Título: | STEPPER MOTOR CONTROL APPLIED TO A ROBOTIC MANIPULATOR | |||||||
Autor: |
WILLIAM SCHROEDER CARDOZO |
|||||||
Colaborador(es): |
MARCO ANTONIO MEGGIOLARO - Orientador |
|||||||
Catalogação: | 03/DEZ/2012 | Língua(s): | PORTUGUESE - BRAZIL |
|||||
Tipo: | TEXT | Subtipo: | THESIS | |||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
|||||||
Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=20783&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=20783&idi=2 |
|||||||
DOI: | https://doi.org/10.17771/PUCRio.acad.20783 | |||||||
Resumo: | ||||||||
Stepper motors are used in most applications in open loop. However, the
limitations of this type of control have encouraged the development of new
techniques for closed loop control. Stepper motors have a good relationship
between torque and cost, making it attractive for applications in robotic
manipulators. But the limitation of traditional control deteriorates the performance
of the manipulator. The most common form of closed loop control of stepper
motors require an encoder directly coupled to the motor shaft. However, this is not
always practical. In some cases, it is necessary to control the position of some
system component that can’t be precisely known from the position of the motor.
This work proposes a control technique that receives feedback from an encoder,
not directly coupled to the motor shaft, and generates a sequence of pulses to the
stepper motor driver. This pulse train is done so as not to require excessive
accelerations, and thus prevent the loss of step. The model of a system using this
controller is built using Simulink/MATLAB. A robotic manipulator of six degrees
of freedom, using stepper motors, is designed and built to validate the presented
control techniques, implemented on a PIC18F2431 microcontroller. The obtained
absolute accuracy is 1,3mm and repeatability 0,5mm , proving the efficiency of
the proposed control technique.
|
||||||||