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Ch Control System Toolkit 2.5 Released

DAVIS, Calif., July 28, 2008 - SoftIntegration, Inc., the leader of scripting technology for ubiquitous computing, today announced the release of Ch Control System Toolkit version 2.5. Ch is a superset of C interpreter for scripting, 2D/3D plotting, numerical computing, shell programming and embedded scripting. Ch Control System Toolkit is designed for modeling, design, and analysis of continuous-time or discrete-time linear time invariant (LTI) control systems. Ch Control System Toolkit supports most classical and modern control techniques through object-oriented programming based on a control class. It is simple and easy to use.

The new released Ch Control System Toolkit added member functions to compute a compensator's zero, pole, and gain; the dominant pole based on the percent overshoot or damping ratio; and characteristic information of step responses. The modeling, design, and analysis of control systems can be easily performed on line using a Web browser without any software installation, configuration and computer programming.

A control system can be modeled in the form of transfer functions, zero-pole-gain, or state-space. Ch Control System Toolkit can perform analysis and design of control systems in both time and frequency domains with extensive graphical plotting capabilities. In addition, it can seamlessly interface existing C/C++ code in either source code or binary libraries without re-compilation.

Below is the root locus plot from a program using Ch Control System Toolkit running across different platforms.


Ch Control System Toolkit contains the following major features:

  • C/C++ Compatible
    Different from other similar control software packages, programs written in Ch Control System Toolkit can seamlessly. interface existing C/C++ code in either source code or binary static/dynamical libraries without re-compilation.

  • Object-Oriented
    Implemented as a class, Ch Control System Toolkit is object-oriented.

  • Embeddable
    With Embedded Ch, Ch programs using Control System Toolkit can be embedded in other C/C++ application programs.

  • Web-Based
    Using the Web-based control design and analysis system in the Ch Control System Toolkit, design and analysis of control systems can be performed through the Web using a Web browser over the internet without any software installation, system configuration and programming.

  • Model Building
    Support multiple model representations such as state-space models, transfer function, and zero-pole-gain models both for continuous-time and discrete-time linear time invariant (LTI) systems. When a system is created using one of these three models, the Ch Control System Toolkit automatically converts it to other two models internally and keeps the information of these three models for user to retrieve.

  • Continuous/Discrete Systems Conversions
    Provide the capability of converting from continuous to discrete, discrete to continuous, and discrete to discrete system.

  • System Interconnecting and Reduction
    Construct arbitrary complex system models given in a block diagram form by using interconnecting member functions.

  • Time Domain Analysis
    Compute the time responses to arbitrary inputs and initial conditions for both SISO and MIMO systems. The typical inputs are step and impulse inputs. The output responses can be displayed by either a plot or a data set.

  • Frequency Domain Analysis
    Generate commonly used frequency response plots of Bode, Nyquist and Nichols plots. Calculates the bandwidth, DC gain, gain and phase margins of a SISO system for system dynamics and stability analysis.

  • Root Locus Design
    Calculate and plots the root locus of a SISO system.

  • Controllability and Observability
    Construct the controllability and observability matrices. Determines the controllability and observability of systems. Calculates the controllability and observability grammians of a state-space model.

  • State-Space Design
    Find the control-law and estimator that will allow the user to select a set of pole locations for a satisfactory system dynamic response.

  • Optimal Control System Design and Equation Solvers
    Calculate LQ-optimal gain for both continuous and discrete systems. Solves continuous and discrete-time Lyapunov equations.

  • Plotting Utilities
    Provide many plotting functions to allow output visually displayed or exported as external files with a variety of different file formats. They can also readily be copied and pasted in other applications such as Word in Windows.

Ch Control System Toolkit is based on Ch Professional Edition. It is free for academic use and costs $299 for commercial or personal use. It can run across platform in Windows 95/98/Me/NT/2000/XP/Vista, Linux, Mac OS X, Solaris, HP-UX, FreeBSD, and QNX.

About SoftIntegration, Inc.

SoftIntegration, Inc., founded in 1999, is the leader of scripting technology for ubiquitous computing. SoftIntegration provides infrastructure software and services for rapid application development and deployment, scientific numerical computing, embedded scripting, and Web-based software integration. Our flagship product -- Ch® is an embeddable C/C++ interpreter. It is the solution for engineers and scientists, Web programmers, software developers, C/C++ beginners and experts, system administrators, real-time programmers, quality analysts, and instructors and professors.


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Ch and SoftIntegration are registered trademarks of SoftIntegration, Inc. Microsoft and Windows are trademarks of Microsoft Corporation. Solaris is a trademark of Sun Microsystems, Inc. Unix is a trademark of the Open Group, HP-UX is a trademark of Hewlett-Packard Co. Linux is a trademark of Linus Torvalds.