CN103605363B - Four-wheel micro computer Mus sprint controller based on ARM9 - Google Patents
Four-wheel micro computer Mus sprint controller based on ARM9 Download PDFInfo
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- CN103605363B CN103605363B CN201310418328.0A CN201310418328A CN103605363B CN 103605363 B CN103605363 B CN 103605363B CN 201310418328 A CN201310418328 A CN 201310418328A CN 103605363 B CN103605363 B CN 103605363B
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Abstract
The invention discloses a kind of four-wheel micro computer Mus sprint controller based on ARM9, including: main control unit, a L298N chip, the 2nd L298N chip, the first moving cell, the second moving cell, the 3rd moving cell, the 4th moving cell and power supply, described power supply is electrically connected with described main control unit, described main control unit is ARM9 processor, and described ARM9 processor is electrically connected with a described L298N chip, the 2nd L298N chip.By the way, present invention four-wheel based on ARM9 micro computer Mus sprint controller has the advantages such as jamming rate by mistake is low, control simply, good stability, dynamic property are good, capacity of resisting disturbance is strong, system debug is simple, has market prospect widely popularizing of micro computer Mus sprint controller.
Description
Technical field
The present invention relates to robot field, particularly relate to a kind of four-wheel micro computer Mus sprint controller based on ARM9.
Background technology
Micro computer Mus is a kind of Intelligent walking robot using embedded microcontroller, sensor and electromechanical movement parts to constitute, the most contest nearly 30 years, the industrial robot of multiple reality can be converted into by its principle, just introduce domestic in recent years, and be increasingly becoming an emerging sports.Micro computer Mus can in different " labyrinths " automatic Memory and select path, use corresponding algorithm, arrive set destination rapidly.One outstanding micro computer Mus must possess good perception, has good locomotor activity, outstanding intelligent algorithm.One complete micro computer Mus includes sensor, motor, algorithm and microprocessor, and wherein microprocessor is the core of micro computer Mus, controls and judges to be confident of, including wall information, positional information, angle information and motor status information etc..
Existing microprocessor is generally adopted by single-chip microcomputer.Owing to the unit of domestic this robot of research and development is less, relative R & D Level is relatively backward, and the micro computer Mus of research and development finds to there is a lot of safety problem at long-play, as follows:
(1) eyes as micro computer Mus use ultrasound wave or general infrared sensor so that micro computer Mus when fast sprint to around the judgement in labyrinth there is certain erroneous judgement so that micro computer easily knocks the barricade in front fast sprint when；
(2) actuator as micro computer Mus uses motor, and the problem being frequently encountered pulse-losing occurs, causes that the memory of spurt position is occurred mistake, can not find the terminal of spurt sometimes；
(3) owing to using motor so that organism fever ratio is more serious, is unfavorable for fast sprint in large complicated labyrinth；
(4) owing to using the algorithm than lower level so that the calculating in optimal labyrinth and the calculating in spurt path have the spurt in the middle of general labyrinth of certain problem typically will spend the time of 15 ~ 30 seconds, and this makes cannot win victory in real contest；
(5) to brake frequently and start due to micro computer Mus during fast sprint, increase the weight of the workload of single-chip microcomputer, Signal Processors cannot meet the requirement of micro computer Mus fast sprint；
(6) relatively use is all that the plug-in components that some volume ratios are bigger makes the volume ratio of micro computer Mus huger, and center of gravity is higher, it is impossible to meet the requirement of fast sprint；
(7) owing to being disturbed by surrounding unstable factor, the interference of some light particularly around, often there is exception in singlechip controller, causes micro computer Mus out of control, and capacity of resisting disturbance is poor；
(8) for the micro computer Mus of differential control, typically require that the control signal of two motor to synchronize, but be difficult to again accomplish for single single-chip microcomputer so that micro computer Mus when sound lunge can in the middle of labyrinth rocking tendency bigger；
(9) owing to being affected by single-chip microcomputer capacity and algorithm, the information in labyrinth is not stored by micro computer Mus, and in time running into power-down conditions, all of information will disappear, and this makes whole spurt process to complete；
(10) due to by single-chip microcomputer capacity impact, existing micro computer Mus is substantially all only two power drive wheels, four-wheel differentia mode is used to travel, system is made to require higher to the servo of two axles, particularly during linear accelerating spurt navigation, requiring that speed to be pursued with acceleration strict consistent, otherwise line navigation will be failed, and the phenomenon causing micro computer Mus to occur hitting wall occurs；
(11) move after four-wheel micro computer Mus system is when accelerating due to center of gravity so that mouse front portion is light, even if micro computer Mus also can be skidded on good road surface, it is possible to cause the phenomenon hitting wall to occur, be unfavorable for the development that high speed micro computer Mus is made a spurt；
(12) if four-wheel micro computer Mus system designs improper inclined before causing center of gravity when normal traveling, the normal pressure born on driving wheel will be caused to reduce, at this moment micro computer Mus system is more prone to skid, and is also easier to wander off, causes navigating unsuccessfully；
(13) if four-wheel micro computer Mus system designs the improper normal pressure difference causing center of gravity lateral deviation two driving wheels will to be caused to bear when normal traveling, when quickly starting, four-wheel skid level is inconsistent, moment deflects away from track, during turning, the wheel that wherein normal pressure is little may skid, and causes cornering difficulties；
(14) owing to using two power wheels to drive, in order to meet the acceleration under complex state and deceleration, the power making single driving motor is bigger, the space not only taken up is bigger, and sometimes cause the phenomenon of " low load with strong power " to occur when some relative requirements energy are relatively low, it is unfavorable for micro computer Mus body miniaturization and the saving of micro computer Mus system energy.
