... conditions. piezoelectric actuators hysteresis temperature diesel injectors Piezoelectric actuators are very promising devices that may be adopted in automotive environment to meet the more and more severe requirements about emissions and consumption. In standard injectors, the hydraulic...

...Chris A. Satkoski; Gregory M. Shaver; Ranjit More; Peter Meckl; Douglas Memering; Shankar Venkataraman; Jalal Syed; Jesus Carmona-Valdes As engine designers look for ways to improve efficiency and reduce emissions, piezoelectric actuated fuel injectors for common rail diesel engines have shown...

...Qingsong Xu; Yangmin Li This paper presents a new control scheme for the hysteresis compensation and precise positioning of a piezoelectrically actuated micromanipulator. The scheme employs an inverse Dahl model-based feedforward in combination with a repetitive proportional-integral-derivative...

... with conventional positive position feedback. 02 07 2008 22 12 2008 27 04 2009 closed loop systems damping feedback flexible structures open loop systems piezoelectric actuators piezoelectricity vibration control vibrations active control vibration compensation positive...

... materials intelligent structures Kalman filters magnetostrictive devices nonlinear control systems open loop systems optimal control perturbation techniques PI control piezoelectric actuators piezoelectric materials piezoelectric transducers shape memory effects stochastic processes...

... ) . 16 10 2006 17 05 2008 25 09 2008 beams (structures) compensation fault tolerance feedback filtration piezoceramics piezoelectric actuators structural engineering supports vibration control vibrations active vibration control fault tolerant control Beard–Jones...

.... Output oscillations need to be small in scanning operations, particularly for lightly damped systems, such as the piezoelectric actuators and the flexible structures. Moreover, modeling errors are ubiquitous in practical applications. The proposed approach extends the recently developed optimal scan...

...-kinematic mechanism featuring single-axis flexure hinges. The stage is driven by piezoelectric actuators, and its displacement is detected by capacitance gauges. The control loop is closed at the end effector instead of at each joint, so as to avoid calibration difficulties and guarantee high positioning...

...Saeid Bashash; Nader Jalili A set of memory-based properties is employed in this paper for modeling multiple-path hysteresis response of piezoelectric actuators. These properties, namely, targeting turning points, curve alignment, and wiping-out effect, are applied in a linear mapping strategy...

...Smitha Mani; Sahjendra N. Singh; Surya Kiran Parimi; Woosoon Yim This brief paper treats the question of adaptive control of a projectile fin using a piezoelectric actuator. The hollow projectile fin is rigid, within which a flexible cantilever beam with a piezoelectric active layer is mounted...

... of this control scheme in expanding servo control bandwidth and suppressing airflow excited structural vibrations. 02 04 2004 01 11 2005 piezoelectric actuators control system synthesis disc drives hard discs vibration control Kalman filters state feedback servomechanisms suspensions...

.... An electromechanical model for piezoelectric actuators is presented. The model accounts for the hysteretic behavior inherent to piezoelectrics by implementing the Maxwell slip hysteresis model, where the nonlinear voltage-to-charge properties of the piezoceramic are represented as a series of voltage-limited...

...T.-J. Yeh; Shin-Wen Lu; Ting-Ying Wu In this paper, a model and the associated identification procedure are proposed to precisely portray the hysteresis behavior in piezoelectric actuators. The model consists of basic physical elements and utilizes a Maxwell-slip structure to describe hysteresis...

...Chih-Lyang Hwang, Professor,; Yung-Ming Chen We consider the modeling and control of a high-displacement piezoelectric actuator system (HDPAS). An HDPAS includes a multilayer LVPZT bender actuator (MLBA) and a low-pass filter. The MLBA is subject to hysteresis, bending modes, measurement noise...

... synthesis piezoelectric transducers piezoelectric actuators electric sensing devices flexible structures switching observers Over the last decade, there has been significant interest in the control community in the design and analysis of switched systems. A switched system consists of two...

... piezoelectric actuator input voltages and six geophone sensor output voltages were identified empirically. The 6 × 6 transfer function matrix is symmetric, and its off-diagonal terms indicate the coupling among different input/output channels. Various multi-input multi-output (MIMO) control techniques...

..., and Johnson-Kendall-Roberts models in the contact region. Finally, numerical results are provided to illustrate the coupling effects between the piezoelectric actuator and the cantilever beam and the interaction effects between the tip and samples on the dynamic responses. 13 06 2003 17 10 2004...

... 19 September 2003 05 08 2004 flexible manipulators Lyapunov methods piezoelectric actuators damping multidimensional systems convergence vibrations controllers The suppression of vibration is a problem of primary importance in many engineering fields, among which robotics...

... Applications ,” Prec. Eng. , 12 ( 3 ), pp. 131 – 136 . Jung , S. , and Kim , S. , 1994 , “ Improvement of Scanning Accuracy of PZT Piezoelectric Actuators by Feedforward Model-reference Control ,” Prec. Eng. , 16 ( 1 ), pp. 49 – 55 . Mayergoyz, I., 1991, Mathematical Models...

...Rong-Fong Fung,, Professor; Yung-Tien Liu,, Assistant Professor; Tai-Kun Huang,, Graduate Student; Toshiro Higuchi,, Professor The piezoelectric actuator (PA) has been used for precision positioning from micrometer down to nanometer scale. In this paper, a spring-mounted PA is designed to achieve...