CN112937314A - Method and device for improving torque smoothness in regeneration mode - Google Patents
Method and device for improving torque smoothness in regeneration mode Download PDFInfo
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- CN112937314A CN112937314A CN202110239008.3A CN202110239008A CN112937314A CN 112937314 A CN112937314 A CN 112937314A CN 202110239008 A CN202110239008 A CN 202110239008A CN 112937314 A CN112937314 A CN 112937314A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2009—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for braking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/10—Vehicle control parameters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/421—Speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2260/00—Operating Modes
- B60L2260/40—Control modes
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Hybrid Electric Vehicles (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The embodiment of the application discloses a method and a device for improving torque smoothness in a regeneration mode, which optimize the smoothness control on the air path torque and improve the torque output. The application includes: acquiring required vehicle parameter information of a driver, wherein the required vehicle parameter information comprises required motor rotating speed, required oil quantity, required gear and required accelerator opening; confirming a corresponding filter coefficient according to the required vehicle parameter information; filtering the collected current accelerator opening according to the filter coefficient to obtain the filtered accelerator opening; and calculating the output torque required by the driver according to the filtered accelerator opening and the collected current motor rotating speed.
Description
Technical Field
The embodiment of the application relates to the technical field of vehicle braking, in particular to a method and a device for improving torque smoothness in a regeneration mode.
Background
In the bosch control strategy, there are two torque control paths, the first being the fuel path torque and the other being the air path torque. The throttle valve and the EGR valve can quickly respond to the driving requirement of a driver by controlling the throttle closing degree and the EGR valve opening degree based on the air path torque, but under a relatively steady-state working condition, if the throttle control of the driver is trembled, the air torque fluctuation is large.
For example, in the regeneration mode, in order to raise the exhaust temperature, a large throttle closing degree is usually used at a small load, and if the air torque fluctuation is large, the throttle closing degree fluctuation is significant, and the intake air amount fluctuation is caused, so that the combustion stability is affected, and finally, the output torque is not smooth, and the driving experience of a driver is poor.
Disclosure of Invention
The embodiment of the application provides a method and a device for improving torque smoothness in a regeneration mode, so that smoothness control over air path torque is optimized, and torque output is improved.
A first aspect of an embodiment of the present application provides a method for improving torque smoothness in a regenerative mode, including:
acquiring required vehicle parameter information of a driver, wherein the required vehicle parameter information comprises required motor rotating speed, required oil quantity, required gear and required accelerator opening;
confirming a corresponding filter coefficient according to the required vehicle parameter information;
filtering the collected current accelerator opening according to the filter coefficient to obtain the filtered accelerator opening;
and calculating the output torque required by the driver according to the filtered accelerator opening and the collected current motor rotating speed.
Optionally, before the determining the corresponding filter coefficient according to the required vehicle parameter information, the method further includes:
and creating a filter coefficient data table, wherein different filter coefficients corresponding to different motor rotating speeds, oil quantities, gears and accelerator opening degrees are calibrated in the filter coefficient data table.
Optionally, the calculating the output torque required by the driver according to the filtered accelerator opening and the collected current motor speed includes:
drawing an MAP curve graph according to the filtered accelerator opening and the current motor rotating speed;
and obtaining the required output torque according to the MAP graph.
Optionally, before the filtering the acquired current accelerator opening according to the filter coefficient to obtain the filtered accelerator opening, the method further includes:
and acquiring the current accelerator opening and the current motor rotating speed of the vehicle.
Optionally, after calculating the output torque moment required by the driver according to the filtered accelerator opening and the collected current motor speed, the method further includes:
the output torque is sent to an Electronic Control Unit (ECU) so that the ECU converts the output torque into a required throttle opening.
A second aspect of the embodiments of the present application provides an apparatus for improving torque smoothness in a regenerative mode, including:
the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring required vehicle parameter information of a driver, and the required vehicle parameter information comprises a required motor rotating speed, a required oil quantity, a required gear and a required accelerator opening;
the confirming unit is used for confirming the corresponding filter coefficient according to the required vehicle parameter information;
the filtering unit is used for filtering the collected current accelerator opening according to the filtering coefficient to obtain the filtered accelerator opening;
and the calculating unit is used for calculating the output torque required by the driver according to the filtered accelerator opening and the acquired current motor rotating speed.
