CN110065063A - A kind of robot servo motors control method - Google Patents

A kind of robot servo motors control method Download PDF

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Publication number
CN110065063A
CN110065063A CN201810068922.4A CN201810068922A CN110065063A CN 110065063 A CN110065063 A CN 110065063A CN 201810068922 A CN201810068922 A CN 201810068922A CN 110065063 A CN110065063 A CN 110065063A
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CN
China
Prior art keywords
robot
servo motor
tracker
classifier
control method
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810068922.4A
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Chinese (zh)
Inventor
欧卫婷
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Nanjing Robotics Research Institute Co Ltd
Original Assignee
Nanjing Robotics Research Institute Co Ltd
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Publication date
Application filed by Nanjing Robotics Research Institute Co Ltd filed Critical Nanjing Robotics Research Institute Co Ltd
Priority to CN201810068922.4A priority Critical patent/CN110065063A/en
Publication of CN110065063A publication Critical patent/CN110065063A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25JMANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J9/00Programme-controlled manipulators
    • B25J9/16Programme controls
    • B25J9/1656Programme controls characterised by programming, planning systems for manipulators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25JMANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J9/00Programme-controlled manipulators
    • B25J9/16Programme controls
    • B25J9/1679Programme controls characterised by the tasks executed
    • B25J9/1692Calibration of manipulator
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25JMANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J9/00Programme-controlled manipulators
    • B25J9/16Programme controls
    • B25J9/1694Programme controls characterised by use of sensors other than normal servo-feedback from position, speed or acceleration sensors, perception control, multi-sensor controlled systems, sensor fusion
    • B25J9/1697Vision controlled systems
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/30Nc systems
    • G05B2219/40Robotics, robotics mapping to robotics vision
    • G05B2219/40005Vision, analyse image at one station during manipulation at next station

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  • Engineering & Computer Science (AREA)
  • Robotics (AREA)
  • Mechanical Engineering (AREA)
  • Manipulator (AREA)

Abstract

The present invention relates to a kind of robot servo motors control methods, it include: the video of the environment in front of camera shooting robot, each frame image of the video is sent to image analyzing unit by image identification unit, and image analyzing unit calculates the spatial position of robot;The position and direction of gyroscope calculating robot, judge whether the position and direction of robot deviate preset operating path;The current speed of service and acceleration of velocity sensor acquisition robot;According to the spatial position and the departure of the preset path and the current speed of service and acceleration of the robot, the velocity and acceleration that the direction and needs for calculating machine human needs operation are run, servo motor regulating command is generated, servo motor regulating command is sent to servo motor;The servo motor regulating command is generated into corresponding electric voltage frequency, exports the electric voltage frequency by variable frequency drives, servo motor adjusts the revolving speed of servo motor according to the electric voltage frequency.