Summary of the invention
The technical problem that present invention mainly solves is to provide a kind of four-wheel micro computer Mus sprint controller based on ARM9, for overcoming single-chip microcomputer can not meet micro computer Mus stability and the requirement of rapidity, give up the single-chip microcomputer mode of operation that domestic micro computer Mus is used, absorbing on the premise of external Dynamic matrix control thought, independent research brand-new control model based on ARM9+L298N.Panel is with ARM9 for processing core, realize the real-time process of two axle direct current generator synchronous servo digital signals, and realize the control logic of the left and right wheels of L298N, realize the Synchronization Control of two spindle motors during micro computer Mus fast sprint, simplify operation, improve efficiency, have market prospect widely popularizing of four-wheel micro computer Mus sprint controller based on ARM9.
nullFor solving above-mentioned technical problem，The present invention provides a kind of four-wheel micro computer Mus sprint controller based on ARM9，Including: main control unit、Oneth L298N chip、2nd L298N chip、First moving cell、Second moving cell、3rd moving cell、4th moving cell and power supply，Described power supply is electrically connected with described main control unit，Described main control unit is ARM9 processor，Described ARM9 processor and a described L298N chip、2nd L298N chip is electrically connected with，A described L298N chip is electrically connected with described first moving cell and the second moving cell，Described 2nd L298N chip is electrically connected with described 3rd moving cell and the 4th moving cell，Described first moving cell、Second moving cell、3rd moving cell、4th moving cell is respectively connected with photoelectric encoder，Described power supply is lithium ion battery.
In a preferred embodiment of the present invention, described first moving cell, the second moving cell, the 3rd moving cell, the 4th moving cell all include motor.
In a preferred embodiment of the present invention, described motor is High-speed DC motor.
In a preferred embodiment of the present invention, described main control unit is also circumscribed with PC control unit, described PC control unit includes that unit, coordinate setting unit and online output unit are read in labyrinth, and described labyrinth is read unit, coordinate setting unit and online output unit and is all electrically connected with described arm processor.
In a preferred embodiment of the present invention, described main control unit is also associated with at least 6 sensors, and described sensor is ultrasonic sensor or infrared ray sensor, is used for sensing and transmit external environmental information.
In a preferred embodiment of the present invention, described motor is also connected with wheel, and the quantity of described wheel is identical with the quantity of described motor.
The invention has the beneficial effects as follows: present invention four-wheel based on ARM9 micro computer Mus sprint controller has the advantages such as jamming rate by mistake is low, control simply, good stability, dynamic property are good, capacity of resisting disturbance is strong, system debug is simple, has market prospect widely popularizing of micro computer Mus sprint controller.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, in describing embodiment below, the required accompanying drawing used is briefly described, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings, wherein:
Fig. 1 is the structural representation of four-wheel micro computer Mus based on ARM9 spurt main control unit one preferred embodiment of the present invention；
Fig. 2 is the schematic diagram of four-wheel micro computer Mus based on ARM9 spurt main control unit one preferred embodiment of the present invention；
Fig. 3 is the flow chart of four-wheel micro computer Mus based on ARM9 spurt main control unit one preferred embodiment of the present invention；
Fig. 4 is the labyrinth schematic diagram of four-wheel micro computer Mus based on ARM9 spurt main control unit one preferred embodiment of the present invention；
Fig. 5 is the two-dimensional representation of four-wheel micro computer Mus one preferred embodiment based on ARM9 of the present invention；
Fig. 6 is the speed curve diagram of four-wheel micro computer Mus based on ARM9 spurt main control unit one preferred embodiment of the present invention；
Fig. 7 is the right-hand rotation spurt schematic diagram of four-wheel micro computer Mus based on ARM9 spurt main control unit one preferred embodiment of the present invention；
Fig. 8 is right-hand rotation and the dash speed time diagram of left-hand rotation of four-wheel micro computer Mus based on ARM9 spurt main control unit one preferred embodiment of the present invention；
Fig. 9 is the left-hand rotation spurt schematic diagram of four-wheel micro computer Mus based on ARM9 spurt main control unit one preferred embodiment of the present invention；
In accompanying drawing, the labelling of each parts is as follows: 1, main control unit, the 2, the oneth L298N chip, the 3, the 2nd L298N chip, the 4, first moving cell, the 5, second moving cell, the 6, the 3rd moving cell, the 7, the 4th moving cell, and 8, power supply.
Detailed description of the invention
Technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, all other embodiments that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
Referring to Fig. 1 to Fig. 8, the embodiment of the present invention includes:
A kind of four-wheel micro computer Mus sprint controller based on ARM9, including: main control unit the 1, the oneth L298N chip the 2, the 2nd L298N chip the 3, first moving cell the 4, second moving cell the 5, the 3rd moving cell the 6, the 4th moving cell 7 and power supply 8.
Described power supply 8 is electrically connected with described main control unit 1, described main control unit 1 is ARM9 processor, described main control unit 1 is ARM9 processor, ARM9 processor uses Jing Ke Cao Neng device structure, have that depositor is many, addressing system simple, bulk transfer data, use the features such as address automatically increases or decreases, compared to ARM7 processor, achieve more than twice in the ability of ARM7 processor here by increasing clock frequency with reducing instruction execution cycle；Described ARM9 processor is electrically connected with described L298N chip the 2, a 2nd L298N chip 3, a described L298N chip 2 is electrically connected with described first moving cell 4 and the second moving cell 5, described 2nd L298N chip 3 is electrically connected with described 3rd moving cell 6 and the 4th moving cell 7, described first moving cell the 4, second moving cell the 5, the 3rd moving cell the 6, the 4th moving cell 7 is respectively connected with photoelectric encoder, and described power supply 8 is lithium ion battery.
