CN110355750A - Interaction control method towards remote operating hand eye coordination - Google Patents
Interaction control method towards remote operating hand eye coordination Download PDFInfo
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- CN110355750A CN110355750A CN201811270020.5A CN201811270020A CN110355750A CN 110355750 A CN110355750 A CN 110355750A CN 201811270020 A CN201811270020 A CN 201811270020A CN 110355750 A CN110355750 A CN 110355750A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J3/00—Manipulators of master-slave type, i.e. both controlling unit and controlled unit perform corresponding spatial movements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Programme-controlled manipulators
- B25J9/16—Programme controls
- B25J9/1602—Programme controls characterised by the control system, structure, architecture
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Programme-controlled manipulators
- B25J9/16—Programme controls
- B25J9/1694—Programme 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
- B25J9/1697—Vision controlled systems
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- Automation & Control Theory (AREA)
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Abstract
The invention discloses a kind of interaction control method towards remote operating hand eye coordination, the technical issues of the practicability is poor for solving existing man-machine interaction control method.Technical solution is the conversion based on coordinate system, when operator controls scenario objects movement by switching equipment, the pose of scenario objects is transformed into camera coordinates system by world coordinate system first, then movement adds the precession amount of interactive device as expected in camera coordinates system, new camera coordinates system pose coordinate is obtained, the pose coordinate newly obtained is finally transformed into the actual motion in world coordinate system to control scenario objects by camera coordinates system.The present invention realizes the hand eye coordination of remote operating process, i.e., the movement of scenario objects is not observed scene view transformation by operator and influenced during interactive operation, consistent with the movement of interactive device, reduces remote operating difficulty, practicability is good.
Description
Technical field
The present invention relates to a kind of man-machine interaction control methods, more particularly to a kind of interaction towards remote operating hand eye coordination
Control method.
Background technique
Document " Teleoperation Systems master-slave control strategy, Jiangsu University of Science and Technology's journal (natural science edition), 2013,
Vol27 (8), p643-647 " disclose a kind of control method of master-slave mode Teleoperation Systems.This method uses increment type
Position control mode controls the movement from hand with the increment of main hand, relatively efficiently avoids the cumbersome of initial Aligning control.Work as behaviour
Operator directly observe by when operating environment information with operator by vision facilities observation by operating environment information when, principal and subordinate
Between position it is corresponding different, control gain matrix by adjusting ratio, carry out main hand and actual environment or main hand and vision facilities
Coordinate matching, the working space for establishing main and slave terminal are mapped with preferable approach sense of vision.Document the method is based only on
The direct environment of observation information of operator and the difference for passing through vision facilities environment of observation information control gain coefficient letter by ratio
The working space for singly establishing main hand and actual environment or main hand and vision facilities maps, and works as operator's observation quilt without providing
When operating environment information observes visual angle change, it is empty to be not carried out the work of principal and subordinate end for the method for establishing the mapping of principal and subordinate end working space
Between map and do not influenced by observation visual angle variation, movement is consistent always, and the scope of application is not wide, and operation difficulty is larger.
Summary of the invention
In order to overcome the shortcomings of existing man-machine interaction control method, the practicability is poor, and the present invention provides one kind towards remote operating hand
The interaction control method of eye coordinate.Conversion of this method based on coordinate system, operator control scenario objects by switching equipment and transport
When dynamic, the pose of scenario objects is transformed into camera coordinates system by world coordinate system first, is then pressed in camera coordinates system
Desired movement adds the precession amount of interactive device, obtains new camera coordinates system pose coordinate, finally sits the pose newly obtained
Mark is transformed into the actual motion in world coordinate system to control scenario objects by camera coordinates system.The present invention realizes remote operating
The hand eye coordination of process, i.e., the shadow of scene view transformation is not observed in the movement of scenario objects by operator during interactive operation
It rings, it is consistent with the movement of interactive device, remote operating difficulty is reduced, practicability is good.
The technical solution adopted by the present invention to solve the technical problems is: a kind of interaction control towards remote operating hand eye coordination
Method processed, its main feature is that the following steps are included:
Step 1: interactive device data acquire, in hand controller motion process, constant duration acquires the real-time of hand controller
Location information Pc n；By collected hand controller real-time position information Pc nWith previous moment posture information Pc n-1Hand controller is obtained as difference
Precession amount Δ P；By precession amount Δ P according to Δ P0=k* Δ P is mapped as the initial motion instruction Δ P of mechanical arm tail end0, wherein k
To operate proportionality coefficient.
△P0=k* △ P (1)
Step 2: in conjunction with the transition matrix R of interactive operation coordinate system to camera coordinates systemx, Δ P is instructed to initial motion0Into
Row conversion process obtains the movement instruction Δ P in camera coordinates system1。
△P1=△ P0*Rx (2)
Step 3: position auto―control C of the combining camera coordinate system in world coordinate system, to the movement instruction in camera coordinates system
ΔP1Conversion process is carried out, the movement instruction Δ P in world coordinate system is obtained2。
In interactive process, the what comes into a driver's that operator observes is determined by position and attitude of the camera in world coordinate system, and
The position and attitude matrix of camera depend on three elements: i.e. camera sight line direction, the position of image center, camera positive court
To these three elements just can determine that position and attitude of the camera in world coordinate system.When observation visual angle conversion, essence is camera
Position and attitude in world coordinate system is changed, and direction of the camera coordinates system in world coordinate system also becomes therewith
Change.
Amount of exercise obtained in step 2 is transformed into world coordinate system from camera coordinates system, needs to use camera matrix
Inverse matrix C-1.Further, since interactive device is 1x3 matrix with momentum matrix, it is therefore desirable to construct the matrix D of a 1x4.
D=[△ P1 0] (4)
△P2=DC-1 (5)
Step 4: by the movement instruction Δ P in world coordinate system2The final fortune of mechanical arm tail end is obtained by moving mapping
Momentum Δ P3, generate the remote operating instruction of entire interactive process.
The world coordinate system movement instruction Δ P that step 3 is obtained2Expansion obtains Δ P2For 1x4 matrix, first three column element
For the final amount of exercise of scenario objects end, Δ P is taken by moving mapping2First three columns Element generation Δ P3, it is simplified to be expressed as follows:
△P3=[△ x △ y △ z] (6)
Wherein, Δ x, Δ y, Δ z respectively indicate the fortune of scenario objects end three change in coordinate axis direction in world coordinate system
Momentum is so far generated to realize that the remote operating of hand eye coordination instructs.
Step 5: the remote operating order-driven manipulator motion generated using step 4, realizes hand eye coordination.
The real time position of scenario objects end is denoted as Pj n, the position of subsequent time is Pj n+1, then
Scenario objects movement is driven by scenario objects real-time end position, realizes the hand eye coordination of remote operating process.
The beneficial effects of the present invention are: conversion of this method based on coordinate system, operator control scene by switching equipment
When object moves, the pose of scenario objects is transformed into camera coordinates system by world coordinate system first, then in camera coordinates
Movement adds the precession amount of interactive device as expected in system, obtains new camera coordinates system pose coordinate, finally will newly obtain
Pose coordinate is transformed into the actual motion in world coordinate system to control scenario objects by camera coordinates system.The present invention realizes
The hand eye coordination of remote operating process, i.e., the movement of scenario objects is not observed scene visual angle by operator and become during interactive operation
The influence changed, it is consistent with the movement of interactive device, remote operating difficulty is reduced, practicability is good.
It elaborates With reference to embodiment to the present invention.
Specific embodiment
For the contents of the present invention are discussed in detail, the definition to 3 Common Coordinates is needed to be illustrated:
(1) world coordinate system Oworld: world coordinate system is the reference frame of whole system, for describing object in scene
The actual motion of model, is equivalent to basis coordinates system, and the movement of scenario objects is all based on world coordinate system to be described.
(2) camera coordinates system Ocamera: camera coordinates system is used to describe remote operating what comes into a driver's, when operator's observation visual angle converts
When, essence is that position and attitude of the camera in world coordinate system is changed.When observation visual angle transformation, camera coordinates are tied up to
Pose in world coordinate system changes, but it is constant relative to the direction of computer screen.
(3) interactive operation coordinate system (i.e. hand controller coordinate system) Ointeraction: interactive device coordinate system is used to describe distant behaviour
The movement of interactive device during work, when observation visual angle transformation, position and attitude of the interactive device in world coordinate system will be sent out
Changing, but it is constant relative to the direction of computer screen.
For the validity for verifying the operating technology proposed by the invention towards remote operating hand eye coordination, the present invention combines three
Graphical development environment OSG (OpenSenceGraph) and interactive tool NovintFalcon hand controller are tieed up, based on to virtual views
The control of middle IRB120 manipulator motion carries out simulation demo verifying, and specific embodiment is as follows:
Step 1: interactive device data acquire, by taking hand controller moves upwards as an example, in hand controller motion process medium while
Interval collects the real time position posture information P of hand controllerc n；By collected hand controller real-time pose information Pc nWith it is previous
Moment posture information Pc n-1Hand controller precession amount Δ P is obtained as difference；By precession amount Δ P according to Δ P0=k* Δ P is mapped as mechanical arm
The initial motion of end instructs Δ P0, wherein k is operation proportionality coefficient, and hand controller end movement amount unit is rice, virtual scene
Middle mechanical arm tail end amount of exercise unit is millimeter, operates proportionality coefficient k=1000, when hand controller end moves upwards 0.1 meter,
Initial motion instructs
△P0=k* △ P=[0 0 100] (1)
Step 2: in conjunction with the transition matrix R of interactive operation coordinate system to camera coordinates systemx, Δ P is instructed to initial motion0Into
Row conversion process obtains the movement instruction Δ P in camera coordinates system1。
Through the positional relationship analysis to interactive device coordinate system and camera coordinates system it is found that when observation visual angle transformation,
There is no variations for the relative direction of interactive device coordinate system and camera coordinates system in world coordinate system, by interactive device coordinate
System is rotated by 90 ° along X-axis can be consistent with camera coordinates system direction.
Step 3: position auto―control C of the combining camera coordinate system in world coordinate system, to the movement instruction in camera coordinates system
ΔP1Conversion process is carried out, the movement instruction Δ P in world coordinate system is obtained2。
When facing scene, position auto―control of the camera in world coordinate system is C.
Since interactive device is 1x3 matrix with momentum matrix, need to construct the matrix D of a 1x4.
D=[△ P10]=[0 100 0 0] (4)
△P2=DC-1=[0 0 100 0] (5)
Step 4: by the movement instruction Δ P in world coordinate system2The final fortune of mechanical arm tail end is obtained by moving mapping
Momentum Δ P3, generate the remote operating instruction of entire interactive process.
△P3=[△ x △ y △ z]=[0 0 100] (6)
Wherein, Δ x, Δ y, Δ z respectively indicate the fortune of scenario objects end three change in coordinate axis direction in world coordinate system
Momentum is so far generated to realize that the remote operating of hand eye coordination instructs.
Step 5: the remote operating order-driven manipulator motion generated using step 4, realizes hand eye coordination.Scenario objects
The real time position of end is denoted as Pj n, the position of subsequent time is Pj n+1, then
Interactive controlling of the present embodiment based on IRB120 mechanical arm, will complete step 5, first with tools such as 3D MAX
IRB120 mechanical arm threedimensional model is established, building for virtual views is completed；On the basis of D-H coordinate system, mechanical arm is established
Kinematics model.
Carrying out forward Kinematic Analysis each adjacent two coordinate system to it first can mutually be turned by four homogeneous transformations
Change set transformation matrix asThen
Wherein, ai、αi、di、θiRespectively length of connecting rod, two sides torsion angle, connecting rod offset, joint angle.
For sixdegree-of-freedom simulation, after the joint angle when each joint determines, mechanical arm tail end pose also determines therewith,
If end pose is T, then
Secondly, carrying out your kinematics analysis to it with analytic method, each joint angle is sought according to end pose.
θ can be sought by above formula1, other joint angles are successively sought by analytic method.
