Improvement On Dynamic Characteristics Of Linear Oscillatory Actuator With Exciting Current Control

Improvement on characteristics of linear oscillatory actuator for artificial hearts

“…solution of the proposition [5]. A s a result that we measured static thrust characteristics with each methods, starting thrusts w e r e improved.…”

“…In the first place, F x ( x ) is expanded to Fourier series which is shown in equation (4) so as to transform static thrust K ( X ) in Figure 2 as equation (2). where n is positive integer, k n and kan are harmonic t h r u s t constants, En and En are amplitude of harmonics in detent force, w is 27r/ T , and r is stroke. Transforming equation (4) makes current I(x) and that expressed as equation (5) When F x ( x ) is replaced by required thrust on equation (5), t h e current to satisfy t h e required thrust is obtained [5]. The authors developed a simple structured, permanent magnets single-winding LOA for total implantable artificial hearts actuator.…”