TPS (Torque Pulse Simulation) OA Polygon (Open Architecture) application
Polygon application for internal combustion engine test stands
The OA application polygon is a mathematical signal generator that generates a periodic signal from predefined values.
The mathematics function can be described as: Output(t, X)=A(t)*Y(X+S(t))+O(t).
It can be changed at runtime via BICO.
The function runs in the current-controller cycle (Booksize 31.25 µs).
The signal is generated on the basis of a values table or via a simple cam function that can be imported with as many as 10,000 interpolation points via Excel. These interpolation points are stored as dynamic array in the SINAMICS S120.
The output value Y depends on X, e.g. from the current actual encoder value, position or electrical angle.
Phase and amplitude corrections for the damping or delay compensation in the system are possible.
A signal frequency to above 1 kHz can be attained.