CN109129417A - Cooperation robot system and its implementation based on array of pressure sensors - Google Patents

Cooperation robot system and its implementation based on array of pressure sensors Download PDF

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Publication number
CN109129417A
CN109129417A CN201810913223.5A CN201810913223A CN109129417A CN 109129417 A CN109129417 A CN 109129417A CN 201810913223 A CN201810913223 A CN 201810913223A CN 109129417 A CN109129417 A CN 109129417A
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CN
China
Prior art keywords
cooperation robot
composite force
motion
cooperation
array
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Pending
Application number
CN201810913223.5A
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Chinese (zh)
Inventor
杨雷
李小龙
程强
张启毅
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Shenzhen Intelligent Robot Research Institute
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Shenzhen Intelligent Robot Research Institute
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Priority to CN201810913223.5A priority Critical patent/CN109129417A/en
Publication of CN109129417A publication Critical patent/CN109129417A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25JMANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J9/00Programme-controlled manipulators
    • B25J9/0081Programme-controlled manipulators with master teach-in means
    • 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
    • B25J9/1664Programme controls characterised by programming, planning systems for manipulators characterised by motion, path, trajectory planning
    • 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

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

Abstract

The invention discloses cooperation robot system and its implementation based on array of pressure sensors, system includes teaching machine, controller and cooperation robot, and the cooperation robot includes motion-control module and sensor array;Method includes: the teaching motion profile set according to teaching machine, control cooperation robot motion;According to several torque inductive signals that sensor array obtains, stress point position, the torque size of composite force and the Impact direction of composite force of composite force are calculated;According to the stress point position of composite force, the torque size of composite force and the Impact direction of composite force, motion control instruction is generated;According to motion control instruction, the athletic performance of control cooperation robot.Of the invention cost is relatively low and practicability is high, can be widely applied to field in intelligent robotics.

Description

Cooperation robot system and its implementation based on array of pressure sensors
Technical field
The present invention relates to intelligent robot technology fields, are based especially on the cooperation robot system of array of pressure sensors And its implementation.
Background technique
Currently, non-cooperating robot generally existing two problems in the method for man-machine collaboration security setting in the market: one It is in order to protect personal safety to need that safe grating is arranged, increases equipment and cost input;Second is that it is complicated for operation, it is unskilled The personnel of operation can not operate robot.Cooperation robot is able to solve these problems.The implementation of cooperation robot is main It is that one pressure sensor is installed in joint of mechanical arm, mechanical arm external contact force is converted to by this pressure sensor by power Square, when pulling teaching, when people contacts robot, pressure sensor detects direction and the size of the contact force of people, robotic arm It is moved along the direction of torque with the speed being positively correlated with torque size, to realize dragging teaching;When working properly, when When mechanical arm detects extraneous contact torque, robot stops, and realizes anticollision.But existing this use pressure sensor The cooperation robot of torque is detected when detecting torque, the weight and inertia for needing to exclude mechanical arm itself are to the shadow of testing result It rings, and stress point position cannot be detected, it is not practical enough.
Summary of the invention
In order to solve the above technical problems, it is an object of the invention to: it is high to provide a kind of at low cost and practicability, based on pressure The cooperation robot system and its implementation of force sensor array.
First technical solution adopted by the present invention is:
Cooperation robot system based on array of pressure sensors, including teaching machine, controller and cooperation robot, it is described Cooperation robot includes motion-control module and sensor array;Wherein:
The teaching machine is used to set the motion profile of cooperation robot;
The sensor array is used for several sensor units by being set to cooperation robotic surface to obtain torque Inductive signal;
The controller, multiple torque inductive signals for being obtained according to sensor array, calculate composite force by Force position, the torque size of composite force and the Impact direction of composite force, and according to the stress point position of composite force, composite force Torque size and the Impact direction of composite force generate motion control instruction;
The motion-control module, the motion control instruction for being sent according to controller, the fortune of control cooperation robot Movement.
Further, the teaching machine includes key module, and the key module is used to obtain the input instruction of user, and will Input instruction is sent to controller.
It further, further include warning device, the warning device is used for the control instruction according to controller, carries out alarm and mentions Show.
Further, the cooperation robot further includes locating module, and the locating module is used to obtain cooperation robot Location information.
Second technical solution adopted by the present invention is:
The implementation method of cooperation robot system based on array of pressure sensors, comprising the following steps:
According to the teaching motion profile that teaching machine is set, control cooperation robot motion;
According to several torque inductive signals that sensor array obtains, stress point position, the composite force of composite force are calculated Torque size and composite force Impact direction;
According to the stress point position of composite force, the torque size of composite force and the Impact direction of composite force, movement is generated Control instruction;
According to motion control instruction, the athletic performance of control cooperation robot.
Further, described several torque inductive signals obtained according to sensor array, calculate the stress point of composite force The step for Impact direction of position, the torque size of composite force and composite force, comprising the following steps:
Stress point position, torque size and the Impact direction of multiple sensor units in sensor array are obtained respectively;
According to the torque size and Impact direction of multiple sensor units, the torque direction vector of composite force is calculated;
According to the torque direction vector of composite force, the torque size of composite force is calculated;
According to the stress point position of multiple sensor units, the stress point position of composite force is calculated.
Further, described according to motion control instruction, the step for the athletic performance of control cooperation robot, including it is following Step:
Whether the movement anchor point for judging cooperation robot is taught point, if so, movement anchor point is recorded as teaching Point, and perform the next step rapid;Conversely, the teaching motion profile set according to teaching machine is then returned, control cooperation robot motion The step for;
Judge whether the teaching campaign of cooperation robot terminates, if so, stopping the athletic performance of cooperation robot;Instead The step for it, then pass back through the teaching motion profile of teaching machine setting, controls cooperation robot motion, until cooperation machine The teaching campaign of people terminates.
Further, described according to motion control instruction, the step for the athletic performance of control cooperation robot, further include with Lower step:
Judge whether sensor array receives contact torque inductive signal, if so, issuing stop motion by controller Instruction, then control cooperation robot stop motion;Conversely, then performing the next step rapid;
Judging whether cooperation robot moves terminates, if so, being not processed;Conversely, then passing back through teaching machine setting Teaching motion profile, control cooperation robot motion the step for.
Further, described the step for stop motion instruction is issued by controller, controls cooperation robot stop motion, It is further comprising the steps of:
Judge whether the movement failure of cooperation robot has excluded, if so, passing back through the teaching of teaching machine setting The step for motion profile, control cooperation robot motion;Conversely, then issuing warning note by warning device.
Further, the multiple sensor unit is set to cooperation robot outer surface according to setting gap.
The beneficial effects of the present invention are: the present invention is additionally arranged sensor array, the sensor array in cooperation robot Column include multiple sensor units for being set to cooperation robot outer surface, multiple torques that the present invention is obtained according to sensor array Inductive signal, calculates stress point position, the torque size of composite force and the Impact direction of composite force of composite force, and according to The Impact direction of the stress point position of composite force, the torque size of composite force and composite force generates motion control instruction, most The movement of cooperation robot is controlled according to motion control instruction afterwards, cooperation robot of the invention is in teaching and real work In the process, no setting is required safe grating, cost is relatively low, and the weight and inertia that not will receive mechanical arm itself are to moment inspecting knot The influence of fruit, can obtain stress point position, torque size and the Impact direction of composite force, and practicability is high.
Detailed description of the invention
Fig. 1 is that the present invention is based on the overall structure block diagrams of the cooperation robot system of array of pressure sensors;
Fig. 2 is that the present invention is based on the step flow charts of the implementation method of the cooperation robot system of array of pressure sensors;
Fig. 3 is the flow chart of the teaching state of cooperation robot in the embodiment of the present invention;
Fig. 4 is the flow chart of the working condition of cooperation robot in the embodiment of the present invention.
Specific embodiment
The present invention is further explained and is illustrated with specific embodiment with reference to the accompanying drawings of the specification.For of the invention real The step number in example is applied, is arranged only for the purposes of illustrating explanation, any restriction is not done to the sequence between step, is implemented The execution sequence of each step in example can be adaptively adjusted according to the understanding of those skilled in the art.
Referring to Fig.1, the present invention is based on the cooperation robot system of array of pressure sensors, including teaching machine, controller and Cooperate robot, and the cooperation robot includes motion-control module and sensor array;Wherein:
The teaching machine is used to set the motion profile of cooperation robot;
The sensor array is used for several sensor units by being set to cooperation robotic surface to obtain torque Inductive signal;
The controller, multiple torque inductive signals for being obtained according to sensor array, calculate composite force by Force position, the torque size of composite force and the Impact direction of composite force, and according to the stress point position of composite force, composite force Torque size and the Impact direction of composite force generate motion control instruction;
The motion-control module, the motion control instruction for being sent according to controller, the fortune of control cooperation robot Movement.
It is further used as preferred embodiment, the teaching machine includes key module, and the key module is for obtaining The input of user instructs, and sends controller for input instruction.
Referring to Fig.1, it is further used as preferred embodiment, further includes warning device, the warning device is used for basis The control instruction of controller carries out warning note.
Referring to Fig.1, it is further used as preferred embodiment, the cooperation robot further includes locating module, described fixed Position module is used to obtain the location information of cooperation robot.
Referring to Fig. 2, the present invention is based on the implementation methods of the cooperation robot system of array of pressure sensors, including following step It is rapid:
According to the teaching motion profile that teaching machine is set, control cooperation robot motion;
According to several torque inductive signals that sensor array obtains, stress point position, the composite force of composite force are calculated Torque size and composite force Impact direction;
According to the stress point position of composite force, the torque size of composite force and the Impact direction of composite force, movement is generated Control instruction;
According to motion control instruction, the athletic performance of control cooperation robot.
Wherein, sensor of the invention array is made of each sensor unit, and each sensor unit corresponds to one The additional space position of cooperation robot arm, each sensor unit can detect connecing perpendicular to sensor unit surface Then touch square size synthesizes the torque size that each sensor unit receives by controller, finally according to each sensor unit Relative tertiary location calculates torque direction and stress point.
It is further used as preferred embodiment, described several torque inductive signals obtained according to sensor array, The step for calculating the Impact direction of the stress point position of composite force, the torque size of composite force and composite force, including it is following Step:
Stress point position, torque size and the Impact direction of multiple sensor units in sensor array are obtained respectively;
According to the torque size and Impact direction of multiple sensor units, the torque direction vector of composite force is calculated;
According to the torque direction vector of composite force, the torque size of composite force is calculated;
According to the stress point position of multiple sensor units, the stress point position of composite force is calculated.
It is further used as preferred embodiment, described according to motion control instruction, the movement of control cooperation robot is dynamic The step for making, comprising the following steps:
Whether the movement anchor point for judging cooperation robot is taught point, if so, movement anchor point is recorded as teaching Point, and perform the next step rapid;Conversely, the teaching motion profile set according to teaching machine is then returned, control cooperation robot motion The step for;
