WO2019237351A1 - 机器人运动控制方法、装置、存储介质及机器人 - Google Patents
机器人运动控制方法、装置、存储介质及机器人 Download PDFInfo
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- WO2019237351A1 WO2019237351A1 PCT/CN2018/091624 CN2018091624W WO2019237351A1 WO 2019237351 A1 WO2019237351 A1 WO 2019237351A1 CN 2018091624 W CN2018091624 W CN 2018091624W WO 2019237351 A1 WO2019237351 A1 WO 2019237351A1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
- G05D1/02—Control of position or course in two dimensions
- G05D1/021—Control of position or course in two dimensions specially adapted to land vehicles
- G05D1/0212—Control of position or course in two dimensions specially adapted to land vehicles with means for defining a desired trajectory
- G05D1/0217—Control of position or course in two dimensions specially adapted to land vehicles with means for defining a desired trajectory in accordance with energy consumption, time reduction or distance reduction criteria
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
- G05D1/40—Control within particular dimensions
- G05D1/43—Control of position or course in two dimensions [2D]
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
- G05D1/60—Intended control result
- G05D1/617—Safety or protection, e.g. defining protection zones around obstacles or avoiding hazards
- G05D1/622—Obstacle avoidance
- G05D1/633—Dynamic obstacles
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D2109/00—Types of controlled vehicles
- G05D2109/10—Land vehicles
Definitions
- the present disclosure relates to the technical field of robots, and in particular, to a method, device, storage medium, and robot for robot motion control.
- An object of the present disclosure is to provide a robot motion control method, device, storage medium, and robot for realizing the robot to avoid obstacles and reach the target point safely with the shortest path.
- a first aspect of the present disclosure provides a robot motion control method, including:
- the information of the obstacle is obtained in real time, and the obstacle information includes at least one of the robot and the obstacle.
- the robot When it is detected that the robot rotates to a direction in which it points to the target point and it is detected that there is no obstacle in the direction, the robot is controlled to move linearly in a direction that points to the target point.
- a second aspect of the present disclosure provides a robot motion control device including:
- An acquisition module is configured to acquire real-time information of an obstacle when an obstacle is detected in the direction of movement of the robot during the movement of the robot to a target point, and the obstacle information includes at least the robot and The shortest distance between the obstacles;
- a control module configured to control the robot to rotate around the obstacle according to the obstacle information when the shortest distance reaches a preset safety distance, and when detecting that the robot is rotated to a direction pointing to the target point When it is detected that there is no obstacle in this direction, the robot is controlled to move linearly in a direction pointing to the target point.
- a third aspect of the present disclosure provides a computer-readable storage medium having computer program instructions stored thereon that, when executed by a processor, implement the method described in the first aspect of the present disclosure.
- a fourth aspect of the present disclosure provides a robot motion control device, including:
- One or more processors configured to execute a program in the computer-readable storage medium.
- a fifth aspect of the present disclosure provides a robot including the robot motion control device according to the second aspect of the present disclosure.
- the robot during the movement of the robot to the target point, when an obstacle is detected in the movement direction of the robot, the obstacle information is obtained in real time, and the shortest distance between the robot and the obstacle reaches a preset safety.
- the robot is controlled to rotate around the obstacle according to the obstacle information.
- the robot turns to the direction that points to the target point and detects that there are no obstacles in that direction, the robot is controlled to move linearly in the direction that points to the target point. Avoid obstacles and reach the target point safely with the shortest path.
- Fig. 1 is a flowchart illustrating a robot motion control method according to an exemplary embodiment of the present disclosure
- Fig. 5 is a schematic diagram showing a robot coordinate system and an obstacle coordinate system according to an exemplary embodiment of the present disclosure
- Fig. 6 is a block diagram showing a robot motion control device according to an exemplary embodiment of the present disclosure
- Fig. 7 is a block diagram showing a robot motion control device according to another exemplary embodiment of the present disclosure.
