HIL simulation of WSP systems on MI-6 test rig

Pugi, Luca; Malvezzi, Monica; Tarasconi, A.; Palazzolo, A; Cocci, Giacomo; Violani, M.

doi:10.1080/00423110600886937

Cited by 56 publications

(50 citation statements)

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“…The maximum values of the roller angular velocity ω w = 200 rad/s and roller motor torque C sc S = 20, 000/φ C N m have been derived from practical considerations on the operative conditions of the considered devices, derived from some previous analysis conducted on a full-scale test rig and described in [10]. The first value derives from the maximum linear velocity to be simulated, while the second one was derived from the maximum torque of the motors of the full scale roller rig described in [3].…”

Section: Mdm Roller Rig: Multi-body Modelmentioning

confidence: 99%

“…HIL testing may be performed considering different levels of integration of the tested system with the surrounding vehicle as in the example of Firenze Romito MI-6 test rig [3]. More recently, in the research Centre of Firenze Osmannoro, Trenitalia has built an innovative full-scale roller rig in which it is also possible to simulate degraded adhesion conditions in railway vehicle according to a control scheme previously described in [4].…”

Section: Introductionmentioning

confidence: 99%

“…Hardware in the Loop (HIL) testing of degraded adhesion conditions is an important tool for development and calibration of safety relevant on board subsystems like traction controls [1,2], odometry algorithms, WSP (wheel slide protection systems) [3]. HIL testing may be performed considering different levels of integration of the tested system with the surrounding vehicle as in the example of Firenze Romito MI-6 test rig [3].…”

Section: Introductionmentioning

confidence: 99%

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A numerical model of a HIL scaled roller rig for simulation of wheel–rail degraded adhesion condition

Conti

Meli

Pugi

et al. 2012

Vehicle System Dynamics

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PLEASE SCROLL DOWN FOR ARTICLEFull terms and conditions of use: http://www.tandfonline.com/page/terms-andconditions This article may be used for research, teaching, and private study purposes. Any substantial or systematic reproduction, redistribution, reselling, loan, sub-licensing, systematic supply, or distribution in any form to anyone is expressly forbidden.The publisher does not give any warranty express or implied or make any representation that the contents will be complete or accurate or up to date. The accuracy of any instructions, formulae, and drug doses should be independently verified with primary sources. The publisher shall not be liable for any loss, actions, claims, proceedings, demand, or costs or damages whatsoever or howsoever caused arising directly or indirectly in connection with or arising out of the use of this material. Scaled roller rigs used for railway applications play a fundamental role in the development of new technologies and new devices, combining the hardware in the loop (HIL) benefits with the reduction of the economic investments. The main problem of the scaled roller rig with respect to the full scale ones is the improved complexity due to the scaling factors. For this reason, before building the test rig, the development of a software model of the HIL system can be useful to analyse the system behaviour in different operative conditions. One has to consider the multi-body behaviour of the scaled roller rig, the controller and the model of the virtual vehicle, whose dynamics has to be reproduced on the rig. The main purpose of this work is the development of a complete model that satisfies the previous requirements and in particular the performance analysis of the controller and of the dynamical behaviour of the scaled roller rig when some disturbances are simulated with low adhesion conditions. Since the scaled roller rig will be used to simulate degraded adhesion conditions, accurate and realistic wheel-roller contact model also has to be included in the model. The contact model consists of two parts: the contact point detection and the adhesion model. The first part is based on a numerical method described in some previous studies for the wheel-rail case and modified to simulate the three-dimensional contact between revolute surfaces (wheel-roller). The second part consists in the evaluation of the contact forces by means of the Hertz theory for the normal problem and the Kalker theory for the tangential problem. Some numerical tests were performed, in particular low adhesion conditions were simulated, and bogie hunting and dynamical imbalance of the wheelsets were introduced. The tests were devoted to verify the robustness of control system with respect to some of the more frequent disturbances that may influence the roller rig dynamics. In particular we verified that the wheelset imbalance could significantly influence system performance, and to reduce the effect of this disturbance a multistate filter was designed.

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Section: Mdm Roller Rig: Multi-body Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A numerical model of a HIL scaled roller rig for simulation of wheel–rail degraded adhesion condition

Conti

Meli

Pugi

et al. 2012

Vehicle System Dynamics

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“…For low adhesion tests that are usually performed on straight lines, these kinds of results/measurements of the total X force are valuable. In particular, degraded adhesion tests are often performed to verify performances of Wheel Slide Protection (WSP) systems installed on passenger coaches [11].…”

Section: Uncertainty Analysis Of Longitudinal Force Measurementmentioning

confidence: 99%

An integrated approach for the optimization of wheel–rail contact force measurement systems

et al. 2013

Self Cite

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A comprehension of railway dynamic behavior implies the measure of wheel-rail contact forces which are affected by disturbances and errors that are often difficult to be quantified. In this study, a benchmark test case is proposed, and a bogie with a layout used on some European locomotives such as SIEMENS E190 is studied. In this layout, an additional shaft on which brake disks are installed is used to transmit the braking torque to the wheelset through a single-stage gearbox. Using a mixed approach based on finite element techniques and statistical considerations, it is possible to evaluate an optimal layout for strain gauge positioning and to optimize the measurement system to diminish the effects of noise and disturbance. We also conducted preliminary evaluations on the precision and frequency response of the proposed system.

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“…In the mentioned controller, upper and lower bounds are set for the velocities and the accelerations of the wheel sets. Also in Pugi et al (2006), Hardware In the Loop (HIL) testing of WSPD has been done using MI-6 test rig that is manufactured by Trenitalia and University of Florence. HIL model is able to generate the dynamical behaviour of the simulated train according to the main features of the mechanical and electrical subsystems.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Fuzzy Sliding-Mode Control of Wheel Slide Protection Device for ER24PC Locomotive

Mousavi

Markazi

Masoudi

2017

Lat. Am. j. solids struct.

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Wheel Slide Protection Devices (WSPD) are employed in railway vehicles to maximize the average of the possible frictional braking force, which is a nonlinear function of the slip ratio of the wheel sets. In this paper, to control the WSPD, a low-order model is presented and un-modeled dynamics are considered as uncertainties. Due to the nonlinear dynamics of the system and presence of uncertainties, Adaptive Fuzzy Sliding-Mode Control (AFSMC) is employed to regulate the slip ratio towards the desired value. The proposed controller employs a Pulse Width Modulation (PWM) technique to generate the braking torque. The second Lyapunov theorem is used to prove the closed-loop asymptotic stability. In the simulations, the switching dynamics of WSPD is considered and the multi-body dynamics method is used for modeling the longitudinal dynamics of ER24PC locomotive. The obtained results reveal that by using the AFSMC method, the slip ratios of wheel sets converge to the reference values. Unlike the conventional method, in which the fluctuations of slip ratio diverge near the stopping time, simulation studies reveal that with the AFSMC method, the stopping time of the locomotive and the fluctuation amplitude of the slip ratios are reduced.

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HIL simulation of WSP systems on MI-6 test rig

Cited by 56 publications

References 1 publication

A numerical model of a HIL scaled roller rig for simulation of wheel–rail degraded adhesion condition

A numerical model of a HIL scaled roller rig for simulation of wheel–rail degraded adhesion condition

An integrated approach for the optimization of wheel–rail contact force measurement systems

Adaptive Fuzzy Sliding-Mode Control of Wheel Slide Protection Device for ER24PC Locomotive

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