Preferably, described first moving cell the 4, second moving cell the 5, the 3rd moving cell the 6, the 4th moving cell 7 all includes motor.
Preferably, described motor is High-speed DC motor.
Preferably, described main control unit 1 is also circumscribed with PC control unit, described PC control unit includes that unit, coordinate setting unit and online output unit are read in labyrinth, and described labyrinth is read unit, coordinate setting unit and online output unit and is all electrically connected with described arm processor.
Preferably, described main control unit 1 is also associated with at least 6 sensors, and described sensor is ultrasonic sensor or infrared ray sensor, is used for sensing and transmit external environmental information.
Preferably, described motor is also connected with wheel, and the quantity of described wheel is identical with the quantity of described motor.
The operation principle of the present invention is:
1) before micro computer Mus does not receives spurt order, it typically can be at starting point coordinate (0,0) the spurt order that controller sends is waited, and recall the optimum labyrinth after having explored, after once receiving spurt order, can start quickly to terminal (7 along starting point, 7), (7,8), (8,7), (8,8) spurt.
2) micro computer Mus is placed on starting point coordinate (0, 0), in order to prevent from misplacing spurt direction after receiving task, the sensor S1 in its front, S6 and the environment in front being judged, determine and enter range of movement either with or without barricade, interrupt requests will be sent to ARM9 (S3C2440A) as there is barricade, ARM9 (S3C2440A) can be to interrupting doing very first time response, then Enable Pin ENA and the ENB work of L298N are forbidden, the motor X of block micro computer Mus, motor Y, motor Z and the PWM drive signal of motor R, it is made to be still in original place, then secondary judges that labyrinth determines front information, prevent information from judging by accident；Enter the range of movement in front without barricade, micro computer Mus will be made a spurt normally.
3) present invention has given up traditional single speed spurt pattern, controls acceleration and the deceleration of micro computer Mus according to the speed of Fig. 6 and time graph, and the area that ladder diagram comprises is the distance of micro computer Mus motion.nullIf not having barricade to enter the range of movement in front micro computer Mus along labyrinth information during fast sprint before Y-axis shows front to have under Z lattice rectilinear coordinates，Micro computer Mus will store its present coordinate (X,Y)，Processor passes to ARM9 (S3C2440A) the location parameter of the Z lattice that travel forward，ARM9 (S3C2440A) is according to this location parameter，Calculate speed parameter and acceleration parameter，Velocity-time ladder diagram under the conditions of being formed now，Owing to speed and the voltage of direct current generator are in direct ratio，Combine the feedback of photoelectric encoder and current sensor according to this ladder diagram figure just to generate and control the PWM ripple of left and right wheels direct current generator，Then ARM9 (S3C2440A) enables forerunner and the two panels driving chip L298N of rear-guard，By adjusting two panels L298N pin OUT1、OUT2 and OUT3、The level of OUT4，Start motor X、Motor Y、Motor Z and motor R，System is made to enter boost phase according to the Velocity-time motion diagram of Fig. 6，Until system arrives sets straight dash speed，And record, by photoelectric encoder, distance S1 that micro computer Mus has run；nullThen ARM9 (S3C2440A) forbids that the driving chip L298N of forerunner enables，System release motor Z and motor R，Micro computer Mus enters rear-guard mode，Motor X and motor Y arrives with the straight dash speed set and specifies position S1+S2，Then system enables the driving chip L298N of forerunner，Make motor X、Motor Y、Motor Z and motor R drives micro computer Mus to reduce speed now with identical acceleration，Target setting S1+S2+S1 is arrived when speed is zero，To update its coordinate is (X,Y+Z)，In order to fast sprint needs，When its forward movement arrives set objective，At Y+Z < on the premise of 15，Judge that its coordinate is (7，7)、(7，8)、(8，7)、(8，8) one of them，Its coordinate is updated if not by continuation，If if, notification controller has been made a spurt target，Then put exploration of making a return voyage and be masked as 1，Spurt is masked as 0，Micro computer Mus prepares the secondary return after spurt and explores，Go to search more excellent maze path；
null4) if reversely labyrinth information show front to have under Z lattice rectilinear coordinates during fast sprint the most forward micro computer Mus along Y-axis there is no the range of movement in barricade entrance front，Micro computer Mus will store its present coordinate (X,Y)，Processor passes to ARM9 (S3C2440A) the location parameter of the Z lattice that travel forward，ARM9 (S3C2440A) is according to this location parameter，Calculate speed parameter and acceleration parameter，Velocity Time ladder diagram under the conditions of being formed now，Owing to speed and the voltage of direct current generator are in direct ratio，Combine the feedback of photoelectric encoder and current sensor according to this ladder diagram figure just to generate and control the PWM ripple of left and right wheels direct current generator，Then ARM9 (S3C2440A) enables forerunner and the two panels driving chip L298N of rear-guard，By adjusting two panels L298N pin OUT1、OUT2 and OUT3、The level of OUT4，Start motor X、Motor Y、Motor Z and motor R，System is made to enter boost phase，Until system arrives sets straight dash speed，And record, by photoelectric encoder, distance S1 that micro computer Mus has run；nullThen ARM9 (S3C2440A) forbids that the driving chip L298N of forerunner enables，System release motor Z and motor R，Micro computer Mus enters rear-guard mode，Motor X and motor Y arrives with the straight dash speed set and specifies position S1+S2，Then system enables the driving chip L298N of forerunner，Make motor X、Motor Y、Motor Z and motor R drives micro computer Mus to reduce speed now with identical acceleration，Target setting S1+S2+S1 is arrived when speed is zero，To update its coordinate is (X,Y-Z)，In order to fast sprint needs，When its forward movement arrives set objective，At Y-Z < on the premise of 15，Judge that its coordinate is (7，7)、(7，8)、(8，7)、(8，8) one of them，Its coordinate is updated if not by continuation，If if, notification controller has been made a spurt target，Then put exploration of making a return voyage and be masked as 1，Spurt is masked as 0，Micro computer Mus prepares the secondary return after spurt and explores，Go to search more excellent maze path；
