CN103921692A - Speed control method of all-electric vehicle top-mounted equipment and all-electric vehicle - Google Patents
Speed control method of all-electric vehicle top-mounted equipment and all-electric vehicle Download PDFInfo
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- CN103921692A CN103921692A CN201410084690.3A CN201410084690A CN103921692A CN 103921692 A CN103921692 A CN 103921692A CN 201410084690 A CN201410084690 A CN 201410084690A CN 103921692 A CN103921692 A CN 103921692A
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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
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Abstract
A speed control method of all-electric vehicle top-mounted equipment includes the steps: when an all-electric vehicle operates in a top-mounted equipment mode, a power takeoff engages a gear, and a gear signal of a speed control switch for regulating target speed of a drive motor is received; whether or not voltage corresponding to the gear signal outputted by the speed control switch is normal is judged; if yes, the drive motor operates at the target speed matching with the gear of the speed control switch until the top-mounted equipment finishes operating; if not, the drive motor is shut down. The invention further discloses the all-electric vehicle employing the method. The speed of the drive motor and that of the power takeoff can be regulated through the speed control switch, one all-electric vehicle chassis can adapt to different top-mounted devices and accordingly can adapt to special vehicles for different purposes, the requirement for platform development of vehicles is met, and the operation requirement of special vehicles which operate with complexity can be well met.
Description
Technical field
The present invention relates to a kind of method for controlling speed regulation, on especially a kind of pure electric vehicle, install standby method for controlling speed regulation.The invention still further relates to a kind of pure electric vehicle of realizing said method.
Background technology
In order to accelerate new-energy automobile industry development, propulsion energy-saving reduces discharging, and promotes air contaminant treatment, and country continues to carry out new-energy automobile and applies work.Pure electric vehicle wherein, using high voltage power battery as unique energy, by direct motor drive Vehicle Driving Cycle, possesses the advantage such as zero-emission, low noise, can be widely used in fields such as postal service, logistics, environmental sanitation, is more and more subject to the attention of country and enterprise.Pure electric vehicle can be divided into shirtless equipment (as logistic car) and have standby (as sanitation cart) the two large classes of upper installing, installs in standby special vehicle and be divided into again and in requirement, install for operation in the time of stationary vehicle (as kitchen waste cart, removable jew chamber type refuse etc.) and require two classes of operation (as road sweeper, water truck etc.) simultaneously between vehicle is advanced on having.
For the pure electric vehicle that requires static operation, with reference to Fig. 1, drive motor 3 output torques output to rear wheel 2 via power-transfer clutch 4, change speed gear box 5, transmission shaft 8, main reduction gear diff 9, semiaxis 10, drive Vehicle Driving Cycle.Consider the factors such as exploitation, production, later maintenance, current adopt installed power takeoff 6 more on change speed gear box 5, from drive motor 3 power takings for installing is standby provides power this mode.This class pure electric vehicle is only provided with a drive motor 3, and under motoring condition, drive motor 3 is responsible for driving Vehicle Driving Cycle; When on needs, installing is for work, first vehicle comes to a complete stop, hang and control power takeoff 6 after neutral and first engage with gearbox gear, the moment of torsion that drive motor 3 is exported passes to power takeoff 6 by change speed gear box 5, drive motor 3 is the mode of being rigidly connected with power takeoff 6, and the rotating speed of power takeoff 6 and drive motor 3 rotating speeds are proportional.Common special vehicle Shang Zhuan operating mechanism is used hydraulic driving mode more, and the propulsion source-Hydraulic Pump 7 of hydraulic efficiency pressure system is rigidly connected with power takeoff 6 mouths, and power takeoff 6 is consistent with Hydraulic Pump 7 rotating speeds.Under hydraulic efficiency pressure system safe pressure scope, Hydraulic Pump 7 rotating speeds are higher, the pressure of hydraulic efficiency pressure system is higher, and the standby responsiveness of upper installing is faster, if instead reduce Hydraulic Pump 7 rotating speeds, hydraulic system pressure reduces, the standby responsiveness of upper installing is thereupon slack-off.In sum, drive motor 3 rotating speeds are directly proportional to Hydraulic Pump 7 rotating speeds, by adjusting drive motor 3 rotating speed speeds, just can realize the adjusting to hydraulic system pressure, thereby accelerate or the upper dress equipment moving speed that slows down.
