is a serious program for the analysis of linear, closed-loop control
systems. Its designed for the experienced engineer or engineering
student. Because the download also includes a thorough, clearly
written 77-page Users Guide, RootLocus is a useful tool for
anyone who wants to learn, understand, and conveniently use the
root locus method. Learning is facilitated by several built-in examples
that can be computed and plotted automatically.
quickly and easily plots a root locus using an open-loop transfer
function that you provide. Simply enter the numerator and denominator
coefficients, select the gain range, and choose a plotting density.
Click the Calculate button and the root locus is instantly plotted.
the scrollbar to vary the loop gain and watch the poles move along
the locus. Observe the current gain value and pole coordinates in
the adjacent tabular window. Click a button to plot either the step
or frequency response for the selected gain and pole positions.
Automatically estimate the damping factor of second-order systems.
Zoom in on the root locus plot to examine areas of interest.
easily, and confidently find the conditions for stability and instability.
Easily evaluate the conditions needed for the system performance
can also plot Bode plots. It's informative to compare the stability
results obtained using Bode methods with the results obtained using
root locus methods.
(RL.zip, Ver. 6.01, 2.3MB)
you've begun playing the popular new game Sudoku, you will enjoy
using this program. Called Sudoku Playing Palette, the program
takes the unnecessary work out of playing Sudoku. It doesn't play
the game for you but it reduces the need for the player to figure
out what numbers may be played at each location. It eliminates the
scribbling of notes inside the game. By relieving this tedious aspect
of Sudoku, it allows you to concentrate on the correct logical choices.
In short, it lets you simply play! (SudokuPalette.zip,
Ver. 3.42, 2.0MB)
searches ASCII files through subfolders and looks for multiple strings.
is an excellent tool for programmers because it can be used to find
sets of commands and parameters in source code listings, something
typically not possible when using standard code editors. This was
the reason for Grepsub's creation.
Ver. 4.21, 1.4 MB)
all file space in the selected folder and all of its subfolders.
This is useful if you make backups and need to know that the folder
you are about to back up will not exceed the available space on
your backup medium. (Byte_Counter.zip,
Ver. 1.2, 549 KB)
version with bug fixes. Searches the selected drive for the
largest files on that drive. This is useful if you are running out
of space on a disk or partition. By identifying the largest files
(e.g., redundant image or video files) you can decide if you need
to keep that file or if the file can be deleted to yield additional
disk space. You can search for all files or files of particular
names or extensions. Wild cards can be used. (Big_Files.zip,
Ver. 5.11, 1.47 MB)
tool can be used to determine if a selected set of feedback taps
implements a linear, maximal, pseudorandom shift register configuration
for a shift register of a given length. Thus, it can be used to
determine if a proposed hardware design will be maximal.
64-bit version uses 36 stages. The 32-bit version still uses 32
Ver. 2.02, 1,357 KB)
(Pseudo_Rand_64.zip, Ver. 2.04
- 64 Bit, 2,068 KB)
leading line numbers to an ASCII file. This is useful for documenting
software source code. (Line_Number.zip,
you use a stock broker that uses commissions of fixed amounts, not
a percentage of the purchase/sell price, this utility can be helpful
for establishing prices for limit orders. Given the purchase price,
the number of shares, the purchase commission, and the sell commission,
you can simply enter the desired profit (or loss) as a percentage
and automatically calculate the per-share sell price required to
achieve the desired profit (or loss). (Stock_Pricer.zip,
the best possible resistor pairs such that either: (1) their ratio
is as close as possible to a desired ratio; or, (2) an unloaded
voltage divider delivers a voltage as close as possible to a desired
voltage. This may seem trivial, especially for the old engineers
who used to use a slide rule for this task. But your method might
not find the best pair. (Naturally, any resistors you use
will have inherent errors. However, by using the best pair, you
can avoid an avoidable "designed-in" error.)
makes choosing the best pair simple. You can select among resistor
sets having tolerances of 0.1%, 0.25%, 0.5%, 1%, 2%, and 5%.
might be interested to know that the original version of this program
was published in the now-defunct Kilobaud Microcomputing,
April 1980, pp. 142-144. Though its modern version is written in
C++ for 32-bit Windows, it was originally written in Basic for use
on a Commodore PET. (Resist.zip, Ver. 2.20,
strips out the audio data from a WAV file and puts it into its own
file. It puts the header information into a second file. Both files
can be read by Excel and Mathcad, enabling analysis of the WAV file
contents. WAVRead works with most, but not all, WAV files. (WaveRead.zip,