Optionally, before the confirming unit, the apparatus further includes:
the device comprises a creating unit used for creating a filter coefficient data table, wherein different filter coefficients corresponding to different motor rotating speeds, oil quantities, gears and accelerator opening degrees are calibrated in the filter coefficient data table.
Optionally, the computing unit includes:
the drawing module is used for drawing an MAP curve graph according to the filtered accelerator opening and the current motor rotating speed;
an obtaining module obtains a requested output torque from the MAP plot.
Optionally, before the filtering unit, the apparatus further includes:
and the acquisition unit is used for acquiring the current accelerator opening and the current motor rotating speed of the vehicle.
Optionally, after the computing unit, the apparatus further includes:
and the sending unit is used for sending the output torque to an ECU (electronic control Unit) so that the ECU converts the output torque into the required throttle opening.
A third aspect of the embodiments of the present application provides an apparatus for improving torque smoothness in a regenerative mode, including:
the device comprises a processor, a memory, an input and output unit and a bus;
the processor is connected with the memory, the input and output unit and the bus;
the processor performs the following operations:
acquiring required vehicle parameter information of a driver, wherein the required vehicle parameter information comprises required motor rotating speed, required oil quantity, required gear and required accelerator opening;
confirming a corresponding filter coefficient according to the required vehicle parameter information;
filtering the collected current accelerator opening according to the filter coefficient to obtain the filtered accelerator opening;
and calculating the output torque required by the driver according to the filtered accelerator opening and the collected current motor rotating speed.
An embodiment of the present application provides a computer-readable storage medium, where a program is stored, and when the program is executed on a computer, the method for improving torque smoothness in a regeneration mode according to any one of the above first aspects is executed.
According to the technical scheme, the embodiment of the application has the following advantages:
in the application, a method for improving the smoothness of the output torque in the regeneration mode is designed, the accelerator filter coefficient variable which can be calibrated is increased, the accelerator opening is filtered before the output torque is calculated, the smoothness control of the air path torque is optimized, the torque output is improved, and the problem that the combustion stability is influenced due to the fact that the air input is fluctuated because the air throttle closing degree is large in fluctuation is avoided.
Drawings
FIG. 1 is a flow chart illustrating an embodiment of a method for improving torque smoothness in a regeneration mode according to the present disclosure;
FIG. 2 is a flow chart illustrating a method for improving torque smoothness in a regeneration mode according to another embodiment of the present disclosure;
FIG. 3 is a flow chart illustrating an embodiment of an apparatus for improving torque smoothness in a regeneration mode according to the present disclosure;
FIG. 4 is a flow chart illustrating an embodiment of an apparatus for improving torque smoothness in a regeneration mode according to the present disclosure;
FIG. 5 is a flow chart illustrating an apparatus for improving torque smoothness in a regeneration mode according to another embodiment of the present disclosure.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below 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 embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection of the present application.
The embodiment of the application provides a method and a device for improving torque smoothness in a regeneration mode, so that smoothness control over air path torque is optimized, and torque output is improved.
Referring to fig. 1, an embodiment of a method for improving torque smoothness in a regenerative mode according to the present invention includes:
101. acquiring required vehicle parameter information of a driver, wherein the required vehicle parameter information comprises required motor rotating speed, required oil quantity, required gear and required accelerator opening;
in the embodiment of the present application, the boost torque smoothness is a torque control path based on air path torque control, and the torque control is mainly used for the throttle closing degree, the EGR valve opening degree, and the like. When the air path torque control is in a transient state, the path torque response is rapid, and the throttle valve and the EGR valve can rapidly respond to the driving requirement of a driver, however, under a relatively steady-state working condition, if the throttle control of the driver is trembled, the air torque fluctuation is large.
For example, in the regeneration mode, in order to raise the exhaust temperature, a large throttle closing degree is generally used at a small load, and if the air torque fluctuation is large, the throttle closing degree fluctuation is significant, causing the intake air amount fluctuation, which affects the combustion stability, and finally causing the output torque irregularity.
