New Windows version with extensive dialog boxes
Graphical display of machine setup configuration
Programmable test "scripts" and enhanced real time
Extensive machine health monitoring
The WinWAM software can operate all WAM test machines, including
WAMhs and WAMsc2. WinWAM is a menu-driven package designed for operator
interface with tribological parameters for control, monitoring and
data acquisition. From the main screen the operator can utilize
a test setup screen, machine setup screen, temperature control screen,
load display screen, PMAC controller screen, calibration screen,
log data screen, run script screen and data capture screen. The
WinWAM software is completely documented in a reference manual.
The software has proven to be a good tool for new operators and
a valuable asset for a highly flexible tribology testing environment.
WinWAM software is supplied with the purchase of all WAM
WinWAM software allows the user of WAM machines
to control the machine functions and collect and display data. The
software allows WAM machines to perform traction tests with input
of parameters, such as entraining velocity and percent slip. The
test parameters are converted into the required motor speed, applied
forces, and positional data that the machine requires. The resulting
velocities and forces are measured and converted back into tribological
units, such as entraining velocity, sliding velocity and traction
coefficient. Test parameters are plotted in real time and logged
to a file. The performance of the WAM test system is constantly
monitored, and the operator is notified in the event of a problem.
The WinWAM user interface is based on the MS Windows operating
system. The machine interaction interface runs on a Delta-Tau
Pmac2 motion controller. The Pmac2 system controls all speeds and
positions, captures and filters the load and temperature data, and
controls the heating/cooling outputs.
The WinWAM software provides several functional screens for easy
operation (see figure). The Main Screen allows the user to enable
various systems and to start a test. The center of the Main Screen
displays a real time plot of selected variables. A Calibration Screen
allows the user to adjust the calibration of all load cells, thermocouples
and the clinometer. A Test Setup Screen includes a description of
the test, test fluid, specimen identification and materials. The
disc track diameter, ball or roller diameter and lube pump speed
are also entered in the Test Setup Screen. A Machine Setup Screen
allows the operator to control and monitor the position of the contact
on the disc. The tilt angle of the ball or roller is also displayed.
The specimen positions are shown both graphically and numerically.
Pure rolling can be found by either manually positioning the X-axis
and Y-axis, or by using a "PureRolling" button. The PureRolling
button initiates a sequence of actions that finds pure rolling without
operator intervention. Pure rolling is achieved when all horizontal
X and Y forces are zero.
A Temperature Control Screen allows the user to input temperature
set points, heating or cooling modes, heating power and cycle times.
A Log Data Screen allows the user to select the variables that are
written to a log file. The time period for logging is also selected.
There is no limit to the number of variables that can be checked
for logging. A Script File Screen is used for automating test protocols.
While the script is running, the executing line is highlighted,
and a status window shows the loop counts, ramp time and other parameters.