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Active vibration control is the active application of force in an equal and opposite fashion to the forces imposed by external vibration. With this application
Active_vibration_control
Method for reducing unwanted sound
some cases, noise can be controlled by employing active vibration control. This approach is appropriate when the vibration of a structure produces unwanted
Active_noise_control
Prevention of transmission of vibration
"active vibration isolation" or "electronic force cancellation" employing electric power, sensors, actuators, and control systems. Passive vibration isolation
Vibration_isolation
engineering, vibration control is a set of technical means aimed to mitigate seismic impacts in building and non-building structures. All seismic vibration control
Seismic_vibration_control
Indian Multi-role helicopter
contract to develop an active vibration control system (AVCS), which monitors onboard conditions and cancels out fuselage vibrations. The cockpit section
HAL_Dhruv
Electric charge generated in certain solids due to mechanical stress
Bosch GmbH, instead of the more common solenoid valve devices. Active vibration control using amplified actuators. X-ray shutters. XY stages for micro
Piezoelectricity
Mechanical oscillations about an equilibrium point
In mechanics, vibration (from Latin vibrāre 'to shake') is an oscillation of matter about an equilibrium point. Vibration may be deterministic if the
Vibration
Single-engine light helicopter
EC130 model, changes to improve passenger conditions such as an active vibration control system and better air conditioning systems were adopted, while
Eurocopter_EC130
Transport helicopter family by Sikorsky
are titanium.[citation needed] The S-92 features an active vibration control system, using vibration sensors and structurally mounted force generators to
Sikorsky_S-92
Headphones with active noise control
waveform in real time with analog technology. In contrast, other active noise and vibration control products use soft real-time digital processing. According
Noise-cancelling_headphones
American medium-size commercial utility helicopter
Canada PW210S engines driving composite rotors and incorporates active vibration control. Performance is substantially improved with the added power, but
Sikorsky_S-76
Study and modification of the noise and vibration characteristics of vehicles
Noise, vibration, and harshness (NVH), also known as noise and vibration (N&V), is the study and modification of the noise and vibration characteristics
Noise, vibration, and harshness
Noise,_vibration,_and_harshness
Bearing which supports loads using magnetic levitation
of a Magnetic Rotor Bearing for Active Vibration Control, Paper C239/76, First International Conference on Vibrations in Rotating Machinery, (1976) Estelle
Magnetic_bearing
Technique for designing controllers
Active disturbance rejection control (or ADRC, also known as automatic disturbance rejection control) is a model-free control technique used for designing
Active disturbance rejection control
Active_disturbance_rejection_control
Occupational hazard from overusing handheld machinery
arm vibrations (HAVs) are a specific type of occupational hazard which can lead to hand–arm vibration syndrome (HAVS). HAVS, also known as vibration white
Hand_arm_vibrations
Multi-role helicopter family by AgustaWestland
aircraft's control systems allow the AW101 to maintain a stable hover in 74 km/h (40 kn) crosswinds. An active vibration control system, known as the active control
AgustaWestland_AW101
Japanese high-speed train type
modifications to its 300 series fleet involving the addition of semi-active vibration control units to seven cars out of the total of sixteen in each set (end
300_Series_Shinkansen
US manufacturing company
Vibration & Motion Control, Magneto-Rheological (MR) fluids. Active Vibration Control (AVC) Systems: LORD AVC systems are used to minimize vibration and
Lord_Corporation
Interactions among inertial, elastic, and aerodynamic forces
verified through the use of calculations, ground vibration tests and flight flutter trials. Flutter of control surfaces is usually eliminated by the careful
Aeroelasticity
Smart material systems
Feedback Pumps Valves Robotics Active origami-inspired structure Prosthetics Power Generation Active Vibration Control of Structures Optical Positioners
Dielectric_elastomers
Interaction involving touch
forces, vibrations, or motions to the user. These technologies can be used to feel virtual objects and events in a computer simulation, to control virtual
Haptic_technology
suppress severe vibrations during machining process. The damping method includes both active damping method and passive damping tool. The active damping tools
Damped_machining_tools
Structures designed to protect buildings from earthquakes
acceptable damage, to equipping it with base isolation or using structural vibration control technologies to minimize any forces and deformations. While the former
Earthquake-resistant structures
Earthquake-resistant_structures
Abraham; Constantinescu, Aurelian (2017). Adaptive and Robust Active Vibration Control. Springer-Verlag. ISBN 978-3-319-41449-2. 1968: gold medal at the
Ioan_Doré_Landau
Means of protecting a structure against earthquake
tools of earthquake engineering pertaining to the passive structural vibration control technologies. The isolation can be obtained by the use of various
Seismic_base_isolation
South Korean car parts company
automotive vibration damping parts. In 2005, It commercialized the world's first active mount technology that actively reduces vibration and noise using
DN_Automotive
Film for Active Control of Vibrations: U.S. Patent Number 4,565,940. January 21, 1986. Method and Apparatus for Active Control of Vibrations: U.S. Patent
James_E._Hubbard_Jr.
