CN2673713Y - Brushless electric car digital intelligent controller - Google Patents
Brushless electric car digital intelligent controller Download PDFInfo
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- CN2673713Y CN2673713Y CN 200320104686 CN200320104686U CN2673713Y CN 2673713 Y CN2673713 Y CN 2673713Y CN 200320104686 CN200320104686 CN 200320104686 CN 200320104686 U CN200320104686 U CN 200320104686U CN 2673713 Y CN2673713 Y CN 2673713Y
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- brushless
- motor
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- control device
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Abstract
The utility model relates to a brushless electric car digital intelligent controller, comprising a speed sensor, a load sensor, a control option switch, a comparator, a handgrip speed controller, a brake controller, a single chip computer, a brushless direct current motor controller, a three-phase power switch and a brushless motor. The utility model directly detects instantaneous revolution speed signals and load signals on the optional middle position or the terminal of the electric bicycle transmission through the sensor. Through the processing of the single chip computer, the control option switch, the comparator, the brushless direct current motor controller, etc., the utility model can exactly and timely transport required electric quantity to the electric motor to control the motor always in efficient operating condition and the battery always in the optimum discharge condition. The service life of the battery is prolonged, and the increasing distance and the climbing capacity of the electric vehicle are increased. The utility model can automatically exclude artificial faulty operation, inaccurate control, and unnecessary electric quantity damage in other non-standard conditions, reaching the effects of efficient energy-saving and intelligent drive.
Description
Technical field
The utility model belongs to elec. vehicle control technology field, is specifically related to a kind of brushless electric vehicle numeral intelligent controller.
Background technology
Existing elec. vehicle as Electrical Bicycle, all has the controller that a cover is controlled the working condition of electrical motor, and this controller is according to bicyclist's manual operation instruction and the work at control motor.And the bicyclist to send the foundation of various instructions be that the sensation of the situation of riding and experience are judged, as in underload, the heavy lift state, under the different motoring conditions such as climbing, because the people can not feel the speed of elec. vehicle under various complex working conditions exactly, the load variations situation, the required effective power that provides of electrical motor under these states more can not be provided exactly, therefore, this artificial operation control is inaccurate often, sometimes or even wrong, can bring unnecessary damage to electrical motor, this is to cause the existing high major cause of Electrical Bicycle electrical motor repair rate, also cause simultaneously the big electric current degree of depth of storage battery, over discharge, shorten electrical motor and storage battery service life, for example going up a slope, people often wish that speed does not descend and increases input voltage in the time of against the wind, but electric current increases along with load increases constantly during owing to go up a slope, the rating horsepower that will surpass electrical motor, cause electrical motor stall heating even burn, it is also bigger to the lead-acid battery infringement to continue heavy-current discharge in addition, causes the shortening in its service life.
Summary of the invention
The purpose of this utility model is the defective that exists at existing elec. vehicle control, a kind of digital intelligent controller at the brushless electric vehicle is provided, by obtaining sensor from the middle optional position of Electrical Bicycle transmission or direct detected tach signal of terminal and load signal, convert thereof into digital signal by control circuit, handle, accurately in time required electric weight is flowed to electrical motor, the control motor is in mode of operation efficiently all the time, battery is in best discharge regime all the time, prolong the service life of battery, increase the continue distance and the hill climbing ability of elec. vehicle, automatically getting rid of the people is maloperation, control unnecessary electricity loss inaccurate and that other off-rating bring, reach energy-efficient, the effect of intelligent drives.
