Active Suspension Control of High-Performance Elevators

2014 ◽  
Vol 902 ◽  
pp. 231-238 ◽  
Author(s):  
Santiago M. Rivas López ◽  
Mario R. Sobczyk S. ◽  
Fabiano D. Wildner ◽  
Eduardo A. Perondi
Keyword(s):  
High Performance ◽  
Active Suspension ◽  
Control Algorithms ◽  
Control Techniques ◽  
Suspension Systems ◽  
Cycle Simulation ◽  
Active Suspension Systems ◽  
Suspension Control ◽  
Operation Cycle ◽  
The Mathematical Model

This paper addresses a comparative study concerning five control techniques applied to high-performance elevators active suspension systems, such as those employed in "skyscrapers". The main objective is to present the different control techniques and analyze the fundamental characteristics of each controller. To accomplish this, the development of the mathematical model of the controlled system is outlined and its integration with the control algorithms is presented. Besides three classic controllers (State Feedback, PID and Sky Hook), due to the significant dynamic behavior dependence on the mass of the passengers in the total mass transported, two adaptive control algorithms are used to compensate the effects of the mass oscillations of the system as the number of passengers varies along the operation cycle. Simulation results are employed to illustrate the behavior of the system when controlled by means of the presented algorithms.

Investigation of Control Algorithms for Semi-Active Suspension Systems Based on a Full Vehicle Model

2011 ◽  
Author(s):  
M. A. Ajaj ◽  
A. M. Sharaf ◽  
S. A. Hegazy ◽  
Y. H. Hossamel-deen
Keyword(s):  
Control Algorithm ◽  
Shock Absorber ◽  
Ride Comfort ◽  
Active Suspension ◽  
Control Algorithms ◽  
Suspension Systems ◽  
Full Vehicle ◽  
Damping Characteristics ◽  
Active Suspension Systems ◽  
Suspension Control

This paper presents a comprehensive investigation of automotive semi-active suspension control algorithms and compares their characteristics in terms of ride comfort and tire-road holding ability. Particular attention has been paid to the semi-active suspension systems fitted with a shock absorber of dual damping characteristics. Different mathematical models are presented to investigate the ride response considering both simplified and complex vehicle models. Numerical simulation has been carried out through the MATLAB/SIMULINK environment which aids the future development of controllable suspension systems to improve vehicle ride comfort. The results show a considerable improvement of the vehicle ride response using different schemes of semi-active suspension system in particular the modified groundhook control algorithm.

Advanced Control Techniques for Semi-Active Suspension Systems

2021 ◽  
Author(s):  
Jessica Gissella Maradey Lazaro ◽  
Kevin Sebastian C\xe1ceres Mojica ◽  
Silvia Juliana Navarro Quintero
Keyword(s):  
Active Suspension ◽  
Control Techniques ◽  
Suspension Systems ◽  
Active Suspension Systems ◽  
Advanced Control

Active Suspension Control for an Off-Road Vehicle

1987 ◽  
Vol 201 (1) ◽  
pp. 1-10 ◽  
Author(s):  
D A Crolla ◽  
D N L Horton ◽  
R H Pitcher ◽  
J A Lines
Keyword(s):  
Attitude Control ◽  
Ride Comfort ◽  
Active Suspension ◽  
Active System ◽  
Road Vehicle ◽  
Suspension Systems ◽  
Body Attitude ◽  
Active Suspension Systems ◽  
Suspension Control ◽  
Recent Developments

After a review of recent developments in active suspension systems, a semi-active system fitted to an off-road vehicle is described. Theoretically predicted results are presented alongside data measured on the actual vehicle. The benefits of the semi-active system over a passive suspension are improved ride comfort and improved body attitude control.

Active Suspension Control of Elastic Car Structure

1998 ◽  
Vol 10 (1) ◽  
pp. 56-61
Author(s):  
Yasuhisa Fujisaki ◽  
◽  
Katsuaki Kodaka ◽  
Yasuhumi Kawagou ◽  
Kazuto Seto
Keyword(s):  
Active Suspension ◽  
Theory Building ◽  
Vibration Modes ◽  
Plate Structures ◽  
Plate Structure ◽  
Suspension Systems ◽  
Distributed Parameters ◽  
Active Suspension Systems ◽  
Suspension Control ◽  
Lq Control

This study discusses the vibration control of a plate structure supported with active suspension, replacing an elastic car body with a plate structure. Plate structures have typical distributed parameters. Hence, we designed a control system based on LQ control theory, building a six-particle physical model that controls the six-degree modes of bouncing, rolling, and pitching that include vibration modes of bending and torsion. These multiple modes were controlled in simulations and experiments, which verified that vibration in active suspension systems can be controlled.

Robust nonfragile H∞ optimum control for active suspension systems with time-varying actuator delay

2019 ◽  
Vol 25 (18) ◽  
pp. 2435-2452 ◽  
Author(s):  
Wenfeng Li ◽  
Zhengchao Xie ◽  
Pak Kin Wong ◽  
Yucong Cao ◽  
Xingqi Hua ◽  
...  
Keyword(s):  
Performance Optimization ◽  
Ride Comfort ◽  
Active Suspension ◽  
Lyapunov Theory ◽  
Linear Matrix ◽  
Time Varying ◽  
Suspension Systems ◽  
Active Suspension Systems ◽  
Suspension Control ◽  
Linear Matrix Inequality Approach

The active suspension has drawn considerable attention due to its superiority in improving the vehicle vertical dynamics. This paper investigates robust nonfragile H∞ optimal control for the vehicle active suspension with time-varying actuator delay. Firstly, the dynamic equation of an active suspension system with actuator delay is established in terms of the main performance objectives, that is, ride comfort, handling ability, and road holding. Then, a robust nonfragile H∞ optimal controller is proposed to deal with the problem of active suspension control with time delay and actuator uncertainty, which is based on Lyapunov theory, convex optimization, and the linear matrix inequality approach. Finally, a quarter-car test rig is used for an experiment to illustrate the effectiveness of the proposed controller. Simulation and experimental results demonstrate that the proposed controller can ensure the asymptotic stability of the closed-loop system with bounded time-varying actuator delay, while managing the tradeoff between the conflicting performances and achieving performance optimization for the active suspension.

scholarly journals Multi-Modes Control for Semi-Active Suspension Systems

2020 ◽  
Vol 53 (2) ◽  
pp. 14407-14412
Author(s):  
G. BEL HAJ FREJ ◽  
X. MOREAU ◽  
E. HAMROUNI ◽  
A. BENINE-NETO ◽  
V. HERNETTE
Keyword(s):  
Active Suspension ◽  
Suspension Systems ◽  
Active Suspension Systems
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