Mach-DSP User’s Manual
Document Number: MACH-DSP-9021
Page 75
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8.4
Error Modifier (and other nonlinear correction tables)
The Mach-DSP includes an Error Modifier, which can be used to progressively limit the
amplitude of the Position Error signal, before it is fed to the Summing node. This helps
to eliminate overshoot when squarewaves or unstructured commands are used as an
input. The net result is similar to a Slew Rate Limiter, but the Error Modifier can do this
progressively, thus helping to achieve better overall performance with a wide variety of
step sizes. The Error Modifier is accessed on the Tools menu as shown below.
(The latest version of the software calls this “Nonlinear correction” and the window now
provides access to Torque-vs-position rolloff and Magnetic Spring Return as well.)