- Fig. 1 is a flowchart illustrating a robot motion control method according to an exemplary embodiment of the present disclosure. As shown in Figure 1, the method includes the following steps:
- step S101 when the robot moves to the target point, when an obstacle is detected in the movement direction of the robot, the obstacle information is acquired in real time, and the obstacle information includes at least the shortest distance between the robot and the obstacle.
- a distance measuring sensor (such as a laser sensor or an ultrasonic sensor) provided on the robot can detect obstacles in the moving direction of the robot and collect the distance between the robot and the obstacle.
- the distance between the robot and the obstacle is the distance between the center of the robot and the edge of the obstacle.
- the center of the robot can be the midpoint of its maximum width.
- step S102 when the shortest distance reaches a preset safety distance, the robot is controlled to rotate around the obstacle according to the obstacle information.
- the obstacle information may further include the number of obstacles. If there is only one obstacle in the movement direction of the robot, the shortest distance is the distance between the robot and the obstacle. When the shortest distance reaches a preset safety distance, the robot can be controlled to rotate around the obstacle along a first path spaced from the edge of the obstacle by the preset safety distance.
- the robot 10 and the obstacle 21 are both cylinders, and the first path formed at this time is: the center O 1 of the obstacle 21 is the center of the circle, and the preset safety distance dr and the obstacle The sum of the radii R 1 of the object 21 is the arc S 1 of the radius.
- the obstacle with the shortest distance from the robot can be the target obstacle, and according to the target obstacle and its neighboring obstacles The distance between them determines the rotation path of the robot. Accordingly, the obtained obstacle information further includes the distance between the target obstacle and its neighboring obstacles.
- the robot can be controlled to rotate around the target obstacle along a second path spaced a preset safety distance from the edge of the target obstacle.
- the second path is a path passing between the target obstacle and the adjacent obstacle.
- the number of obstacles is two, and the robot 10, the obstacle 21, and the obstacle 22 are all cylinders, and the obstacle 21 closest to the robot 10 is taken as the target obstacle.
- the two paths are: an arc S 2 with the center O 1 of the obstacle 21 as the center and the sum of the preset safety distance d r and the radius R 1 of the obstacle 21 as the radius.
- the arc S 2 passes through the obstacle 21 and Between obstacles 22.
- a preset geometry envelope algorithm treats the target obstacle and adjacent obstacles as a whole, and controls the robot to rotate around the whole along a third path spaced a predetermined safety distance from the edge of the whole,
- the third path is a path that passes through the entire side close to the target obstacle.
- the number of obstacles is two, and the robot 10 and the obstacles 21 and 22 are both cylinders.
- the obstacle 21 closest to the robot 10 is taken as the target obstacle, and the obstacle 21 is shown.
- the third path is: an arc S 3 with a preset safety distance dr at a distance from the edge of the whole 20 and the arc S 3 passes through the whole The side of 20 near the obstacle 21.
- step S103 when it is detected that the robot rotates to a direction pointing to the target point and it is detected that there is no obstacle in the direction, the control robot moves linearly in the direction pointing to the target point.
- the robot In the process of controlling the robot to rotate around the obstacle, it can be detected in real time whether the robot is rotated to the direction of the target point.
- the world coordinate system can be established by using the starting position of the robot as the origin, so that the position of the target point relative to the world coordinate system and the position of the robot relative to the world coordinate system at various times can be obtained. At a moment and the current position relative to the world coordinate system and the position of the target point relative to the world coordinate system, it can be determined whether the robot's movement direction is pointing to the target point.
- the robot When the robot rotates to a direction pointing to the target point and there are no obstacles in the direction, the robot is controlled to move straight to the target point.
- the total motion path of the robot formed at this time is: an arc (S 1 / S 2 / S 3 ) and a straight line (L 1 / L 2 / L 3 ).
