the data acquisition device 02 includes a vehicle speed sensor and a steering angle sensor.
Further, the vehicle speed sensor and the steering angle sensor are respectively communicated with the EPS controller 03 through a CAN network, and the real-time vehicle speed and the real-time steering angle are transmitted to the EPS controller 03.
In this embodiment, the vehicle speed sensor is used for acquiring the real-time vehicle speed during the driving process of the vehicle, the steering angle sensor is used for acquiring the real-time steering angle during the driving process of the vehicle, and after acquiring the real-time vehicle speed and the real-time steering angle of the vehicle, the real-time vehicle speed and the real-time steering angle are transmitted to the EPS controller 03 through the CAN network, so that the EPS controller 03 calculates the power-assisted torque according to the real-time vehicle speed and the real-time steering angle, and completes the switching of the power-assisted mode of the vehicle.
Further, the safety module 032 includes a fault detection module 0321 and a protection module 0322 connected to each other.
Further, the protection module 0322 includes a temperature protection unit, an overvoltage protection unit, and an undervoltage protection unit;
in this embodiment, the fault detection module 0321 is configured to detect whether the EPS controller 03 fails, so as to ensure that each software and hardware component of the current EPS system is normally working and has no fault code. The protection module 0322 is configured to protect the EPS controller 03, and specifically, the temperature protection unit is configured to monitor a real-time temperature of the EPS controller 03 and cool the EPS controller 03 when the real-time temperature exceeds a threshold; the threshold may be set according to actual needs, and is not limited in this embodiment. The overvoltage protection unit is used for monitoring the real-time voltage of the EPS controller 03, and when the voltage exceeds a threshold value, the assistance degradation or the assistance cutting is adopted, namely, the output voltage is reduced to realize the assistance degradation or the output voltage is switched to realize the assistance cutting; the threshold may be set according to actual needs, and is not limited in this embodiment. The undervoltage protection unit is configured to monitor a real-time voltage of the EPS controller 03, and when the voltage is lower than a threshold, degrade the assist or cut off the assist, that is, reduce the output voltage to degrade the assist or switch the output voltage to cut off the assist. The threshold may be set according to actual needs, and is not limited in this embodiment. Through above-mentioned structure, protect whole system component, pcb circuit components and parts not to be punctured by the heavy current, the life of extension system, power-assisted steering motor 04.
Further, the assist slow ascending and descending module 031 is configured to set an assist change step length when an assist mode is switched, so as to smooth the switching of the assist mode. In this embodiment, because the output currents of the current power-assisted mode and the power-assisted mode to be switched of the vehicle are different, a difference between the current power-assisted mode and the power-assisted mode needs to be obtained, and then the power-assisted change duration is set according to a preset change interval, wherein the preset change interval is the required change times in the process of changing the current output current to the target output current, and when the change times are more, the power-assisted mode is switched more stably; when the times of change are less, the power-assisted mode is more abrupt. The boosting force changing step length is a current value changed by each change. For example, if the output current in the current assist mode is 1A, and the output current in the assist mode to be switched is 2A, the difference between the two is 1A, and if the preset change interval is set to 10 times, the assist change duration is 0.1A. Wherein, the technical personnel in the field can set up different preset change intervals as required, the utility model discloses do not do the restriction here.
In addition, the EPS controller 03 is further provided with a calculation module, configured to calculate a difference between the assist torque of the current mode and the assist torque of the target mode when the assist modes are switched, and the assist torque of each mode is fixed, so that the difference only needs to be directly calculated according to a fixed assist torque value corresponding to each mode.
Further, the power steering system further comprises a control display device connected with the EPS controller 03, and the control display device is used for receiving a control command and sending the control command to the EPS controller 03 so as to switch a vehicle power-assisted mode.
In this embodiment, the display control device may be a central control display screen installed on the vehicle, and the central control display screen is connected to the EPS controller 03 through a CAN network and is used for receiving a switching control instruction triggered by a driver, and further controlling the power-assisted mode switching of the vehicle.
Further, the power-assisted steering system further comprises a vehicle control unit which is respectively connected with the data acquisition device 02, the EPS controller 03 and the power-assisted steering motor 04;
further, the vehicle control unit is further connected with a cloud control platform and used for remotely controlling the operation of the vehicle.
In this embodiment, the vehicle control unit is configured to collect operation data of the data acquisition device 02, the EPS controller 03, and the power steering motor 04, and send the operation data to the cloud control platform, so that a manager completes remote management of a vehicle according to the operation data.
In addition, the EPS controller 03 is further connected with a battery management system, the battery management system comprises a battery connected with the EPS controller 03 and a battery monitoring module connected with the battery, the battery supplies power to the EPS controller 03, and the battery monitoring module is used for detecting the health condition of the battery. Through the battery management system, the normal operation of the EPS controller 03 is realized.
The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications and equivalents of the technical solutions that can be directly or indirectly applied to other related technical fields within the spirit of the present application are included in the scope of the present application.
