Patent ID: 7974769

Claim:
An integrated closed-loop method of counteracting the effects of vibratory forces produced by an engine, and isolating the forces from an adjacent body, wherein said engine presents a manifold absolute pressure, crank angle, θ, speed, ω, and firing frequency equal to ω times an order, p, said method comprising the steps of: a) inputting the firing frequency and the manifold absolute pressure into an open-loop control algorithm; b) executing the open-loop control algorithm after receiving the angle and order to determine an open-loop control input; c) inputting engine characteristic data, including the frequency, into a closed-loop control algorithm; d) executing the closed-loop control algorithm after receiving the characteristic data to determine a closed-loop control input; e) combining the open and closed-loop control inputs to achieve a resultant control input signal; f) activating and delivering the resultant control input signal to at least one active engine mount secured intermediate the engine and body so as to generate a counteracting output and result in a current residual vibration at the mount; and g) determining the current residual vibration, modifying the characteristic data to include the current residual vibration, and feeding the current residual vibration back to the closed-loop control algorithm.