In at present common pure electric vehicle chassis power takeoff 6 control methods, when the standby work of upper installing, be all to control drive motor 3 to move with single constant rotational speed.Special vehicle field vehicle is numerous, and refitting factory or main engine plants often first develop a pure electric chassis, and the different upper installing of arranging in pairs or groups is on its basis standby, produces the special vehicle of different purposes.Require to be also not quite similar for power takeoff 6 working speeds and the corresponding special upper installing of difference is standby, pure electric vehicle chassis adopts single constant speed control can not meet the requirement of vehicle hardware and software platform exploitation, can not finely meet again sinuous special vehicle job requirements.For example kitchen waste cart can begin turning after sewage disposer is thus lifted to roof, and rubbish is poured in rear cabinet, if reversal rate is too fast, changing food waste probably splashes out and causes secondary pollution, if the logical reversal rate of rubbish is adjustable, can suitably slow down; Such as in garbage reclamation treatment plant, compartment released by rubbish by the push pedal in garbage reclamation rear cabinet, if the speed of push pedal release and return is adjustable, can avoids the too fast release of rubbish to cause and spill leakage, can accelerate again return speed again, improves vehicle operation efficiency.
In view of this, special proposition the present invention.
Summary of the invention
The object of this invention is to provide on a kind of pure electric vehicle that makes a pure electric vehicle chassis special be applicable to the various with the requirement of different power takeoff rotating speed and install standby method for controlling speed regulation.
The present invention also aims to provide a kind of pure electric vehicle.
For solving the problems of the technologies described above, the present invention adopts the basic conception of technical scheme to be:
On pure electric vehicle, install a standby method for controlling speed regulation, comprise the following steps: pure electric vehicle on fill mode of operation in the situation that,
Power takeoff engage a gear, receives the gear signal that is used for the speed control switch that regulates drive motor rotating speed of target;
Judge that whether the magnitude of voltage that the shift signal of described speed control switch output is corresponding is normal: if normal, drive motor moves until upper dress equipment availability completes according to rotating speed of target mate with described speed control switch gear; Otherwise, close described drive motor.
Preferably, in the time that the magnitude of voltage corresponding to gear signal of described speed control switch output is the discountinuity magnitude of voltage of 0.5-1V, 1.5-2V, 2.5-3V, 3.5-4V, determines that the gear signal of described speed control switch output is normal, otherwise be mal.
Entire car controller is chosen the rotating speed of target of described drive motor according to the gear signal of speed control switch output, and described rotating speed of target is sent to electric machine controller, and drive motor moves according to described rotating speed of target described in described motor controller controls.
When receiving that filling mode of operation actuation signal, vehicle parking brake on pure electric vehicle draws that to open signal, vehicle gear box neutral signal, vehicle speed be that zero-signal, vehicular drive motor actual torque are that zero-signal and vehicular drive motor actual speed determine that pure electric vehicle is in upper dress mode of operation while being zero-signal.
Fill mode of operation actuation signal when receiving on pure electric vehicle, do not receive that vehicle parking brake draws that to open signal, vehicle gear box neutral signal, vehicle speed be that zero-signal, vehicular drive motor actual torque are that zero-signal and vehicular drive motor actual speed are sent cue while being zero-signal.
At pure electric vehicle, in the situation that travelling mode of operation, the gear of described speed control switch is transferred to and is closed shelves, and power takeoff moves back shelves, and pure electric vehicle enters motoring condition.
When receiving that filling mode of operation closing signal, vehicle speed on pure electric vehicle is greater than and closes vehicular drive motor when zero-signal, vehicle parking brake unlock signal, vehicle gear box are left the arbitrary signal of neutral signal, be that 1 o'clock power takeoff is plucked gear in described vehicular drive motor actual speed and actual torque, pure electric vehicle enters the mode of operation that travels.
At pure electric vehicle during in motoring condition, if the gear of described speed control switch, in rotating speed shelves, is pointed out speed control switch gear is adjusted to and closes gear.
Vehicle gear box neutral signal is obtained by the shift sensor being arranged on vehicle gear box, fills mode of operation and obtained by power take-off valve state on described pure electric vehicle, and vehicle parking brake signal is obtained by entire car controller, and vehicle speed signal is obtained by instrument.
A kind of pure electric vehicle, comprise drive motor, entire car controller and directly control the electric machine controller of described drive motor, it is characterized in that, also comprise speed control switch, described speed control switch is driving switch, described speed control switch connects the input of described entire car controller, and the output of described entire car controller connects the input of described electric machine controller, and the output of electric machine controller connects the control end of described drive motor.
