Abstract: The
dynamic property of piezoelectric micro displacement actuator (PMDA)
is analyzed, especially the mechanical characteristic, lag phase
property and hysteresis phenomenon. The influence factors of
static and dynamic mechanical characteristics and the lag phase
property are analyzed systematically. Three main influence
factors of lag phase property are discovered. With comparison to
mechanical Coulomb friction, a generalized model of nonlinear
hysteresis of PMDA is advanced, based on the essential analysis
of nonlinear phenomenon. Finally the application of PMDA in
error compensation control system of boring is introduced. A
good compensation result is achieved.
Key words: Piezoelectric
actuator Dynamic property Lag phase Hysteresis Error
compensation
*
This
project is supported by National Natural Science Foundation
of China (No. 50075054). Received October 9, 2000; received in
revised form December 13, 2001; accepted January 3, 2002
|