Abstract To improve accuracy and robustness of interactive aerial robots, the knowledge forces acting on platform is uttermost importance. The robot should distinguish interaction from external disturbances in order to be compliant with firsts reject seconds. This represents a challenge since might different nature (physical contact, aerodynamic, modeling errors) applied points robot. work pres...

background: mechanical torque limiting devices (mtlds) are necessary tools to control a peak torque and achieving target values of screw component of dental implants. due to probable effect of autoclaving and number of use on the accuracy of these devices, this study aimed to evaluate the effect of sterilization and number of use on the accuracy of friction-style mechanical torque limiting devi...

Do you sometimes have a gut feeling? Having a gut wrenching experience? If we look superficially at the gut, it is a pretty simple structure, a long tube with one hole at each end, and two side branches, the billiary and pancreatic ducts. Its purpose is intake, digestion, absorption, nutrient extraction and excretion.1 However, it is smarter and more complex than that. The gut is the only organ...

Do you sometimes have a gut feeling? Having a gut wrenching experience? If we look superficially at the gut, it is a pretty simple structure, a long tube with one hole at each end, and two side branches, the billiary and pancreatic ducts. Its purpose is intake, digestion, absorption, nutrient extraction and excretion.1 However, it is smarter and more complex than that. The gut is the only organ...

modeling and wrench feasible workspace analysis of a spatial cable suspended robots is presented. a six-cable spatial cable robot is used the same as stewart robots. due to slow motion of the robot we suppose the motion as pseudostatic and kinetostatic modeling is performed. various workspaces are defined and the results of simulation are presented on the basis of various workspaces and applied...

in direct torque control, the selection of an applied voltage vector is based on the measuredparameters at the beginning of the sampling period. the delay between the measurement and the application of the voltage vector is the origin of an extra torque ripple. in this paper, a new predictive controller is proposed for compensating this delay and reducing the torque ripple. the stator current i...

in conventional direct torque control (dtc), the stator flux is usually kept constant by controlling the x-axis component of the stator voltage in the stator flux reference frame. the torque is then controlled by the y-axis component of stator voltage. in this scenario, the stator current does not exceed its permissible value. however, in the so-called optimal efficiency mode, the induction mot...