The technical solution of the utility model is as follows:
The digitalized intelligent electric vehicle control device, it keeps handle alignment circuit, brake control circuit, micro controller system, X in brushless DC motor control device, three-phase power switch and the brushless motor of traditional brushless electric vehicle control device, has increased speed sensor, load cell, control select switch, comparator.Wherein the universaling I/O port of micro controller system is received in the output of speed sensor, the restricting signal and the actuation signal of the universaling I/O port output of micro controller system; The output-parallel of load cell control select switch, through behind the diode again with the homophase input of the restricting signal device as a comparison in parallel of the mouth of handle speed governing and micro controller system output; The actuation signal of micro controller system inserts the control end that enables of X in brushless DC motor control device (as MC33035), and the output of brake control inserts the braking input end of X in brushless DC motor control device; The rotor-position sensor of brushless motor inserts the rotor-position sensor input pin of X in brushless DC motor control device, and the output of X in brushless DC motor control device drives three-phase power switch, the control brushless motor.If control select switch closure, then load cell output ground connection is manual control speed mode at this moment; If the control select switch disconnects, when load cell is output as zero, then the preferential electronic switch of Based Intelligent Control disconnects, be manual control speed mode this moment, non-vanishing when load cell output, then electronic switch is opened, and makes handle speed-regulating signal ground connection, this moment, Based Intelligent Control was preferential, was Based Intelligent Control speed mode.
The utility model has the advantages that: in former control circuit, increased speed sensor, load cell, realize directly detecting accurately by them from elec. vehicle transmission terminal or middle optional position, real tach signal and load signal, converting digital signal to by controller handles, accurately in time required electric weight is flowed to electrical motor, by pulse duration modulation, the synchro control output power of motor, the generation of electrical motor overload operation and stall when the heavy load operating mode such as avoiding going up a slope, the control motor is in mode of operation efficiently all the time, battery is in best discharge regime all the time, prolong the service life of battery, increase the continue distance and the hill climbing ability of vehicle, get rid of the people automatically and be maloperation, control unnecessary electricity loss inaccurate and that other off-rating bring.Select master cock by being provided with one simultaneously, allow user's selective system automatic speed regulation or, thereby make system have manual and automatic two states artificially by the speed governing of handle governor.Because the increase of mode, increasing an input selection control spare is comparator, to judge handle signal and that input of load cell signal as robot control system(RCS), and the time maintain speed and no longer to increase when speed reaches 20 kilometers/time, therefore be that vehicle has artificial control, Based Intelligent Control, manpower ride three kinds of controllable function such as intelligent compensation and occupation mode, intelligent sensing and people can substitute use for speed governing, can increase by 40% mileages of continuation than all-electric bicycle, safety is better, reach effect energy-efficient, intelligent drives.
Description of drawings
Fig. 1 is a total control circuit block diagram of the present utility model;
Fig. 2 is a circuit diagram of the present utility model.
The specific embodiment
Referring to Fig. 1; this example is that controller is used for brushless electric bicycle, and it is made up of speed sensor, load cell, handle alignment circuit, brake control circuit, micro controller system, X in brushless DC motor control device, under-voltage protecting circuit and current foldback circuit, control select switch, comparator, three-phase power switch and brushless motor.
Its circuit is connected to: control select switch of the output-parallel of load cell, through behind the diode again with the homophase input of the restricting signal device as a comparison in parallel of the mouth of handle speed governing and micro controller system output.The universaling I/O port of micro controller system is received in the output of speed sensor, the 20km/h restricting signal and the 5km/h actuation signal of the universaling I/O port output of micro controller system, the former and handle speed governing and load cell output-parallel, the latter inserts the control end that enables of X in brushless DC motor control device, brake control inserts the braking input end of X in brushless DC motor control device, the rotor-position sensor of electrical motor inserts the rotor-position sensor input end of X in brushless DC motor control device, the output of X in brushless DC motor control device drives three-phase power switch, three-phase bridge is both sides totally six power switchs up and down, and inverter bridge is through a resistance R
SGround connection is made current sample, and sampled voltage inputs to the current sense comparator of X in brushless DC motor control device.Establish the low-voltage protection circuit in the X in brushless DC motor control device, as this chip voltage V
CC, V
CClose when not enough and drive output.
Wherein, the X in brushless DC motor control device adopts the X in brushless DC motor control device special IC MC33035 of MOTORROLA company, and chief component comprises: the internal reference power supply of rotor-position sensor decoder circuit, band temperature compensating, sawtooth oscillator, error amplifier, pulse duration modulation (PWM) comparator, output driving circuit, the under-voltage that frequency can be set are blocked fault output, current-limiting circuits such as protection and chip overheating protection.