Claims (10)
1. A power steering system, characterized by comprising:
a mechanical transmission mechanism;
the data acquisition device is connected with the mechanical transmission mechanism and is used for acquiring running data of the vehicle in the running process;
the EPS controller is connected with the data acquisition device, a power-assisted slow-lifting module, a safety module and a power-assisted output module are arranged in the EPS controller, and the EPS controller is used for outputting a current value corresponding to power-assisted torque according to the driving data so as to realize switching of a power-assisted mode of a vehicle;
and the power steering motor is connected with the EPS controller and is used for receiving the current value and outputting a target power-assisted torque corresponding to the current value to the mechanical transmission mechanism so as to drive the mechanical transmission mechanism to operate.
2. The power steering system of claim 1, wherein the data acquisition device comprises a vehicle speed sensor for acquiring a real-time vehicle speed during driving of the vehicle and a steering angle sensor for acquiring a real-time steering angle during driving of the vehicle.
3. A power steering system according to claim 2, wherein the vehicle speed sensor and the steering angle sensor are in communication with the EPS controller via a CAN network, respectively, and the real-time vehicle speed and the real-time steering angle are transmitted to the EPS controller.
4. The power steering system of claim 1, wherein the safety module comprises a fault detection module and a protection module, wherein the fault detection module is connected with each other, the fault detection module is used for detecting whether an EPS controller is in fault, and the protection module is used for protecting the EPS controller and the power steering motor.
5. The power steering system according to claim 4, wherein the protection module comprises a temperature protection unit, an overvoltage protection unit and an undervoltage protection unit;
the temperature protection unit is used for monitoring the real-time temperature of the EPS controller and cooling the EPS controller when the real-time temperature exceeds a threshold value;
the overvoltage protection unit is used for monitoring the real-time voltage of the EPS controller, and adopting power-assisted degradation or cutting off the power-assisted when the voltage exceeds a threshold value;
the undervoltage protection unit is used for monitoring the real-time voltage of the EPS controller, and adopting the power assistance to degrade or cut off the power assistance when the voltage is lower than a threshold value.
6. The power steering system of claim 1, wherein the power assist ramp up and down module is configured to set a power assist change step size to smooth power assist mode switching when power assist mode switching is performed.
7. The power steering system of claim 1, further comprising a control display coupled to the EPS controller, the control display configured to receive control commands and send the control commands to the EPS controller to switch vehicle assist modes.
8. The power steering system of claim 1, further comprising a vehicle control unit connected to the data acquisition device, the EPS controller, and the power steering motor, respectively, the vehicle control unit being configured to collect operation data of the data acquisition device, the EPS controller, and the power steering motor.
9. A power assisted steering system according to claim 8, wherein the vehicle control unit is further connected to a cloud control platform for remote control of vehicle operation.
10. A vehicle characterized in that it comprises a power steering system according to claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221511056.XU CN217672812U (en) | 2022-06-16 | 2022-06-16 | Power-assisted steering system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221511056.XU CN217672812U (en) | 2022-06-16 | 2022-06-16 | Power-assisted steering system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217672812U true CN217672812U (en) | 2022-10-28 |
Family
ID=83709244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221511056.XU Active CN217672812U (en) | 2022-06-16 | 2022-06-16 | Power-assisted steering system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217672812U (en) |
-
2022
- 2022-06-16 CN CN202221511056.XU patent/CN217672812U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0919450B1 (en) | Motor driven power steering device | |
| JP3518944B2 (en) | Motor drive | |
| JP4333646B2 (en) | Electric power steering device | |
| US11124225B2 (en) | Steering apparatus and method for vehicle | |
| EP1738990B1 (en) | Voltage boosting circuit and electrically-driven power steering device | |
| CN111762260B (en) | Power-assisted steering system redundancy control system and method based on calibrated vehicle speed and vehicle | |
| EP2226236B1 (en) | Electrically driven power steering device | |
| EP2275322B1 (en) | Electric power steering system | |
| EP1690776A2 (en) | Steering control apparatus | |
| JPH0796388B2 (en) | Electric power steering device | |
| EP2759457A1 (en) | Vehicle steering system | |
| US20140229066A1 (en) | Electronic control device for electric power steering apparatus | |
| US11541930B2 (en) | Rotary electric machine control device | |
| US20230100164A1 (en) | Steering control device and method | |
| CN217672812U (en) | Power-assisted steering system and vehicle | |
| CN114735073B (en) | Device for avoiding fault of steering system of automatic driving vehicle and control method thereof | |
| CN209795594U (en) | Three-motor driving steering actuating mechanism of driverless automobile steer-by-wire system | |
| JP2001088727A (en) | Steering device for vehicle | |
| CN2652762Y (en) | Electric booster turning system | |
| JP4719901B2 (en) | Rear wheel steering angle control device | |
| EP2638556B1 (en) | Combination switch | |
| CN216468062U (en) | Electric control power-assisted steering control system and vehicle | |
| JP2004122942A (en) | Controller for vehicle | |
| CN211252756U (en) | Active steering auxiliary device for automobile steering wheel | |
| JP4243146B2 (en) | Battery state determination device in electric steering device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |