A closed loop feedback method for a manual bar straightener

Author

Miklosovic, Robert J. ; Gao, Zhiqiang

Author_Institution

Dept. of Electr. & Comput. Eng., Cleveland State Univ., OH, USA

Volume

1

fYear

2003

fDate

12-16 Oct. 2003

Firstpage

360

Abstract

Automation of a unique manually controlled industrial bar straightener is proposed. A continuous-time closed loop model is constructed in Simulink for an event-driven process through the use of asynchronous timers. The system is simulated with linear and nonlinear PD controllers. A nonlinear filter, called the tracking differentiator, is introduced as an alternative to a linear approximate means of providing accurate derivative feedback in the presence of noise. In both cases, the nonlinear techniques outperformed their linear counterparts while retaining tuning simplicity.

Keywords

closed loop systems; continuous time systems; feedback; industrial control; nonlinear control systems; spatial variables control; spatial variables measurement; three-term control; tuning; two-term control; ultrasonic measurement; PID controller; Simulink; asynchronous timers; closed loop feedback method; continuous-time closed loop model; cylindrical metal bar; derivative feedback; event-driven process; linear PD controllers; manual bar straightener; noise; noncontact ultrasonic sensor; nonlinear PD controllers; nonlinear filter; tracking differentiator; tuning simplicity; Computational modeling; Computer industry; Electrical equipment industry; Feedback loop; Industrial control; Length measurement; Nonlinear control systems; PD control; Rotation measurement; Shape measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2003. 38th IAS Annual Meeting. Conference Record of the

Print_ISBN

0-7803-7883-0

Type

conf

DOI

10.1109/IAS.2003.1257526

Filename

1257526