Results 241 to 250 of about 12,952,420 (296)
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The Journal of the Acoustical Society of America, 1993
A method of and a system for active vibration control of an extended mechanical structure having a point or region at which unwanted vibrations are to be reduced or suppressed, wherein a plurality of uni-axial inertial actuators (4, 5) are disposed to act on a rigid intermediate part such as a flange (1) attached to the point or region of the structure.
Stephen J. Elliott +2 more
+5 more sources
A method of and a system for active vibration control of an extended mechanical structure having a point or region at which unwanted vibrations are to be reduced or suppressed, wherein a plurality of uni-axial inertial actuators (4, 5) are disposed to act on a rigid intermediate part such as a flange (1) attached to the point or region of the structure.
Stephen J. Elliott +2 more
+5 more sources
Active control of mechanical vibrations
Bell Labs Technical Journal, 2009Recent advances in digital signal processing and actuation technology have opened the door to applying active control to reducing mechanical vibrations and acoustic noise. Because these techniques work best at lower frequency, they complement conventional passive damping techniques, which are most effective at higher frequencies.
Roger D. Benning +2 more
openaire +2 more sources
Applied Acoustics, 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 ...
+4 more sources
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 ...
+4 more sources
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
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
Active control of vibrations in spacecraft
ICASSP-88., International Conference on Acoustics, Speech, and Signal Processing, 2003The active control of vibration in structures can be classed broadly into two areas: (i) the isolation of sensitive equipment from unwanted vibrations; and (ii) modification of the dynamic properties of structures. The control systems can become extremely complex for large structures.
openaire +1 more source