Device designed to reduce vibrations in structures
used in production cars, typically on the crankshaft pulley to control torsional vibration and, more rarely, the bending modes of the crankshaft. They are
Tuned_mass_damper
Relative movement between a machining tool and the workpiece
In machining, vibrations, also called chatter, are the relative movements between the workpiece and the cutting tool. These vibrations can range from quiet
Machining_vibrations
How well a vehicle copes with uneven surfaces
"Reducing Whole-Body Vibration by Geometric Repair of Pavements". Journal of Low Frequency Noise, Vibration and Active Control. 23 (2): 103–114. Bibcode:2004JLFNV
Ride_quality
Device that converts energy from one form to another
signal) Tactile transducers – convert electrical signal into vibration (electrical signal → vibration) Thermophones – convert electrical signals into temperature
Transducer
Italian-Canadian university professor and researcher
nonlinear vibrations and biomechanics of the human aorta and advanced aortic grafts, composite structures, MEMS and active vibration control. Professor
Marco_Amabili
Study of earthquake-resistant structures
Seismic vibration control is a set of technical means aimed to mitigate seismic impacts in building and non-building structures. All seismic vibration control
Earthquake_engineering
Element used on cylindrical structures
vortexes forming a Kármán vortex street, thus reducing the resulting vibrations. Introduced by Christopher Scruton and D. E. J. Walshe in 1957, helical
Helical_strake
American aircraft engineer
percent. Sikorsky developed an active vibration control system that creates counter vibrations to cancel the vibration signatures normally present which
Nicholas_Lappos
Branch of physics involving mechanical waves
mechanical waves in gases, liquids, and solids including topics such as vibration, sound, ultrasound and infrasound. A scientist who works in the field
Acoustics
Building or transport method that can change its shape at operator's will
active control is utilized in some civil structures for deployment against seismic loading, wind loading and environmental vibration. Also, active control
Active_structure
Methods to reduce sound pressure
sound baffles for absorption, or using active anti-noise sound generators. Acoustic quieting and noise control can be used to limit unwanted noise. Soundproofing
Soundproofing
Strategies to reduce noise pollution or its impact
such building hardware. In other cases, shock mounting of systems to control vibration may be in order. In the case of plumbing systems, there are specific
Noise_control
Automotive research center
facilities for vehicle homologation and also testing laboratories for noise, vibration and harshness (NVH) and passive safety. It also includes a powertrain
International Centre for Automotive Technology
International_Centre_for_Automotive_Technology
Overview of and topical guide to acoustics
vibration isolation to reduce vibration in operating theatres; studying how vibration can damage health (vibration white finger); vibration control to
Outline_of_acoustics
Collections of ice crystals in open water
There are several ways to control frazil ice build up. They include suppression, mechanical control, thermal control, vibration, materials selection and
Frazil_ice
Fundamental building block of control systems
A control loop is the fundamental building block of control systems in general and industrial control systems in particular. It consists of the process
Control_loop
Sex toy
activation, and customizable vibration patterns. However, these vibrators are not silent, producing an audible humming sound when active.[citation needed] Vibrating
Clitoral_vibrator
Mechanical engineering technique for suppression of vibration
Constrained-layer damping is a mechanical engineering technique to suppress vibrations. Typically a viscoelastic or other damping material, is sandwiched between
Constrained-layer_damping
editorial board of the following scientific journals: Journal of Vibration and Control (1994-2014), Journal of Nonlinear Science (1995-2017), Journal of
