Passive skyhook and groundhook damping vibration isolation system
First Claim
1. A 2DOF passive skyhook and groundhook damping vibration isolation system, the system comprising:
- a spring k-damper c parallel body, a spring kt-damper ct parallel body, a skyhook damper csky, a groundhook damper cgnd, a moving foundation, a mass m1 vibration state converting system, and a mass m2 vibration state converting system;
wherein the spring kt-damper ct parallel body consists of a spring kt and a damper ct connected in parallel;
the mass m1 vibration state converting system comprises a mass m1 and a mass m1 vibration state converter, the mass m1 vibration state converter consisting of a spring k1 and an inerter b1 connected in parallel, the mass m1 vibration state converter being connected in series to and supporting the mass m1;
the spring kt-damper ct parallel body is connected in series to the mass m1 vibration state converter and supports the whole mass m1 vibration state converting system via the mass m1 vibration state converter;
the moving foundation is connected in series to and supports the spring kt-damper ct parallel body;
the groundhook damper cgnd is connected in parallel to the mass m1 vibration state converter to form the parallel body of the mass m1 vibration state converter and the groundhook damper cgnd;
wherein the spring k-damper c parallel body consists of a spring k and a damper c connected in parallel;
the mass m2 vibration state converting system comprises a mass m2 and a mass m2 vibration state converter, the mass m2 vibration state converter consisting of a spring k2 and an inerter b2 connected in parallel, the mass m2 vibration state converter being connected in series to and supporting the mass m2;
the spring k-damper c parallel body is connected in series to the mass m2 vibration state converter, and supports the whole mass m2 vibration state converting system via the mass m2 vibration state converter;
the mass m1 is connected in series to and supports the spring k-damper c parallel body;
the skyhook damper csky is connected in parallel to the mass m2 vibration state converter to form the parallel body of the mass m2 vibration state converter and the skyhook damper csky;
wherein in the 2DOF passive skyhook and groundhook damping vibration isolation system, the mass of the mass m2 is m2, the stiffness of the spring k2 is k2, the inerterance of the inerter b2 is b2, the damping of the skyhook damper csky is csky, the stiffness of the spring k is k, the damping of the damper c is c;
the mass of the mass m1 is m1,the stiffness of the spring k1 is k1, the inerterance of the inerter b1 is b1, the damping of the groundhook damper cgnd is cgnd, the stiffness of the spring kt is kt, and the damping of the damper ct is ct,wherein k1 and k2 are selected, as a result kt/3≦
k1≦
kt and k/3≦
k2≦
k,
1 Assignment
0 Petitions
Accused Products
Abstract
A passive skyhook and groundhook damping vibration isolation system and a method for determining parameters thereof, which utilize the anti-resonance of an “inerter (b1, b2)-spring (k1, k2)-mass (m1, m2)” vibration state converting system to convert the resonance of the isolated mass into the resonance of the inerter, thus eliminating the resonance of the isolated mass, is provided. A damper spans and is connected in parallel to the inerter, preventing the damper from spanning and being connected in parallel to the isolated mass. The damper is not required to connect to an inertial reference frame, and the vibration of the isolated mass is suppressed.
6 Citations
13 Claims
-
1. A 2DOF passive skyhook and groundhook damping vibration isolation system, the system comprising:
-
a spring k-damper c parallel body, a spring kt-damper ct parallel body, a skyhook damper csky, a groundhook damper cgnd, a moving foundation, a mass m1 vibration state converting system, and a mass m2 vibration state converting system; wherein the spring kt-damper ct parallel body consists of a spring kt and a damper ct connected in parallel;
the mass m1 vibration state converting system comprises a mass m1 and a mass m1 vibration state converter, the mass m1 vibration state converter consisting of a spring k1 and an inerter b1 connected in parallel, the mass m1 vibration state converter being connected in series to and supporting the mass m1;
the spring kt-damper ct parallel body is connected in series to the mass m1 vibration state converter and supports the whole mass m1 vibration state converting system via the mass m1 vibration state converter;
the moving foundation is connected in series to and supports the spring kt-damper ct parallel body;
the groundhook damper cgnd is connected in parallel to the mass m1 vibration state converter to form the parallel body of the mass m1 vibration state converter and the groundhook damper cgnd;wherein the spring k-damper c parallel body consists of a spring k and a damper c connected in parallel;
the mass m2 vibration state converting system comprises a mass m2 and a mass m2 vibration state converter, the mass m2 vibration state converter consisting of a spring k2 and an inerter b2 connected in parallel, the mass m2 vibration state converter being connected in series to and supporting the mass m2;
the spring k-damper c parallel body is connected in series to the mass m2 vibration state converter, and supports the whole mass m2 vibration state converting system via the mass m2 vibration state converter;
the mass m1 is connected in series to and supports the spring k-damper c parallel body;
the skyhook damper csky is connected in parallel to the mass m2 vibration state converter to form the parallel body of the mass m2 vibration state converter and the skyhook damper csky;wherein in the 2DOF passive skyhook and groundhook damping vibration isolation system, the mass of the mass m2 is m2, the stiffness of the spring k2 is k2, the inerterance of the inerter b2 is b2, the damping of the skyhook damper csky is csky, the stiffness of the spring k is k, the damping of the damper c is c;
the mass of the mass m1 is m1,the stiffness of the spring k1 is k1, the inerterance of the inerter b1 is b1, the damping of the groundhook damper cgnd is cgnd, the stiffness of the spring kt is kt, and the damping of the damper ct is ct, wherein k1 and k2 are selected, as a result kt/3≦
k1≦
kt and k/3≦
k2≦
k, - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
Specification