Beneficial effect of the present invention is: the present invention can be by regulating speed control switch to regulate the rotating speed of drive motor and power takeoff, thereby can make a pure electric vehicle chassis standby applicable to different upper installings, and then make it adapt to the battery-driven car special vehicle vehicle of different purposes, thereby both met the requirement of vehicle hardware and software platform exploitation, and can finely meet again sinuous special vehicle job requirements.
Brief description of the drawings
Fig. 1 is the structural representation of pure electric vehicle of the present invention;
Fig. 2 installs standby a kind of method for controlling speed regulation diagram of circuit on pure electric vehicle of the present invention;
Fig. 3 is the connection line figure of speed control switch and drive motor.
Detailed description of the invention
In order to make those skilled in the art person understand better the present invention program, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
With reference to Fig. 2, the present invention installs standby method for controlling speed regulation on a kind of pure electric vehicle, and the vehicle of upper dress equipment availability while being applicable to stationary vehicle, comprises the following steps:
Perform step S101 at step S100, vehicle (pure electric vehicle) during in motoring condition, judge whether the condition of vehicle in upper dress mode of operation is set up, if determine in upper dress mode of operation, perform step S102, power takeoff engage a gear; If upper dress mode of operation condition is false, carry out corresponding operating, then repeating step S101; After S103, power takeoff engage a gear, receive the gear signal of the speed control switch for regulating drive motor rotating speed of target; S104, judge that whether the magnitude of voltage that the shift signal of described speed control switch output is corresponding is normal: if normal, perform step S105, drive motor moves until upper dress equipment availability completes according to rotating speed of target mate with described speed control switch gear; If the magnitude of voltage mal corresponding to shift signal of described speed control switch output, performs step S108, closes described drive motor.After above-mentioned steps S105 and S108 complete, execution step S106, judge that whether car travel mode condition set up; If set up, perform step S107, power takeoff is plucked gear, vehicle enters motoring condition, otherwise continues execution step S103.
In the time that the magnitude of voltage corresponding to gear signal of described speed control switch output is the discountinuity magnitude of voltage of 0.5-1V, 1.5-2V, 2.5-3V, 3.5-4V, determines that the gear signal of described speed control switch output is normal, otherwise be mal.As 0.5-1V for closing shelves, 1.5-2V is low gear, 2.5-3V is mid ranger, 3.5-4V is high speed gear.Whether checking output signal normally can ensure personnel, device security.
When receiving that filling mode of operation actuation signal, vehicle parking brake on pure electric vehicle draws that to open signal, vehicle gear box neutral signal, vehicle speed be that zero-signal, vehicular drive motor actual torque are that zero-signal and vehicular drive motor actual speed determine that pure electric vehicle is in upper dress mode of operation while being zero-signal.
On pure electric vehicle, fill mode of operation actuation signal when receiving, do not receive that vehicle parking brake draws that to open signal, vehicle gear box neutral signal, vehicle speed be that zero-signal, vehicular drive motor actual torque are that zero-signal and vehicular drive motor actual speed are sent cue while being zero-signal, as prompting chaufeur is noted.
At pure electric vehicle, in the situation that travelling mode of operation, the gear of described speed control switch is transferred to and is closed shelves, and power takeoff moves back shelves, and pure electric vehicle enters motoring condition.
When receiving that filling mode of operation closing signal, vehicle speed on pure electric vehicle is greater than and closes vehicular drive motor when zero-signal, vehicle parking brake unlock signal, vehicle gear box are left the arbitrary signal of neutral signal, be that 1 o'clock power takeoff is plucked gear in described vehicular drive motor actual speed and actual torque, pure electric vehicle enters the mode of operation that travels.
At pure electric vehicle during in motoring condition, if the gear of described speed control switch, in rotating speed shelves, is pointed out speed control switch gear is adjusted to and closes gear.
Above-mentioned vehicle gear box neutral signal is obtained by the shift sensor being arranged on vehicle gear box, fills mode of operation and obtained by power take-off valve state on described pure electric vehicle, and vehicle parking brake signal is obtained by entire car controller, and vehicle speed signal is obtained by instrument.
