The design considerations for a small, relatively fast walking, autonomous humanoid robot are presented. The robot must be energy efficient but also produce sufficient torque to reach greater speeds. On the basis of previous investigations into gait optimization for multilegged systems, dynamical modeling and nonlinear optimization tools are used for design optimization and choosing the motor s...

In this paper, dynamic equations of motion of a 5 DoF robot manipulator including mechanical arms with revolute joints and their electrical actuators are considered. The application of integrator backstepping technique for trajectory tracking in presence of parameters of uncertainty and disturbance is studied. The advantage of this control technique is that it imposes the desired properties of ...

In this paper, we propose a biped robot each of whose legs is composed of two 3-DOF parallel platforms that are linked serially. The thigh of each leg consists of a 3-DOF orientation platform and the shank consists of 3-DOF asymmetric parallel platform. The former consists of 3 active linear actuators and 7 passive joints. And the latter consists of two active linear actuators, one active rotat...

One of the ultimate goals in robotics is to make high-DOF robots work autonomously in unknown changing environments. However, motion planning in completely unknown environments is largely an open problem and poses many challenges. One challenge is that in such an environment, the configuration-time space (CT-space) of a robot is not known beforehand. This paper describes how guaranteed collisio...

Humans have degrees-of-freedom (dof) of varying bandwidths and one casually observes that they coordinate them while visually tracking. This suggests that joint interplay aids tracking performance. In a control scheme we call partitioning, both image and kinematic data are used to visually-servo a 5-dof robot by defining a joint-coupling among the rotational and translational dof. Analysis of s...

In this paper, a method for solving forward and inverse kinematics of redundant manipulator is proposed. Obtaining the joint variables of these manipulators from a desired position of the robot end-effector called as inverse kinematics (IK), is one of the most important problems in robot kinematics and control. The difficulties in solving the IK equations of these redundant robot manipulator ar...

In this paper we describe mechanical and electronic design of a precision, 2-DOF robot manipulator. The manipulator is one of a wide variety of modular robotic agents in the minifactory, a rapidly depoyable precision assembly system under development in our laboratory. The manipulator, in cooperation with another type of 2-DOF robot, termed a courier, can perform 4-DOF assembly operations emula...

This article describes the design, validation, and application of a dynamic biomechanical model that assesses and monitors trajectory, position, orientation, force, and torque generated by upper-limb (UL) movement during robot-assisted therapy. The model consists of two links that represent the upper arm and forearm, with 5 degrees of freedom (DOF) for the shoulder and elbow joints. The model i...

In this paper, combined dynamic equations of motion of a rigid-link non-redundant n-DOF robot manipulator consisting of mechanical links, all with revolute joints, and electrical actuators are considered and application of an adaptive robust control algorithm is proposed for trajectory tracking of the robot manipulator. Analysis of stability of the suggested scheme is presented in details. The ...

This paper provides an algorithm to grasp a moving object on a belt conveyer by a robot arm with 8 DOF. A method of recognition and position measurement of the moving object is developed and built in the robot arm with a visual servo system which is consisted of two CCD cameras. To find the best grasping posture of the robot arm, the robot coordinate system and the camera coordinate system is i...