Gábor_Stépán
Engine fuel economy system
and Active Control Engine Mount (ACM) systems reduce vibration. The VCM hydraulic circuit control is defaulted open, meaning that the engine has to build
Variable_Cylinder_Management
fluid damper, is a type of quick-response active non-linear damper used in high-sensitivity vibration control. Zhu, Yu; Jia, Songtao; Chen, Yaying; Li
ERF_damper
Device that measures proper acceleration
video-game controllers to detect movement and orientation of these devices. Vibration in industrial machinery is monitored by accelerometers. Seismometers are
Accelerometer
Theory about pain and the nervous system
small-diameter (pain-transmitting) and large-diameter (touch-, pressure-, and vibration- transmitting) afferent nerve fibers carry information from the site of
Gate_control_theory
American aerospace engineer
computational aeroelasticity, reducing helicopter vibration and noise through active flap control, aerothermoelasticity in hypersonic vehicles, multidisciplinary
Peretz_P._Friedmann
Alternate scientific theory of scent perception
The vibration theory of smell proposes that a molecule's smell character is due to its vibrational frequency in the infrared range. This controversial
Vibration_theory_of_olfaction
Generic name for a relatively persistent vibration of the ground
disciplines, seismic noise is a generic name for a relatively persistent vibration of the ground, due to a multitude of causes, that is often a non-interpretable
Seismic_noise
the sound inside and outside of the vehicle. Active sound design (ASD) often uses active noise control and acoustic enhancement techniques to achieve
Active_sound_design
Reciprocating internal combustion engine
design minimizes vibration More rigid crankshaft design Second-order balance system Redesigned cylinder block is more rigid with less vibration Aluminum engine
Honda_F_engine
Airborne system of surveillance radar plus command and control functions
prominent circular housing at the front, but proved unreliable due to vibration, as well as costly to operate and slow, and only two were built. The British
Airborne early warning and control
Airborne_early_warning_and_control
1989 aviation accident in England
pilots retarded the right thrust lever and the symptoms of smoke and vibration cleared, leading them to believe the problem had been identified, and
Kegworth_air_disaster
Vehicle noise made by trains
irregularities on the wheel and rail surfaces are a source of noise and vibration. Rail joints and squats on the rail cause a familiar "clickety-clack"
Train_noise
Device that emites acoustic radiation
a pump) produces sound waves (lattice vibrations, phonons) that travel through an active medium. In this active medium, a stimulated emission of phonons
Sound amplification by stimulated emission of radiation
Sound_amplification_by_stimulated_emission_of_radiation
American singer, producer, record executive
In August 2021, Gramps Morgan released his third solo album, Positive Vibration, produced by Canadian Juno Award-winning singer-songwriter Johnny Reid
Gramps_Morgan
Turkish American academic (born 1950)
University of California at Berkeley and graduated in 1979. His thesis on Vibration and Stability of Bandsaw Blades was supervised by C. Daniel Mote Jr. Ulsoy
Galip_Ulsoy
Type of packaging
metal-chelating active packaging technology is also antioxidant active packaging that will extend the shelf-life of consumer products by controlling the oxidation
Active_packaging
Technology and service company
interpreting vibration signals to help customers identify and correct machinery malfunctions. By 2002, Bently Nevada Corporation had more than 10,000 active products
Bently_Nevada
Mobile phone
"E6 Vibration alert". Nokia Forums. Archived from the original on 31 December 2011. Retrieved 14 January 2012. "Nokia E6 problem in vibration". Techarena
Nokia_E6
Storage room for wine
plastic containers. In an active wine cellar, important factors such as temperature and humidity are maintained by a climate control system. In contrast, passive
