[PDF] Top 20 A wavelet network control method for disk drives

... the wavelet transform emerges as a new powerful tool for signal processing and function ...with a fixed time window, the wavelet trans- form gives detailed local information of a ... See full document

... be a micro-actuator in the high data storage density disk drive development, and its response perform- ance is qualified to deal with fast and precise ...motion for the flying pickup head, where ... See full document

... bias, disk runout and deformation, ...present method can eliminate the repetitive ...the control input. Repetitive errors of PD control and sliding mode based learning control are ... See full document

... optics: a new tool for data storage’, ...recording method using a near-field optics and the GMR head’, Optical Data Storage, ...actuators for flying height control in ruggedised ... See full document

... optical disk drives represent a promising technique for optical data recording to achieve an even larger storage density and capacity than DVD-ROM and Blu-ray disk ...optical ... See full document

... of control into repetitive control. A multiplicative uncertainty design method is employed in feedback control, which fulfills disturbance and uncertainty rejection requirements and ... See full document

... presents a discrete frequency-shaped sliding mode control law for flying height control of near-field optical disk ...the disk vibration frequency using in- verse notch filters ... See full document

... neural network-based control technique has represented an alternative method to solve control problems ...used for approximation of control system dynamics or ...neural ... See full document

... proposes a recurrent neural fuzzy network (RNFN) for the high-precision motion control of permanent magnet linear synchronous motor (PMLSM) ...RNFN Control system consists of two ... See full document

... OF A SECOND-ORDER SYSTEM TO MEET THE DYNAMIC PROPERTIES OF THE FOCUSING ...OPTICAL DISK DRIVES ACTUATOR WITH CURVE ...DESIGN METHOD OF THE FREQUENCY RESPONSE AND BODE DIAGRAM TO DESIGN ... See full document

... multigrid method to form a numerical scheme that suits slider air-bearing simulation of hard disk ...error, a by-product of the multigrid method, is used in grid adaptation ...exceeds ... See full document

... Abstract: A wavelet neural network (WNN) control system is proposed to control the moving table of a linear ultrasonic motor (LUSM) drive system to track periodic reference ... See full document

... Although useful information of operating single-phase induction motors under variable-frequency voltage source is provided, the results are based on the condition th[r] ... See full document

... with a narrow displacement range, while the coarse actuator moves across the entire disk radius with lower ...forming a multi-input single-output servo system as shown in ...the control inputs ... See full document

... density. A block diagram of the FPGA internal circuitry is shown in ...necessary for the autotuning ...The control law (24) is executed by the current controller for each ...phase. A ... See full document

... reason for the gap between the theory developed in the lattices of coupled chaotic systems and that of CMLs lies mostly on the fact that it is more natural to have a nonlinear coupling between oscillators ... See full document

... 2001) a planar anal- ysis and numerical simulations lead to the conclusion that with adequate balancing net mass provided by a pair of balls and near-zero dampings, the two-ball balancer holds the ... See full document

... 兲 for ␣ sufficiently large, where 关n/2兴=the largest positive integer that is less than or equal to ...that for such N that ␭ 1 共 ␣ , 1兲⬍−2, whenever ␣ ⬎1/sin 2 共 ␲ / ...not a multiple of 4, then the ... See full document

... of a regular texture. In this method, a texture primitive is assumed to be a parallelogram and the texture primitives are arranged along two periodicity angles of the ...information. ... See full document

... of a pickup head in near-field optical disk drives, the influence of disk grooves on the airflow of an air bearing deserves investigation, since at a very low flying height, groove ... See full document