null5) if having barricade to enter the range of movement in front micro computer Mus in Y-axis forward movement，And when now in the information of labyrinth, there is barricade left，Micro computer Mus will store now coordinate (X,Y)，Subsequently into the curvilinear motion track shown in Fig. 8，When right spurt is turned，Controller speed now and from the Distance Transmission of central point A to ARM9 (S3C2440A)，ARM9 (S3C2440A) is according to current speed and spurt time requirement the feedback enable forerunner combining photoelectric encoder and current sensor and the driving chip L298N of rear-guard，Make motor X、Motor Y、Motor Z slows down with identical acceleration with motor R，When micro computer Mus arrives labyrinth central point，Sensor reference value R90_FrontWallRef starts working，Prevent external interference from starting to do error compensation，Ensure that micro computer Mus is in current labyrinth side center of a lattice，Now motor X、Motor Y、Motor Z and motor R speed reduce to 0，ARM9 (S3C2440A) is by adjusting two panels L298N pin OUT1、OUT2 and OUT3、The level of OUT4，Left side wheels is made to rotate forward，Right-hand wheel inverts，Onboard gyroscope makes micro computer Mus flicker 90 degree，Then accelerate with current speed，As motor X、Motor Y、Motor Z and motor R arrives when setting straight dash speed，Forbid that the driving chip L298N of forerunner enables，Release motor Z and motor R,Motor X is made to go out labyrinth with motor Y with identical dash speed.Now will update its coordinate is (X+1, Y), at X+1 < on the premise of 15, judge whether its coordinate (7,7), (7,8), (8,7), (8,8) one of them, update its coordinate if not by continuation, if if notification controller made a spurt target, then put exploration of making a return voyage and be masked as 1, spurt is masked as 0, and micro computer Mus prepares the secondary return after spurt and explores, and goes to search more excellent maze path；
null6) if having labyrinth retaining wall to enter the range of movement in front micro computer Mus in Y-axis forward movement，And when now in the information of labyrinth, there is barricade right，Micro computer Mus will store now coordinate (X,Y)，Subsequently into the curvilinear motion track shown in Fig. 7，When left spurt is turned，Controller speed now and from the Distance Transmission of central point A to ARM9 (S3C2440A)，The feedback that ARM9 (S3C2440A) combines photoelectric encoder and current sensor according to current speed and spurt time requirement enables forerunner and the driving chip L298N of rear-guard，Make motor X、Motor Y、Motor Z slows down with identical acceleration with motor R，When micro computer Mus arrives labyrinth central point，Sensor reference value L90_FrontWallRef starts working，Prevent external interference from starting to do error compensation，Ensure that micro computer Mus is in current labyrinth side center of a lattice，Now motor X、Motor Y、Motor Z and motor R speed reduce to 0，ARM9 (S3C2440A) is by adjusting two panels L298N pin OUT1、OUT2 and OUT3、The level of OUT4，Right-hand wheel is made to rotate forward，Left side wheels inverts，Onboard gyroscope makes micro computer Mus flicker 90 degree，Then accelerate with current speed，As motor X、Motor Y、Motor Z and motor R arrives when setting straight dash speed，Forbid that the driving chip L298N of forerunner enables，Release motor Z and motor R,Motor X is made to go out labyrinth with motor Y with identical dash speed.Now will update its coordinate is (X-1, Y), at X-1 < on the premise of 15, judge whether its coordinate (7,7), (7,8), (8,7), (8,8) one of them, update its coordinate if not by continuation, if if notification controller made a spurt target, then put exploration of making a return voyage and be masked as 1, spurt is masked as 0, and micro computer Mus prepares the secondary return after spurt and explores, and goes to search more excellent maze path；
7) (7 are arrived when the spurt of micro computer Mus, 7), (7,8), (8,7), (8,8) return after spurt can be prepared after and explore to search more excellent path, controller can recall the labyrinth information that it is the most stored, then calculates other optimal path that may be present, and then return initially enters wherein think optimum one.
null8) in order to realize micro computer Mus fast sprint coordinate computing function accurately，Sensor S2 about micro computer Mus、S3 and S4、Labyrinth retaining wall and the pillar of surrounding can be detected in the moment by S5，If S2、S3 or S4、S5 finds that sensor signal there occurs transition，Then explanation micro computer Mus enters the interface point of labyrinth retaining wall and pillar，Now side sensor S2 or S5 can this moment of accurately detecting，When transition occurs again，Illustrate that mouse has begun to leave current labyrinth grid，ARM9(S3C2440A) can carry out calculating and compensating according to sensor feedback information according to the distance that micro computer Mus currently runs，The present invention is in High-speed DC motor X-axis、Y-axis、The photoelectric encoder of 512 lines is added on motor Z and motor R，Owing to precision is higher，The coordinate making micro computer Mus calculates and does not haves mistake，Ensure that the asking property of standard of micro computer Mus fast sprint labyrinth information.
