Results 251 to 260 of about 294,420 (308)
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The Journal of the Acoustical Society of America, 1993
To reduce noise inside a motor car passenger compartment, two loudspeakers (371, 372) are driven by signals derived from a reference signal x(n) by adaptive filtering carried out by a programmed microprocessor and memory unit (36) which adapts the filtering in dependence on error signals el(n) from four microphones (421, 422, 423 and 424) distributed ...
Stephen J. Elliott +2 more
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To reduce noise inside a motor car passenger compartment, two loudspeakers (371, 372) are driven by signals derived from a reference signal x(n) by adaptive filtering carried out by a programmed microprocessor and memory unit (36) which adapts the filtering in dependence on error signals el(n) from four microphones (421, 422, 423 and 424) distributed ...
Stephen J. Elliott +2 more
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The Journal of the Acoustical Society of America, 1996
A method of and system for active vibration control in an elongate member such as a pipe (2), wherein an actuator which comprises at least one constrictive element (3) capable of changing its length is attached between flanges (1) spaced along the member and is controlled to produce deformations of the member which inhibit the transmission of unwanted ...
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A method of and system for active vibration control in an elongate member such as a pipe (2), wherein an actuator which comprises at least one constrictive element (3) capable of changing its length is attached between flanges (1) spaced along the member and is controlled to produce deformations of the member which inhibit the transmission of unwanted ...
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Active vibration control system
The Journal of the Acoustical Society of America, 2006An active vibration control system including a sensor responsive to a source of vibration and which provides an output signal representative of the vibrations; at least one actuator positioned to impart canceling vibrations to the source of vibrations based on an input signal; a correction subsystem responsive to the actuator for estimating the sensor ...
Wayne Hill, Lev S. Tsimring
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2020
This chapter is dedicated to the target field of adaptronics “Active Vibration Control”. Following on from the previous chapter, simple analytical considerations on beam models provide the basis for modeling vibrations in continuous systems with applied functional elements.
Johannes Michael Sinapius +2 more
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This chapter is dedicated to the target field of adaptronics “Active Vibration Control”. Following on from the previous chapter, simple analytical considerations on beam models provide the basis for modeling vibrations in continuous systems with applied functional elements.
Johannes Michael Sinapius +2 more
openaire +1 more source
Thin Plate Active Vibration Control
2021 22nd International Carpathian Control Conference (ICCC), 2021This article investigates active vibration control of thin plates using piezoceramic actuators. The piezoceramic actuator is in disc form and is tightened by screws to the centre of plate which is a piece of stainless steel sheet excited by small shaker. Paper describes method of identification of the laboratory model and also creation of approximation
Vaclav Pavelka +2 more
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The Journal of the Acoustical Society of America, 1992
A vibration mount by which a subject body (10) is mounted on a support (12) by means of an intermediate body (16), and constrictive actuators (22, 24) each of whose dimensions can be changed in a controllable manner by signals supplied from a computer receiving information from sensors on the intermediate body, applies controlled compensating forces to
Sean G. C. Sutcliffe +2 more
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A vibration mount by which a subject body (10) is mounted on a support (12) by means of an intermediate body (16), and constrictive actuators (22, 24) each of whose dimensions can be changed in a controllable manner by signals supplied from a computer receiving information from sensors on the intermediate body, applies controlled compensating forces to
Sean G. C. Sutcliffe +2 more
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Active vibration control systems
The Journal of the Acoustical Society of America, 1993An active vibration control system for reducing vibration of a structure includes a first control loop comprising sensors for sensing forces in a primary vibratory load path and providing signals to a control unit incorporating time domain control logic for providing first actuator demand signals, a second control loop comprising sensors for sensing ...
Alan E. Staple, Bruce A. MacDonald
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Active vibration control system
The Journal of the Acoustical Society of America, 1995An adaptive control circuit is responsive to a reference signal, i.e. an output from a sensor which senses vibration from a vibration source, for generating a cancelling signal having a transfer characteristic inverse to a transfer characteristic of vibration from the vibration source to a human body.
Hideshi Sawada, Hisashi Sano
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