Specify the service condition of this controller below in conjunction with Fig. 2:
This controller by the speed sensor that is installed in elec. vehicle transmission device terminal (as the hind axle of bicycle) and load cell with real-time speed signal and load signal form input controller with voltage.Speed sensor is a Hall switch sensor, evenly pastes four blocks of magnet steel at the disk border of non-magnetic material, and disk is fixed in the tested rotating shaft.Hall switch sensor is fixed near the disk outer rim, and disk whenever rotates a circle, and Hall element is just exported four pulses, handles these pulses with micro controller system, just knows rotating speed.When the speed of Electrical Bicycle reaches after five kilometers, be after the input pulse of micro controller system (P3.4) paper speed sensor reaches some, P1.7 exports a high level, open aerotron V1, make the control end input that enables of X in brushless DC motor control device become high level, brushless direct current motor controller can be started working.When the speed of Electrical Bicycle reaches 20 kilometers, P1.6 exports a high level, opens aerotron V2, bleeds off a part of electric energy of capacitor C 17, thereby reduce the error amplifier homophase input of X in brushless DC motor control device, the speed of control Electrical Bicycle no longer improves; When 20 kilometers of the underspeeds of Electrical Bicycle, P1.6 output low level, displacement pickup and handle governor make the voltage of electric capacity rise to capacitor C 17 chargings, thereby improve the error amplifier input of X in brushless DC motor control device, make the speed of Electrical Bicycle rise.
What load cell used is to be linear hall sensor, pastes an annular magnetic steel at the disk border of non-magnetic material, and disk is fixed in the tested rotating shaft.Linear hall sensor is fixed near the disk outer rim, and the S utmost point and the N utmost point are installed in the both sides of disk respectively.When Hall element apart from the distance of magnet steel not simultaneously, the S utmost point and the N utmost point change between 0～2.5V, 2.5～5V respectively, after the output signal of the S utmost point and the N utmost point inserted op amp and handle, obtain the signal of a 0～5V, this signal is directly proportional with condition of loading, is entered into and handles the purpose that reaches control rate in the control system.
After the bicyclist pinched brake, the Hall element output signal that is contained in the brake became low level, and then aerotron V4 turn-offs, and the braking of X in brushless DC motor control device is input as height, and motor braking slows down; When not pinching brake, sensor output high level, aerotron V4 conducting, the braking of X in brushless DC motor control device is input as low, the electrical motor normal operation.
The handle speed governing is the input end of artificial control rate, and load cell is the input end of control system automatic speed regulation.When Electrical Bicycle operates in the manual governing state, adopt the mode of handle speed control, allow the bicyclist arbitrarily control moving velocity, this mode is mainly used under underloaded operating modes such as level road; When Electrical Bicycle operates in the intelligent speed-regulating state; consider the restriction power of motor, prevent stall, the protection battery problem; therefore adopt the preferential mode of load cell control; load curve automatic guidance moving velocity by prior setting; under the prerequisite of protection system, move with high as far as possible speed; when certain moment, load cell was output as zero, then handle was imported control rate.When the load of load cell detection Electrical Bicycle surpasses certain value, high level of amplifier N4B output is opened aerotron V3, the input end grounding that makes the handle speed governing, thereby shielding manual speed input, the X in brushless DC motor control device is according to the input service of load cell, the generation of motor overload operation and stall when the heavy load operating mode such as avoiding going up a slope.
Because the power supply of Electrical Bicycle is a direct-flow storage battery, and the rating horsepower of motor is lower, for life-span of increasing storage battery, prevent that motor overload, control system from having added overcurrent protection and under-voltage protecting circuit.The X in brushless DC motor control device has current limit function, and extraneous inverter bridge is through a resistance R
SConnect the base current sample, sampled voltage inputs to current sense comparator by 9 and 15 pin, the comparator inverting input is provided with the 100mV reference voltage as the current limitation benchmark, in oscillator sawtooth wave build up time, if electric current is excessive, this comparator upset is reset rest-set flip-flop, to drive output and close, and continue to increase with the restriction electric current.In sawtooth wave fall time,, make that to drive output open-minded again with binary pair set.Utilize such periodic current one by one relatively, realized current limliting.For fear of causing the current detecting misoperation, before the input of 9 pin, the RC low-pass filter is set by the commutation spike.The X in brushless DC motor control device has the low-voltage protection function, and X in brushless DC motor control device inside is provided with the low-voltage protection circuit, as chip voltage V
CC, V
CClose when not enough (typical matter is lower than 9.1V) and drive output, all working properly to guarantee chip internal.Low-voltage protection does not have latch function, and after voltage recovered normally, system can recover normal automatically.
