CN100333965C - Speed controlled proportional assisted electric bicycle control system - Google Patents
Speed controlled proportional assisted electric bicycle control system Download PDFInfo
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- CN100333965C CN100333965C CNB031582664A CN03158266A CN100333965C CN 100333965 C CN100333965 C CN 100333965C CN B031582664 A CNB031582664 A CN B031582664A CN 03158266 A CN03158266 A CN 03158266A CN 100333965 C CN100333965 C CN 100333965C
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Abstract
The present invention relates to a speed-control type proportional power-assisted control system for an electric bicycle, which is connected with an original controller of the electric bicycle. The present invention has the technical scheme that the output of a motor is controlled by the original controller of the electric bicycle; the electric bicycle has two working modes of full electrical power assistance and electrical-manpower power assistance; the present invention is characterized in that speed sensors are arranged on a front wheel and a middle shaft of the electric bicycle and are respectively used for transmitting the detected speed signals into a proportional power-assisted controller, then the controller outputs control signals to the original controller of the electric bicycle after analyzing and transforming the speed signals, and the output power of the motor is controlled by the controller. The speed-control type proportional power-assisted control system has the advantages of simple structure, precise control, high stability and low cost.
Description
Technical field
The present invention relates to a kind of assisted electric vehicle motor horsepower output mode, specifically a kind of speed control formula ratio assisted electric bicycle control system of utilizing speed to control the motor horsepower output.
Background technology
At present, Electrical Bicycle is very universal at home and abroad.And at present domestic Electrical Bicycle is the battery-driven car of all-electric driving mostly, though all is equipped with on most of Electrical Bicycle foot-operated, this foot-operated have only just to assist in the time of will going up abrupt slope and dead battery use somebody even simply will ride down.This type of drive not only makes tricycle feel dry as dust in riding in the long period, and the muscle of human body can not get taking exercise easy generation sense of fatigue, and unfavorable to the service life of battery and once electrically-charged continual mileage.And the people helps car moving, the electricity row of helping others, the laborsaving power saving again of running method of manpower electric power interlock.Long-time all-electric ride or manpower is ridden and all can be felt tired, best bet is that the ratio power-assisted is ridden and all-electric riding is used alternatingly, and gives full play to advantage separately.In the ratio force aid system, if the power-assisted ratio is suitable, leg is that little firmly muscle takes it easy and car fast turn-around, thisly feels very peculiar.At first be that the people has participated in this motion, the taste of leisure has infiltrated gradually, can go out a kind of enjoyment of people's car unification by product.Moreover in the real life of city, because many, the on and off duty peak load conditions people of traffic lights are many, car is many, allow Electrical Bicycle full speed ahead and be impossible, also be unsafe, and the driving of ratio power-assisted is best selection.Employing ratio power-assisted drives can avoid the discharge of battery super-large current, helps prolonging battery and electrical machinery life.Again from the angle of economize on electricity, all-electric continually startup is power consumption, start with the ratio power-assisted then to reach purpose of power saving, thus the mileages of continuation of raising battery-driven car.Therefore, manpower and electric power interlock bicycle have become development tendency, are the vehicles of developed country's first-selection.
And existing ratio power-assisted electric vehicle all is to adopt torque sensor or the distortion of axis torsion, chain tension, grating circuit to wait the horsepower output of controlling motor.All there is complex structure in these master modes, difficulty of processing is big, cost is high, precision is difficult to a series of problems such as control, poor stability and is difficult to popularize, and have limited the development of ratio power-assisted electric vehicle.
Summary of the invention
The objective of the invention is to utilize the speed of bicycle and the relation of motor horsepower output that a kind of new ratio assisted control system is provided.
Technical scheme of the present invention is:
A kind of speed control formula ratio assisted electric bicycle control system, link to each other with the former controller of battery-driven car, output by the former controller control of battery-driven car motor, battery-driven car has the all-electric and electronic two kinds of mode of operations of manpower power-assist that add, it is characterized in that on the front-wheel of Electrical Bicycle and axis, speed sensor being installed, speed sensor on front-wheel and the axis is sent into the speed signal that records in the ratio assist controller respectively, the ratio assist controller with the speed signal analytic transformation after to the former controller of battery-driven car output control signal, the horsepower output by former controller control motor again.
The present invention has made full use of the former control structure of existing all-electric battery-driven car, substantially do not change the line construction of existing all-electric battery-driven car, as long as a speed sensor respectively is installed on front-wheel and axis, pass the signal to again in the ratio assist controller, and ratio assist controller volume is very little, can be connected separately with the former controller of existing battery-driven car, also can link to each other with speed adjusting handle for electric vehicle and the former controller of battery-driven car simultaneously, the speed adjusting handle for electric vehicle action, then be all-electric mode of operation, ratio assist controller of the present invention directly outputs to the signal of speed-regulating handle bar in the former controller.Speed adjusting handle for electric vehicle keeps motionless at initial position, and then for electric power adds manpower power-assist mode of operation, front-wheel that ratio assist controller module analysis is current and axis speed are exported an appropriate signal and given former controller, thus the horsepower output of control motor.