Power take-off valve is rocker switch, has closed and disconnected two states, is arranged in operator's compartment and supplies driver's operation, and in the time installing standby work in hope, should make power take-off valve is closure state; When hope stops upper installing received shipment when capable, should make switch is off-state; Power take-off valve is connected to entire car controller and power takeoff gearshift by connection lead;
Instrument is responsible for gathering vehicle speed signal and is sent to entire car controller by CAN bus, receives the power takeoff working state signal that entire car controller sends simultaneously; Between instrument and entire car controller, use CAN network to communicate;
Electric machine controller direct controlling and driving motor, and communicate by CAN network with entire car controller, drive motor mode of operation signal, rotating speed of target signal and target torque signal are calculated in real time by entire car controller, and sending to electric machine controller, the On/Off of drive motor, mode of operation, output speed etc. are directly subject to motor controller controls.
Above-mentioned power take-off valve state is sent to entire car controller by power take-off valve by connection lead; Above-mentioned vehicle speed signal sends to entire car controller by instrument by CAN bus; Change speed gear box neutral signal is sent to entire car controller by shift sensor through connection lead; Power takeoff status signal sends to instrument by entire car controller by CAN bus, for lighting indicator lamp or the warning in instrument;
Realize a kind of pure electric vehicle of said method, at least comprise drive motor, entire car controller and directly control the electric machine controller of described drive motor, also comprise speed control switch, described speed control switch is driving switch, described speed control switch connects the input of described entire car controller, the output of described entire car controller connects the input of described electric machine controller, and the output of electric machine controller connects the control end of described drive motor.With reference to Fig. 3, the speed control switch 11 of pure electric vehicle is arranged on the power takeoff control panel of pure electric vehicle, be connected to entire car controller 12 by connection lead, the output of described entire car controller 12 connects the input of described electric machine controller 13, and the output of electric machine controller 13 connects the control end of described drive motor 14.The gear signal that entire car controller 12 is exported according to speed control switch 11 is chosen the rotating speed of target of described drive motor 14, and described rotating speed of target is sent to electric machine controller 13, described electric machine controller 13 is controlled described drive motor 14 and is moved according to described rotating speed of target.
Drive motor in the present invention possesses two kinds of mode of operations: rotating speed control mode and torque control mode.
The difference of two kinds of patterns is: under " rotating speed control mode ", the rotary speed instruction (being rotating speed of target) that electric machine controller only sends entire car controller responds; Corresponding, under " torque control mode ", the torque command (being target torque) that electric machine controller only sends entire car controller responds.
Example:
Rotating speed control mode: VCU(entire car controller) only need send to MCU(electric machine controller) require now drive motor to rotate with 500rpm, 500rpm is exactly rotating speed of target.MCU receives after instruction, control drive motor output torque, but the size of output torque is relevant with load, if motor load is little, the actual output torque of drive motor that reaches identical actual speed is little, just can maintain 500rpm, if motor load is large as needed only 10Nm, need larger actual output torque just can reach same actual speed, perhaps output torque as actual in drive motor will bring up to 100Nm just can maintain 500rpm.That is to say the rotating speed of target actual needs of realizing VCU is exported how many moments of torsion, is that MCU oneself controls completely, and the rotating speed that therefore VCU calculates is rotating speed of target, and the rotating speed that drive motor now really reaches is its actual speed;
Under rotating speed control mode, what stress is whether drive motor actual speed can be consistent with VCU the set goal rotating speed.Due to control accuracy reason, be not have energy on all four, be 500rpm as VCU sends rotating speed of target, actual speed is fluctuation (495rpm is to 505rpm) among a small circle near 500rpm, just thinks and meets operating needs.
Torque control mode: VCU only need send to the present demand motive motor of MCU to export how many moments of torsion.For example, in Vehicle Driving Cycle, Das Gaspedal has been operated half, and VCU parses the moment of torsion that chaufeur needs 100Nm accordingly.This 100Nm is exactly target torque, it can send in MCU, MCU receives after this instruction, controls drive motor output 100Nm, and for same 100Nm, same gear (such as 3 gears), if the level road speed of a motor vehicle can arrive 80km/h, motor speed is just at 4000rpm, if go up a slope, 100Nm can only allow vehicle travel with 40km/h speed, and corresponding motor speed has also just become 2000rpm.The moment of torsion that VCU calculates is target torque, and the moment of torsion that drive motor now really has is its actual torque.