When abnormal position transduser input state, current detecting end input voltage occurring and be faulty condition such as logic low greater than 100Mv, low-voltage protection, inside chip overheated (representative value is above 170 ℃), Enable Pin (7 pin); the low comment of 14 pin output of X in brushless DC motor control device, this moment, LED was bright.
Unless because excess current or faulty condition make six to drive the output locking, the X in brushless DC motor control device under normal circumstances, error amplifier output and oscillator output sawtooth signal relatively after, produce pulse duration modulation (PWM) signal, control three very unwise moves and drives and export.Change output pulse width, be equivalent to change the average voltage of supplying with motor winding, thus controller rotating speed and torque.
The rotor-position sensor decoding scheme of X in brushless DC motor control device converts the rotor-position sensor signal of electrical motor to six tunnel drive output signal, on three the tunnel under the side drive output and three tunnel side drive export.
Claims (4)
1, brushless electric vehicle numeral intelligent controller, it comprises handle speed governing, brake control, micro controller system, three-phase power switch, X in brushless DC motor control device and brushless motor, it is characterized in that: also be provided with speed sensor, load cell, control select switch, comparator; Wherein the universaling I/O port of micro controller system is received in the output of speed sensor, the restricting signal and the actuation signal of the universaling I/O port output of micro controller system; The output-parallel of load cell control select switch, through behind the diode again with the homophase input of the restricting signal device as a comparison in parallel of the mouth of handle speed governing and micro controller system output; The actuation signal of micro controller system inserts the control end that enables of X in brushless DC motor control device, and the output of brake control inserts the braking input end of X in brushless DC motor control device; The rotor-position sensor of brushless motor inserts the rotor-position sensor input pin of X in brushless DC motor control device, and the output of X in brushless DC motor control device drives three-phase power switch, the control brushless motor.
2, brushless electric vehicle numeral intelligent controller according to claim 1, it is characterized in that: speed sensor is a Hall switch sensor, be installed in elec. vehicle transmission device midway location or terminal tested rotating shaft rotatable parts near, the induction rotatable parts speed signal; Load cell is linear Hall element, also be fixed on tested rotating shaft displacement component near, induction is with the displacement signal on the proportional mobile displacement component of load state.
3, brushless electric vehicle numeral intelligent controller according to claim 1 and 2, it is characterized in that: the three-phase bridge of three-phase power switch is both sides totally six power switchs up and down, inverter bridge is made current sample through a resistance R S ground connection, and sampled voltage inputs to the current sense comparator in the X in brushless DC motor control device.
4, brushless electric vehicle numeral intelligent controller according to claim 1 and 2, it is characterized in that: also have the under-voltage protecting circuit and the current foldback circuit of electrical motor, their output-parallel inserts the X in brushless DC motor control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320104686 CN2673713Y (en) | 2003-12-27 | 2003-12-27 | Brushless electric car digital intelligent controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320104686 CN2673713Y (en) | 2003-12-27 | 2003-12-27 | Brushless electric car digital intelligent controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2673713Y true CN2673713Y (en) | 2005-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320104686 Expired - Fee Related CN2673713Y (en) | 2003-12-27 | 2003-12-27 | Brushless electric car digital intelligent controller |
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| Country | Link |
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| CN (1) | CN2673713Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957369A (en) * | 2012-11-20 | 2013-03-06 | 无锡商业职业技术学院 | Brushless DC (Direct Current) motor speed regulation device on basis of DSP (Digital Signal Processor) |
-
2003
- 2003-12-27 CN CN 200320104686 patent/CN2673713Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957369A (en) * | 2012-11-20 | 2013-03-06 | 无锡商业职业技术学院 | Brushless DC (Direct Current) motor speed regulation device on basis of DSP (Digital Signal Processor) |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |