CN109687810A - A kind of pure electric vehicle logistic car prevents the method for controlling number of revolution of Motor Over Speed - Google Patents
A kind of pure electric vehicle logistic car prevents the method for controlling number of revolution of Motor Over Speed Download PDFInfo
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- CN109687810A CN109687810A CN201811556642.4A CN201811556642A CN109687810A CN 109687810 A CN109687810 A CN 109687810A CN 201811556642 A CN201811556642 A CN 201811556642A CN 109687810 A CN109687810 A CN 109687810A
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- speed
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- power source
- revolution
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/10—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors for preventing overspeed or under speed
-
- 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
- B60L15/209—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 overtaking
-
- 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
- B60L2200/00—Type of vehicles
- B60L2200/36—Vehicles designed to transport cargo, e.g. trucks
-
- 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
- Y02T10/64—Electric machine technologies in electromobility
-
- 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)
Abstract
The invention discloses the method for controlling number of revolution that a kind of pure electric vehicle logistic car prevents Motor Over Speed, method for controlling number of revolution uses pure electric vehicle logistic car, entire car controller, power source controller, driving motor, motor speed sensing module and torque analysis software, entire car controller, power source controller, driving motor, motor speed sensing module are all installed on pure electric vehicle logistic car, torque analysis software is installed on entire car controller, and method for controlling number of revolution is comprising steps of S1, judge road conditions；S2, acquisition driving motor tach signal；S3, driving motor peak torque and revolving speed are calculated；S4, the control of driving motor revolving speed.Closed-loop speed feedback accuracy of the present invention is high, effectively prevent exceeding the speed limit, and speed limit effect is good, avoids vehicle mechanical structural failure, greatly improves driver safety coefficient, adapts to different road conditions, and applicable vehicle range is wide, good market prospect.
Description
Technical field
The invention belongs to pure electric vehicle logistic car field, in particular to a kind of pure electric vehicle logistic car motor speed overspeed protection
Control method.
Background technique
China's new-energy automobile has been achieved for huge progress by nearly research and development in 10 years, and market acceptance is also got over
Come higher.Current new energy mainly has several major class such as pure electric vehicle, hybrid power and plug-in hybrid power, is related to single power source
And multi power source.Pure electric vehicle logistic car possesses low speed and accelerates fast, trip environmental protection, energy conservation etc. excellent compared with traditional logistics vehicle
Point.Simultaneously because the characteristics of motor low speed perseverance torque high speed invariable power, logistic car transmission mechanism is nearly all that single gear is direct-connected, comprehensive
The design requirements such as grade climbing performance, when speed is very high, motor speed also can be very high, or even close to the highest design speed of motor.
Meeting steep temperature rise after Motor Over Speed, there is the risk of damage motor body, this just needs to control motor speed, prevents it super
Speed.
Summary of the invention
In view of the problems of the existing technology, the present invention provides the revolving speeds that a kind of pure electric vehicle logistic car prevents Motor Over Speed
Control method, after the method for controlling number of revolution, closed-loop speed feedback accuracy is high, effectively prevent exceeding the speed limit, speed limit effect is good, keeps away
Exempt from vehicle mechanical structural failure, greatly improve driver safety coefficient, adapt to different road conditions, applicable vehicle range is wide, before market
Scape is good.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
The method for controlling number of revolution that a kind of pure electric vehicle logistic car prevents Motor Over Speed is provided, the method for controlling number of revolution uses pure electricity
Dynamic logistic car, entire car controller, power source controller, driving motor, motor speed sensing module and torque analysis software, it is described
Entire car controller, power source controller, driving motor, motor speed sensing module are all installed on the pure electric vehicle logistic car,
The torque analysis software is installed on the entire car controller, the motor speed sensing module and the entire car controller
Input terminal electrical connection, the output end of the entire car controller are electrically connected with the input terminal of the power source controller, the power
The output end of source controller is electrically connected with the driving motor, and the motor speed sensing module acquires turning for the driving motor
Speed；
The method for controlling number of revolution includes the following steps:
S1, judge road conditions: for different road conditions, taking different speed limit means, road conditions are divided into: normal road condition and long downhill path
Condition, driver manually select road conditions mode；
S2, acquisition driving motor tach signal: the motor speed sensing module acquires the real-time revolving speed of the driving motor, and
The real-time tach signal is sent to the entire car controller；
S3, calculate driving motor peak torque and revolving speed: the entire car controller receives the tach signal of the driving motor,
And according to the tach signal of presently described driving motor and power battery available power information, pass through the torque analysis software solution
Analysis calculates revolving speed corresponding to the peak torque of presently described driving motor；
S4, the control of driving motor revolving speed: when road conditions are normal road condition, when the revolving speed of the driving motor is less than speed limit value N1, institute
Power source controller is stated to the driving motor without speed limit processing, and the revolving speed of the driving motor is controlled in maximum speed
NmaxIt is interior；When the revolving speed of the driving motor is greater than or equal to speed limit value N1 and is less than maximum speed Nmax, the entire car controller
Speed limiting function is activated, limits the peak acceleration of the driving motor, and the power source controller controls the driving motor
Revolving speed in maximum speed NmaxIt is interior；
When road conditions are long descending road conditions, when the revolving speed of the driving motor is greater than or equal to maximum speed Nmax, the full-vehicle control
Device activates speed limiting function, sends negative torque and instructs to the power source controller, the power source controller receives negative torque
The driving motor output negative torque is controlled after instruction and carries out speed limit processing, is formed with maximum speed NmaxFor closing for rotating speed of target
Ring control loop.
