AN1948_D Freescale Semiconductor / Motorola, AN1948_D Datasheet - Page 9

• Manufacturer Part Number: AN1948_D
• Description: Real Time Development of MC Applications using the PC Master Software Visualization Tool
• Manufacturer: Freescale Semiconductor / Motorola

Freescale Semiconductor, Inc.
Development of Motor Control Applications Using PC Master Software
Figure 4-3. Visualization of Phase Current, Flux Linkage and
Position Reference Using Scope
4.3 Setting Controllers, Tuning Applications
Almost any motor control application utilizes controllers. Controllers are used for control of variables
of both the motor control algorithm and the control of the application algorithm itself. Motor speed,
current, voltage, flux linkage or motor torque are the most typical motor control variables. Pressure,
load, under-pressure, velocity, temperature, etc. are examples of typical application variables.
System controllers need to be set-up and tuned precisely to obtain optimal results for the control
process. Although theoretical analysis gives the preliminary values of the control parameters, mostly
they need to be tuned experimentally on a real system. During the tuning, both input and output
variables of controllers need to be observed.
PC master software simplifies the tuning of the controllers in real-time. It enables visualization of the
controlled variables, modification of the control parameters on-line and to immediately see the results.
The inputs and the outputs can be observed using the Scope or the Recorder. On one hand, the Scope
can be used for slowly changing variables, like for example, motor speed. On the other hand, the
Recorder can be used for fast changing variables, like phase current.
Figure 4-4
and
Figure 4-5
show a simple example of tuning a speed controller with help of the PC
master software Scope.
MOTOROLA
Real Time Development using the PC Master Software
9
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