Wine_cellar
Controlling pests using other organisms
Biological control or biocontrol is a method of controlling pests, whether pest animals such as insects and mites, weeds, or pathogens affecting animals
Biological_pest_control
Japanese manga series
released the series in August 2012. A second anime season titled Freezing Vibration (フリージング ヴァイブレーション, Furījingu Vaiburēshon) premiered on October 4, 2013
Freezing_(manga)
Topics referred to by the same term
turntable interface allowing DJs to control digital music Divinyl sulfide, an organic compound Distributed vibration sensing Dynamic vapor sorption, a chemistry
DVS
Damping unwanted vibrations of machinery
Acoustic quieting is the process of making machinery quieter by damping vibrations to prevent them from reaching an observer. Machinery vibrates, causing
Acoustic_quieting
Reciprocating internal combustion engine
maximum torque rating of 430 lb⋅ft (583 N⋅m) while also improving noise, vibration, and harshness (NVH). Parts are cast at Bedford Casting Operations in
GM_L3B_engine
Suspension system for a vehicle
With the help of a control system, various semi-active/active suspensions realize an improved design compromise among different vibration modes of the vehicle;
Car_suspension
Measurement of infrared radiation's interaction with matter
Infrared spectroscopy (IR spectroscopy or vibrational spectroscopy) is the measurement of the interaction of infrared radiation with matter by absorption
Infrared_spectroscopy
Damper filled with magnetorheological fluid
attenuating an undesired shock or vibration. The relative efficacy of magnetorheological dampers to active and passive control strategies is usually comparable
Magnetorheological_damper
Mechanical device in an aircraft cockpit to warn the pilot of an imminent stall
rear end of the aircraft, and that in turn causes vibrations that are transmitted through control cables and can be felt by the pilot on the yoke as
Stick_shaker
Discrete device in an electronic system
having four active terminals. Thyristors Silicon-controlled rectifier (SCR) – passes current only after triggered by a sufficient control voltage on its
Electronic_component
Italian house music group
Positive Vibration", both of which fared well on the charts. In 1997, the album was re-issued with three additional singles: "I Got the Vibration", "Native
Black_Box_(band)
Line of gamepads developed by Sony
PlayStation family of video game consoles. It is named for vibration-feedback and analog controls. Introduced in November 1997, it was initially marketed
DualShock
Techniques to clear the respiratory airways
The out breath is unforced and may include some percussive clapping, or vibration. Phase three Using huffing coughing, mucus is moved from the smaller airways
Airway_clearance_therapy
American multi-instrumentalist (born 1943)
(Celestial Vibration, 1981) Unicorns in Paradise (Laraaji, 1981) Rhythm N' Bliss (Third Ear, 1982) Om Namah Shivaya (Celestial Vibration, 1984) Sun Zither
Laraaji
Influence on an oscillating physical system which reduces or prevents its oscillation
control engineering: a textbook for chemical, mechanical and electrical engineers. CRC Press. p. 96. ISBN 978-2-88124-628-9. "Dynamics and Vibrations:
Damping
Sense of self-movement, force, and body position
PIEZO2 gene exhibit specific deficits in joint proprioception, as well as vibration and touch discrimination, suggesting that the PIEZO2 channel is essential
Proprioception
Brand of wand vibrator
The massager provides two vibration rates—nominally 5,000 and 6,000 rpm, equivalent to 83 Hz and 100 Hz—that are controlled by a switch on its body. Research
Hitachi_Magic_Wand
Applies an electric current to heat or cool materials
reduced instances of failure due to fatigue and fracture from mechanical vibration and stress increases the lifespan of the system and lowers the maintenance
Thermoelectric_heat_pump
Acoustic sensing method
