反恐防暴機(jī)器人腿部變形控制研究
[Abstract]:With the continuous development of robot technology, the application of mobile robot is not confined to indoor, but more used in the field of accident scene search and rescue, engineering detection, anti-terrorist explosion prevention and other outdoor fields. In recent years, natural disasters, man-made accidents and terrorism at home and abroad are becoming more and more frequent. It is urgent to replace human beings with robots that can operate in complex environments to avoid causing more casualties. In the complex environment, there are great requirements for the robot to surmount obstacles, stability and efficiency. Therefore, it is of great significance to study a kind of anti-riot robot which can adapt to different environments. The purpose of this paper is to make the anti-riot robot change its running posture through leg deformation and adapt to different terrain environment. The stability, accuracy and rapidity of the deformation process are the most important problems. In this paper, based on Floyd algorithm, a deformational strategy is proposed, in which some common robot postures are simplified as vertices in directed graph, and the rotation angle of motor and the offset of gravity center are taken as the weight factors of directed graph. So the deformation problem is transformed into the shortest path problem. Due to the parallel structure between the four legs of the anti-riot robot, and each leg is in series and symmetry, this paper uses the kinematics D-H model to model and analyze the single leg of the robot, and extends it to the whole structure. Then, the barycenter model of anti-riot robot is constructed. By using the solution method of homogeneous transformation matrix in kinematics, the solution formula of the coordinate of the center of gravity position of the robot in different attitude is given, and the weight of attitude transformation is determined. Realize the function of deformation. The speed of the four-track motor can be kept in sync so that the robot can be deformed and marching smoothly and safely. In order to improve the effect of speed synchronization, a fuzzy pid controller is added to build the biasing coupling synchronous control model based on fuzzy pid in Simulink environment. By analyzing the motor speed curve and error curve, it can be known that the speed synchronization performance of four motors is good, which can be extended to practical application. Experimental results show that the anti-riot robot deformation strategy based on Floyd algorithm can quickly and accurately find the best path between the two postures and the robot can change its shape at any time to adapt to different terrain environment.
【學(xué)位授予單位】:山東科技大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:TP242
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