US 11,873,880 B2
Precision vibration-isolation system with floor feedforward assistance
Igor Kordunsky, Quincy, MA (US); Jeffrey L. Worthey, Waltham, MA (US); and Antonio Lopes, Salem, MA (US)
Assigned to Technical Manufacturing Corporation, Peabody, MA (US)
Filed by Technical Manufacturing Corporation, Peabody, MA (US)
Filed on Nov. 21, 2022, as Appl. No. 18/057,571.
Application 18/057,571 is a continuation of application No. 16/638,073, granted, now 11,512,757, previously published as PCT/US2018/000146, filed on Aug. 15, 2018.
Claims priority of provisional application 62/545,948, filed on Aug. 15, 2017.
Prior Publication US 2023/0092923 A1, Mar. 23, 2023
Int. Cl. F16F 15/00 (2006.01); F16F 7/10 (2006.01); F16F 7/104 (2006.01); F16F 15/02 (2006.01); G05B 19/042 (2006.01)
CPC F16F 7/1005 (2013.01) [F16F 7/104 (2013.01); F16F 15/002 (2013.01); F16F 15/022 (2013.01); G05B 19/042 (2013.01); F16F 2222/08 (2013.01); F16F 2224/0208 (2013.01); F16F 2228/066 (2013.01); F16F 2230/18 (2013.01); G05B 2219/21137 (2013.01); G05B 2219/25252 (2013.01); G05B 2219/25257 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A vibration-isolation system comprising:
an intermediate mass;
a feedback motion sensor arranged to sense motion of the intermediate mass;
a feedforward motion sensor to sense motion of a base;
an actuator configured to drive the intermediate mass relative to the base, wherein the base is configured to support at least the actuator and the intermediate mass; and
a control system configured to process a first signal from the feedback motion sensor and a second signal from the feedforward motion sensor and output a drive signal to drive the actuator to reduce vibrational motion of the intermediate mass, wherein without application of the second signal from the feedforward motion sensor to the control system, vibrational levels of the intermediate mass during operation of the vibration-isolation system saturate the feedback motion sensor.