Vibrational stability improvement of a mirror system using active mass damping. [PDF]
J Synchrotron RadiatActive damping with internal absolute velocity feedback was implemented to damp the angular vibration of a mirror holder for free‐electron laser beam transportation.Addressing the demand for high stability of beamline instruments at the SHINE facility, a high stability mirror regulating mechanism has been developed for mirror adjustments.
He S +7 more
europepmc +2 more sources
Measurement of Auto-Focus Driving Distance for Mobile Phone Camera Lens Using a Confocal Displacement Sensor [PDF]
한국정밀공학회지, 2018 In mobile phone cameras, usually a voice coil motor (VCM) is used as a micro-positioning device for the image autofocus (AF) because of its low cost, simplicity, and reliability.
Suk Woo Son, Hagyong Kihm
doaj +1 more source
A Rotary-Linear SPM Voice Coil Motor With PM Flux Bridges for Output Performance Improvement
IEEE Access, 2021 This paper proposes a rotary-linear surface-mounted permanent magnet (PM) voice coil motor (RL-SVCM) with PM flux bridges in place of the iron flux bridges in a traditional RL-SVCM for enhancing average torque and force ripple but slight damage of torque
Fuzhen Xing +3 more
doaj +1 more source
Actuators, 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
Effects of Geometric Sound on Brainwave Activity Patterns, Autonomic Nervous System Markers, Emotional Response, and Faraday Wave Pattern Morphology. [PDF]
Evid Based Complement Alternat MedThis study introduces Geometric Sound as a subfield of spatial sound featuring audio stimuli which are sonic holograms of mathematically defined 3D shapes. The effects of Geometric Sound on human physiology were investigated through EEG, heart rate, blood pressure, and a combination of questionnaires monitoring 50 healthy participants in two separate ...
Geffen R, Braun C.
europepmc +2 more sources
Active vibration control for a Free Piston Stirling Engine generator using a voice coil actuator [PDF]
, 2015 This work presents the study of active vibration control for a FPSE/ LA engine to ensure a reliable engine operation within a broader range of operation frequencies [50 ± 3 Hz] complying with new regulations.
Torres Perez, Angel; id_orcid +6 more
core +1 more source
IET Control Theory &Applications, Volume 15, Issue 15, Page 1931-1941, October 2021., 2021 Abstract Scanning imaging can be used to obtain wide field‐of‐view, high‐resolution remote‐sensing images with a telescope lens. However, the motion between the image and the sensor causes blurring during scanning, which reduces the image quality.
Yang Gao +3 more
wiley +1 more source
Design of Coaxial Integrated Macro–Micro Composite Actuator With Long-Stroke and High-Precision
IEEE Access, 2022 Macro–micro composite-driving structures are widely used in many applications, and research has been done to improve the associated driving stroke and positioning accuracy. This article proposes a novel macro–micro composite actuator (MMCA)
Caofeng Yu +5 more
doaj +1 more source
Design of a Rotary-Linear Motor With Unipolar SPM and Voice Coil Structure
IEEE Access, 2020 In this article, a rotary-linear motor that achieves rotary and linear motions with a simple one-air-gap structure, low rotary ripple, and smooth linear force is proposed. The proposed motor combines a five-phase unipolar surface-mounted permanent-magnet
Fuzhen Xing, Byung-Il Kwon
doaj +1 more source
Design and Experimental Validation of Voice Coil Motor for High Precision Applications [PDF]
, 2018 Flexural structures are extensively beneficial when differentiated with conventional inflexible body structures where point accuracy positioning is strongly required extending in the range of microns.
Razban, Ali +4 more
core +1 more source