scholarly journals An Object-Based Software Package for Interactive Control System Design and Analysis

2003 ◽  
Vol 3 (4) ◽  
pp. 366-371 ◽  
Author(s):  
Yong Zhu ◽  
Bo Chen ◽  
Harry H. Cheng
Keyword(s):  
Control System ◽  
System Design ◽  
Software Package ◽  
Linear Time ◽  
Three Dimensional ◽  
Control System Design ◽  
Interactive Control ◽  
Analysis And Design ◽  
Object Based ◽  
Numerical Computing

Ch is an embeddable C/C++ interpreter. It was developed to allow software developers to use one language, anywhere and everywhere, for any programming task. Ch supports C99, a latest C standard ratified in 1999, and contains salient features for two and three dimensional plotting and numerical computing for applications in engineering and science. Developed in Ch, Ch Control System Toolkit provides a control class with member functions for object-based interactive modeling, analysis, and design of linear time-invariant control systems. The software package, available for downloading on the web, has been widely used in industry to solve practical engineering problems and in universities for instructional improvement. The design and implementation of Ch Control System Toolkit are described in this paper. Two application examples of control system design and analysis using Ch Control System Toolkit demonstrate its power and simplicity.

Object-Based Interactive Control System Design and Analysis

2003 ◽  
Author(s):  
Yong Zhu ◽  
Bo Chen ◽  
Harry H. Cheng
Keyword(s):  
Control System ◽  
System Design ◽  
Three Dimensional ◽  
Control System Design ◽  
Interactive Control ◽  
Analysis And Design ◽  
Modeling Analysis ◽  
Object Based ◽  
Practical Engineering ◽  
Numerical Computing

Ch is an embeddable C/C++ interpreter. It was developed to allow software developers to use one language, anywhere and everywhere, for any programming task. Ch supports C99, a latest C standard ratified in 1999, and contains salient features for two and three dimensional plotting and numerical computing for applications in engineering and science. Developed in Ch, Ch Control System Toolkit provides a control class with member functions for object-based interactive modeling, analysis, and design of control systems. The software package has been widely used in industry to solve practical engineering problems and in universities for instructional improvement. The design and implementation of Ch Control System Toolkit are described in this paper. An application example of control system design and analysis using Ch Control System Toolkit demonstrates its power and simplicity.

A Geometric Representation of Root Sensitivity

1994 ◽  
Vol 116 (2) ◽  
pp. 305-309 ◽  
Author(s):  
T. R. Kurfess ◽  
M. L. Nagurka
Keyword(s):  
Control System ◽  
System Design ◽  
Dynamic Systems ◽  
Linear Time ◽  
Sensitivity Function ◽  
Control System Design ◽  
Geometric Representation ◽  
Root Locus ◽  
Linear Time Invariant ◽  
Time Invariant

In this paper, we present a geometric method for representing the classical root sensitivity function of linear time-invariant dynamic systems. The method employs specialized eigenvalue plots that expand the information presented in the root locus plot in a manner that permits determination by inspection of both the real and imaginary components of the root sensitivity function. We observe relationships between root sensitivity and eigenvalue geometry that do not appear to be reported in the literature and hold important implications for control system design and analysis.

Analysis and Design of Repetitive Control Systems Using the Regeneration Spectrum

1991 ◽  
Vol 113 (2) ◽  
pp. 216-222 ◽  
Author(s):  
K. Srinivasan ◽  
F.-R. Shaw
Keyword(s):  
Control System ◽  
System Design ◽  
Control Systems ◽  
Repetitive Control ◽  
Characteristic Root ◽  
Rational Approach ◽  
Control System Design ◽  
Analysis And Design ◽  
Sensitivity Functions ◽  
Insight Into

The absolute and relative stability of continuous-time SISO repetitive control systems is examined here using a function of frequency termed the regeneration spectrum. The regeneration spectrum is easily computed and is related to important features of the characteristic root distribution of such systems, for large values of the time delay. The regeneration spectrum is combined with other frequency domain measures of control system performance such as the sensitivity and complementary sensitivity functions to obtain improved insight into the tradeoffs in repetitive control system design. The result is a more rational approach to repetitive control system design and is illustrated by an example.

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