Voice coil motor (VCM) is a special direct drive linear motor, which can convert electric
energy directly into mechanical energy without the use of transmission mechanism. VCM …

An embodiment of the present invention comprises a disk drive including a disk having a
plurality of servo tracks, a head coupled to an actuator arm, and a voice coil motor (VCM) for …

In this paper, we show that by using two adaptive neural networks (NNs), each of which is
tailored for a specific task, the tracking performance of the hard-disk-drive (HDD) actuator …

From the ox carts and pottery wheels the spacecrafts and disk drives, efficiency and quality
has always been dependent on the engineer's ability to anticipate and control the effects of …

In this brief, an adaptive neural network (NN) friction compensator is presented for servo
control of hard disk drives (HDDs). The existence of the hysteresis friction nonlinearity from …

During the academic year of 2015, a series of seminars were presented on the Mathematics
Department of Aristotle University of Thessaloniki, titled “An introduction to Matlab with …

Prandtl-Ishlinskii stop-type hysteresis operators allow for modeling elasto-plasticity in the
relative stress-strain coordinates including the saturation level of the residual constant …

The pivot friction of voice-coil-motor (VCM) actuator is measured for a 1.8-in small disk drive
with disk rotating and slider flying. The measurement is carried out under the conditions that …

Mechanical systems subject to friction hysteresis exhibit amplitude dependent frequency
responses. This paper derives the describing function (DF) of the Dahl friction model subject …

Pivot bearing friction and flex cable nonlinearity are the two major torque nonlinearities
which lead to performance degradation in hard disk drive (HDD) tracking tasks. Based on a …