雙目視覺機器人軌跡規(guī)劃與跟蹤技術(shù)的研究
[Abstract]:At present, industrial robot has become an indispensable part of modern manufacturing industry, so it is necessary to study its trajectory planning and tracking. In this paper, the trajectory planning and tracking are deeply studied by using Kuka robot as carrier and combining theory with simulation verification. In order to obtain the target position information of the space quickly and stably, the binocular vision system is mounted on the existing robot model to provide the random position information of the target for its control. Trajectory planning is the basis of trajectory tracking, so the trajectory planning of the robot is studied and analyzed firstly, and then the trajectory tracking is studied and analyzed. (1) the binocular vision system is introduced. The spatial positioning function of binocular is applied to robot system. Firstly, by analyzing the imaging model of the camera, the relationship among image coordinate system, camera coordinate system and world coordinate system is obtained, and the binocular camera system is calibrated, and then the coordinate transformation relationship of the vision robot is analyzed. The vision system and robot coordinate system are calibrated. Finally, the software platform of calibration and coordinate transformation of space points is constructed by using C. (2) the DH-coordinate system is modeled by taking Kuka 6-DOF robot as the research object. The kinematics and dynamics equations are derived. Then, the MATLAB software is used to verify the established model. On the basis of kinematics, trajectory planning of robot in joint space and Cartesian space is studied. In order to make the robot end effector grasp the random target smoothly, the cubic spline interpolation is used to plan the trajectory in Cartesian space, and the trajectory of the end is fitted. Finally, the robot toolbox is used to simulate the joint space trajectory planning, and the trajectory of each joint angle position, velocity, acceleration and end position is drawn. The correctness of the simulation algorithm is verified theoretically. (3) in order to make the robot end effector track the desired trajectory smoothly and without impact, the dynamic characteristics of the trajectory tracking control algorithm are considered. Firstly, based on the dynamic model, the traditional trajectory tracking algorithm is analyzed, and the feedback linear integral sliding mode algorithm is proposed. The stability of the algorithm is analyzed by Lyapunov theory. The simulation results with matlab software verify the feasibility of the proposed algorithm and its advantages in tracking accuracy and response time.
【學(xué)位授予單位】:湖北工業(yè)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TP242
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