The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 20, 2007
Filed:
Aug. 04, 2004
Cheng-ching Yu, Taipei, TW;
Shih-bo Hung, Taipei, TW;
Yu-chang Cheng, Sanchong, TW;
National Taiwan University, Taipei, TW;
Abstract
In the present invention, a Smith predictor enhanced PID controller, SP-PID, is proposed. A tuning parameter Kis devised and the SP-PID controller would be gradually transformed from a PID controller to a Smith predictor as Kchanges from 0 to 1. Properties of the SP-PID are explored and the design procedure is given to ensure a certain degree of robustness. Simulation results clearly indicate that the SP-PID takes advantage of the SP when small modeling error is encountered and it is gradually detuned to a PID controller, a user-friendly controller, when the model quality degrades. Moreover, the controller and its design procedure can be implemented in current process control computers with virtually no extra hardware cost.