An important aim of the presented book is the explanation of the
application of piezoelectric materials such as piezoceramics within the
wide field of electromechanical actuators and sensor technology. The
reader should be presented the physical and mechanical properties of
piezoceramics in a distinct way. In a next step the reader is gradually
introduced into the mechanical description of the static behavior of
piezoelectric multilayer beam bending actuators being indispensable for
industrial applications. Thereby, the reader gains insights, that are of
great importance for the physical understanding and the design of
piezoelectric bending actuators.
In a next step the transition to the description of the dynamic behavior
of piezoelectric multilayered bending actuators is carried out on the
basis of Lagrange's formalism and Hamilton's principle providing the
description within the field of structural dynamics for any kind of
piezoelectric actuator. Subsequently, the attained insights are used for
the systematic development of the electromechanical circuit
representation within the context of the network theory for any kind of
piezoelectric bending actuators. Particularly, this kind of
representation is an indispensable tool for electrical engineers and
engineers working in the field of mechatronics.
The applications of piezoelectric multilayer beam bending actuators can
be extended by means of special displacement sensors. The sensor
integration enables the compensation of effects such as hysteresis,
creeping and drift being typical for piezoelectric actuators. Thus, beam
bending actuators can be applied for high-accuracy positioning. Within
the scope of the presented work two different sensor-actuator systems
are shown being based on an integrated capacitive and inductive
displacement sensor respectively.
Analytical simulations of the static and dynamic behavior are compared
to real measurement results of a specially developed piezoelectric
multilayer beam bender. Here, the suitability of the developed
theoretical aspects is shown in an outstanding way. Furthermore, the
inductive and the capacitive displacement sensor and the corresponding
sensor electronics are discussed in detail. This kind of representation
proves usefully for engineers working in the field of electronics and
sensor development.
The presented book reveals the multidisciplinarity of the topic. The
successful approaches on the part of actuators exemplify the solution of
similar problems in industries and research and provide the transition
to integrated electromechanical systems.