power systems. If transformers or generators are mounted without proper vibration insulation from the hull or become flooded, the 60 Hz sound from the windings
Sonar
Nigerian singer (born 1986)
Tabula Rasa as "masterpieces". Brymo teamed up with three members of Skata Vibration to form A.A.A, an alternative rock band whose eponymous debut Extended
Brymo
Canadian turboprop airliner
(including all Series 400s) include the Active Noise and Vibration System designed to reduce cabin noise and vibration levels to nearly those of jet airliners
De_Havilland_Canada_Dash_8
Shock absorber for locomotives
an electrically-controlled damper and a semi-active on-and-off device that trades off traditional yaw dampers with an additional control valve implemented
Yaw_damper_(railroad)
vibrations, oscillations and vibration systems – Part 1: Basic concepts, survey Active DIN 1311-2 (Mechanical) vibrations, oscillations and vibration
List_of_DIN_standards
Skyscraper complex in Milan, Italy
dampens vibrations. The adoption of this technology is necessary to prevent the propagation of potential seismic waves and, especially, vibrations induced
Bosco_Verticale
Species of insect
honeydew, the larvae are active predators and feed on aphids and other small insects. It has been used in the biological control of insect pests on crops
Chrysoperla_carnea
Mechanism designed to warn a driver when the vehicle begins to move out of its lane
driver if the vehicle is leaving its lane with visual, audible, and/or vibration warnings Lane keeping assist (LKA/LKS): Systems which warn the driver
Lane_departure_warning_system
already in use or are being actively developed, such as mating disruption using vibrational noise for non-chemical pest control and detection of concealed
Biotremology
Video game controller that tracks motions
tracking and a one axis gyroscope while not including the haptic feedback (vibration) seen in other modern consoles citing interference concerns. Both features
Motion_controller
System that detects unauthorised entry
tools on openings, and/or applies pressure, creating low-frequency sound vibrations. Before the intruder breaks in, the infrasound detector automatically
Security_alarm
American rock band
an official member. Released in 1966, the Pet Sounds album and "Good Vibrations" single became widely regarded as among the greatest and most influential
The_Beach_Boys
Topics referred to by the same term
(machining), unwanted vibrations while cutting material Chattering teeth in response to cold Oscillations in sliding mode control Valve chatter, rapid
Chatter
Electronic oscillator circuit
temperature-controlled container, called a crystal oven, and can also be mounted on shock absorbers to prevent perturbation by external mechanical vibrations. A
Crystal_oscillator
Mechatronical technology reducing the ecological impact of machines
of vibration dampers on a mechanical structure Active vibration damping: e.g. use of piezoelectric bearings for active control of machine vibrations Rapid
Ecomechatronics
Instrument for measuring optical rotation
quartz half. Consider that the vibration of polarization is along OP. On passing through the glass half the vibrations remain along OP. But on passing
Polarimeter
Ratio of active power to apparent power
the shaft and sometimes result in damaging mechanical vibrations. The simplest way to control the harmonic current is to use a filter that passes current
Power_factor
ACTIVE VIBRATION-CONTROL
ACTIVE VIBRATION-CONTROL
Boy/Male
Gujarati, Hindu, Indian
Vibration of Lord Shiva
Girl/Female
Hindu, Indian, Sanskrit
Liberation
Girl/Female
Hindu, Indian
Resonance; Vibration
Girl/Female
Hindu, Indian, Traditional
Liberation
Girl/Female
Tamil
Liberation
Male
English
Pet form of English Ace, ACIE means "number one."
Surname or Lastname
English
English : habitational name from any of various places, for example in Shropshire and Cheshire, named Clive, from the dative case of Old English clif ‘slope’, ‘bank’, ‘cliff’ (see Cliff), originally used after a preposition. In some cases the name may be topographical, with the same origin and meaning.
