QxDesign can help you understand controls better!

QxDesign products make controls easier to understand and easier to apply. The principles of controls were developed to solve practical problems. Properly applied, these principles save time and make control systems perform better. At QxDesign, we focus on the fundamentals, teaching intuition and avoiding unnecessary math.

Click here to see what's new at QxDesign.

Learn about control systems with
QxDesign simulation software and books

Visual ModelQ graphical environment for simulating control systems.

Easy. Capable.
Great value.

Control System Design Guide (3nd Ed.) published by Academic Press in 2004.

The principles of controls applied to practical systems.

Observers in Control Systems published by Academic Press in 2002.

An intuitive guide to using observers.

Original ModelQ simulation program for control systems.

A complement to Control System Design Guide (2nd. Ed.).

 


What's New at QxDesign

10-04: Visual ModelQ MDI releases
Visual ModelQ Version 6.2.0 for Multiple Document Interface (MDI) releases October 2004. MDI is the Windows standard that lets you edit multiple documents in one application. Now you can open and run multiple models simultaneously, and cut-and-paste from one model to another. Also, many new blocks have been added including a 16-channel data logger, a 4-channel Live Scope, and linear interpolation blocks. Click here.

2-04: Control System Design Guide (3rd Ed.) publishes
Control Systems Design Guide (3rd Ed.) published by Academic Press in February, 2004 and expected to reach Amazon.com shortly. The third edition is a thorough rewrite of the second edition. All models are based on Visual ModelQ, a fully-graphical modeling environment providing readers more features and more understandable results. Two chapters on observers have been added. Questions have been added to each chapter for classroom use. Click here.

2-04: Visual ModelQ Version 6.0.10 releases
Version 6.10.0 releases February, 2004. This version includes a new properties window that allows uses to adjust parameters more easily. It also adds a right-click Insert Block function that reduces key clicks when adding blocks. Also, the Insert and Wire Block function adds and automatically wires blocks. Click here.

6-03: Visual ModelQ Version 6.0.9 releases
Version 6.0.9 releases June 27, 2003. This version includes the addition of several blocks including the MIN and MAX blocks (Logic tab), a full complement of trig functions (Trans Tab), the clamped sum block (Digital Tab), and a moving average filter (Digital Filters Tab). Also, when loading new models, the model palette screen automatically resizes if necessary to show the entire model.

11-02: Visual ModelQ Version 6.0.6 releases
Version 6.0.6 releases November 30, 2002. This version improves on-screen control functions through the Live Button and Live Relay. Also, several preprogrammed blocks have been added including Lead-Lag filters, z-Domain filters, and Y^x. Visual ModelQ now provides over 140 preprogrammed blocks, including user-coded blocks allowing users to write functions in a subset of the C Programming Language. Click here.

10-02: Visual ModelQ Training
Detailed model for regenerative voltage in servo systems added to training set. Click here.

10-02: Visual ModelQ Training
Multipart training for Visual ModelQ, published to accompany Reference Manual and User's Guide. Click here.

9-02: Visual ModelQ Version 6.0.1 releases
Visual ModelQ, a fully-graphical control-system simulation environment releases. Click here.

8-02: Observers in Control Systems publishes
Observers in Control Systems published by Academic Press in August, 2002 and expected to reach Amazon.com shortly. Observers are software structures that improve the quality of feedback signals by using knowledge of the system. Observers in Control Systems presents observers with an intuitive approach. Click here.


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