Judge whether the teaching campaign of cooperation robot terminates, if so, stopping the athletic performance of cooperation robot;Instead The step for it, then pass back through the teaching motion profile of teaching machine setting, controls cooperation robot motion, until cooperation machine The teaching campaign of people terminates.
It is further used as preferred embodiment, described according to motion control instruction, the movement of control cooperation robot is dynamic The step for making, further comprising the steps of:
Judge whether sensor array receives contact torque inductive signal, if so, issuing stop motion by controller Instruction, then control cooperation robot stop motion;Conversely, then performing the next step rapid;
Judging whether cooperation robot moves terminates, if so, being not processed;Conversely, then passing back through teaching machine setting Teaching motion profile, control cooperation robot motion the step for.
It is further used as preferred embodiment, it is described that stop motion instruction, control cooperation machine are issued by controller It is the step for people's stop motion, further comprising the steps of:
Judge whether the movement failure of cooperation robot has excluded, if so, passing back through the teaching of teaching machine setting The step for motion profile, control cooperation robot motion;Conversely, then issuing warning note by warning device.
It is further used as preferred embodiment, the multiple sensor unit is set to cooperation robot according to setting gap Outer surface.
Separately below by taking the teaching state and working condition of the robot that cooperates as an example, the present invention will be described in detail is passed based on pressure The specific workflow of the cooperation robot system of sensor array:
Referring to Fig. 3, cooperate specific workflow of the robot under teaching state are as follows:
S101, operator input teaching sign on by the key module on teaching machine, are then dragged by operator Cooperation robot is draged to be moved;
S102, cooperation robot obtain the moment information of operator by sensor array in towing motion process;
Wherein, step S102 specifically: respectively by multiple sensor units obtain the size of torque, Impact direction and by Power position.
S103, according to the moment information that gets, calculate the stress point position of composite force, composite force torque size with And the Impact direction of composite force;
In the present embodiment, the position of sensor unit uses matrixIt indicates, Using the direction perpendicular to flat sensor surface as z-axis direction (i.e.).The location matrix for remembering i-th of sensor unit isThe torque size for remembering i-th of sensor unit is fi, then the Impact direction of i-th of sensor unit to Amount isIf the size of the torque of composite force is scalar fS;Unit direction vector isDue to association Make movement velocity v (the i.e. v=k*f directly proportional to torque size of robots), so the direction of motion and unit of cooperation robot Direction vector is identical.Wherein,Represent relative to reference frame sensor unit position coordinates shafting n axis direction to Amount;Represent a axis direction vector of the position coordinates shafting of the sensor unit relative to reference frame;Represent relative to The position coordinates shafting position vector of the sensor unit of reference frame;axIt representsPoint of the vector in reference frame x-axis Amount;ayIt representsComponent of the vector in reference frame y-axis;azIt representsComponent of the vector in reference frame z-axis;
To sum up, the direction vector for calculating composite force isThe list of composite force Position direction vector beThe torque size of composite force isThe stress point position vector of composite force is
S104, according to the Impact direction next life of the stress point position of composite force, the torque size of composite force and composite force At motion control instruction.
S105, cooperation robot are moved to preset movement anchor point according to motion control instruction, and by the anchor point mark It is denoted as taught point;
S106, judge whether the teaching campaign of cooperation robot terminates, if so, the movement for stopping cooperation robot is dynamic Make;Conversely, S101 is then returned to step, until the teaching campaign of cooperation robot terminates.
Referring to Fig. 4, the specific workflow of cooperation robot in the operating condition are as follows:
S201, operator are by the key module input service sign on teaching machine, and the robot that cooperates is according to showing The motion profile of religion device setting is moved.
S202, cooperation robot during the motion, the moment information of operator are obtained by sensor array;
Wherein, step S202 specifically: respectively by multiple sensor units obtain the size of torque, Impact direction and by Power position.
S203, judge whether cooperation robot receives contact torque during the motion, if so, thening follow the steps S204; Conversely, thening follow the steps S205;
S204 issues stop motion instruction by controller, then control cooperation robot stop motion;
Wherein, the step S204 is further comprising the steps of:
Judge whether the movement failure of cooperation robot has excluded, if so, return step S201;Conversely, then passing through Warning device issues warning note.
Whether S205, the robot that judges to cooperate move and terminate, if so, being not processed;Conversely, then return step S201.
In conclusion the present invention is based on the cooperation robot system and its implementation of array of pressure sensors, have with Lower advantage:
1), cooperation robot of the invention is in teaching and practical work process, no setting is required safe grating, cost compared with It is low;
2), the present invention not will receive the influence of the weight and inertia of mechanical arm itself to moment inspecting result, can obtain Stress point position, torque size and the Impact direction of composite force, practicability are high.
It is to be illustrated to preferable implementation of the invention, but the present invention is not limited to the embodiment above, it is ripe Various equivalent deformation or replacement can also be made on the premise of without prejudice to spirit of the invention by knowing those skilled in the art, this Equivalent deformation or replacement are all included in the scope defined by the claims of the present application a bit.