Need equally clear and definite: under torque control mode, it is in full accord that the target torque that drive motor actual torque and VCU send can't reach, the target torque of the 100Nm also sending taking VCU is example, the actual output torque of drive motor can not be equal to 100Nm, always have little positive and negative deviation (such as actual output torque at 95Nm between 105Nm), if do not affect the control of actual vehicle in engineering, this error allows.
Under rotating speed pattern: only control rotating speed, the moment of torsion that a certain rotating speed can be corresponding different;
Under torque mode: a control torque, the rotating speed that a certain moment of torsion can be corresponding different.
As an example of the specific works flow process of a pure electronic kitchen waste cart example, the present invention is further described below.
In a kitchen waste-skip forming based on the exploitation of above-mentioned pure electric vehicle, apply control method of the present invention and carry out 3 grades of speed control of power takeoff.Wherein the corresponding speed setting of low gear is 100rpm, and mid ranger is 200rpm, and high speed gear is 800rpm.
Chaufeur steering vehicle arrives operating location and prepares to collect changing food waste, and after vehicle comes to a complete stop, change speed gear box is hung neutral, pull-up parking brake, and closed power take-off valve, vehicle enters dress mode of operation.After power takeoff completes and puts into gear, entire car controller just can drive motor.Chaufeur now operates the standby control stalk of installing, control button, speed control switch etc. and starts operation from operator's compartment moves on to vehicle.First chaufeur forwards speed control switch to mid ranger from closing shelves, and trunk upper cover is opened in operation, promotes sewage disposer.When sewage disposer is raised while approaching roof, for avoiding the too fast turnover of sewage disposer caused the splashing of tipping rubbish, forward speed control switch to low gear, command driven motor moves with slow speed of revolution.Rubbish is toppled over complete, puts down in sewage disposer process, can again heighten motor speed (mid ranger), makes sewage disposer returning quickly.After sewage disposer is taken, close trunk upper cover, complete garbage reclamation flow process one time.Chaufeur is screwed to speed control switch to close shelves, disconnects power take-off valve, and power takeoff is switched to driving mode after completing and plucking gear.
After garbage reclamation completes, vehicle is sailed back changing food waste and is reclaimed factory, treats that vehicle comes to a complete stop, chaufeur is hung make the return trip empty gear, pull-up parking brake, closed power take-off valve, and vehicle enters dress mode of operation.By speed control switch furnishing mid ranger, control and open rear cabinet tail-gate, release rubbish, in control push pedal return process, can use high speed gear, to accelerate operating speed.
For the kitchen waste cart generating based on the present invention, it distinguishes the standby mode of operation under different run locations or running state of different upper installings, make it with different speed operation, thereby prevent that rubbish from splashing, the too fast release of rubbish causes and spill the secondary pollution Lou causing, can accelerate again the return speed of trunk inner pushing plate, improve vehicle operation efficiency.
In the detailed description of the invention of above-mentioned kitchen waste cart, power takeoff can carry out third gear speed governing, install different upper installing for time, can adopt many grades of rotating speeds, but rotating speed is set should be met the following requirements:
Low gear, can set up the basic pressure of hydraulic efficiency pressure system, and power takeoff should be able to ensure that all types of upper dress device actions can normally move, but likely running velocity is excessively slow, affects special vehicle work efficiency;
Mid ranger, between low gear and high speed gear, the special vehicle that can will assemble according to pure electric vehicle chassis is mated;
High speed gear, is subject to following condition restriction: the hydraulic system pressure that a) power takeoff provides should be less than installing for the safe oil pressure of hydraulic control system, b) upper dress equipment moving speed is less than the highest design kinematic velocity, c) can not causes other personnel, vehicle safety hidden danger.
The present invention by increasing speed control switch in pure electric vehicle, change power takeoff rotating speed for the standby drive motor rotating speed of can adjusting at any time of the more complicated upper installing of function, and then the pressure of the upper dress of adjustment hydraulic control system, the standby running velocity of installing in change, to adapt to the standby operating feature of installing on certain, therefore can make that same pure electric vehicle and different upper installing are standby mates, form the special vehicle vehicle of different purposes, can be widely used in obtaining upper dress equipment dynamic by power takeoff, and by the pure electric vehicle of drive motor rotating speed control power takeoff rotating speed, thereby both met the requirement of vehicle hardware and software platform exploitation, can finely meet again sinuous special vehicle job requirements.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. on pure electric vehicle, install a standby method for controlling speed regulation, it is characterized in that, comprise the following steps: pure electric vehicle on fill mode of operation in the situation that,
Power takeoff engage a gear, receives the gear signal that is used for the speed control switch that regulates drive motor rotating speed of target;
Judge that whether the magnitude of voltage that the shift signal of described speed control switch output is corresponding is normal: if normal, drive motor moves until upper dress equipment availability completes according to rotating speed of target mate with described speed control switch gear; Otherwise, close described drive motor.