The initial position of mechanical arm tail endWhen facing scene,
It can be obtained after carrying out movement mapping by the above hand eye coordination interaction control method, when hand controller moves upwards, just
Depending on virtual views, the direction of motion of mechanical arm is along Z axis, and when overlooking virtual views, manipulator motion direction is along Y-axis.Thus,
When the transformation of the observation visual angle of operator, using hand eye coordination implementation method proposed in this paper, the fortune of scenario objects can be realized
It is dynamic consistent with the movement of interactive device, to demonstrate the validity of hand eye coordination method proposed in this paper.
Claims (1)
1. a kind of interaction control method towards remote operating hand eye coordination, it is characterised in that the following steps are included:
Step 1: interactive device data acquire, in hand controller motion process, constant duration acquires the real time position of hand controller
Information Pc n；By collected hand controller real-time position information Pc nWith previous moment posture information Pc n-1Hand controller precession is obtained as difference
Measure Δ P；By precession amount Δ P according to Δ P0=k* Δ P is mapped as the initial motion instruction Δ P of mechanical arm tail end0, wherein k is behaviour
Make proportionality coefficient；
ΔP0=k* Δ P (1)
Step 2: in conjunction with the transition matrix R of interactive operation coordinate system to camera coordinates systemx, Δ P is instructed to initial motion0Turned
Processing is changed, the movement instruction Δ P in camera coordinates system is obtained1；
ΔP1=Δ P0*Rx (2)
Step 3: position auto―control C of the combining camera coordinate system in world coordinate system, to the movement instruction Δ P in camera coordinates system1
Conversion process is carried out, the movement instruction Δ P in world coordinate system is obtained2；
In interactive process, the what comes into a driver's that operator observes is determined by position and attitude of the camera in world coordinate system, and camera
Position and attitude matrix depend on three elements: i.e. camera sight line direction, the position of image center, camera positive direction, this
Three elements just can determine that position and attitude of the camera in world coordinate system；When observation visual angle conversion, essence is that camera is alive
Position and attitude in boundary's coordinate system is changed, and direction of the camera coordinates system in world coordinate system also changes therewith；
Amount of exercise obtained in step 2 is transformed into world coordinate system from camera coordinates system, needs to use camera inverse of a matrix square
Battle array C-1；Further, since interactive device is 1x3 matrix with momentum matrix, it is therefore desirable to construct the matrix D of a 1x4；
D=[Δ P1 0] (4)
ΔP2=DC-1 (5)
Step 4: by the movement instruction Δ P in world coordinate system2The final amount of exercise of mechanical arm tail end is obtained by moving mapping
ΔP3, generate the remote operating instruction of entire interactive process；
The world coordinate system movement instruction Δ P that step 3 is obtained2Expansion obtains Δ P2For 1x4 matrix, first three column element is field
The final amount of exercise of scape object end takes Δ P by moving mapping2First three columns Element generation Δ P3, it is simplified to be expressed as follows:
ΔP3=[Δ x Δ y Δ z] (6)
Wherein, Δ x, Δ y, Δ z respectively indicate the amount of exercise of scenario objects end three change in coordinate axis direction in world coordinate system,
So far, it is generated to realize that the remote operating of hand eye coordination instructs；
Step 5: the remote operating order-driven manipulator motion generated using step 4, realizes hand eye coordination；
The real time position of scenario objects end is denoted as Pj n, the position of subsequent time is Pj n+1, then
Scenario objects movement is driven by scenario objects real-time end position, realizes the hand eye coordination of remote operating process.
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| CN115570558A (en) * | 2022-10-28 | 2023-01-06 | 武汉恒新动力科技有限公司 | Somatosensory cooperative teleoperation system and method for controlled object cluster |
| CN115639910A (en) * | 2022-10-28 | 2023-01-24 | 武汉恒新动力科技有限公司 | All-dimensional somatosensory interaction method facing operation space of operation object and operation device |
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| CN115639910A (en) * | 2022-10-28 | 2023-01-24 | 武汉恒新动力科技有限公司 | All-dimensional somatosensory interaction method facing operation space of operation object and operation device |
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