Piezoelectric microactuator for dual stage control

Evans, Robert; Griesbach, J.S.; Messner, William C.

doi:10.1109/20.753819

Cited by 168 publications

(62 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Applying this scheme, a servo bandwidth of 3 kHz or more is possible, whereas a conventional single-stage actuator can only attain 500~700Hz: servo bandwidth [2]. Higher bandwidth can not only largely improve the magnetic head positioning accuracy for increasing HDD storage capacity, but also to a certain extent deal with disturbances.…”

Section: Introductionmentioning

confidence: 99%

Dual-Stage HDD Disturbance Cancellation based on an Efficient Adaptive Feedforward Compensation Algorithm

Huang

Peng

Wang

2009

Journal of Low Frequency Noise, Vibration and Active Control

View full text Add to dashboard Cite

This paper applies an efficient adaptive feedforward compensation (AFC) algorithm for periodic disturbance cancellation on a hard disk drive (HDD) servo system. Such an algorithm is shown to be equivalent to a linear time invariant (LTI) model. With the help of this equivalence, we can easily choose optimal phase advance parameters, precisely predict the upper bounds of the allowable adaptation gains and determine the appropriate coefficients of a feedthrough term. Additionally, in order to obtain higher servo bandwidth, a dual-stage actuated structure is put forward. This dual-stage actuator system consists of a Voice Coil Motor (VCM) as a primary actuator and a micro actuator as a secondary actuator. Such a configuration can further reject the disturbance and maximize the servo system performance. The simulation results in time domain and frequency domain show that this scheme is capable of achieving a satisfactory performance in dealing with disturbances.

show abstract

Section: Introductionmentioning

confidence: 99%

Dual-Stage HDD Disturbance Cancellation based on an Efficient Adaptive Feedforward Compensation Algorithm

Huang

Peng

Wang

2009

Journal of Low Frequency Noise, Vibration and Active Control

View full text Add to dashboard Cite

show abstract

“…Instead of using ''stacked'' PZT's, they used shear-mode PZT crystals (Koganezawa et al 1999). Evans and Griesbach (1999) presented a piezoelectric micro-actuator design that takes manufacturability and economical considerations into account. They modeled the dynamics of their design and presented two voltage drivers that can be used to drive the actuator.…”

Section: Dual Stage Actuator Headmentioning

confidence: 99%

Design of a dual stage actuator tape head with high-bandwidth track following capability

et al. 2009

View full text Add to dashboard Cite

As tape recording density increases, high-frequency track following capability of the tape head actuator becomes more important. This paper details the mechanical design and experimental analysis of a dual state actuator tape head. The dual stage actuator design combines a traditional voice coil motor for low frequency track following with a piezoelectric actuator for high-frequency track following. Non-parametric and parametric modeling techniques are used in the analysis of the dual stage actuator. The performance of the dual stage actuator head shows good correlation with the model and will enable improved track following capability for future high-performance tape drives.

show abstract

“…The GA approach [6] is used to compute the parameters weighting function namely: a 1i , a 2i , a 3i , b 1i , b 2i , b 3i and const i , and to obtain a optimal H ∞ controller. The concept is to generate a values population of chromosomes representing the parameters to optimize, and subjected to check whether it satisfies the performance index or not.…”

Section: Parameters Optimizationmentioning

confidence: 99%

Robust tracking of a two-fingered micromanipulation system working through the focus of an optical beam

Amari

Folio

Ferreira

2014

2014 American Control Conference

View full text Add to dashboard Cite

Abstract-This paper reports a control strategy of two AFM gripper for manipulation on analysis Beam, using dual micro/nano manipulators in order to grippe a micro spherical ball and tacking-maintain on the focus of laser beam. The main idea is to control and drive AFM gripper to expose micro samples in the laser beam by localization of the maximum intensity laser beam given by a four-quadrant photodiode. The focalization of analysis Beam used for microhandling is few micrometer that making the intensity measurement sensitive at the externals variations and positioning of the four-quadrant photodiode affecting the control of the gripper and position the sample far of the focalization of laser beam. To overcome this problem, the Particle Filter (PF) algorithm is used to estimate the position of laser beam.The dual manipulators is controlled by combine different performance dynamics (micro manipulator and nano manipulator) to track a laser beam with high precision.

show abstract

Piezoelectric microactuator for dual stage control

Cited by 168 publications

References 11 publications

Dual-Stage HDD Disturbance Cancellation based on an Efficient Adaptive Feedforward Compensation Algorithm

Dual-Stage HDD Disturbance Cancellation based on an Efficient Adaptive Feedforward Compensation Algorithm

Design of a dual stage actuator tape head with high-bandwidth track following capability

Robust tracking of a two-fingered micromanipulation system working through the focus of an optical beam

Contact Info

Product

Resources

About