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The design, implementation, and evaluation of a miniature biped robot for urban reconnaissance are presented. Design specifications for mobility, space requirement, weight, sensing, and control are defined. A revolute hip joint is selected based on its enhanced mobility and capability to function in reasonably confined spaces. Small size dictates minimal(More)
In comparison to wheeled robots, spherical mobile robots offer greater mobility, stability, and scope for operation in hazardous environments. Inspite of these advantages, spherical designs have failed to gain popularity due to complexity of their motion planning and control problems. In this paper, we address the motion planning problem for the rolling(More)
Four different methods of hand prosthesis control are developed and examined experimentally. Open-loop control is shown to offer the least sensitivity when manipulating objects. Force feedback substantially improves upon open-loop control. However, it is shown that the inclusion of velocity and/or position feedback in a hybrid force-velocity control scheme(More)
This paper presents a time invariant kinematic motion controller for wheeled mobile robots. Actuator capability, mechanical design, and traction forces governed by terrain features provide velocity and curvature limitations that are used in the design of the controller. A novel path manifold that considers curvature limitations is introduced to provide a(More)
Posture stabilization of a compliant framed modular mobile robot is the subject of this paper. This is a new type of wheeled mobile robot that has advantages of a simple modular design that provides full suspension and steering capability without any additional components. Steering is achieved by coordinated control of the individual wheels in order to(More)
A new bipedal mobile robot design that combines the benefits of rolling, walking, and climbing locomotion is discussed. The design provides these locomotion primitives without the addition of actuators beyond those required for climbing through the use of a disk-like exoskeleton that provides a rolling surface. Small joint oscillations control the center of(More)
Kinematic models and motion control algorithms for a two-axle compliant frame mobile robot are examined. General kinematics describing the compliantly coupled nonholonomic kinematics are derived using velocity constraints that minimize traction forces and consider foreshortening of the frame. Given the complexity of these equations, the steering ratio a is(More)