Lord Corporation

Douglas Pedersen

Paul Black

David Edeal

Askari Badre-Alam

Douglas A Swanson

Doug Swanson

David J Clark

Mark R Jolly

Christopher P Townsend

Stephen F Hildebrand

Wayne Lee Winzenz

Ian Cassidy

A control system for resonant inertial actuators estimates operating parameters of the resonant inertial actuators based on voltage and current feedback and dynamically limits selected parameters to maintain the safe, efficient, and cost effective operation of the resonant inertial actuators. Resistance within the electrical drives for the resonant inertial actuators is estimated from the voltage and current feedback and in conjunction with the modeling of the resonant inertial actuators other operating parameters are calculated or otherwise estimated. Having regard for the responsiveness of the resonant inertial actuators to changes in command signals, the command signals are adjusted to dynamically limit the estimated parameters.

Rotary wing aircraft vibration control system with resonant inertial actuators

Structural health monitoring and protection systems and methods are provided. System and methods utilize structural information and/or enhanced built in testing capabilities for detecting failure modes that may cause damage to a structure. Systems and methods herein may protect a structure by mitigating one or more incorrect forces. The structure may be an aircraft, a rotary wing aircraft, or any other physical structure subject to vibrations and receptive to canceling of those vibrations.

Systems and methods for structural health monitoring and protection

Devices, systems, and related methods for balancing two or more pieces of independently rotating (e.g., not synchrophased) machinery are provided. In some aspects, the devices, systems, and methods can provide improved balancing techniques and can include providing a controller configured to simultaneously measure/receive vibration data and control balancers, one balancer at a time. In some aspects, the controller can calculate a beating cycle or a beating period using vibration data received from multiple rotating machines. In some aspects, a balance correction command can be derived in part from either one of: (a) an interpolation of an average vibration of the first rotating machine from a complex vibration of the multiple rotating machines or (b) an average vibration derived from one or more rules applied based upon the duration of the beating period or the beating cycle.

Devices, systems, and methods for balancing closely coupled rotating machinery

Active vibration control systems () and methods are provided herein. Systems () are expandable and include a plurality of vibration control devices () and at least a first controller () digitally linked with a second controller () via an interface (). The first and the second controllers exchange information for generation of a force control command (FCC) either the first or second controller. The FCC is then executed at a first vibration control device () of the plurality of vibration control devices (FG) for providing active vibration control within a vehicle. A method of providing vibration control in a vehicle includes providing a plurality of active vibration control devices () and providing at least a first controller () digitally linked with a second controller (). The method further includes generating a FCC using information exchanged between the first and the second controllers. The method further includes sending the FCC to a first vibration control device () of the plurality of devices (FG).

Active vibration control systems and methods for vehicles

Growing community of inventors

Apex, NC, United States of America

Douglas Pedersen