- Figs. 2 to 4 only show that the robot and the obstacle are both cylinders. In fact, the robot and the obstacles are not necessarily cylinders.
- the midpoint of the maximum width of the robot can be used as the center of the robot.
- the center of the robot is preset to be spaced from the edge of the obstacle. The path of the distance rotates around the obstacle, and when it is detected that the robot is turned to the direction pointing to the target point and no obstacle is detected in the direction, the center of the control robot is moved linearly in the direction pointing to the target point.
- the maximum width of the robot may be used as the diameter, and the midpoint of the maximum width may be used as the center of the robot, and the robot may be regarded as a cylinder.
- the same may be used for this.
- Methods treat obstacles as cylinders.
- the path of the robot's rotation around the obstacle is the radius with the center of the obstacle as the origin and the sum of the preset safety distance and the radius of the obstacle (that is, half of the maximum width of the obstacle) as the radius. Circular arc (as shown in Figure 2 to Figure 4).
- an obstacle coordinate system (O R X R Y R ) that is parallel to the robot's coordinate system (O R X R Y R ) can be established with the center (O 1 ) of the obstacle as the origin O 1 X 1 Y 1 ), where the coordinate system of the robot is the center of the robot (O R ), and the first movement speed of the robot in the obstacle coordinate system can be set It is shown by Formula (1) and Formula (2).
- the robot is driven to rotate around the obstacle at the second motion speed, as shown in formula (3).
- the third motion speed of the robot in the robot coordinate system can be set As shown in equation (4), the robot is controlled to move linearly at the third movement speed in the direction of movement toward the target point G.
- the robot motion control method of the above embodiment when an obstacle is detected in the robot's movement direction and the shortest distance between the robot and the obstacle reaches a preset safety distance, the robot is controlled to rotate around the obstacle according to the obstacle information, and When the robot rotates to the direction that points to the target point and there are no obstacles in the direction, controlling the robot to move toward the target point in the pointing direction can realize that the robot can avoid the obstacles and reach the target point safely with the shortest path.
- Fig. 6 is a block diagram showing a robot motion control device according to an exemplary embodiment.
- the apparatus 600 includes: an obtaining module 601 and a control module 602.
- the obtaining module 601 is configured to obtain real-time information of an obstacle when an obstacle is detected in a moving direction of the robot during a robot's movement toward a target point, and the obstacle information includes at least the robot The shortest distance from the obstacle.
- the control module 602 is configured to control the robot to rotate around the obstacle according to the obstacle information when the shortest distance reaches a preset safety distance, and when it is detected that the robot is turned to point to the target point, When the direction is detected and there is no obstacle in the direction, the robot is controlled to move linearly in a direction pointing to the target point.
- the obstacle information further includes the number of the obstacles
- the control module 602 includes:
- a first control sub-module 621 is configured to control the robot to rotate around the obstacle along a first path spaced from the edge of the obstacle by the preset distance when the number is one.
- control module 602 further includes:
- a target obstacle determination sub-module 622 configured to use the obstacle having the shortest distance to the robot as the target obstacle when the number is multiple, and the obstacle information further includes the obstacle The distance between the target obstacle and its neighboring obstacles;
- a second control submodule 623 configured to control the robot along the target obstacle when the difference between the distance and the maximum width of the robot is greater than or equal to twice the preset safety distance
- a third control sub-module 624 is configured to control the target obstacle and the adjacent obstacle as a whole according to a preset geometric envelope algorithm when the difference is less than the preset safety distance.
- the robot rotates around the whole along a third path that is spaced from the entire edge by the preset safety distance, wherein the third path is a path that passes through the entire side near the target obstacle. .