In order to improve the smoothness of the torque, a calibratable accelerator filter coefficient variable is added in the embodiment of the application, namely, the air path torque is derived from the accelerator opening after filtering, in order to filter the accelerator opening, vehicle parameter information required by a driver, namely, required motor rotating speed, required oil quantity, required gear and required accelerator opening, is required to be acquired, and a filter coefficient meeting the requirement of the driver is determined according to the parameter coefficients.
102. Confirming a corresponding filter coefficient according to the required vehicle parameter information;
it should be noted that, in the embodiment of the present application, driving behavior data of a driver is collected by a sensor mounted on a vehicle and sent to an ECU, so that the ECU processes and analyzes the driving behavior data to obtain a motor rotation speed value, an oil amount value, a gear position value, and an accelerator opening value required by the driver, and determines corresponding filter parameters by a table lookup method according to the parameter values.
103. Filtering the collected current accelerator opening according to the filter coefficient to obtain the filtered accelerator opening;
it should be noted that, in the embodiment of the present application, the filtering parameter is determined, in order to obtain the filtered accelerator opening, the current accelerator opening of the driver needs to be acquired by the sensor, the sensor sends the acquired current accelerator opening to the ECU for processing and conversion, and the filtering parameter filters the current accelerator opening value by the coordinate function established in advance, so as to obtain the filtered accelerator opening.
104. And calculating the output torque required by the driver according to the filtered accelerator opening and the collected current motor rotating speed.
In the embodiment of the present application, a functional relationship regarding the motor rotation speed, the accelerator opening, and the torque is established in advance, and the accelerator opening and the motor rotation speed obtained in steps 101 to 103 are substituted into the functional relationship to output the output torque required by the driver.
In the embodiment of the application, a method for improving the smoothness of the output torque in the regeneration mode is designed, the opening of the accelerator is filtered firstly before the output torque is calculated by increasing a calibratable accelerator filter coefficient variable, so that the smoothness control on the air path torque is optimized, the torque output is improved, and the problem that the combustion stability is influenced due to the fact that the air input is fluctuated because the closing degree of the throttle is large in fluctuation is solved.
While the method for improving torque smoothness in the regenerative mode is generally described above, the method for improving torque smoothness in the regenerative mode will be described in detail below.
Referring to fig. 2, another embodiment of the method for improving torque smoothness in the regenerative mode of the present application includes:
201. acquiring required vehicle parameter information of a driver, wherein the required vehicle parameter information comprises required motor rotating speed, required oil quantity, required gear and required accelerator opening;
in the embodiment of the present application, step 201 is similar to step 101 described above, and is not described herein again.
202. Creating a filter coefficient data table, wherein different filter coefficients corresponding to different motor rotating speeds, oil quantities, gears and accelerator opening degrees are calibrated in the filter coefficient data table;
in the embodiment of the application, different coefficients can be calibrated according to the filter parameters such as the rotating speed, the oil quantity, the gear and the accelerator opening, so that multiple groups of motor rotating speeds, oil quantities, gears and accelerator openings with different data need to be collected and stored in advance, and a filter coefficient data table is established. Different motor rotation speeds, oil quantities, gears and accelerator opening degrees correspond to different filtering parameters, for example, different accelerator opening degrees and motor rotation speeds correspond to different filtering parameters under the same gear and oil quantity.
In the same gear, the accelerator opening is in a direct proportion to the rotating speed, the larger the accelerator opening, the larger the oil inlet amount, the stronger the explosive force, the faster the engine rotating speed, and the larger the torque when the vehicle accelerates, the faster the vehicle accelerates.
203. Confirming a corresponding filter coefficient according to the required vehicle parameter information;
in the embodiment of the present application, step 203 is similar to step 102, and is not described herein again.
204. Acquiring the current accelerator opening and the current motor rotating speed of a vehicle;
it should be noted that, in the embodiment of the present application, after the required filter constant is obtained, the unfiltered accelerator opening degree needs to be filtered by using the filter constant, so that the current unfiltered accelerator opening degree of the vehicle and the current motor rotation speed need to be acquired by using a sensor, where the current motor rotation speed is used for calculating an output torque, that is, a required torque, with the filtered accelerator opening degree.
205. Filtering the collected current accelerator opening according to the filter coefficient to obtain the filtered accelerator opening;
in the embodiment of the present application, step 205 is similar to step 103 described above, and is not described herein again.