The core of ratio assist controller of the present invention is a micro controller system, it can realize the conversion of conversion, analysis and output control signal to incoming signal under the control of program, realization is to the control of the former controller input signal of battery-driven car, and then control motor horsepower output.
When the speed of front-wheel or axis is zero, then cut off motor power; When the ratio of the speed of front-wheel and axis speed during greater than the ratio of teeth number of sprocket and the flywheel number of teeth, promptly foot-operated when stepping on sky, also cut off motor power, Electrical Bicycle is by inertia to overtake.
The shared same micro controller system of the former controller of the micro controller system of ratio assist controller and battery-driven car is to save cost and the volume that reduces control system; The former controller of ratio assist controller and battery-driven car also can be installed on the same control circuit board, and is installed in the same control capsule, can reduce the volume of control system, reduces the circuit transmission loss, improves reliability.
Beneficial effect of the present invention:
1, simple in structure, easy to maintenance.Not only be suitable for the use of new car, also be applicable to transformation, and improvement expenses get final product about 100 yuan existing battery-driven car.
2, control accuracy height, stable performance can not produce misoperation.
3, manufacturing is simple, cost is low, and speed sensor and micro controller system are ripe electronic product, and cost is very cheap.
4, software programming is simple, as long as the relation curve of power-assisted ratio, speed and manpower, power of motor and the gross horsepower with reference to the accompanying drawings can be worked out out corresponding program, imports then in the micro controller system and can use.
Description of drawings
Fig. 1 is existing Electrical Bicycle general purpose control system architecture diagram.
Fig. 2 is the moving velocity of all-electric bicycle and the corresponding relation figure of current/power.
Fig. 3 is an electric control theory block diagram of the present invention.
Fig. 4 is the principle of equivalence block diagram of Fig. 3.
Fig. 5 is that ratio assist controller of the present invention directly links to each other with controller and do not connect the functional block diagram of speed governing handle.
Fig. 6 is a power-assisted of the present invention than being in 1 the force aid system, the corresponding relation figure between speed and people's activity of force, power of motor and the gross horsepower.
Fig. 7 is a power-assisted of the present invention than being in 2.5 the force aid system, the corresponding relation figure between speed and people's activity of force, power of motor and the gross horsepower.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
A kind of speed control formula ratio assisted electric bicycle control system, link to each other with the former controller 4 of battery-driven car, the electrically operated output of former controller 4 controls of battery-driven car, battery-driven car has the all-electric and electronic two kinds of mode of operations of manpower power-assist that add, it is characterized in that on the front-wheel of Electrical Bicycle and axis, speed sensor 1 being installed, 2, speed sensor on front-wheel and the axis is sent into the speed signal that records in the ratio assist controller 3 respectively, ratio assist controller 3 with the speed signal analytic transformation after to former controller 4 output voltage control signals of battery-driven car, the horsepower output of former controller 4 control motors.
The present invention has made full use of the control structure of existing all-electric battery-driven car, do not change the structure of existing all-electric battery-driven car, as long as a speed sensor 1 respectively is installed on front-wheel and axis, 2, again by circuit with in the signal transmission ratios assist controller 3, and that ratio assist controller 3 has a volume is little, can directly connect with the former controller 4 of existing battery-driven car, also can link to each other 4 with speed adjusting handle for electric vehicle and the former controller of battery-driven car, the speed adjusting handle for electric vehicle action, then be all-electric mode of operation, ratio assist controller 3 of the present invention outputs to the speed-regulating handle bar voltage that receives in the former controller of battery-driven car.
Micro controller system is the core component of ratio assist controller 3 of the present invention, it can realize the conversion of conversion, analysis and output control signal to incoming signal under the control of program, realization is to the control of former controller 4 input voltages of battery-driven car, and then control motor horsepower output.The EM78P458 type that micro controller system can adopt Taiwan ELAN company to produce, its inside have register (SDRAM), 8 multi-channel A convs, 2 pulse-width modulators (PWM) and 6 interrupt sources in 4K * 13 a disposable ROM, 96 * 8 bit slices.
When the speed of front-wheel or axis is zero, then cut off motor power; When the ratio of the speed of front-wheel and axis speed during greater than the ratio of teeth number of sprocket and the flywheel number of teeth, then cut off motor power, also cut off the electricity supply, electric power and manpower are in the power-assisted ratio while drive motor of setting under the normal riding condition, the ratio assist controller is according to the horsepower output of measured speed control motor, thus the final speed of controlling bicycle again.
The kernel control module of ratio assist controller 3---micro controller system can with the shared same micro controller system of the former controller of battery-driven car, to save cost and to reduce the volume of control system; Ratio assist controller 3 also can be installed on the same control circuit board with the former controller 4 of battery-driven car, and is installed in the same control capsule, can reduce the volume of control system, reduces the circuit transmission loss, improves reliability.
In conjunction with a concrete example principle of work of the present invention is described further down.
