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Adaptive tackling of the swinging problem for a 2 DOF crane – payload system
Tar, József K.; Rudas, Imre J.; Bitó, János F.; Machado, J. A. Tenreiro; Kozłowski, Krzysztof R.The control of a crane carrying its payload by an elastic string corresponds to a task in which precise, indirect control of a subsystem dynamically coupled to a directly controllable subsystem is needed. This task is interesting since the coupled degree of freedom has little damping and it is apt to keep swinging accordingly. The traditional approaches apply the input shaping technology to assist the human ope...
Fixed point transformations in the adaptive control of fractional-order MIMO sy...
Tar, József K.; Rudas, Imre J.; Nádai, László; Kozłowski, Krzysztof R.; Machado, J. A. TenreiroThough the formal mathematical idea of introducing noninteger order derivatives can be traced from the 17th century in a letter by L’Hospital in which he asked Leibniz what the meaning of D n y if n = 1/2 would be in 1695 [1], it was better outlined only in the 19th century [2, 3, 4]. Due to the lack of clear physical interpretation their first applications in physics appeared only later, in the 20th century, i...
Application of robust fixed point transformations for technological operation o...
Tar, József K.; Rudas, Imre J.; Kozłowski, Krzysztof R.; Machado, J. A. TenreiroA robot’s drive has to exert appropriate driving forces that can keep its arm and end effector at the proper position, velocity and acceleration, and simultaneously has to compensate for the effects of the contact forces arising between the tool and the workpiece depending on the needs of the actual technological operation. Balancing the effects of a priori unknown external disturbance forces and the inaccuraci...
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