Limping control system of pure electric vehicle
A pure electric vehicle and control system technology, applied in the field of pure electric vehicle limp control system, can solve problems such as poor performance, and achieve the effect of avoiding vehicle safety accidents
Inactive Publication Date: 2017-12-26
合肥翔望智能科技有限公司
View PDF5 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
When the computer finds that a certain sensor data is abnormal, on the one hand, the fault light will alarm, and on the other hand, a constant will be used to replace the sensor data, but the performance is slightly worse
The limp mode currently provided by prior art requires additional hardware implementation
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0011] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0012] Such as figure 1 As shown, the present invention provides a pure electric vehicle limp control system, which is characterized in that it includes a dual accelerator pedal sensor 1, a filter acquisition circuit 2, a vehicle controller 3, a motor controller 5, a current sensor 4, and a motor 6;
[0013] The output of the two-way accelerator pedal sensor is connected to the vehicle controller 3 through the filter acquisition circuit 2, and the A / D conversion mo...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a limping control system of a pure electric vehicle. The limping control system comprises a dual-accelerator pedal sensor, a filtering acquiring circuit, a vehicle control unit, a motor controller, a current sensor and a motor. The method for using the limping control system comprises the following steps of when a first accelerator is damaged, setting a request torque T_ref as T_peda / 2, and executing a limping mode; if the current sensor is damaged, existing from the limping mode, and setting the request torque T_ref as T_peda, and if the current sensor is not damaged, continuing executing the limping mode; when the second accelerator is damaged, performing working according to the condition when the first accelerator is damaged; setting peda_diff = ABS (peda1-peda2); if the peda_diff is greater than max_diff, setting the T_ref as T_peda / 3, or else, existing from the limping mode; and if the peda_diff is greater than or equal to min_diff, executing the limping mode, if the current sensor is damaged, existing from the limping mode, if the current sensor is not damaged continuing executing the limping mode. According to the limping control system disclosed by the invention, when the pure electric vehicle is under the limping mode, a torque is preset by the vehicle control unit according to the request of the motor controller, so that safety accidents of the vehicle are avoided, and the vehicle can also limp to a nearby repair station for maintenance.
Description
technical field [0001] The invention relates to the technical field of pure electric vehicles, in particular to a limp control system for pure electric vehicles. Background technique [0002] The car limp mode means that when the electronic control unit in the car fails, the VCU automatically activates the backup control algorithm to simply control the motor, so that the car can be driven home or repaired at a nearby auto repair shop. Such a function is failure operation. Electric vehicles have various electronic sensors and actuators. If a sensor is damaged, the computer’s judgment will be wrong. Therefore, the designer designs a special program, which is the limp home mode. When the computer finds that a certain sensor data is abnormal, on the one hand, the fault light will alarm, and on the other hand, a constant will be used to replace the sensor data, but the performance is slightly worse. The limp mode currently provided by prior art requires additional hardware imple...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20
CPCB60L15/20B60L2240/423Y02T10/72
Inventor 张鸿恺李杨
Owner 合肥翔望智能科技有限公司