Girl/Female
Indian, Sanskrit
Perfect Liberation
Male
English
English pet form of Celtic Arthur, possibly ARTIE means "bear-man."Â
Girl/Female
Hindu
Liberation
Boy/Male
Indian, Punjabi, Sanskrit, Sikh
Bliss; Liberation
Boy/Male
Tamil
Nirvan | நிரà¯à®µà®¾à®£Â
Liberation
Nirvan | நிரà¯à®µà®¾à®£Â
Boy/Male
Indian, Punjabi, Sikh
Liberation
Boy/Male
Bengali, Gujarati, Hindu, Indian, Kannada, Telugu
Liberation
Boy/Male
British, English, Indian, Russian
Work
Boy/Male
Hindu, Indian
Vibration
Male
English
English surname transferred to forename use, from the name of various places, derived from Old English clif, CLIVE means "bank, cliff, slope."
Boy/Male
French American
Born eighth.
Boy/Male
Tamil
Liberation
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sanskrit, Tamil, Telugu
Liberation
ACTIVE VIBRATION-CONTROL
ACTIVE VIBRATION-CONTROL
Girl/Female
Hindu
Dispeller of ignorance, One who gathers knowledge
Male
Finnish
Pet form of Finnish Sakari, SAKKE means "whom Jehovah remembered."
Boy/Male
Hindu, Indian, Kannada, Marathi, Tamil
God Murugan; God Karuppasamy
Boy/Male
Muslim
The Indus river
Boy/Male
Australian, Finnish
Man; Warrior; Plant; Earth
Boy/Male
Tamil
Boy/Male
Anglo Saxon
Defends.
Boy/Male
Hindu, Indian
True
Boy/Male
Australian, French, Latin
Shining
Surname or Lastname
English
English : habitational name from either of two places called Wilford, in Nottinghamshire and Suffolk, both probably named with an Old English wilig ‘willow tree’ + Old English ford ‘ford’.Dutch : see Williford.
ACTIVE VIBRATION-CONTROL
ACTIVE VIBRATION-CONTROL
ACTIVE VIBRATION-CONTROL
ACTIVE VIBRATION-CONTROL
ACTIVE VIBRATION-CONTROL
a.
In action; actually proceeding; working; in force; -- opposed to quiescent, dormant, or extinct; as, active laws; active hostilities; an active volcano.
n.
The act of vibrating, or the state of being vibrated, or in vibratory motion; quick motion to and fro; oscillation, as of a pendulum or musical string.
a.
Given to action rather than contemplation; practical; operative; -- opposed to speculative or theoretical; as, an active rather than a speculative statesman.
adv.
In an active signification; as, a word used actively.
n.
The quality or state of being vibratile; disposition to vibration or oscillation.
a.
Adapted to, or used in, vibratory motion; having the power of vibrating; vibratory; as, the vibratile organs of insects.
a.
Applied to a form of the verb; -- opposed to passive. See Active voice, under Voice.
a.
Requiring or implying action or exertion; -- opposed to sedentary or to tranquil; as, active employment or service; active scenes.
a.
Having the power or quality of acting; causing change; communicating action or motion; acting; -- opposed to passive, that receives; as, certain active principles; the powers of the mind.
a.
Given to action; constantly engaged in action; energetic; diligent; busy; -- opposed to dull, sluggish, indolent, or inert; as, an active man of business; active mind; active zeal.
a.
Implying or producing rapid action; as, an active disease; an active remedy.
a.
Brisk; lively; as, an active demand for corn.
a.
Acting in concurrence; united in action.
n.
An act of irreverence or desecration; profanation or contemptuous treatment of sacred things; as, the violation of a church.
a. Vibrating
; vibratory.
a.
Doing; active.
n.
Infringement; transgression; nonobservance; as, the violation of law or positive command, of covenants, promises, etc.
a.
Not active; inert; esp., not exhibiting any action or activity on polarized light; optically neutral; -- said of isomeric forms of certain substances, in distinction from other forms which are optically active; as, racemic acid is an inactive tartaric acid.
adv.
In an active manner; nimbly; briskly; energetically; also, by one's own action; voluntarily, not passively.
n.
The act of vitiating, or the state of being vitiated; depravation; corruption; invalidation; as, the vitiation of the blood; the vitiation of a contract.