Description

A kind of robot servo motors control method
Technical field
The present invention relates to robotic technology field more particularly to a kind of robot servo motors control methods.
Background technique
With the continuous development of robot technology, more and more robots start to substitute the various tasks of mankind's execution.Machine Device people is to automatically control being commonly called as machine (Robot), and automatically controlling machine includes all simulation human behaviors or thought and simulation The machinery (such as robot dog, Doraemon etc.) of other biological.Have in the narrow sense to the definition of robot there are also many classification and dispute A little computer programs or even also referred to as robot.In contemporary industry, robot refers to the man-made machine dress that can execute task automatically It sets, to replace or assist human work.Highly emulated robot in ideal is advanced integral traffic control opinion, mechano-electronic, calculating Machine and artificial intelligence, materialogy and bionic product, scientific circles research and develop to this direction at present, but robot is remote Process control is still not perfect, and the application of big data is universal not yet, and also in off-line state, robot is deep for the data acquisition of robot Degree study is also from the storage of native data.
Servo drive system (Servo System) abbreviation servo-system, be it is a kind of using mechanical location or angle as controlling The automatic control system of object allows the robot to realize automatic control.Tool is required using the driving motor in servo-system Have fast response time, accurate positioning, rotary inertia (it is larger using servo motor rotary inertia in electric system, in order to The mechanical parts such as enough and lead screw are connected directly.
Existing robot, due to calculating the influence of error or environment, be easy to cause machine when preset path is walked Device people deviates the path being set to, if robot not being corrected and being adjusted, it is more and more remoter that robot will deviate from preset path.
Therefore, how by controlling robot servo motors, robot ambulation direction and speed are corrected in time, is made Robot is obtained without departing from preset path, becomes those skilled in the art's technical problem urgently to be resolved.
Summary of the invention
The object of the present invention is to provide a kind of robot servo motors control methods, can control excessively to robot servo motors System corrects robot ambulation direction and speed, so that robot is without departing from preset path in time.
To achieve the goals above, the present invention provides a kind of robot servo motors control methods, comprising the following steps:
1), the video of the environment in front of camera shooting robot, image identification unit send out each frame image of the video Image analyzing unit is given, image analyzing unit calculates the spatial position of robot;
2), the position and direction of gyroscope calculating robot, judge whether the position and direction of robot deviate preset operation Path;
3), velocity sensor obtains the current speed of service and acceleration of robot;
If 4), the robot deviates preset path, according to the departure and institute of the spatial position and the preset path The current speed of service and acceleration for stating robot, calculate machine human needs operation direction and the speed that runs of needs and Acceleration generates servo motor regulating command, servo motor regulating command is sent to servo motor;
5) the servo motor regulating command, is generated into corresponding electric voltage frequency, exports the voltage frequency by variable frequency drives Rate, servo motor adjust the revolving speed of servo motor according to the electric voltage frequency.
Preferably, described image recognition unit includes tracker, classifier, integrator, the tracker and classifier The video information of camera shooting is separately connected and received with camera, and the integrator is separately connected tracker and classifier, described Integrator is also connected with training set, and the training set is connect with tracker, classifier respectively.
Preferably, the video flowing of the camera output is input to the tracker and the classifier frame by frame, described whole Clutch analyzes the output of the tracker and the classifier as a result, determining the output result and whether to the training set Sample is added, resetting is responsible for by classifier when the tracker is with losing, the high degree of belief target that the tracker tracks out is also used To update classifier.
Preferably, the camera is Miniature high-definition digital camera.
Preferably, whether the position and direction for judging robot deviate preset operating path, comprising: described in judgement When position and direction are without departing from preset operating path, the node of next operating path interior joint and current location node is calculated Length calculates current run time based on the current speed of service, acceleration and node's length.
Preferably, described image analytical unit includes video converter, and the video converter is for believing analog video Number it is converted into digital video signal.
Preferably, the camera includes camera shooting correcting unit, and the camera shooting correcting unit is to acquired image data Regression analysis is carried out, the data after regression analysis are fitted using polynomial of lower degree.
Robot servo motors control method provided by the invention, by controlling robot servo motors, in time Robot ambulation direction and speed are corrected, so that robot is without departing from preset path.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of specific embodiment of robot servo motors control method provided by the invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application is carried out clearly and completely Description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.Based on this Shen Please in embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts Example, shall fall in the protection scope of this application.
Fig. 1 is please referred to, Fig. 1 is a kind of specific embodiment of robot servo motors control method provided by the invention Flow diagram.
As shown in Figure 1, including the following steps the present invention provides a kind of robot servo motors control method.
The video of environment in front of step 1, camera shooting robot, image identification unit is by each frame of the video Image is sent to image analyzing unit, and image analyzing unit calculates the spatial position of robot;
Step 2, the position and direction of gyroscope calculating robot, judge whether the position and direction of robot deviate preset fortune Walking along the street diameter;
Step 3, velocity sensor obtain the current speed of service and acceleration of robot;
If step 4, the robot deviate preset path, according to the departure of the spatial position and the preset path and The current speed of service and acceleration of the robot, the speed that the direction and needs for calculating machine human needs operation are run And acceleration, servo motor regulating command is generated, servo motor regulating command is sent to servo motor;
The servo motor regulating command is generated corresponding electric voltage frequency by step 5, exports the voltage by variable frequency drives Frequency, servo motor adjust the revolving speed of servo motor according to the electric voltage frequency.
Robot servo motors control method provided by the invention, by controlling robot servo motors, in time Robot ambulation direction and speed are corrected, so that robot is without departing from preset path.
In preferred scheme, described image recognition unit includes tracker, classifier, integrator, the tracker and Classifier and camera are separately connected and receive the video information of camera shooting, and the integrator is separately connected tracker and classification Device, the integrator are also connected with training set, and the training set is connect with tracker, classifier respectively.
In preferred scheme, the video flowing of the camera output is input to the tracker and the classifier frame by frame, The integrator analyzes the output of the tracker and the classifier as a result, determining the output result and whether to described Training set adds sample, is responsible for resetting, the high degree of belief mesh that the tracker tracks out by classifier when the tracker is with losing Mark is also used to update classifier.
In preferred scheme, the camera is Miniature high-definition digital camera.
In preferred scheme, whether the position and direction for judging robot deviate preset operating path, comprising: sentence When breaking the position and direction without departing from preset operating path, next operating path interior joint and current location node are calculated Node's length, current run time is calculated based on the current speed of service, acceleration and node's length.
In preferred scheme, described image analytical unit includes video converter, and the video converter will be for that will simulate Vision signal is converted into digital video signal.
In preferred scheme, the camera includes camera shooting correcting unit, and the camera shooting correcting unit is to collected figure As data progress regression analysis, the data after regression analysis are fitted using polynomial of lower degree.It can by camera shooting correcting unit To substantially reduce the influence of noise in ambient image, available more accurate location information.
Structure, feature and effect of the invention, the above institute are described in detail based on the embodiments shown in the drawings Only presently preferred embodiments of the present invention is stated, but the present invention does not limit the scope of implementation as shown in the drawings, it is all according to structure of the invention Think made change or equivalent example modified to equivalent change, when not going beyond the spirit of the description and the drawings, It should all be within the scope of the present invention.