- control module 602 includes:
- Obstacle coordinate system establishment sub-module 625 is configured to use the center of the obstacle as an origin to establish an obstacle coordinate system parallel to the coordinate system of the robot, wherein the center of the obstacle is the obstacle's Midpoint of maximum width
- a first setting sub-module 626 is configured to set a first movement speed of the robot in the obstacle coordinate system:
- a speed determining submodule 627 configured to determine a second moving speed of the robot in the robot coordinate system according to the first moving speed:
- a fourth control sub-module 628 is configured to control the robot to rotate around the obstacle with the center of the obstacle as an origin according to the second motion speed.
- control module 602 includes:
- a second setting submodule 629 configured to set a third movement speed of the robot in a coordinate system of the robot
- a fifth control sub-module 630 is configured to control the robot to move linearly at the third moving speed in a moving direction pointing to the target point.
- the robot can avoid obstacles and reach the target point safely with the shortest path.
- an embodiment of the present disclosure further provides a computer-readable storage medium having computer program instructions stored thereon, which are executed by a processor to implement the robot motion control method according to the embodiments of the present disclosure.
- an embodiment of the present disclosure further provides a robot motion control device including the computer-readable storage medium according to the embodiment of the present disclosure; and one or more processors for executing the computer-readable storage medium. program.
- an embodiment of the present disclosure further provides a robot, including the robot motion control device according to the embodiment of the present disclosure.
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Abstract
Description
Claims (13)
- 一种机器人运动控制方法,其特征在于,包括:在机器人向目标点运动的过程中,当检测到所述机器人的运动方向上存在障碍物时,实时获取所述障碍物的信息,所述障碍物的信息至少包括所述机器人与所述障碍物之间的最短距离;当所述最短距离达到预设安全距离时,根据所述障碍物信息控制所述机器人绕所述障碍物转动;并且当检测到所述机器人转动至指向所述目标点的方向且检测到该方向上不存在障碍物时,控制所述机器人沿指向所述目标点的方向直线运动。
- 根据权利要求1所述的方法,其特征在于,所述障碍物信息还包括所述障碍物的数量;所述根据所述障碍物信息控制所述机器人绕所述障碍物转动,包括:若所述数量为一个,则控制所述机器人沿与所述障碍物的边缘间隔所述预设距离的第一路径绕所述障碍物转动。
