Kinematic and stability motion limits for a hexapod walking machine
Dunton, Elizabeth Marie.
McGhee, Robert B.
Zyda, Michael J.
MetadataShow full item record
The major problem addressed by this research is to investigate and implement the basic concepts necessary to lay the groundwork for efficient forms of motion planning, motion control, and gait algorithms with respect to hexapod walking machines. Specifically, the approach taken was to develop and implement the concepts of a stability margin and a joint space motion margin on an object-oriented representation of the Aquarobot. The model was generated in Franz Common Lisp and simulated via Allegro Common Windows. A method by which distance computations can be calculated and applied to the center of mass and triangular support pallem of a walking machine to determine the stability margin is introduced. Inverse kinematics and joint limits are utilized to ascertain the joint space motion margin of the model. Response to impending instability and the effect when ajoint hits or approaches ajoint kinematic limit on the motion of the hexapod walking machine by stopping the model is also addressed. The results are as follows: the concepts of the joint space motion margin and the stability margin can be successfully implemented on a kinematic model and graphical simulation of a hexapod walking machine. These concepts contribute to future work in the area of more efficient free gait algorithms, specifically asynchronous gait algorithms. (AN)
Showing items related by title, author, creator and subject.
NPSNET: a graphical based expert system to model P-3 aircraft interaction with submarines and ships Schmidt, Dennis Arvin (Monterey, California. Naval Postgraduate School, 1993-06);This thesis develops the mathematical relationships necessary to implement alternating tripod gaits on the hexapod underwater walking machine, AquaRobot. Analysis of documentation and application of Denavit-Hartenberg ...
Schue, Charles Andrew, III (Monterey, California. Naval Postgraduate School, 1993-06);This thesis develops the mathematical relationships necessary to implement alternating tripod gaits on the hexapod underwater walking machine, AquaRobot. Analysis of documentation and application of Denavit-Hartenberg ...
McGhee, Robert B.; Kwak, Se-Hung (Monterey, California. Naval Postgraduate School, 1990-12); NPS-CS-91-006This study investigates the utility of rule based coordination of motion for ternary-type terrain locomotion by a hexapod walking machine. The ternary-type terrain considered is composed of permitted areas, forbidden areas, ...