Dynamic modeling of stick-slip motion in a legged, piezoelectric driven microrobot

Kamali Eigoli, A ; Sharif University of Technology | 2010

505 Viewed
  1. Type of Document: Article
  2. Publisher: 2010
  3. Abstract:
  4. The motion of a stick-slip microrobot propelled by its piezoelectric unimorph legs is mathematically modeled. Using a continuously distributed mass model for the robot's body, the working equation of the mechanism is derived based on the assumption of linear Euler-Bernoulli beam theory and linear piezoelectric behavior. Moreover, the required condition for generating net motion is calculated in terms of physical characteristics of the microrobot. It is demonstrated that the higher the friction constant, then a lower average speed is obtained. Also, it is shown that a microrobot with heavier legs can move in a rougher environment. Regardless of the mass proportion between robot's main body and its legs, a certain level of speed can, always, be achieved. The proposed results will be well suited to design, construct, and control the microrobots moving with piezoelectric benders, as their feet
  5. Keywords:
  6. Microrobot ; Analytical modeling ; Dynamic modeling ; Euler Bernoulli beam theory ; Friction constants ; Lower average ; Mass models ; Mass proportion ; Micro robots ; Physical characteristics ; Piezoelectric behavior ; Piezoelectric benders ; Piezoelectric unimorph ; Stick slip motion ; Stick-slip ; Working equations ; Data communication equipment ; Piezoelectricity ; Slip forming ; Piezoelectric actuators
  7. Source: International Journal of Advanced Robotic Systems ; Volume 7, Issue 3 , September , 2010 , Pages 201-208 ; 17298806 (ISSN)
  8. URL: http://journals.sagepub.com/doi/full/10.5772/9704