Claims (10)

1. the cooperation robot system based on array of pressure sensors, it is characterised in that: including teaching machine, controller and cooperation machine Device people, the cooperation robot includes motion-control module and sensor array;Wherein:
The teaching machine is used to set the motion profile of cooperation robot;
The sensor array is used for several sensor units by being set to cooperation robotic surface to obtain torque induction Signal;
The controller, multiple torque inductive signals for being obtained according to sensor array, calculates the stress point of composite force Position, the torque size of composite force and the Impact direction of composite force, and according to the stress point position of composite force, the power of composite force The Impact direction of square size and composite force generates motion control instruction;
The movement of the motion-control module, the motion control instruction for being sent according to controller, control cooperation robot is dynamic Make.
2. the cooperation robot system according to claim 1 based on array of pressure sensors, it is characterised in that: described to show Teaching device includes key module, and the key module is used to obtain the input instruction of user, and sends controller for input instruction.
3. the cooperation robot system according to claim 1 based on array of pressure sensors, it is characterised in that: further include Warning device, the warning device are used for the control instruction according to controller, carry out warning note.
4. the cooperation robot system according to claim 1 based on array of pressure sensors, it is characterised in that: the association It further include locating module as robot, the locating module is used to obtain the location information of cooperation robot.
5. the implementation method of the cooperation robot system based on array of pressure sensors, it is characterised in that: the following steps are included:
According to the teaching motion profile that teaching machine is set, control cooperation robot motion;
According to several torque inductive signals that sensor array obtains, the stress point position of composite force, the power of composite force are calculated The Impact direction of square size and composite force;
According to the stress point position of composite force, the torque size of composite force and the Impact direction of composite force, motion control is generated Instruction;
According to motion control instruction, the athletic performance of control cooperation robot.
6. the implementation method of the cooperation robot system according to claim 5 based on array of pressure sensors, feature Be: described several torque inductive signals obtained according to sensor array calculate stress point position, the composite force of composite force Torque size and composite force Impact direction the step for, comprising the following steps:
Stress point position, torque size and the Impact direction of multiple sensor units in sensor array are obtained respectively;
According to the torque size and Impact direction of multiple sensor units, the torque direction vector of composite force is calculated;
According to the torque direction vector of composite force, the torque size of composite force is calculated;
According to the stress point position of multiple sensor units, the stress point position of composite force is calculated.
7. the implementation method of the cooperation robot system according to claim 5 based on array of pressure sensors, feature It is: it is described according to motion control instruction, the step for the athletic performance of control cooperation robot, comprising the following steps:
Whether the movement anchor point for judging cooperation robot is taught point, if so, movement anchor point is recorded as taught point, and It performs the next step rapid;Conversely, the teaching motion profile set according to teaching machine is then returned, control cooperation this step of robot motion Suddenly;
Judge whether the teaching campaign of cooperation robot terminates, if so, stopping the athletic performance of cooperation robot;Conversely, then The step for passing back through the teaching motion profile of teaching machine setting, controlling cooperation robot motion, until cooperation robot Teaching campaign terminates.
8. the implementation method of the cooperation robot system according to claim 7 based on array of pressure sensors, feature It is: it is described according to motion control instruction, further comprising the steps of the step for the athletic performance of control cooperation robot:
Judge whether sensor array receives contact torque inductive signal, if so, stop motion instruction is issued by controller, Then control cooperation robot stop motion;Conversely, then performing the next step rapid;
Judging whether cooperation robot moves terminates, if so, being not processed;Conversely, then passing back through showing for teaching machine setting The step for teaching motion profile, controlling cooperation robot motion.
9. the implementation method of the cooperation robot system according to claim 8 based on array of pressure sensors, feature It is: it is described that stop motion instruction is issued by controller, the step for cooperating robot stop motion is controlled, further includes following Step:
Judge whether the movement failure of cooperation robot has excluded, if so, passing back through the teaching campaign of teaching machine setting The step for track, control cooperation robot motion;Conversely, then issuing warning note by warning device.
10. the implementation method of the cooperation robot system according to claim 6 based on array of pressure sensors, feature Be: the multiple sensor unit is set to cooperation robot outer surface according to setting gap.
CN201810913223.5A 2018-08-13 2018-08-13 Cooperation robot system and its implementation based on array of pressure sensors Pending CN109129417A (en)

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CN111716361A (en) * 2020-07-03 2020-09-29 深圳市优必选科技股份有限公司 Robot control method and device and surface-surface contact model construction method
CN112847345A (en) * 2020-12-30 2021-05-28 上海节卡机器人科技有限公司 Method and device for determining robot dragging teaching mode
CN114019955A (en) * 2021-10-12 2022-02-08 科沃斯机器人股份有限公司 Self-moving robot and motion control method
CN114872041A (en) * 2022-04-21 2022-08-09 上海发那科机器人有限公司 Cooperative robot control method based on force sense sensor and cooperative robot

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CN114872041A (en) * 2022-04-21 2022-08-09 上海发那科机器人有限公司 Cooperative robot control method based on force sense sensor and cooperative robot

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