Reducing position error of cantilevered loads in motion systems
Refaat, Sameh and Nahavandi, Saeid 2001, Reducing position error of cantilevered loads in motion systems, in 2001 IEEE International Conference on Systems, Man & Cybernetics : e-systems and e-man for cybernetics in cyberspace : October 7-10, 2001, Tucson Convention Center, Tucson, Arizona, United States, IEEE Xplore, Piscataway, N.J., pp. 3175-3180.
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2001 IEEE International Conference on Systems, Man & Cybernetics : e-systems and e-man for cybernetics in cyberspace : October 7-10, 2001, Tucson Convention Center, Tucson, Arizona, United States
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The positioning error of a large cantilevered mass that is actuated at its supported end is minimized as this mass travels at challenging high speeds and accelerations. An integrated approach is adopted to realize the task. After selecting the appropriate actuator that would provide higher rigidity, the system is viewed as a multi-degree of freedom system, and hence the concept of system-generated disturbance is introduced. This allows the use of appropriate mechanical design considerations and a proper generation of the kinematics commands to minimize such disturbance. A disturbance observer is then designed to detect and compensate the remaining disturbance, hence minimizing the positioning error.
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