In order to solve its technical problem, used further technical solution is the present invention:
It further says, in S4, the power source controller includes electric machine controller and engine controller, the power source
Controller executes negative torque output after receiving the negative torque requirement command of the entire car controller.
It further says, in S4, when the revolving speed of the driving motor is greater than or equal to speed limit value N1 and turns less than highest
Fast Nmax, the entire car controller activates speed limiting function, sends negative torque and instruct to the power source controller, the power source
Controller controls the driving motor output negative torque after receiving negative torque instruction, and the revolving speed of the driving motor reduces, directly
Acceleration to the driving motor is 0.
Further say, the motor speed sensing module be photoelectric rotary coder, magneto-electric rotary encoder and
One of contact brushes formula rotary encoder.
It further says, it is dynamic that the method for controlling number of revolution is applied to pure electric automobile, hybrid vehicle and plug-in mixing
One of power automobile.
The beneficial effects of the present invention are:
One, entire car controller of the invention acquires tach signal by motor speed sensing module, and according to tach signal and moves
Power battery available power information is gone out using torque analysis software analytical Calculation and is turned corresponding to the peak torque of current driving motor
Speed, when the revolving speed of driving motor is less than speed limit value, power source controller handles driving motor without speed limit, and driving motor
Revolving speed control in maximum speed；When the revolving speed of driving motor is greater than or equal to speed limit value and is less than maximum speed, vehicle control
Device processed activates speed limiting function, limits the peak acceleration of driving motor, and the revolving speed of power source controller control driving motor exists
In maximum speed；When the revolving speed of driving motor is greater than or equal to maximum speed, entire car controller activates speed limiting function, sends negative twist
Square is instructed to power source controller, and control driving motor output negative torque carries out after power source controller receives negative torque instruction
Speed limit processing is formed using maximum speed as the close loop control circuit of rotating speed of target, and closed-loop speed feedback accuracy is high, speed limit effect
It is good, it effectively prevent exceeding the speed limit, avoids vehicle mechanical structural failure, greatly improve driver safety coefficient；
Two, method for controlling number of revolution of the invention is suitable for pure electric automobile, hybrid vehicle and plug-in hybrid vehicle, together
When using the vehicle of the method for controlling number of revolution can be carried out under normal road condition and long descending road conditions car speed hypervelocity control, fit
It is wide with range, adapt to different road conditions, good market prospect.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention and the accompanying drawings.
Detailed description of the invention
Fig. 1 is the flow diagram of method for controlling number of revolution of the present invention.
Specific embodiment
Illustrate a specific embodiment of the invention below by way of particular specific embodiment, those skilled in the art can be by this
The revealed content of specification understands advantages of the present invention and effect easily.The present invention can also give in further, different ways
Implement, that is, under the scope of without departing substantially from disclosed, different modification and change can be given.
