Hybrid Variable Damping Control: Design, Simulation, and Optimization

2013 ◽  
Author(s):  
Roberto Ribeiro ◽  
Mir Behrad Khamesee ◽  
Amir Khajepour
Keyword(s):  
Variable Component ◽  
Worst Case ◽  
Variable Threshold ◽  
Hybrid Variable ◽  
Simulation And Optimization ◽  
Damping Control ◽  
Optimal Damping ◽  
Variable Damping ◽  
Damper Design ◽  
Hybrid Damper

Damping in a multitude of engineering applications has a variable threshold requirement based on system excitation. Since system excitation is also variable; dampers are designed such that a maximum amount of damping is provided (based on the worst case for a structure), opposed to an optimal amount as a function of excitation. By implementing a hybrid damper design based on a bias component provided through a hydraulic medium and a variable component provided by electromagnetics; an optimal damping quantity can be obtained for a given excitation.

Hybrid variable damping control: design, simulation, and optimization

2014 ◽  
Vol 20 (8-9) ◽  
pp. 1723-1732 ◽  
Author(s):  
Roberto Ribeiro ◽  
Ehsan Asadi ◽  
Mir Behrad Khamesee ◽  
Amir Khajepour
Keyword(s):  
Control Design ◽  
Hybrid Variable ◽  
Simulation And Optimization ◽  
Damping Control ◽  
Variable Damping

scholarly journals Variable damping control strategy of a semi-active suspension based on the actuator motion state

2019 ◽  
Vol 39 (3) ◽  
pp. 787-802 ◽  
Author(s):  
Mingde Gong ◽  
Hao Chen
Keyword(s):  
Control Strategy ◽  
Ride Comfort ◽  
Active Suspension ◽  
Suspension System ◽  
Heavy Vehicles ◽  
Damping Force ◽  
Damping Control ◽  
Motion State ◽  
Variable Damping ◽  
Work First

A semi-active suspension variable damping control strategy for heavy vehicles is proposed in this work. First, a nine-degree-of-freedom model of a semi-active suspension of heavy vehicles and a stochastic road input mathematical model are established. Second, using a 1/6 vehicle as an example, a semi-active suspension system with damping that can be adjusted actively is designed using proportional relief and throttle valves. The damping dynamic characteristics of the semi-active suspension system and the time to establish the damping force are studied through a simulation. Finally, a variable damping control strategy based on an actuator motion state is proposed to adjust the damping force of the semi-active suspension system actively and therefore satisfy the vibration reduction requirements of different roads. Results show that the variable damping control suspension can substantially improve vehicle ride comfort and handling stability in comparison with a passive suspension.

Wide-area optimal damping control for power systems based on the ITAE criterion

2019 ◽  
Vol 106 ◽  
pp. 192-200 ◽  
Author(s):  
Yonghui Nie ◽  
Yidan Zhang ◽  
Yan Zhao ◽  
Binbin Fang ◽  
Lili Zhang
Keyword(s):  
Power Systems ◽  
Wide Area ◽  
Damping Control ◽  
Optimal Damping

Force-Dependent Variable Damping Control for Positioning Task Assist

2007 ◽  
Vol 25 (2) ◽  
pp. 306-313 ◽  
Author(s):  
Naoyuki Takesue ◽  
Ryo Kikuuwe ◽  
Akihito Sano ◽  
Hiromi Mochiyama ◽  
Hideaki Sawada ◽  
...  
Keyword(s):  
Damping Control ◽  
Variable Damping

Modeling, Control, and Validation of Electrohydrostatic Shock Absorbers

2015 ◽  
Vol 137 (1) ◽  
Author(s):  
Renato Galluzzi ◽  
Andrea Tonoli ◽  
Nicola Amati
Keyword(s):  
Dynamic Performance ◽  
Working Environment ◽  
Modeling And Control ◽  
Active Devices ◽  
Shock Absorbers ◽  
Damping Control ◽  
Variable Damping ◽  
And Control ◽  
Damping Systems

The implementation of variable damping systems to increase the adaptability of mechanical structures to their working environment has been gaining increasing scientific interest, and numerous attempts have been devoted to address vibration control by means of active and semi-active devices. Although research results seem promising in some cases, the proposed solutions are often not able to fulfill requirements in terms of compactness and simplicity on one hand, and dynamic performance on the other. In this context, the present paper discusses the modeling and control of an electrohydrostatic actuation (EHA) system for its implementation as a damping device. A model of the device is proposed and analyzed for design purposes. Subsequently, a damping control strategy is presented. Finally, a case study introduces and validates an EHA prototype for helicopter rotor blade lead–lag damping.

Magneto-Rheological (MR) Damper Design for High-Flowrate Suspensions

2013 ◽  
Author(s):  
Riaan F. Meeser ◽  
P. Schalk Els ◽  
Sudhir Kaul
Keyword(s):  
Mr Damper ◽  
Damping Force ◽  
Mr Fluid ◽  
Bingham Plastic ◽  
Damping Characteristics ◽  
Final Design ◽  
Variable Damping ◽  
Input Variables ◽  
Damper Design ◽  
Magneto Rheological

This paper presents the design of a magneto-rheological (MR) damper for an off-road vehicle where large suspension travel and high flow rates, as compared to typical passenger car suspensions, are required. The MR damper is expected to enhance the capability of the suspension system by allowing variable damping due to inherent properties of the MR fluid. MR fluids exhibit a reversible behavior that can be controlled with the intensity of a magnetic field, allowing a change in the effective viscosity and thereby in the damping characteristics of the fluid. A mathematical model of the proposed damper has been developed using the Bingham plastic model so as to determine the necessary geometry for the damper designed in this study, using the fluid flow rate and current to the electromagnet as the input variables. The model is used to compute the damping force, and the analytical results show that the designed MR damper provides the required range of damping force for the specific vehicle setup that is being used for this study. A valve-mode MR fluid channel has been designed such that the required minimum damping is reached in the off-state, and the desired maximum damping is reached in the on-state. For manufacturing and size considerations, the final design incorporates a triple pass layout with the MR fluid flowing through the three passages that are arranged in an S-shape so as to minimize the cross section of the electromagnet core.

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