2. method for controlling speed regulation according to claim 1, it is characterized in that, in the time that the magnitude of voltage corresponding to gear signal of described speed control switch output is the discountinuity magnitude of voltage of 0.5-1V, 1.5-2V, 2.5-3V, 3.5-4V, the gear signal of determining described speed control switch output is normal, otherwise is mal.
3. method for controlling speed regulation according to claim 1, it is characterized in that, entire car controller is chosen the rotating speed of target of described drive motor according to the gear signal of speed control switch output, and described rotating speed of target is sent to electric machine controller, drive motor moves according to described rotating speed of target described in described motor controller controls.
4. method for controlling speed regulation according to claim 1, it is characterized in that, when receiving that filling mode of operation actuation signal, vehicle parking brake on pure electric vehicle draws that to open signal, vehicle gear box neutral signal, vehicle speed be that zero-signal, vehicular drive motor actual torque are that zero-signal and vehicular drive motor actual speed determine that pure electric vehicle is in upper dress mode of operation while being zero-signal.
5. method for controlling speed regulation according to claim 4, it is characterized in that, fill mode of operation actuation signal when receiving on pure electric vehicle, do not receive that vehicle parking brake draws that to open signal, vehicle gear box neutral signal, vehicle speed be that zero-signal, vehicular drive motor actual torque are that zero-signal and vehicular drive motor actual speed are sent cue while being zero-signal.
6. method for controlling speed regulation according to claim 1, is characterized in that, at pure electric vehicle, in the situation that travelling mode of operation, the gear of described speed control switch is transferred to and is closed shelves, and power takeoff moves back shelves, and pure electric vehicle enters motoring condition.
7. method for controlling speed regulation according to claim 6, it is characterized in that, when receiving that filling mode of operation closing signal, vehicle speed on pure electric vehicle is greater than and closes vehicular drive motor when zero-signal, vehicle parking brake unlock signal, vehicle gear box are left the arbitrary signal of neutral signal, be that 1 o'clock power takeoff is plucked gear in described vehicular drive motor actual speed and actual torque, pure electric vehicle enters the mode of operation that travels.
8. method for controlling speed regulation according to claim 6, is characterized in that, at pure electric vehicle during in motoring condition, if the gear of described speed control switch, in rotating speed shelves, is pointed out speed control switch gear is adjusted to and closes gear.
9. according to the method for controlling speed regulation described in claim 4 or 7, it is characterized in that, vehicle gear box neutral signal is obtained by the shift sensor being arranged on vehicle gear box, on described pure electric vehicle, filling mode of operation is obtained by power take-off valve state, vehicle parking brake signal is obtained by entire car controller, and vehicle speed signal is obtained by instrument.
10. a pure electric vehicle, comprise drive motor, entire car controller and directly control the electric machine controller of described drive motor, it is characterized in that, also comprise speed control switch, described speed control switch is driving switch, described speed control switch connects the input of described entire car controller, and the output of described entire car controller connects the input of described electric machine controller, and the output of electric machine controller connects the control end of described drive motor.
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| CN107097632A (en) * | 2017-04-28 | 2017-08-29 | 东风商用车有限公司 | Power take-off structure of automatic-gear hybrid power sanitation vehicle and control method thereof |
| CN110712521A (en) * | 2019-09-24 | 2020-01-21 | 西安法士特汽车传动有限公司 | Transmission power takeoff system for pure electric vehicle and control method thereof |
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| CN113787618A (en) * | 2021-08-23 | 2021-12-14 | 三一汽车制造有限公司 | Mixing drum rotating speed control method and device and mixing truck |
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| CN114407646A (en) * | 2022-02-10 | 2022-04-29 | 湖南行必达网联科技有限公司 | Intelligent control method and system for power takeoff |
| US11400772B2 (en) | 2020-02-26 | 2022-08-02 | Ateq | Scanning method and device for tire pressure monitoring system (tpms) protocols |
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