Embodiment: a kind of pure electric vehicle logistic car prevents the method for controlling number of revolution of Motor Over Speed, as shown in Figure 1, the revolving speed
Control method uses pure electric vehicle logistic car, entire car controller, power source controller, driving motor, motor speed sensing module
With torque analysis software, the entire car controller, power source controller, driving motor, motor speed sensing module are all installed on
On the pure electric vehicle logistic car, the torque analysis software is installed on the entire car controller, and the motor speed senses mould
Block is electrically connected with the input terminal of the entire car controller, and the output end of the entire car controller is defeated with the power source controller
Enter end electrical connection, the output end of the power source controller is electrically connected with the driving motor, the motor speed sensing module
Acquire the revolving speed of the driving motor；
The method for controlling number of revolution includes the following steps:
The first step judges road conditions: for different road conditions, taking different speed limit means, road conditions are divided into: under normal road condition and length
Slope road conditions, driver manually select road conditions mode；
Second step, acquisition driving motor tach signal: the motor speed sensing module acquires turning in real time for the driving motor
Speed, and the real-time tach signal is sent to the entire car controller；
Third step calculates driving motor peak torque and revolving speed: the entire car controller receives the revolving speed of the driving motor
Signal, and according to the tach signal of presently described driving motor and power battery available power information, it is parsed by the torque
Software analytical Calculation goes out revolving speed corresponding to the peak torque of presently described driving motor；
4th step, the control of driving motor revolving speed: when road conditions are normal road condition, when the revolving speed of the driving motor is less than speed limit value
N1, the power source controller handles the driving motor without speed limit, and the revolving speed of the driving motor is controlled most
High revolving speed NmaxIt is interior；When the revolving speed of the driving motor is greater than or equal to speed limit value N1 and is less than maximum speed Nmax, the vehicle
Controller activates speed limiting function, limits the peak acceleration of the driving motor, and the power source controller controls the drive
The revolving speed of dynamic motor is in maximum speed NmaxIt is interior；
When road conditions are long descending road conditions, when the revolving speed of the driving motor is greater than or equal to maximum speed Nmax, the full-vehicle control
Device activates speed limiting function, sends negative torque and instructs to the power source controller, the power source controller receives negative torque
The driving motor output negative torque is controlled after instruction and carries out speed limit processing, is formed with maximum speed NmaxFor closing for rotating speed of target
Ring control loop.
In the 4th step, the power source controller includes electric machine controller and engine controller, the power source control
Device processed executes negative torque output after receiving the negative torque requirement command of the entire car controller.
In the 4th step, when the revolving speed of the driving motor is greater than or equal to speed limit value N1 and is less than maximum speed Nmax, institute
Entire car controller activation speed limiting function is stated, negative torque is sent and instructs to the power source controller, the power source controller connects
The driving motor output negative torque is controlled after receiving negative torque instruction, the revolving speed of the driving motor reduces, until the drive
The acceleration of dynamic motor is 0.
The motor speed sensing module is photoelectric rotary coder, magneto-electric rotary encoder and the rotation of contact brushes formula
Turn any one rotary encoder type in encoder.
The method for controlling number of revolution is applied to appointing in pure electric automobile, hybrid vehicle and plug-in hybrid vehicle
It anticipates a kind of car category.
The course of work and working principle of the invention is as follows:
Entire car controller of the invention acquires tach signal by motor speed sensing module, and according to tach signal and power electric
Pond available power information goes out revolving speed corresponding to the peak torque of current driving motor using torque analysis software analytical Calculation,
When the revolving speed of driving motor is less than speed limit value, power source controller handles driving motor without speed limit, and driving motor
Revolving speed controls in maximum speed；When the revolving speed of driving motor is greater than or equal to speed limit value and is less than maximum speed, full-vehicle control
Device activates speed limiting function, limits the peak acceleration of driving motor, and the revolving speed of power source controller control driving motor is most
In high revolving speed；When the revolving speed of driving motor is greater than or equal to maximum speed, entire car controller activates speed limiting function, sends negative torque
Instruction is to power source controller, and control driving motor output negative torque is limited after power source controller receives negative torque instruction
Speed processing, forms using maximum speed as the close loop control circuit of rotating speed of target.
The above description is only an embodiment of the present invention, and not thereby the above description is only an embodiment of the present invention, not because
This limits the scope of the patents of the invention, all using equivalent structure made by description of the invention and accompanying drawing content, or directly or
Other related technical areas are used in indirectly, are included within the scope of the present invention.
