The Study on Vehicle EHA Active Suspension with Time-Delay Control

2012 ◽  
Vol 178-181 ◽  
pp. 2002-2005
Author(s):  
Fa Rong Kou
Keyword(s):  
Time Delay ◽  
Dynamic Performance ◽  
Graph Model ◽  
Active Suspension ◽  
Hydraulic Cylinder ◽  
Bond Graph ◽  
Control Force ◽  
Time Delay Control ◽  
The Road ◽  
Delay Control

A new vehicle active suspension with Electro-Hydrostatic Actuator (EHA) is suggested. The system consists of two parts: spring and actuator with variable control force. The actuator includes hydraulic cylinder, hydraulic pump, controller, etc. According to bond graph principle, bond graph model of EHA active suspension are built. For vehicle active suspension system, unavoidable time delay may appear in the controllable course. Time-delay influence on the dynamic performance of vehicle active suspension is analyzed. Physical prototype and experimental rig for EHA active suspension is built. Then the tests of suspension prototype with time-delay control are carried out on the developed test rig. The results show that the sprung mass acceleration of the active suspension with time-delay compensation significantly declines by 11.56% under the road input of 1.1Hz and by 12.8% under the road input of 1.5Hz

The Simulation and Experimental Study on a Novel Vehicle Active Suspension with Electro-Hydrostatic Actuator

2012 ◽  
Vol 430-432 ◽  
pp. 1984-1987
Author(s):  
Fa Rong Kou ◽  
Jian Ma ◽  
Ji Bai Wang
Keyword(s):  
Fuzzy Control ◽  
Fuzzy Logic Controller ◽  
Ride Comfort ◽  
Graph Model ◽  
Active Suspension ◽  
Hydraulic Cylinder ◽  
Bond Graph ◽  
Suspension System ◽  
Control Force ◽  
Passive Suspension

Actuator is a very important part of vehicle active control suspension. Based on the analyses of traditional passive suspension and active suspension system, a novel vehicle active suspension with Electro-Hydrostatic Actuator (EHA) is put forward. The system consists of two parts: spring and actuator with variable control force. The actuator includes hydraulic cylinder, hydraulic pump, controller, etc. According to bond graph principle, bond graph model of EHA active suspension are built. In addition, sky-hook controller and fuzzy logic controller are designed and sky-hook control and fuzzy control active suspension are simulated using MATLAB tools. The prototype and test rig of EHA active suspension are developed and bench tests are carried out. The simulation and experimental results show that sky-hook control and fuzzy control active suspension with EHA provide better ride comfort and stability than passive suspension system.

The Control Study of Vehicle Active Suspension with Electro-Hydrostatic Actuator

2011 ◽  
Vol 97-98 ◽  
pp. 716-720 ◽  
Author(s):  
Fa Rong Kou
Keyword(s):  
Fuzzy Control ◽  
Fuzzy Logic Controller ◽  
Ride Comfort ◽  
Graph Model ◽  
Active Suspension ◽  
Hydraulic Cylinder ◽  
Bond Graph ◽  
Control Force ◽  
Passive Suspension ◽  
System A

Actuator is the key to vehicle active suspension. Based on the analyses of traditional passive suspension and active suspension system, a novel vehicle active suspension with Electro-Hydrostatic Actuator (EHA) is put forward. The system consists of two parts: spring and actuator with variable control force. The actuator is made up of hydraulic cylinder, hydraulic pump, controller and BLDCM. According to bond graph principles, bond graph model of 2 DOF passive suspensions and bond graph model of EHA active suspension are built. Moreover, fuzzy logic controller is designed and fuzzy control active suspension is simulated using MATLAB tools. The prototype and test rig of EHA active suspension are developed and bench tests are carried out. The simulation and experimental results show that fuzzy control active suspension with EHA provides better ride comfort, handling and stability than passive suspension.

The Time-Delay Study on Vehicle Active Control Suspension

2011 ◽  
Vol 383-390 ◽  
pp. 52-58
Author(s):  
Fa Rong Kou
Keyword(s):  
Time Delay ◽  
Fuzzy Controller ◽  
Dynamic Performance ◽  
Critical Time ◽  
Active Suspension ◽  
Suspension System ◽  
Delay Compensation ◽  
The Road ◽  
Key Factor ◽  
Time Delay Compensation

Actuator is a key factor for vehicle active suspension. A new vehicle active suspension is put forward based on the Electro-Hydrostatic Actuator (EHA).For vehicle active suspension system, unavoidable time delay may appear in the controllable course. The critical time-delay of EHA active suspension is calculated in this paper and time-delay influence on the dynamic performance of vehicle active suspension is analyzed. A time-delay compensation strategy for EHA active suspension is proposed to reduce time delay. A self-adapting fuzzy controller is designed and applied to active suspension system with EHA. Physical prototype and experimental rig for EHA active suspension are built. Then time-delay tests of suspension prototype are carried out on the developed test rig. Test results show that the sprung mass acceleration of the active suspension with time-delay compensation significantly declines by 12.4% under the road input of 1.2Hz and by 13.6% under the road input of 1.6Hz.

A study on active suspension system using time delay control

2007 ◽  
Author(s):  
Dong-Ji Xuan ◽  
Jin-Wan Kim ◽  
Joung-Ill Zang ◽  
Young-Bae Kim
Keyword(s):  
Time Delay ◽  
Active Suspension ◽  
Suspension System ◽  
Time Delay Control ◽  
Delay Control

scholarly journals Time-delay control for stabilization of the Shapovalov mid-size firm model

2020 ◽  
Vol 53 (2) ◽  
pp. 16971-16976
Author(s):  
T.A. Alexeeva ◽  
W.A. Barnett ◽  
N.V. Kuznetsov ◽  
T.N. Mokaev
Keyword(s):  
Time Delay ◽  
Time Delay Control ◽  
Delay Control ◽  
Size Firm ◽  
Firm Model

scholarly journals Robust-adaptive dynamic programming-based time-delay control of autonomous ships under stochastic disturbances using an actor-critic learning algorithm

2021 ◽  
Author(s):  
Hossein Nejatbakhsh Esfahani ◽  
Rafal Szlapczynski
Keyword(s):  
Dynamic Programming ◽  
Time Delay ◽  
Control Algorithm ◽  
Approximate Dynamic Programming ◽  
Robust Adaptive Control ◽  
Stochastic Disturbances ◽  
Time Delay Control ◽  
Model Free ◽  
Delay Control ◽  
Robust Adaptive

AbstractThis paper proposes a hybrid robust-adaptive learning-based control scheme based on Approximate Dynamic Programming (ADP) for the tracking control of autonomous ship maneuvering. We adopt a Time-Delay Control (TDC) approach, which is known as a simple, practical, model free and roughly robust strategy, combined with an Actor-Critic Approximate Dynamic Programming (ACADP) algorithm as an adaptive part in the proposed hybrid control algorithm. Based on this integration, Actor-Critic Time-Delay Control (AC-TDC) is proposed. It offers a high-performance robust-adaptive control approach for path following of autonomous ships under deterministic and stochastic disturbances induced by the winds, waves, and ocean currents. Computer simulations have been conducted under two different conditions in terms of the deterministic and stochastic disturbances and all simulation results indicate an acceptable performance in tracking of paths for the proposed control algorithm in comparison with the conventional TDC approach.

Sign in / Sign up

Export Citation Format

Share Document