206. Drawing an MAP curve graph according to the filtered accelerator opening and the current motor rotating speed;
in the embodiment of the present application, after the current motor rotation speed and the filtered accelerator opening are obtained, a data table of an engine (motor rotation speed, accelerator opening, and torque) is created, and according to the data table, a MAP graph is drawn by using Matlab, where X represents the rotation speed, Y represents the accelerator opening, and Z represents the torque.
207. Obtaining a required output torque according to the MAP graph;
in the embodiment of the present application, the obtained current motor speed and the obtained filtered accelerator opening degree are substituted into the MAP graph to obtain the required output torque.
208. Sending the output torque to an ECU so that the ECU converts the output torque into a required throttle opening.
The ECU receives various information from the sensors, processes and analyzes the information, and then sends control signals to various actuators. In the embodiment of the application, the required output torque is calculated and then sent to the ECU, and the ECU can convert the required output torque into the required throttle opening, so that the aim of matching work of the engine is fulfilled.
In the embodiment of the application, a filter coefficient data table is established, an accelerator filter coefficient variable can be calibrated according to the table, the output torque is calculated after the accelerator opening is filtered according to the filter coefficient, the control of the air path torque is optimized, and even if a large throttle closing degree is used at a small load position in a regeneration mode, the throttle closing degree cannot fluctuate obviously due to large fluctuation of the air torque, so that the air inflow fluctuates, the combustion stability is influenced, and the torque smoothness is improved by the method.
The method for improving torque smoothness in the regenerative mode is described above, and the device for improving torque smoothness in the regenerative mode will be described below.
Referring to fig. 3, an embodiment of the apparatus for improving torque smoothness in the regenerative mode according to the present invention includes:
the acquiring unit 301 is configured to acquire required vehicle parameter information of a driver, where the required vehicle parameter information includes a required motor rotation speed, a required oil amount, a required gear, and a required accelerator opening;
a confirming unit 302, configured to confirm a corresponding filter coefficient according to the required vehicle parameter information;
the filtering unit 303 is configured to filter the acquired current accelerator opening according to the filter coefficient to obtain a filtered accelerator opening;
and the calculating unit 304 is configured to calculate the output torque required by the driver according to the filtered accelerator opening and the collected current motor speed.
In the embodiment of the application, a method for improving the smoothness of the output torque in the regeneration mode is designed, the accelerator filter coefficient variable which can be calibrated is increased, before the output torque is calculated through the calculation unit 304, the filter unit 303 is used for filtering the accelerator opening, the smoothness control of the air path torque is optimized, the torque output is improved, and the problem that the air input fluctuation is caused due to the fact that the throttle closing degree fluctuation is large is solved, so that the combustion stability is influenced.
The functions of the units of the device for improving torque smoothness in the regenerative mode are described in general terms, and the functions of the units of the device for improving torque smoothness in the regenerative mode are described in detail below.
Referring to fig. 4, in the embodiment of the present application, another embodiment of the apparatus for improving torque smoothness in the regeneration mode includes:
the acquiring unit 401 is configured to acquire required vehicle parameter information of a driver, where the required vehicle parameter information includes a required motor rotation speed, a required oil amount, a required gear, and a required accelerator opening;
the creating unit 402 is configured to create a filter coefficient data table, where different filter coefficients corresponding to different motor rotation speeds, oil amounts, gears, and accelerator opening degrees are calibrated in the filter coefficient data table;
a confirming unit 403, configured to confirm a corresponding filter coefficient according to the required vehicle parameter information;
the acquisition unit 404 is used for acquiring the current accelerator opening and the current motor speed of the vehicle;
the filtering unit 405 is configured to filter the acquired current accelerator opening according to the filter coefficient to obtain a filtered accelerator opening;
the calculating unit 406 is configured to calculate an output torque required by the driver according to the filtered accelerator opening and the acquired current motor speed;
further, the calculating unit 406 may further include:
a drawing module 4061, configured to draw an MAP graph according to the filtered accelerator opening and the current motor speed;
an obtaining module 4062 for obtaining a requested output torque from the MAP plot;
a sending unit 407, configured to send the output torque to an ECU, so that the ECU converts the output torque into a required throttle opening.
