Results 61 to 70 of about 28,776 (207)

Multi-Physical Design and Resonant Controller Based Trajectory Tracking of the Electromagnetically Driven Fast Tool Servo

open access: yesActuators, 2020
In this paper, a voice coil motor (VCM) actuated fast tool servo (FTS) system is developed for diamond turning. To guide motions of the VCM actuator, a crossed double parallelogram flexure mechanism is selected featuring totally symmetric structure with ...
Imran Hussain   +4 more
doaj   +1 more source

The use of machine vision for assessment of fodder quality [PDF]

open access: yes, 2007
At present fodder is assessed subjectively. The evaluation depends greatly on a personal opinion and there can be large variations in assessments. The project has investigated the use of machine vision in several ways, to provide measures of fodder ...
Billingsley, John, Dunn, Mark T.
core   +5 more sources

The Dynamic Torque Calibration Unit: An instrument for the characterization of bearings used in gimbal applications [PDF]

open access: yes
The Dynamic Torque Calibration Unit (DTCU), an instrument for the characterization of duplex ball bearing pairs used in gimbal applications, was designed and built. The design and operation of the unit are described.
Jandura, Louise
core   +1 more source

A quasioptical steering system for the CCAT/XSPEC submillimeter multi-object spectrometer [PDF]

open access: yes, 2014
A two arm, opto-mechanical positioner mechanism is presented in this proceedings as a candidate steering system for the millimeter-wave XSPEC spectrograph. The design is well matched to the expected target density on the sky, and meeting all requirements
Bradford, C. M.   +3 more
core   +1 more source

Development of system for study on human recognition influenced by changing button press sensation

open access: yesMechanical Engineering Journal
Recently, touch screens have been used to operate smartphones and personal computers. When touch panels are used to operate devices, somatosensory feedback cannot be enjoyed.
Yasuhiro ONO   +3 more
doaj   +1 more source

Investigation of Force-Controlled Polishing of Complex Curved PMMA Parts on a Machining Center

open access: yesMachines
During the polishing process of complex curved PMMA parts, the polishing force is an important factor affecting the surface quality and optical performance. In this paper, a force-controlled polishing device integrated into a machining center to maintain
Xiangran Meng   +5 more
doaj   +1 more source

Fuzzy Logic Control of Voice Coil Motor Hard Disk Drives

open access: yesIFAC Proceedings Volumes, 1996
Abstract Fuzzy logic controllers exhibit many advantages over traditional controllers in applications involving systems with uncertain or highly complex dynamics. These controllers do not require a detailed mathematical model of the system, only an intuitive grasp of the system dynamics.
D.E. Boling   +3 more
openaire   +1 more source

Open-Loop Control of Voice Coil Motor With Magnetic Restoring Force Using High-Low Frequency Composite Signals

open access: yesIEEE Access, 2019
This study proposed an approach to control voice coil motors (VCMs) installed in smartphone modules as autofocus actuators. The VCM developed in this study comprises guide rods.
Yu-Hao Chang   +4 more
doaj   +1 more source

A conceptual design study for the secondary mirror drive of the shuttle infrared telescope facility (SIRTF) [PDF]

open access: yes
Various conceptual designs for the secondary mirror actuator system to be used in the Shuttle Infrared Telescope Facility (SIRTF) were evaluated. In addition, a set of design concepts was developed to assist in the solution of problems crucial for ...
Cox, D. W., Sager, R. E.
core   +1 more source

Composite Motion Design Procedure for Vibration Assisted Small-Hole EDM Using One Voice Coil Motor

open access: yesShock and Vibration, 2016
To address the problem of debris accumulation in small-hole electrical discharge machine (EDM) and simplify the design of the spindle head, the paper proposes a novel composite motion design procedure integrated high frequency vibration and large stroke ...
Jing Cui, Zhongyi Chu
doaj   +1 more source

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