Position Response Types - Parker P Series User Manual

Parker Hannifin
In contrast, if the system is unstable, no matter how small the position set-point or how little a
disturbance (motor torque variation, load change, noise from the feedback device, etc.) the system
receives, the position error will increase exponentially in almost all cases. In practice, when the
system experiences instability, the actual position will oscillate in an exponentially diverging
fashion as shown in Table 38.
One common misperception is that whenever there is oscillation, the system is unstable. It is
important to recognize that a system is considered stable if the oscillation finally diminishes
(damps out), even if it takes a long time.

8.3.2 Position Response Types

P series EtherCAT Drive User Guide
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