9) when micro computer Mus enters labyrinth return exploration, sensor S1, S2, S3, S4, S5, S6 of its navigation are by work, and give ARM9 (S3C2440A) the photosignal reflected, present position, present labyrinth is determined after ARM9 (S3C2440A) computing, then according to current labyrinth generation PWM ripple and sent control signal to L298N by ARM9 (S3C2440A): if entering the region searched for will strengthen the dutycycle of PWM ripple, make micro computer Mus fast forward through, reduce the time of labyrinth search；If unknown return area then uses normal speed search for, and the moment updates its coordinate (X, Y), and judges its coordinate whether (0,0), if if put exploration of making a return voyage and be masked as 0, micro computer Mus enters the sprint stage, and juxtaposition is made a spurt and is masked as 1.
10) in micro computer Mus motor process, if system occurs in that interference, electric current can be compensated for by ARM9 (S3C2440A) according to current state, quickly adjusts the pid parameter of electric current loop, the system fast and stable of making gets off, and prevents from disturbing the impact on system during sound lunge.
11) during micro computer Mus fast sprint; the instantaneous power that battery provides is certain; under conditions of dash speed is certain; when acceleration is the biggest; the moment needed is the biggest, and the electric current now needing battery to provide is the biggest, in order to protect battery; present invention adds hardware protection, otherwise by grievous injury battery.
12) in order to reduce the interference that micro computer Mus is made a spurt by light source, present invention adds photoelectric sensor S8, the abnormal light source of surrounding can be read out by this sensor in the micro computer Mus sprint stage, and automatically give controller and do real-Time Compensation, eliminates the external light source interference to spurt.
null13) (7 are arrived when micro computer completes whole spurt process，7)、(7，8)、(8，7)、(8，8)，Micro computer Mus can be put exploration and is masked as 1，Micro computer Mus return is explored and is returned to starting point (0，0)，ARM9(S3C2440A) micro computer starting point central point is stopped the level output controlling two panels L298N，Then the OUT1 of L298N is readjusted、OUT2、The level of OUT3 and OUT4，Make the motor of both sides: motor X、Motor Z and motor Y、Motor R moves in a reverse direction，And under the control of gyroscope，Rotate in place 180 degree，Then stop 1 second，Secondary transfers labyrinth information，Then the optimum spurt path after optimizing labyrinth information is calculated according to algorithm，Then put spurt and be masked as 1，System enters the secondary fast sprint stage.Then according to spurt----explore---spurt, complete spurt repeatedly, to reach the purpose of fast sprint.
Present invention four-wheel based on ARM9 micro computer Mus sprint controller provides the benefit that:
(1) in motor process, take into full account battery effect in this system, all the running status of micro computer Mus is being monitored and computing based on the ARM9 controller moment, avoid the generation of big electric current, and the SOC of moment display lithium ion battery, be conducive to the energy state of electrolytic cell, owing to the present invention uses permanent magnet DC motor, the acceleration of motor and the electric current of motor are certain proportion relation, so when battery SOC is relatively low, the requirement of energy during in order to ensure to make a spurt, battery can be changed before spurt premise, thus decrease battery because the too high mistake to sound lunge of discharge current is disturbed；
(2) stability time in order to fully ensure that micro computer Mus system fast sprint and driveability, the present invention uses four-wheel drive structure, pre-driver is consistent with the four of rearmounted driving powers of motor, owing to using four-wheel drive technology, micro computer Mus front and back wheel is the most dynamic, can by ground, labyrinth different with ambient conditions and before and after demand torque is distributed in by different proportion on all of wheel, to improve the fast running ability of micro computer Mus；
(3) time sharing is realized as required.When normal fast sprint, micro computer Mus typically can use release front-wheel, uses the mode of rear wheel drive；And once run into the situation that road dust is more or driving wheel skids, ARM9 can automatically detect and distribute a part to two, front front-wheel by micro computer Mus demand torque immediately, naturally four-wheel drive state it is switched to, adhesive force when enhancing micro computer Mus fast sprint and handling；
(4) owing to using four-wheel drive mode, when micro computer Mus needs to accelerate spurt, power is evenly distributed to four motors, once a power wheel leaves ground, ARM9 can redistribute moment of torsion, more moment of torsion is distributed on non-slip driving wheel, makes system depart from rapidly slipping state, come back to four axle dynamic equilibrium states so that micro computer Mus keeps higher ability to sprint；
(5) when the spurt of micro computer Mus turns to, in order to ensure the stability rotated, four-wheel is used to realize turning with control: when needing to stop, ARM9 is evenly distributed to four motors power, four motors use identical acceleration to carry out synchronizing to slow down, and make micro computer Mus accurate stopping；Then under the control of gyroscope, accurately rotate the angle needed, be then accelerated, when giving it the gun, ARM9 is evenly distributed to four motors power, four motors use identical acceleration to carry out sync plus white, and when arriving setting speed, release front-wheel uses rear wheel drive；The requirement being combined turning time by ARM9 controls direct current generator X, motor Y, motor Z and motor R according to the different four road PWM that generate of track, completes the synchronization Servo Control of four axle DC servomechanisms；
(6) if four-wheel micro computer Mus system designs improper inclined before causing center of gravity when normal traveling, reduce causing the normal pressure born on rear side driving wheel, ARM9 can automatically adjust the power distribution of rear side when it is made a spurt, make system be in a kind of new poised state, prevent from skidding during the most secondary spurt of micro computer Mus；
(7) if four-wheel micro computer Mus system designs when normal traveling and improper causes center of gravity lateral deviation, reduce causing the normal pressure born in a side drive wheel, ARM9 can automatically adjust the power distribution of this side when it is made a spurt, make system be in a kind of new poised state, prevent from skidding during the most secondary spurt of micro computer Mus；
