Real-time robust adaptive fuzzy fractional-order control of electrically driven flexible-joint robots has been addressed in this paper. Two important practical situations have been considered: the fact that robot actuators have limited voltage, and the fact that current signals are contaminated with noise. Through of a novel voltage-based fractional order control for an integer-order dynamical ...

Relapsing polychondritis is a cartilage tissue disease characterized by inflammatory and destructive episodes. Elastic cartilage of the ear and nose, hyaline cartilage of the joints, hyaline cartilage of vertebra and trachea are the main involvement areas. Also organs having proteoglycan structure such as eyes, heart, blood vessels, and the inner ear can be affected. In this article otologic fi...

Continuum manipulators are robotic manipulators built wing one continuous, elastic, and highly deformable %ackbone” instead of multiple rigid links connected by joints. This paper eztends a previous control result for planar continuum robots b y proposing a new asymptotic wnvergence argument for a PD-plw-feedforward controller. The benefit of the asymptotic a w m e n t s is that the backbone be...

Continuum manipulators are robotic manipulators built using one continuous, elastic, and highly deformable “backbone” instead of multiple rigid links and joints. I n previous work, we illuminated various kinematic and dynamic properties of continuum robots, but the question of controller design remained open. This paper presents a basic result for continuum robots that has long been knoum for r...

Theoretically, parallel kinematics machine tools should be very accurate and rigid due to their closed loop structure and no error accumulation characteristics. Unfortunately, these theoretical presumptions have not been confirmed in practice, due to manufacturing and assembly errors, kinematic errors in the actuators and joints, elastic deformations due to the gravity, thermal deformations, li...

A cam driving a lumped inertia through a massless, elastic, slider-crank fol­ lower linkage with two concentrated masses located at the pin joints is considered. An iterative procedure taking the elasticity, damping, and changing geometry of the linkage into account is developed for synthesizing the cam profile to produce a desired output motion at a given design speed. The steady state solutio...

An effective strategy for walking over rough terrain, flat plane, and wreckage includes transitioning from quadrupedal to bipedal locomotion. In this study, we designed a trunk mechanism that provides successful posture transition from quadrupedalism to bipedalism. The proposed trunk mechanism imitates the human trunk with redundant joints and elastic muscles supporting the trunk. The simulatio...

This paper is devoted to calculating the Cartesian stiffness matrix of a translational parallel manipulator with elastic joints. The calculation takes into account the contribution of the Jacobian variation because of the change of manipulator configuration due to the elasticity and it covers the entire theoretical workspace of the manipulator. Three kineto‐static adimension...

Abstract Key message Mechanical models of inosculations benefit from moderate geometric detail and characterisation the structurally optimised area interwoven tension-resistant fibres between branches. Living architecture is formed by shaping merging trees, often in combination with non-living technical elements. These structures employ mechanical physiological adaptations living trees to suppo...