The maximum speed of Regular Bicycle is 25～30km/h, and is generally about 15km/h in the speed of city bicycle, and the power-assisted ratio was generally 1: 1 or 2.5: 1; The power-assisted ratio can be made as continuously adjustable, also can be made as stepping and regulate, and the power-assisted ratiometric is selected and can be set by the associated button on the control panel, and this is very simple and convenient on electric.The power-assisted ratiometric is set and can be set before battery-driven car starts, and also can regulate in operational process.Be that example is illustrated now with 1: 1 ratio power-assisted of 0～15km/h speed interval.
Suppose that existing vehicle speed is 12km/h, under reference conditions, the car load average current is 4.0A when all-electric, and wherein no-load current is 0.4A, and actual acting current of electric is 3.6A.Under 1: 1 power-assisted situation, current of electric should be 1.8A, and remaining 1.8A electric current acting then should be provided by manpower, as shown in Figure 6.If the corresponding power of manpower out of reach, speed will reduce, and reaches a state of equilibrium that can at the uniform velocity advance at last.Certain different automobile types, the resulting electric current of different motors are all different, but for a concrete vehicle, then can detect with experimental technique.Remaining has carried out the software correction with mathematical method exactly.Major drive this moment is a manpower, the rider wishes as soon as possible will reinforcing to pedal and steps on, and this moment, momentary velocity will improve, and the speed one fast corresponding electric current that requires will increase, the horsepower output of motor will increase, and detects by software cycles and can guarantee that this process goes on again and again.From Fig. 6, Fig. 7 as can be seen, the relation of electric current and speed is a kind of continuous function relation, and electric current and voltage are a fixing functional relation, control voltage is controllable current, so can not occur that other power-assisted ratio control system often occurs in case do not step on foot-operated will the outage, one steps on and can send a telegram here, and off and on, occurs the phenomenon of a bad sensation of dashing in the process of riding.What obtain is natural and smooth, balmy and bracing, arbitrary effect.The rider utilizes the present invention can accelerate to 20km/h hardly arduously, slow down and step on speed, just can underspeed reposefully, can reach state of equilibrium at any speed point, in addition, the safety measure of the former controller of original battery-driven car is not subjected to any influence of the present invention as functions such as brake outages, so the safety performance of car load can well be ensured.
Claims (2)
1, a kind of speed control formula ratio assisted electric bicycle control system, link to each other with the former controller of battery-driven car, can judge whether the bicyclist is firmly foot-operated, and according to the horsepower output of the power-assisted proportional control motor of setting, it is characterized in that the ratio assist controller analyzes the speed signal that the speed sensor on front-wheel and the axis records, judge whether the bicyclist is firmly foot-operated, press the horsepower output of design-calculated power-assisted proportional control motor then.
2, speed control formula ratio assisted electric bicycle control system according to claim 1 is characterized in that described power-assisted ratio is 1: 1 and 1: 2.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031582664A CN100333965C (en) | 2003-09-19 | 2003-09-19 | Speed controlled proportional assisted electric bicycle control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031582664A CN100333965C (en) | 2003-09-19 | 2003-09-19 | Speed controlled proportional assisted electric bicycle control system |
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| Publication Number | Publication Date |
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| CN1526604A CN1526604A (en) | 2004-09-08 |
| CN100333965C true CN100333965C (en) | 2007-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031582664A Expired - Fee Related CN100333965C (en) | 2003-09-19 | 2003-09-19 | Speed controlled proportional assisted electric bicycle control system |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101508252B (en) * | 2009-01-21 | 2012-07-04 | 深圳信隆实业股份有限公司 | Power assisted bicycle power control system and double-control electric power assisted bicycle |
| CN102514676A (en) * | 2011-12-29 | 2012-06-27 | 苏州博菲利电动科技有限公司 | Electric bicycle transmission system with speed sensing device |
| CN102555836B (en) * | 2012-01-17 | 2014-09-10 | 广东高标电子科技有限公司 | Electric bicycle and starting and speed-adjusting method thereof |
| CN106741537A (en) * | 2016-12-13 | 2017-05-31 | 芜湖纯元光电设备技术有限公司 | A kind of vehicle security protection system |
| CN106428338A (en) * | 2016-12-13 | 2017-02-22 | 芜湖纯元光电设备技术有限公司 | Safety bicycle with rotation speed detection device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2303787Y (en) * | 1997-01-31 | 1999-01-13 | 刘越生 | Electric boosted effort-saved bicycle |
| CN1235113A (en) * | 1998-05-07 | 1999-11-17 | 赖振辉 | Auxiliary device for electric powered bicycle |
| CN1247144A (en) * | 1998-07-07 | 2000-03-15 | 李书贤 | Booster for electrically boosted bicycle |
-
2003
- 2003-09-19 CN CNB031582664A patent/CN100333965C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2303787Y (en) * | 1997-01-31 | 1999-01-13 | 刘越生 | Electric boosted effort-saved bicycle |
| CN1235113A (en) * | 1998-05-07 | 1999-11-17 | 赖振辉 | Auxiliary device for electric powered bicycle |
| CN1247144A (en) * | 1998-07-07 | 2000-03-15 | 李书贤 | Booster for electrically boosted bicycle |
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| CN1526604A (en) | 2004-09-08 |
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