Claims (5)
1. the method for controlling number of revolution that a kind of pure electric vehicle logistic car prevents Motor Over Speed, it is characterised in that: the method for controlling number of revolution
Using arrive pure electric vehicle logistic car, entire car controller, power source controller, driving motor, motor speed sensing module and torque solution
Software is analysed, the entire car controller, power source controller, driving motor, motor speed sensing module are all installed on the pure electricity
On dynamic logistic car, the torque analysis software is installed on the entire car controller, the motor speed sensing module with it is described
The input terminal of entire car controller is electrically connected, and the output end of the entire car controller and the input terminal of the power source controller are electrically connected
It connects, the output end of the power source controller is electrically connected with the driving motor, described in the motor speed sensing module acquisition
The revolving speed of driving motor；
The method for controlling number of revolution includes the following steps:
S1, judge road conditions: for different road conditions, taking different speed limit means, road conditions are divided into: normal road condition and long downhill path
Condition, driver manually select road conditions mode；
S2, acquisition driving motor tach signal: the motor speed sensing module acquires the real-time revolving speed of the driving motor, and
The real-time tach signal is sent to the entire car controller；
S3, calculate driving motor peak torque and revolving speed: the entire car controller receives the tach signal of the driving motor,
And according to the tach signal of presently described driving motor and power battery available power information, pass through the torque analysis software solution
Analysis calculates revolving speed corresponding to the peak torque of presently described driving motor；
S4, the control of driving motor revolving speed: when road conditions are normal road condition, when the revolving speed of the driving motor is less than speed limit value N1, institute
Power source controller is stated to the driving motor without speed limit processing, and the revolving speed of the driving motor is controlled in maximum speed
In Nmax；When the revolving speed of the driving motor is greater than or equal to speed limit value N1 and is less than maximum speed Nmax, the full-vehicle control
Device activates speed limiting function, limits the peak acceleration of the driving motor, and the power source controller controls the driving electricity
The revolving speed of machine is in maximum speed Nmax；
When road conditions are long descending road conditions, when the revolving speed of the driving motor is greater than or equal to maximum speed Nmax, the vehicle control
Device processed activates speed limiting function, sends negative torque and instructs to the power source controller, the power source controller receives negative twist
The driving motor output negative torque is controlled after square instruction and carries out speed limit processing, is formed using maximum speed Nmax as rotating speed of target
Close loop control circuit.
2. a kind of pure electric vehicle logistic car according to claim 1 prevents the method for controlling number of revolution of Motor Over Speed, feature exists
In: in S4, the power source controller includes electric machine controller and engine controller, and the power source controller receives
Negative torque output is executed after the negative torque requirement command of the entire car controller.
3. a kind of pure electric vehicle logistic car according to claim 1 prevents the method for controlling number of revolution of Motor Over Speed, feature exists
In: in S4, when the revolving speed of the driving motor is greater than or equal to speed limit value N1 and is less than maximum speed Nmax, the vehicle control
Device processed activates speed limiting function, sends negative torque and instructs to the power source controller, the power source controller receives negative twist
The driving motor output negative torque is controlled after square instruction, the revolving speed of the driving motor reduces, until the driving motor
Acceleration is 0.
4. a kind of pure electric vehicle logistic car according to claim 1 prevents the method for controlling number of revolution of Motor Over Speed, feature exists
In: the motor speed sensing module is that photoelectric rotary coder, magneto-electric rotary encoder and the rotation of contact brushes formula are compiled
At least one of code device.
5. a kind of pure electric vehicle logistic car according to claim 1 prevents the method for controlling number of revolution of Motor Over Speed, feature exists
In: the method for controlling number of revolution is applied at least one in pure electric automobile, hybrid vehicle and plug-in hybrid vehicle
Kind.
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| CN201811556642.4A CN109687810B (en) | 2018-12-19 | 2018-12-19 | Rotating speed control method for preventing motor overspeed of pure electric vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113650505A (en) * | 2021-09-15 | 2021-11-16 | 中山亿泰克电动车有限公司 | Downhill automatic deceleration algorithm for electric golf cart |
| US20220043409A1 (en) * | 2019-03-18 | 2022-02-10 | Sigmasense, Llc. | Motor input signal monitoring and conditioning |
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| CN113650505B (en) * | 2021-09-15 | 2024-01-30 | 中山亿泰克电动车有限公司 | Automatic deceleration algorithm for downhill of electric golf cart |
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