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Discussion

Discussion: “A Simple Switching Control for Linear Systems to Assure Nonovershooting Step Responses” (Zhu, B., and Cai, K. Y., 2012, ASME J. Dyn. Syst. Meas., Control, 134, p. 034503)

[+] Author and Article Information
Robert Schmid

Department of Electrical and Electronic Engineering,
University of Melbourne,
Parkville, Victoria 3010, Australia
e-mail: rschmid@unimelb.edu.au

Here, we have corrected a typographical error in Eq. (5) of Ref. [3].

Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received April 10, 2013; final manuscript received April 15, 2014; published online July 9, 2014. Assoc. Editor: Qingze Zou.

J. Dyn. Sys., Meas., Control 136(5), 055501 (Jul 09, 2014) (2 pages) Paper No: DS-13-1153; doi: 10.1115/1.4027458 History: Received April 10, 2013; Revised April 15, 2014

This paper offers some comments on the article by Zhu and Cai (2012, “A Simple Switching Control for Linear Systems to Assure Nonovershooting Step Responses,” ASME J. Dyn. Syst. Meas., Control, 134, p. 034503). The authors offered a nonlinear switching scheme to obtain a nonovershooting step response from a linear plant, and motivated their method by showing that no linear Proportional-Integral-Derivative (PID) controller could achieve a nonovershooting response for a plant in the form of a triple integrator. In this paper, we show via an example that a linear state feedback controller in conjunction with a Luenberger observer can be found to achieve a nonovershooting response for a triple integrator.

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References

Zhu, B., and Cai, K. Y., 2012, “A Simple Switching Control for Linear Systems to Assure Nonovershooting Step Responses,” J. Dyn. Syst., Meas. Control, 134, p. 034503. [CrossRef]
Schmid, R., and Ntogramatzidis, L., 2010, “A Unified Method for the Design of Nonovershooting Linear Multivariable State-Feedback Tracking Controllers,” Automatica, 46, pp. 312–321. [CrossRef]
Schmid, R., and Ntogramatzidis, L., 2009, “Achieving a Nonovershooting Transient Response With Multivariable Dynamic Output Feedback Tracking Controllers,” Proceedings of 48th IEEE Conference on Decision and Control, Shanghai, pp. 5328–5332.
Pandey, A., and Schmid, R., 2012, “NOUS: A MATLAB® Toolbox for the Design of Nonovershooting and Nonundershooting Multivariable Tracking Controllers,” Proceedings of 2nd IEEE Australian Control Conference, Sydney, Australia, pp. 437–442. The toolbox may be downloaded at http://people.eng.unimelb.edu.au/rschmid/documents/NOUS1.1.zip
Hughes, M., Schmid, R., and Tan, Y., 2012, “Implementation of a Novel Nonovershooting Tracking Control Method on a LEGO® Robot,” Proceedings of 2nd IEEE Australian Control Conference, Sydney, Australia, pp. 289–294.
Schmid, R., and Goel, A., 2014, “Improved Tracking Control in Hard-Disk Drive Servo Systems: A Benchmark Case Study,” Proceedings of the 13th European Control Conference, Strasbourg France, June 24–27.

Figures

Grahic Jump Location
Fig. 1

Outputs from system (A, B, C) using the NOUS controllers

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