The ACROBOTER platform - Part 2: Servo-constraints in computed torque control

Ambrus Zelei, G. Stépán

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The paper presents the motion control of the ceiling based service robot platform ACROBOTER that contains two main subsystems. The climbing unit is a serial robot, which realizes planar motion in the plane of the ceiling. The swinging unit is hoisted by the climbing unit and it is actuated by windable cables and ducted fans. The two subsystems form a serial and subsequent closed-loop kinematic chain segments. Because of the complexity of the system we use natural (Cartesian) coordinates to describe the configuration of the robot, while a set of algebraic equations represents the geometric constraints. Thus the dynamical model of the system is given in the form of differential-algebraic equations (DAE). The system is under-actuated and the the inverse kinematics and dynamics cannot be solved in closed form. The control task is defined by the servo-constraints which are algebraic equations that have to be considered during the calculation of control forces. In this paper the desired control inputs are determined via the numerical solution of the resulting DAE problem using the Backward Euler discretization method.

Original languageEnglish
Title of host publicationSolid Mechanics and its Applications
Pages11-18
Number of pages8
Volume30
DOIs
Publication statusPublished - 2011
EventIUTAM Symposium on Multibody Dynamics and Interaction Control in Virtual and Real Environments - Budapest, Hungary
Duration: Jun 7 2010Jun 11 2010

Publication series

NameSolid Mechanics and its Applications
Volume30
ISSN (Print)18753507

Other

OtherIUTAM Symposium on Multibody Dynamics and Interaction Control in Virtual and Real Environments
CountryHungary
CityBudapest
Period6/7/106/11/10

Fingerprint

Torque control
torque
platforms
robots
Ceilings
Robots
ceilings
Differential equations
ducted fans
differential equations
Inverse kinematics
Force control
Motion control
inverse kinematics
Fans
Cartesian coordinates
Kinematics
Cables
fans
cables

ASJC Scopus subject areas

  • Aerospace Engineering
  • Automotive Engineering
  • Civil and Structural Engineering
  • Mechanical Engineering
  • Acoustics and Ultrasonics

Cite this

Zelei, A., & Stépán, G. (2011). The ACROBOTER platform - Part 2: Servo-constraints in computed torque control. In Solid Mechanics and its Applications (Vol. 30, pp. 11-18). (Solid Mechanics and its Applications; Vol. 30). https://doi.org/10.1007/978-94-007-1643-8_2

The ACROBOTER platform - Part 2 : Servo-constraints in computed torque control. / Zelei, Ambrus; Stépán, G.

Solid Mechanics and its Applications. Vol. 30 2011. p. 11-18 (Solid Mechanics and its Applications; Vol. 30).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zelei, A & Stépán, G 2011, The ACROBOTER platform - Part 2: Servo-constraints in computed torque control. in Solid Mechanics and its Applications. vol. 30, Solid Mechanics and its Applications, vol. 30, pp. 11-18, IUTAM Symposium on Multibody Dynamics and Interaction Control in Virtual and Real Environments, Budapest, Hungary, 6/7/10. https://doi.org/10.1007/978-94-007-1643-8_2
Zelei A, Stépán G. The ACROBOTER platform - Part 2: Servo-constraints in computed torque control. In Solid Mechanics and its Applications. Vol. 30. 2011. p. 11-18. (Solid Mechanics and its Applications). https://doi.org/10.1007/978-94-007-1643-8_2
Zelei, Ambrus ; Stépán, G. / The ACROBOTER platform - Part 2 : Servo-constraints in computed torque control. Solid Mechanics and its Applications. Vol. 30 2011. pp. 11-18 (Solid Mechanics and its Applications).
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