Active vibration isolation using an inertial actuator with local force feedback control

2004 ◽  
Vol 276 (1-2) ◽  
pp. 157-179 ◽  
Author(s):  
L Benassi ◽  
S.J Elliott ◽  
P Gardonio
Keyword(s):  
Feedback Control ◽  
Vibration Isolation ◽  
Force Feedback ◽  
Active Vibration ◽  
Inertial Actuator ◽  
Active Vibration Isolation

FORCE FEEDBACK VERSUS ACCELERATION FEEDBACK IN ACTIVE VIBRATION ISOLATION

2002 ◽  
Vol 257 (4) ◽  
pp. 605-613 ◽  
Author(s):  
A. PREUMONT ◽  
A. FRANÇOIS ◽  
F. BOSSENS ◽  
A. ABU-HANIEH
Keyword(s):  
Vibration Isolation ◽  
Force Feedback ◽  
Acceleration Feedback ◽  
Active Vibration ◽  
Active Vibration Isolation

Active vibration isolation feedback control for Coriolis Mass-Flow Meters

2014 ◽  
Vol 33 ◽  
pp. 76-83 ◽  
Author(s):  
L. van de Ridder ◽  
M.A. Beijen ◽  
W.B.J. Hakvoort ◽  
J. van Dijk ◽  
J.C. Lötters ◽  
...  
Keyword(s):  
Feedback Control ◽  
Mass Flow ◽  
Vibration Isolation ◽  
Flow Meters ◽  
Active Vibration ◽  
Active Vibration Isolation

scholarly journals Active Vibration Isolation Using an Induced Strain Actuator with Application to Automotive Seat Suspensions

2001 ◽  
Vol 8 (5) ◽  
pp. 271-285 ◽  
Author(s):  
Mark Malowicki ◽  
Donald J. Leo
Keyword(s):  
Feedback Control ◽  
Numerical Simulations ◽  
Vibration Isolation ◽  
Piezoceramic Actuator ◽  
Isolation Frequency ◽  
Active Isolation ◽  
Recent Developments ◽  
Active Vibration ◽  
Seat Control ◽  
Active Vibration Isolation

Active vibration isolation of automotive seats requires actuators that achieve millimeter-range displacements and forces on the order of 300 N. Recent developments in piezoceramic actuator technology provide a means for achieving these force and displacement levels in a compact device. This work demonstrates that prestressed, curved piezoceramic actuators achieve the force and displacement levels required for active isolation of automotive seats. An estimate of the force and displacement requirements are obtained from numerical simulations on a four-degree-of-freedom car and seat model that utilize representive road accelerations as inputs. An actuator that meets these specifications is designed using piezoceramic materials. Free displacement of 4.4 mm and blocked force greater than 300 N are measured. The actuator is integrated within a dead mass setup that simulates the isolation characteristics of an automotive seat. Control experiments demonstrate that active vibration is achievable with realistic road disturbances. Feedback control is able to eliminate any amplification due to mechanical resonance and reduce the isolation frequency from 9.5 Hz to 2 Hz.

Active Vibration Isolation for A Parallel Wheel-legged Robot Based on Dynamic Model

2020 ◽  
Author(s):  
Fei Guo ◽  
Shoukun Wang ◽  
Binkai Yue ◽  
Junzheng Wang
Keyword(s):  
Dynamic Model ◽  
Vibration Isolation ◽  
Force Feedback ◽  
Impedance Control ◽  
Inverse Kinematic ◽  
Control Input ◽  
Control Approach ◽  
Active Vibration ◽  
Robot Body ◽  
Active Vibration Isolation

Abstract Serving Stewart plat as wheel-legged construction, the most outstanding superiority of proposed wheel-legged hybrid robot (WLHR) is active vibration isolation during rolling on rugged terrain. This paper presents a force-driven control approach based on model predictive control (MPC) to design optimal control input for Stewart parallel wheel-leg that locomotes using swing foot trajectory. Adding adaptive impedance control in outermost loop, controlling framework prevents robot body horizontal and from vibration over rolling motion. Through dynamic model of Stewart mechanism, controller first creates predictive model by combining Newton-Euler equation, Newton-Raphson iteration of forward kinematic solving for current configuration, inverse kinematic calculation of Stewart obtaining desired joint position, and Gain/Integration module determining reference torque. With minimizing control deviation and input as objective function, a novel control optimization formulation generates optimum input for each control duration. These actuating force naturally enables each strut stretching and retracting used to realize six degree-of-freedom (6DOF) motion for Stewart wheel-leg. We exploit the variable-adapting method to reasonably adjust environmental impedance parameters by current position, velocity, force feedback of wheel-leg. This allow us to adequately acknowledge the desired support force tracking, isolating robot from isolation that is generated from unknown terrain. We demonstrate the validation of our control methodology on physical prototype by tracking a Bezier curve and active vibration isolation while the robot is rolling on decelerate strip. Respectively given PI controller and a sort of traditional impedance controller as comparison, a better performance of proposed algorithm was operated and evaluated through displacement and force sensors internally-installed in each cylinder, as well as IMU mounted on robot body.

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