Switching reluctance motor vibration compensation with PZT actuators: open loop results

This paper presents an active vibration compensation with piezoelectric actuators for switched reluctance motors. In order to verify results given by finite element analysis, an experimental structure is presented. This structure is called "basic" because it has no moving part, and then allows easier experimental work. The structural behaviour of this structure is presented, and we show how the piezoelectric actuators are used. The location and design of these actuators are discussed. The experimental bench uses two voltage supplies. The first gives the current excitation, and create the normal magnetic forces leading to the stator strain. The second one is the voltage supply for the piezoelectric elements. Experimental results obtained without and with synchronisation of the two excitations show the efficiency of the piezoelectric actuators. Test results are compared with finite elements computation