Z-Type Observer Backstepping for Induction Machines

Sensorless Control of Induction Machine Supplied by Current Source Inverter

“…The transistor's impulse frequency was 10 kHz. In the control system the backstepping observer was applied . The induction machine parameters are presented in Table .…”

“…Stability analysis shows that simplified voltage control of IM was stable in full machine working points change. However, the stability range was dependent on the output filter capacitance C M and the dc‐link inductance L . In it is shown that if the capacitance is increased then the simplified control system is “less” stable.…”

“…However, the stability range was dependent on the output filter capacitance C M and the dc‐link inductance L . In it is shown that if the capacitance is increased then the simplified control system is “less” stable. Therefore, it is reasonable to take into account the output filter model and the inductor model in the voltage control system structure.…”

“…It guarantees a higher stability range and full IM nonlinear model linearization. For this purpose the standard multi‐scalar variables are modified to an extended form as in . An analysis of the extended control system based on multi‐scalar variables will be presented in the following sections.…”

Design and Experiments of a Piezoelectric Motor Using Three Rotating Mode Actuators

“…Structures using the inertial actuation mode can be designed as simple mechanical assemblies and driven with a single electrical source. This contributes to the notion that piezoelectric motors often have simpler and less complicated control systems than comparable electro-magnetic motors which do not require complex control strategies or a controller-observer approach [24,25,26,27].…”