초록 ▼

A plural orthogonal feed forward control system with an actuator system for installation on an upper floor or area of a building as an integral part of a building\s structural supports to control seismic, wind, or wave disturbances to the structure or building. Control means include upstream and dua

A plural orthogonal feed forward control system with an actuator system for installation on an upper floor or area of a building as an integral part of a building\s structural supports to control seismic, wind, or wave disturbances to the structure or building. Control means include upstream and dual orthogonal downstream sensor arrays for determination of input and output error signals, plural orthogonal anti-feedback filters, and the plural adaptive weight updates to best determine the orthogonal components of the cancellation signal. The cancellation signal is acted on by the variable controlling force apparatus consisting of hydraulic or other actuators with stiff rods attached to the building structure and connected with a movable mass. The device works on orthogonal components of the disturbance, and is capable of attenuating simultaneously signals whose spectra contain multiple narrowband and/or combined narrowband and broadband character.

대표청구항 ▼

An active vibration control system for attenuating an input vibration field within a building structure resulting from externally applied, seismic or other environmentally induced, disturbances acting upon the building structure, the control system comprising: a plurality of input sensors positionab

An active vibration control system for attenuating an input vibration field within a building structure resulting from externally applied, seismic or other environmentally induced, disturbances acting upon the building structure, the control system comprising: a plurality of input sensors positionable about a building structure for sensing incoming disturbances in advance of the disturbances reaching the building structure and for converting such sensed disturbances to a reference signal; orthogonal component separation means for receiving the reference signal and converting the reference signal into orthogonal reference signal components; a plurality of output sensors positionable on a building structure for sensing building structure vibrations and for converting such sensed vibrations to orthogonal output signals; vibration actuator means for imparting a cancellation vibration field to a building structure so as to counteract said input vibration field and to reduce building structure vibrations, said vibration actuator means including orthogonally oriented actuators responsive to orthogonal actuator driving signals; plural orthogonal feed forward controller means for receiving said orthogonal reference signal components and said orthogonal output signals and for providing orthogonal actuator driving signals to said vibration actuator means, said plural orthogonal feed forward controller means comprising a plurality of feed forward controllers corresponding in number to the number of orthogonal reference signal components, each controller comprising: first controller input means for receiving one of said orthogonal reference signal components; second controller input means for receiving a corresponding orthogonal output signal; digital signal processing means for response to said orthogonal reference signal component and said orthogonal output signal and for providing an orthogonal actuator driving signal to said vibration actuator means so as to drive said orthogonally oriented actuators to impart a cancellation vibration field to the building structure to counteract said input vibration field.