Dynamic modeling and adjustable damping layered control of air suspension hybrid system

Qiguo, Hu; Lu, Wei; Jiang, Jingzhen

doi:10.1080/14484846.2019.1643643

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…When the vehicle is driving on the random road conditions, the vehicle height vibrates constantly up and down near the desired value, which will result in the frequent switching of the SV on–off statuses that should be avoided to expand its lifespan and to save energy if the adjustment action is applied. In addition, since the over‐charging and over‐discharging phenomena will occur during height adjustment, 18 that is, the vehicle height will continue to lift or lower for a distance after reaching the target height until the system is in equilibrium, which causes the overshoot of the vehicle height. To solve the control difficulties above, the variation ranges of the root‐mean‐square (RMS) value of the vehicle height are defined, as shown in Figure 4.…”

Section: Controller Designmentioning

confidence: 99%

“…then define the transformation relationships from continuous variables to discrete variables according to Equations ( 12)- (14). After that, the logical relationships between discrete state variables can be described as Equations ( 16) and (18). Finally, the updating equations of the discrete state variables are given by Equation (20).…”

Section: Hysdel Compilationmentioning

confidence: 99%

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Design of a vehicle height and body posture adjustment hybrid automaton of electronically controlled air suspension

Qiguo

Jiang

2021

Adaptive Control & Signal

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Summary The vehicle height and body posture adjustment of electronically controlled air suspension (ECAS) poses great challenges to hybrid control, since it involves discrete events of solenoid valve (SV) switching and dynamic evolutions of continuous variables. This article investigates in the modeling and verification of the vehicle height and body posture adjustment control system. A nonlinear mechanism model of the ECAS which considers the pneumatic characteristics of the SV is established. On the basis of mixed logical dynamical (MLD) modeling approach, a hybrid automaton describing on–off statuses transition equations of charging SV, discharging SV and four air spring SVs is established and then is compiled into the standard MLD model by using hybrid system descriptions language, realizing the coordinated control between the vehicle height and body posture by directly adjusting the SV on–off statuses. Simulation tests and bench tests are conducted and the results are presented to show how the designed hybrid automaton can be successfully applied to solve the difficulties that exist in the ECAS.

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Section: Controller Designmentioning

confidence: 99%

Section: Hysdel Compilationmentioning

confidence: 99%

Design of a vehicle height and body posture adjustment hybrid automaton of electronically controlled air suspension

Qiguo

Jiang

2021

Adaptive Control & Signal

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Robust finite-time fault-tolerant control for vehicle height and posture regulation with air suspension system subject to actuator faults, uncertainties and external disturbance

2023

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Definition, criteria and approaches in designing suspension system with active controls

Patriawan

Irawan

Noerpamoengkas

et al. 2021

IOP Conf. Ser.: Mater. Sci. Eng.

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Comfort and good handling are always a problem in conventional passive suspension systems. The ideal suspension criterion is to have a short time response, have a small amplitude and eliminate the frequency of causes of motion sickness. The system is only obtained with an active suspension system. The active suspension has an actuator that is able to produce a force to reduce the dynamic force of the vehicle. This actuator will be controlled by a PID active control. The test results showed that the active control was able to reduce the amplitude by 18 mm, passes the Sickness motion frequency and can return to the set point in 0.8 seconds.

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Dynamic modeling and adjustable damping layered control of air suspension hybrid system

Cited by 4 publications

References 14 publications

Design of a vehicle height and body posture adjustment hybrid automaton of electronically controlled air suspension

Design of a vehicle height and body posture adjustment hybrid automaton of electronically controlled air suspension

Robust finite-time fault-tolerant control for vehicle height and posture regulation with air suspension system subject to actuator faults, uncertainties and external disturbance

Definition, criteria and approaches in designing suspension system with active controls

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