In the embodiment of the present application, the functions of each unit module correspond to the steps in the embodiments shown in fig. 1 to fig. 2, and are not described herein again.
Referring to fig. 5, another embodiment of the apparatus for improving torque smoothness in the regenerative mode according to the present invention includes:
a processor 501, a memory 502, an input-output unit 503, and a bus 504;
the processor 501 is connected with the memory 502, the input/output unit 503 and the bus 504;
the processor 501 performs the following operations:
acquiring required vehicle parameter information of a driver, wherein the required vehicle parameter information comprises required motor rotating speed, required oil quantity, required gear and required accelerator opening;
confirming a corresponding filter coefficient according to the required vehicle parameter information;
filtering the collected current accelerator opening according to the filter coefficient to obtain the filtered accelerator opening;
and calculating the output torque required by the driver according to the filtered accelerator opening and the collected current motor rotating speed.
In this embodiment, the functions of the processor 501 correspond to the steps in the embodiments shown in fig. 1 to fig. 2, and are not described herein again.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and the like.
Claims (10)
1. A method for improving torque smoothness in a regenerative mode, comprising:
acquiring required vehicle parameter information of a driver, wherein the required vehicle parameter information comprises required motor rotating speed, required oil quantity, required gear and required accelerator opening;
confirming a corresponding filter coefficient according to the required vehicle parameter information;
filtering the collected current accelerator opening according to the filter coefficient to obtain the filtered accelerator opening;
and calculating the output torque required by the driver according to the filtered accelerator opening and the collected current motor rotating speed.
2. The method of claim 1, wherein prior to said identifying corresponding filter coefficients from said demanded vehicle parameter information, said method further comprises:
and creating a filter coefficient data table, wherein different filter coefficients corresponding to different motor rotating speeds, oil quantities, gears and accelerator opening degrees are calibrated in the filter coefficient data table.
3. The method of claim 1, wherein calculating the driver demanded output torque based on the filtered throttle opening and the collected current motor speed comprises:
drawing an MAP curve graph according to the filtered accelerator opening and the current motor rotating speed;
and obtaining the required output torque according to the MAP graph.
4. The method of claim 1, wherein prior to filtering the collected current throttle opening according to the filter coefficient to obtain a filtered throttle opening, the method further comprises:
and acquiring the current accelerator opening and the current motor rotating speed of the vehicle.
5. The method of any one of claims 1-4, further comprising, after said calculating the driver demanded output torque from the filtered throttle opening and the collected current motor speed:
the output torque is sent to an Electronic Control Unit (ECU) so that the ECU converts the output torque into a required throttle opening.
6. An apparatus for improving torque smoothness in a regenerative mode, comprising:
the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring required vehicle parameter information of a driver, and the required vehicle parameter information comprises a required motor rotating speed, a required oil quantity, a required gear and a required accelerator opening;
the confirming unit is used for confirming the corresponding filter coefficient according to the required vehicle parameter information;
the filtering unit is used for filtering the collected current accelerator opening according to the filtering coefficient to obtain the filtered accelerator opening;
and the calculating unit is used for calculating the output torque required by the driver according to the filtered accelerator opening and the acquired current motor rotating speed.
7. The apparatus of claim 6, wherein before the confirmation unit, the apparatus further comprises:
the device comprises a creating unit used for creating a filter coefficient data table, wherein different filter coefficients corresponding to different motor rotating speeds, oil quantities, gears and accelerator opening degrees are calibrated in the filter coefficient data table.
8. The apparatus of claim 6, wherein the computing unit comprises:
the drawing module is used for drawing an MAP curve graph according to the filtered accelerator opening and the current motor rotating speed;
an obtaining module obtains a requested output torque from the MAP plot.
9. The apparatus of claim 6, wherein before the filtering unit, the apparatus further comprises:
and the acquisition unit is used for acquiring the current accelerator opening and the current motor rotating speed of the vehicle.
10. The apparatus according to any one of claims 6 to 9, characterized in that after the calculation unit, the apparatus further comprises:
and the sending unit is used for sending the output torque to an ECU (electronic control Unit) so that the ECU converts the output torque into the required throttle opening.
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