- 根据权利要求2所述的方法,其特征在于,所述根据所述障碍物信息控制所述机器人绕所述障碍物转动,还包括:若所述数量为多个,则将与所述机器人之间拥有所述最短距离的障碍物作为所述目标障碍物,所述障碍物信息还包括所述目标障碍物与其相邻障碍物之间的距离;若所述距离与所述机器人的最大宽度之间的差值大于或等于所述预设安全距离的两倍,则控制所述机器人沿与所述目标障碍物的边缘间隔所述预设安全距离的第二路径绕所述目标障碍物转动,所述第二路径为经过所述目标障碍物和所述相邻障碍物之间的路径;若所述差值小于所述预设安全距离的两倍,则根据预设的几何体包络算法将所述目标障碍物和所述相邻障碍物作为一整体,控制所述机器人沿与所述整体的边缘间隔所述预设安全距离的第三路径绕所述整体转动,其中,所述第三路径为经过所述整体的靠近所述目标障碍物的一侧的路径。
- 根据权利要求1所述的方法,其特征在于,所述根据所述障碍物信息控制所述机器人绕所述障碍物转动,包括:将所述障碍物的中心作为原点,建立与所述机器人的坐标系平行的障碍物坐标系,其中,所述障碍物的中心为所述障碍物的最大宽度的中点;设置所述机器人在所述障碍物坐标系下的第一运动速度:v 0=w 0·(d r+L/2)根据所述第一运动速度确定所述机器人在所述机器人坐标系下的第二运动速度:其中, 为所述第一运动速度; 为所述第二运动速度;v 0为所述机器人的线速度;w 0为所述机器人的角速度;d为所述最短距离;d r为所述预设安全距离;L为所述障碍物的最大宽度; RT O为预设转换矩阵;根据所述第二运动速度控制所述机器人以所述障碍物的中心为原点绕所述障碍物转动。
- 一种机器人运动控制装置,其特征在于,包括:获取模块,用于在机器人向目标点运动的过程中,当检测到所述机器人的运动方向上存在障碍物时,实时获取所述障碍物的信息,所述障碍物信息至少包括所述机器人与所述障碍物之间的最短距离;控制模块,用于当所述最短距离达到预设安全距离时,根据所述障碍物信息控制所述机器人绕所述障碍物转动,并且当检测到所述机器人转动至指向所述目标点的方向且检测到该方向上不存在障碍物时,控制所述机器人沿指向所述目标点的方向直线运动。
- 根据权利要求6所述的装置,其特征在于,所述障碍物信息还包括所述障碍物的数量;所述控制模块包括:第一控制子模块,用于在所述数量为一个时,控制所述机器人沿与所述障碍物的边缘间隔所述预设距离的第一路径绕所述障碍物转动。
- 根据权利要求7所述的装置,其特征在于,所述控制模块还包括:目标障碍物确定子模块,用于在所述数量为多个时,将与所述机器人之间拥有所述最短距离的障碍物作为所述目标障碍物,所述障碍物信息还包括所述目标障碍物与其相邻障碍物之间的距离;第二控制子模块,用于在所述距离与所述机器人的最大宽度之间的差值大于或等于所述预设安全距离的两倍时,控制所述机器人沿与所述目标障碍物的边缘间隔所述预设安全距离的第二路径绕所述目标障碍物转动,所述第二路径为经过所述目标障碍物和所述相邻障碍物之间的路径;第三控制子模块,用于在所述差值小于所述预设安全距离时,根据预设的几何体包络算法将所述目标障碍物和所述相邻障碍物作为一整体,控制所述机器人沿与所述整体的边缘间隔所述预设安全距离的第三路径绕所述整体转动,其中,所述第三路径为经过所述整体的靠近所述目标障碍物的一侧的路径。
- 根据权利要求6所述的装置,其特征在于,所述控制模块包括:障碍物坐标系建立子模块,用于将所述障碍物的中心作为原点,建立与所述机器人的坐标系平行的障碍物坐标系,其中,所述障碍物的中心为所述障碍物的最大宽度的中点;第一设置子模块,用于设置所述机器人在所述障碍物坐标系下的第一运动速度:v 0=w 0·(d r+L/2)速度确定子模块,用于根据所述第一运动速度确定所述机器人在所述机器人坐标系下的第二运动速度:其中, 为所述第一运动速度; 为所述第二运动速度;v 0为所述机器人的线速度;w 0为所述机器人的角速度;d为所述最短距离;d r为所述预设安全距离;L为所述障碍物的最大宽度; RT O为预设转换矩阵;第四控制子模块,用于根据所述第二运动速度控制所述机器人以所述障碍物的中心为原点绕所述障碍物转动。
- 一种计算机可读存储介质,其上存储有计算机程序指令,其特征在于,该程序指令被处理器执行时实现权利要求1~5中任一项所述的方法。
- 一种机器人运动控制装置,其特征在于,包括:权利要求11中所述的计算机可读存储介质;以及一个或者多个处理器,用于执行所述计算机可读存储介质中的程序。
- 一种机器人,其特征在于,包括权利要求6~10中任一项所述的机器人运动控制装置。
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| CN201880001127.1A CN108780320B (zh) | 2018-06-15 | 2018-06-15 | 机器人运动控制方法、装置、存储介质及机器人 |
| PCT/CN2018/091624 WO2019237351A1 (zh) | 2018-06-15 | 2018-06-15 | 机器人运动控制方法、装置、存储介质及机器人 |
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| CN108780320B (zh) | 2024-10-18 |
| CN108780320A (zh) | 2018-11-09 |
| CN119376384A (zh) | 2025-01-28 |
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