(8) by the SERVO CONTROL of four direct current generators during ARM9 process micro computer Mus sound lunge, make to control fairly simple, substantially increase arithmetic speed, solve scm software and run slower bottleneck, shorten the construction cycle short, and program transportability ability is strong；
(9) present invention realizes full SMD components material substantially, it is achieved that veneer controls, and not only reduces the volume of micro computer Mus, and also reduces its center of gravity, is conducive to its fast sprint；
(10) independence of the velocity magnitude and direction that present invention achieves micro computer Mus controls, and is conducive to improving stability and the dynamic property of micro computer Mus dolly；
(11) in order to improve arithmetic speed and precision, this micro computer Mus have employed and uses most infrared transmitter OPE5594A and infrared remote receiver TSL262 in the world so that operational precision is greatly improved, and is conducive to when improving sound lunge finding out above labyrinth retaining wall；
(12) reading and spurt algorithm owing to this controller uses ARM9 to process labyrinth, effectively prevent " race flies " of program, capacity of resisting disturbance is greatly enhanced；
(13) use L298N to drive four axle direct current generators due to this controller, considerably reduce the space shared by drive circuit, and improve efficiency and the stability of system；
(14) by PWM modulation signal during ARM9 output spurt and direction signal, then directly drive direct current generator by the Enable Pin of L298N, not only alleviate the burden of ARM9, and simplify interface circuit so that the debugging of system is simple；
(15) during micro computer Mus fast sprint, controller can carry out on-line identification and utilize motor torque to compensate with the relation of electric current the torque of direct current generator, decreases the motor torque shake impact on micro computer Mus fast sprint；
(16) due to four wheel speeds and the directionally independent control of micro computer Mus so that micro computer Mus is easier to realize the rotation of curvilinear path；
(17) owing to having storage function, this makes micro computer Mus can transfer the labyrinth information explored easily, can optimize the path of secondary spurt, reduces the spurt time.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the invention content to be made or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical field, the most in like manner it is included in the scope of patent protection of the present invention.
Claims (4)
- null1. a four-wheel micro computer Mus sprint controller based on ARM9，It is characterized in that，Including: main control unit、Oneth L298N chip、2nd L298N chip、First moving cell、Second moving cell、3rd moving cell、4th moving cell and power supply，Described power supply is electrically connected with described main control unit，Described main control unit is ARM9 processor，Described ARM9 processor and a described L298N chip、2nd L298N chip is electrically connected with，A described L298N chip is electrically connected with described first moving cell and the second moving cell，Described 2nd L298N chip is electrically connected with described 3rd moving cell and the 4th moving cell，Described first moving cell、Second moving cell、3rd moving cell、4th moving cell is respectively connected with photoelectric encoder，Described power supply is lithium ion battery，The operation principle of described four-wheel micro computer Mus sprint controller based on ARM9 is:1) before micro computer Mus does not receives spurt order, it typically can be at starting point coordinate (0,0) the spurt order that controller sends is waited, and recall the optimum labyrinth after having explored, after once receiving spurt order, can start quickly to terminal (7 along starting point, 7), (7,8), (8,7), (8,8) spurt；2) micro computer Mus is placed on starting point coordinate (0,0), in order to prevent from misplacing spurt direction after receiving task, sensor S1, the S6 in its front and the environment in front can be judged, determine and enter range of movement either with or without barricade, interrupt requests will be sent to ARM9 as there is barricade, ARM9 can be to interrupting doing very first time response, then Enable Pin ENA and the ENB work of L298N are forbidden, the block motor X of micro computer Mus, motor Y, motor Z and the PWM drive signal of motor R, making it be still in original place, then secondary judges that labyrinth determines front information, prevents information from judging by accident；Enter the range of movement in front without barricade, micro computer Mus will be made a spurt normally；null3) if not having barricade to enter the range of movement in front micro computer Mus along labyrinth information during fast sprint before Y-axis shows front to have under Z lattice rectilinear coordinates，Micro computer Mus will store its present coordinate (X,Y)，Processor passes to ARM9 the location parameter of the Z lattice that travel forward，ARM9 is according to this location parameter，Calculate speed parameter and acceleration parameter，Velocity-time ladder diagram under the conditions of being formed now，Owing to speed and the voltage of direct current generator are in direct ratio，Combine the feedback of photoelectric encoder and current sensor according to this ladder diagram just to generate and control the PWM ripple of left and right wheels direct current generator，Then ARM9 enables forerunner and the two panels driving chip L298N of rear-guard，By adjusting two panels L298N pin OUT1、OUT2 and OUT3、The level of OUT4，Start motor X、Motor Y、Motor Z and motor R，System is made to enter boost phase according to default Velocity-time motion diagram，Until system arrives sets straight dash speed，And record, by photoelectric encoder, distance S1 that micro computer Mus has run；nullThen ARM9 forbids that the driving chip L298N of forerunner enables，System release motor Z and motor R，Micro computer Mus enters rear-guard mode，Motor X and motor Y arrives with the straight dash speed set and specifies position S1+S2，Then system enables the driving chip L298N of forerunner，Make motor X、Motor Y、Motor Z and motor R drives micro computer Mus to reduce speed now with identical acceleration，Target setting S1+S2+S1 is arrived when speed is zero，To update its coordinate is (X,Y+Z)，In order to fast sprint needs，When its forward movement arrives set objective，At Y+Z < on the premise of 15，Judge that its coordinate is (7，7)、(7，8)、(8，7)、(8，8) one of them，Its coordinate