We present a pipe inspection robot using a newly developed spherical ultrasonic motor (SUSM) as a camera actuator. The novel SUSM has improved the range of movement compared to previous SUSMs, and the robot can point a camera in any direction. In this study, we determined a method for controlling the rotational direction and strategic control from the kinematics and characteristics of ultrasoni...

In the literature, Spherobot refers to a mobile robot with a spherical exo-skeleton and a propulsion mechanism that uses unbalance masses in a tetrahedral arrangement. A modified design of Spherobot, that is better suited to fabrication, is presented in this paper. The modified propulsion mechanism and other components of the design are discussed in detail to highlight the challenges of fabrica...

Several criteria exist for determining the optimal design for a surgical robot. This paper considers kinematic performance metrics, which reward good kinematic performance, and dynamic performance metrics, which penalize poor dynamic performance. Kinematic and dynamic metrics are considered independently, and then combined to produce hybrid metrics. For each metric, the optimal design is the on...

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Spherical rolling robots (SRR) have been a promising avenue for the exploration of unstructured environments with variable topologies. The advantages include ability to move fast, robustness collision, and lower number actuators. However, finally be used in real missions applications, they need high maneuverability sufficient inner space house proper payload intended application, such as cave t...

Path planning within three-dimensional environments is of great importance in contemporary time due to the introduction robots many works. Finding shortest path reduces fuel and time. In this paper a new algorithm proposed plan paths 3D environments. The was tested two ways: simulation practical. A multi-propeller vehicle built that can track resulting from algorithm. spherical shape robot, obs...

Self-organization and the phenomenon of emergence play an essential role in living systems and form a challenge to artificial life systems. This is not only because systems become more life like but also since self-organization may help in reducing the design efforts in creating complex behavior systems. The present paper exemplifies a general approach to the self-organization of behavior which...

in this article a new and an accurate method for kinematic and dynamic analysis of a parallel robot 3prs and a hybrid robot (parallel and serial) 3prs-rrp are presented, which is based on the denavit-hartenberg transformation matrix algebra. first, basic properties of various kinds of robots are compared, and then the denavit-hartenberg parameters and their table are introduced. next, the metho...

The present paper investigates an intuitive way of robot path planning, called robot teaching by demonstration. In this method, an operator holds the robot end-effector and moves it through a number of positions and orientations in order to teach it a desired task. The presented control architecture applies impedance control in such a way that the end-effector follows the operator’s hand with d...

In this paper, the mechanical design process of a star spherical parallel robot that we call Zippy Wrist is illustrated. The Zippy Wrist is a 3-RRP spherical parallel manipulator and can perform many industrial applications such as; orienting a tool or a workpiece in machine tools, solar panels, space antennas and telescopic mechanisms, flight simulator mechanism and camera devices. The forward...