Claims (7)

1. a kind of robot servo motors control method, which comprises the following steps:
1), the video of the environment in front of camera shooting robot, image identification unit send out each frame image of the video Image analyzing unit is given, image analyzing unit calculates the spatial position of robot;
2), the position and direction of gyroscope calculating robot, judge whether the position and direction of robot deviate preset operation Path;
3), velocity sensor obtains the current speed of service and acceleration of robot;
If 4), the robot deviates preset path, according to the departure and institute of the spatial position and the preset path The current speed of service and acceleration for stating robot, calculate machine human needs operation direction and the speed that runs of needs and Acceleration generates servo motor regulating command, servo motor regulating command is sent to servo motor;
5) the servo motor regulating command, is generated into corresponding electric voltage frequency, exports the voltage frequency by variable frequency drives Rate, servo motor adjust the revolving speed of servo motor according to the electric voltage frequency.
2. robot servo motors control method according to claim 1, which is characterized in that described image recognition unit packet Tracker, classifier, integrator are included, the tracker and classifier and camera are separately connected and receive the video letter of camera shooting Breath, the integrator are separately connected tracker and classifier, and the integrator is also connected with training set, the training set respectively with Tracker, classifier connection.
3. robot servo motors control method according to claim 2, which is characterized in that the view of the camera output Frequency stream is input to the tracker and the classifier frame by frame, and the integrator analyzes the defeated of the tracker and the classifier Out as a result, determining the output result and whether to training set addition sample, by classifier when the tracker is with losing It is responsible for resetting, the high degree of belief target that the tracker tracks out is also used to update classifier.
4. robot servo motors control method according to claim 1, which is characterized in that the camera is miniature High-definition digital camera.
5. robot servo motors control method according to claim 1, which is characterized in that the position of the judgement robot It sets with whether direction deviates preset operating path, comprising: judge the position and direction without departing from preset operating path When, the node's length of next operating path interior joint and current location node is calculated, the current speed of service, acceleration and section are based on Point length computation current run time.
6. robot servo motors control method according to claim 1, which is characterized in that described image analytical unit packet Video converter is included, the video converter is used to analog video signal being converted into digital video signal.
7. robot servo motors control method according to claim 1, which is characterized in that the camera includes camera shooting Correcting unit, the camera shooting correcting unit carry out regression analysis to acquired image data, and the data after regression analysis use Polynomial of lower degree is fitted.
CN201810068922.4A 2018-01-24 2018-01-24 A kind of robot servo motors control method Pending CN110065063A (en)

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Application Number Priority Date Filing Date Title
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CN110065063A true CN110065063A (en) 2019-07-30

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040062038A (en) * 2002-12-31 2004-07-07 엘지전자 주식회사 Gyro offset compensation method of robot cleaner
CN102514011A (en) * 2011-12-28 2012-06-27 王鹏勃 Multi-degree-of-freedom robot controlled by accurate organism sensing and achieving method thereof
CN102581445A (en) * 2012-02-08 2012-07-18 中国科学院自动化研究所 Visual real-time deviation rectifying system and visual real-time deviation rectifying method for robot
CN103335652A (en) * 2013-06-24 2013-10-02 陕西科技大学 Dining room path navigation system and method of robot
CN106569499A (en) * 2016-11-11 2017-04-19 华南智能机器人创新研究院 Robot adaptive control servo driving method and system
CN107030693A (en) * 2016-12-09 2017-08-11 南京理工大学 A kind of hot line robot method for tracking target based on binocular vision

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040062038A (en) * 2002-12-31 2004-07-07 엘지전자 주식회사 Gyro offset compensation method of robot cleaner
CN102514011A (en) * 2011-12-28 2012-06-27 王鹏勃 Multi-degree-of-freedom robot controlled by accurate organism sensing and achieving method thereof
CN102581445A (en) * 2012-02-08 2012-07-18 中国科学院自动化研究所 Visual real-time deviation rectifying system and visual real-time deviation rectifying method for robot
CN103335652A (en) * 2013-06-24 2013-10-02 陕西科技大学 Dining room path navigation system and method of robot
CN106569499A (en) * 2016-11-11 2017-04-19 华南智能机器人创新研究院 Robot adaptive control servo driving method and system
CN107030693A (en) * 2016-12-09 2017-08-11 南京理工大学 A kind of hot line robot method for tracking target based on binocular vision

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Application publication date: 20190730

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