is updated if not by continuation，If if, notification controller has been made a spurt target，Then put exploration of making a return voyage and be masked as 1，Spurt is masked as 0，Micro computer Mus prepares the secondary return after spurt and explores，Go to search more excellent maze path；null4) if reversely labyrinth information show front to have under Z lattice rectilinear coordinates during fast sprint the most forward micro computer Mus along Y-axis there is no the range of movement in barricade entrance front，Micro computer Mus will store its present coordinate (X,Y)，Processor passes to ARM9 the location parameter of the Z lattice that travel forward，ARM9 is according to this location parameter，Calculate speed parameter and acceleration parameter，Velocity Time ladder diagram under the conditions of being formed now，Owing to speed and the voltage of direct current generator are in direct ratio，Combine the feedback of photoelectric encoder and current sensor according to this ladder diagram just to generate and control the PWM ripple of left and right wheels direct current generator，Then ARM9 enables forerunner and the two panels driving chip L298N of rear-guard，By adjusting two panels L298N pin OUT1、OUT2 and OUT3、The level of OUT4，Start motor X、Motor Y、Motor Z and motor R，System is made to enter boost phase，Until system arrives sets straight dash speed，And record, by photoelectric encoder, distance S1 that micro computer Mus has run；nullThen ARM9 forbids that the driving chip L298N of forerunner enables，System release motor Z and motor R，Micro computer Mus enters rear-guard mode，Motor X and motor Y arrives with the straight dash speed set and specifies position S1+S2，Then system enables the driving chip L298N of forerunner，Make motor X、Motor Y、Motor Z and motor R drives micro computer Mus to reduce speed now with identical acceleration，Target setting S1+S2+S1 is arrived when speed is zero，To update its coordinate is (X,Y-Z)，In order to fast sprint needs，When its forward movement arrives set objective，At Y-Z < on the premise of 15，Judge that its coordinate is (7，7)、(7，8)、(8，7)、(8，8) one of them，Its coordinate is updated if not by continuation，If if, notification controller has been made a spurt target，Then put exploration of making a return voyage and be masked as 1，Spurt is masked as 0，Micro computer Mus prepares the secondary return after spurt and explores，Go to search more excellent maze path；null5) if having barricade to enter the range of movement in front micro computer Mus in Y-axis forward movement，And when now in the information of labyrinth, there is barricade left，Micro computer Mus will store now coordinate (X,Y)，Subsequently into default curvilinear motion track，When right spurt is turned，Controller speed now and from the Distance Transmission of central point A to ARM9，ARM9 is according to current speed and spurt time requirement the feedback enable forerunner combining photoelectric encoder and current sensor and the driving chip L298N of rear-guard，Make motor X、Motor Y、Motor Z slows down with identical acceleration with motor R，When micro computer Mus arrives labyrinth central point，Sensor reference value R90_FrontWallRef starts working，Prevent external interference from starting to do error compensation，Ensure that micro computer Mus is in current labyrinth side center of a lattice，Now motor X、Motor Y、Motor Z and motor R speed reduce to 0，ARM9 is by adjusting two panels L298N pin OUT1、OUT2 and OUT3、The level of OUT4，Left side wheels is made to rotate forward，Right-hand wheel inverts，Onboard gyroscope makes micro computer Mus flicker 90 degree，Then accelerate with current speed，As motor X、Motor Y、Motor Z and motor R arrives when setting straight dash speed，Forbid that the driving chip L298N of forerunner enables，Release motor Z and motor R,Motor X is made to go out labyrinth with motor Y with identical dash speed，Now will update its coordinate is (X+1,Y)，At X+1 < on the premise of 15，Judge that its coordinate is (7，7)、(7，8)、(8，7)、(8，8) one of them，Its coordinate is updated if not by continuation，If if, notification controller has been made a spurt target，Then put exploration of making a return voyage and be masked as 1，Spurt is masked as 0，Micro computer Mus prepares the secondary return after spurt and explores，Go to search more excellent maze path；null6) if having labyrinth retaining wall to enter the range of movement in front micro computer Mus in Y-axis forward movement，And when now in the information of labyrinth, there is barricade right，Micro computer Mus will store now coordinate (X,Y)，Subsequently into default curvilinear motion track，When left spurt is turned，Controller speed now and from the Distance Transmission of central point A to ARM9，The feedback that ARM9 combines photoelectric encoder and current sensor according to current speed and spurt time requirement enables forerunner and the driving chip L298N of rear-guard，Make motor X、Motor Y、Motor Z slows down with identical acceleration with motor R，When micro computer Mus arrives labyrinth central point，Sensor reference value L90_FrontWallRef starts working，Prevent external interference from starting to do error compensation，Ensure that micro computer Mus is in current labyrinth side center of a lattice，Now motor X、Motor Y、Motor Z and motor R speed reduce to 0，ARM9 is by adjusting two panels L298N pin OUT1、OUT2 and OUT3、The level of OUT4，Right-hand wheel is made to rotate forward，Left side wheels inverts，Onboard gyroscope makes micro computer Mus flicker 90 degree，Then accelerate with current speed，As motor X、Motor Y、Motor Z and motor R arrives when setting straight dash speed，Forbid that the driving chip L298N of forerunner enables，Release motor Z and motor R,Motor X is made to go out labyrinth with motor Y with identical dash speed，Now will update its coordinate is (X-1,Y)，At X-1 < on the premise of 15，Judge that its coordinate is (7，7)、(7，8)、(8，7)、(8，8) one of them，Its coordinate is updated if not by continuation，If if, notification controller has been made a spurt target，Then put exploration of making a return voyage and be masked as 1，Spurt is masked as 0，Micro computer Mus prepares the secondary return after spurt and explores，Go to search more excellent maze path；7) (7 are arrived when the spurt of micro computer Mus, 7), (7,8), (8,7), (8,8) return after spurt can be prepared after and explore to search more excellent path, controller can recall the labyrinth information that it is the most stored, then calculates other optimal path that may be present, and then return initially enters wherein think optimum one；null8) in order to realize micro computer Mus fast sprint coordinate computing function accurately，Sensor S2 about micro computer Mus、S3 and S4、Labyrinth retaining wall and the pillar of