Active vibration control for seismic excited building structures under actuator saturation, measurement stochastic noise and quantisation

2018 ◽  
Vol 156 ◽  
pp. 1-11 ◽  
Author(s):  
Lanlan Xu ◽  
Yunyan Yu ◽  
Yanliang Cui
Keyword(s):  
Vibration Control ◽  
Actuator Saturation ◽  
Active Vibration Control ◽  
Stochastic Noise ◽  
Building Structures ◽  
Active Vibration ◽  
Saturation Measurement

Alternative tuning method for proportional-derived gains for active vibration control in a building structure

2021 ◽  
pp. 014233122110210
Author(s):  
Andres Rodriguez-Torres ◽  
Jesús Morales-Valdez ◽  
Wen Yu
Keyword(s):  
Vibration Control ◽  
Vibration Suppression ◽  
Active Vibration Control ◽  
Sufficient Conditions ◽  
Design Procedure ◽  
Structural Vibration ◽  
Building Structures ◽  
Pd Controller ◽  
Tuning Method ◽  
Active Vibration

The article deals with the development of active vibration control of seismically-excited building structures. The control scheme is based on an alternative proportional-derived (PD) controller designed based only on the bandwidth of the system, which is an attractive technique for structural vibration suppression purposes and practical motion control solutions. The tuning method is analyzed employing Kharitonov’s theorem and Routh-Hurwitz criteria, which give necessary and sufficient conditions for choosing the two PD range of gains. Based on modal analysis, the system is transformed into a set of decoupled ordinary differential equations to simplify the PD design. An important advantage concerning a classical PD controller is the proposed PD design only uses the natural frequencies, which are relatively easy to estimates around an experimental test. Moreover, the proposed approach does not need frequently tune the gains parameters, so the design procedure is greatly simplified and, the proposed scheme does not need the system parameters, which generally are unknown. This method allows generalizing the controller design for multi-story buildings without modifying the controller structure, by choosing a scalar parameter. The effectiveness of the proposed PD schemes is demonstrated through simulation and experimental results of a reduced scale two-story building prototype.

Singular System-Based Approach for Active Vibration Control of Vehicle Seat Suspension

2020 ◽  
Vol 142 (9) ◽  
Author(s):  
Wenxing Li ◽  
Haiping Du ◽  
Zhiguang Feng ◽  
Donghong Ning ◽  
Weihua Li ◽  
...  
Keyword(s):  
Vibration Control ◽  
Ride Comfort ◽  
Actuator Saturation ◽  
Singular System ◽  
Active Vibration Control ◽  
Seat Suspension ◽  
Active Vibration ◽  
System States ◽  
Suspension Model ◽  
Vehicle Seat

Abstract This paper proposes a singular system-based approach for active vibration control of vehicle seat suspensions, where the drivers' acceleration is augmented into the conventional seat suspension model together with seat suspension deflection and relative velocity as system states to make the suspension model as a singular system. In this novel seat suspension system, all the system states are easy to measure in real-time. A friction observer is applied to estimate the real system friction and an H∞ controller is designed to achieve the optimal ride comfort performance with consideration of the friction compensation, actuator saturation, and time delay issues. The cone complementarity linearization (CCL) algorithm is applied to solve the nonlinear constraints. The experimental results show that good ride comfort performance can be achieved by the proposed controller in both the time and frequency domain compared with the uncontrolled seat suspension.

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