surrounding can be detected in the moment by S5，If S2、S3 or S4、S5 finds that sensor signal there occurs transition，Then explanation micro computer Mus enters the interface point of labyrinth retaining wall and pillar，Now side sensor S2 or S5 can this moment of accurately detecting，When transition occurs again，Illustrate that mouse has begun to leave current labyrinth grid，ARM9 can carry out calculating and compensating according to sensor feedback information according to the distance that micro computer Mus currently runs，In High-speed DC motor X-axis、Y-axis、The photoelectric encoder of 512 lines is added on motor Z and motor R，Owing to precision is higher，The coordinate making micro computer Mus calculates and does not haves mistake，Ensure that the asking property of standard of micro computer Mus fast sprint labyrinth information；9) when micro computer Mus enters labyrinth return exploration, sensor S1, S2, S3, S4, S5, S6 of its navigation are by work, and give ARM9 the photosignal reflected, present position, present labyrinth is determined after ARM9 computing, then according to current labyrinth generation PWM ripple and sent control signal to L298N by ARM9: if entering the region searched for will strengthen the dutycycle of PWM ripple, make micro computer Mus fast forward through, reduce the time of labyrinth search；If unknown return area then uses normal speed search for, and the moment updates its coordinate (X, Y), and judges its coordinate whether (0,0), if if put exploration of making a return voyage and be masked as 0, micro computer Mus enters the sprint stage, and juxtaposition is made a spurt and is masked as 1；10) in micro computer Mus motor process, if system occurs in that interference, electric current can be compensated for by ARM9 according to current state, quickly adjusts the pid parameter of electric current loop so that system fast and stable gets off, and prevents from disturbing the impact on system during sound lunge；11) during micro computer Mus fast sprint; the instantaneous power that battery provides is certain; under conditions of dash speed is certain; when acceleration is the biggest; the moment needed is the biggest, and the electric current now needing battery to provide is the biggest, in order to protect battery; add hardware protection, otherwise by grievous injury battery；12) in order to reduce the interference that micro computer Mus is made a spurt by light source, add photoelectric sensor S8, the abnormal light source of surrounding can be read out by this sensor in the micro computer Mus sprint stage, and automatically give controller and do real-Time Compensation, eliminates the external light source interference to spurt；null13) (7 are arrived when micro computer completes whole spurt process，7)、(7，8)、(8，7)、(8，8)，Micro computer Mus can be put exploration and is masked as 1，Micro computer Mus return is explored and is returned to starting point (0，0)，The level output controlling two panels L298N is made micro computer starting point central point stop by ARM9，Then the OUT1 of L298N is readjusted、OUT2、The level of OUT3 and OUT4，Make the motor of both sides: motor X、Motor Z and motor Y、Motor R moves in a reverse direction，And under the control of gyroscope，Rotate in place 180 degree，Then stop 1 second，Secondary transfers labyrinth information，Then the optimum spurt path after optimizing labyrinth information is calculated according to algorithm，Then put spurt and be masked as 1，System enters the secondary fast sprint stage，Then according to spurt----explore---spurt，Complete spurt repeatedly，To reach the purpose of fast sprint，Described four-wheel micro computer Mus sprint controller based on ARM9 uses four-wheel drive structure, pre-driver is consistent with the four of rearmounted driving powers of motor, owing to using four-wheel drive technology, micro computer Mus front and back wheel is the most dynamic, can by ground, labyrinth different with ambient conditions and before and after demand torque is distributed in by different proportion on all of wheel, to improve the fast running ability of micro computer Mus；Realizing time sharing as required, when normal fast sprint, micro computer Mus typically can use release front-wheel, uses the mode of rear wheel drive；And once run into the situation that road dust is more or driving wheel skids, ARM9 can automatically detect and distribute a part to two, front front-wheel by micro computer Mus demand torque immediately, naturally four-wheel drive state it is switched to, adhesive force when enhancing micro computer Mus fast sprint and handling；Owing to using four-wheel drive mode, when micro computer Mus needs to accelerate spurt, power is evenly distributed to four motors, once a power wheel leaves ground, ARM9 can redistribute moment of torsion, more moment of torsion is distributed on non-slip driving wheel, makes system depart from rapidly slipping state, come back to four axle dynamic equilibrium states so that micro computer Mus keeps higher ability to sprint；When the spurt of micro computer Mus turns to, in order to ensure the stability rotated, using four-wheel to realize turning with control: when needing to stop, ARM9 is evenly distributed to four motors power, and four motors use identical acceleration to carry out synchronizing to slow down, make micro computer Mus accurate stopping；Then under the control of gyroscope, accurately rotate the angle needed, be then accelerated, when giving it the gun, ARM9 is evenly distributed to four motors power, and four motors use identical acceleration to carry out sync plus white, when arriving setting speed, release front-wheel uses rear wheel driveDescribed first moving cell, the second moving cell, the 3rd moving cell, the 4th moving cell all include motor.
- Four-wheel micro computer Mus sprint controller based on ARM9 the most according to claim 1, it is characterised in that described motor is High-speed DC motor.
- Four-wheel micro computer Mus sprint controller based on ARM9 the most according to claim 1, it is characterized in that, described main control unit is also circumscribed with PC control unit, described PC control unit includes that unit, coordinate setting unit and online output unit are read in labyrinth, and described labyrinth is read unit, coordinate setting unit and online output unit and is all electrically connected with described arm processor.
- Four-wheel micro computer Mus sprint controller based on ARM9 the most according to claim 1, it is characterized in that, described main control unit is also associated with at least 6 sensors, and described sensor is ultrasonic sensor or infrared ray sensor, is used for sensing and transmit external environmental information.
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