Prof TX Mei's Outputs (18)

Control of Independently Rotating Wheels with MR Dampers (2024)
Presentation / Conference Contribution

This paper studies the control of independently rotating wheels (IRWs) in railway vehicles with the use of magnetorheological dampers. The development of a semi-active strategy for steering/guidance control is presented. A conventional bogie vehicle... Read More about Control of Independently Rotating Wheels with MR Dampers.

Semi-Active Control of Independently Rotating Wheels in Railway Vehicles (2024)
Journal Article
Mei, T., Li, H., Zaeim, A., & Dai, H. (2024). Semi-Active Control of Independently Rotating Wheels in Railway Vehicles. Vehicle System Dynamics, 62(10), 2686-2702. https://doi.org/10.1080/00423114.2023.2300278

This paper presents an in-depth analysis of steering and guidance problems of independently rotating wheels (IRWs) in railway vehicles and provides an engineering insight of the possibilities for passive and/or semi-active control possibilities that... Read More about Semi-Active Control of Independently Rotating Wheels in Railway Vehicles.

Semi-active control for independently rotating wheelset in railway vehicles with MR dampers (2021)
Thesis
Zaeim, A. Semi-active control for independently rotating wheelset in railway vehicles with MR dampers. (Thesis). University of Salford

This thesis presents details of an investigation of a controller for MR damper in the implementation of semi-active control, for primary suspensions of the independently rotating railway vehicles.
This research focuses on using MR damper and it add... Read More about Semi-active control for independently rotating wheelset in railway vehicles with MR dampers.

Application of state estimators in active control of railway wheelsets (2019)
Presentation / Conference Contribution

This paper presents the development of a state observer for the estimation of output torque of an electromechanical actuator in the application of active wheelset control for railway vehicles. The output from the state estimator is essential to ensur... Read More about Application of state estimators in active control of railway wheelsets.

Control of railway wheelsets – A semi-active approach (2019)
Presentation / Conference Contribution

This paper presents a detailed study of semi-active approach for railway wheelsets. A number of control strategies for active primary suspensions for both solid axle wheelset and independently rotating wheelsets are examined in detail and the key req... Read More about Control of railway wheelsets – A semi-active approach.

Rotor-position detection in permanent-magnet wheel motor to ensure smooth startup from standstill (2019)
Journal Article
Qu, K., Li, W., Xu, G., Mei, T., Cao, J., Zhang, Y., & Hu, H. (2019). Rotor-position detection in permanent-magnet wheel motor to ensure smooth startup from standstill. IEEE Access, 7, 54179-54191. https://doi.org/10.1109/ACCESS.2019.2912445

In this paper, an innovative rotor-position-detection method for a permanent-magnet wheel motor (PMWM) that operates from standstill to low speed is presented. The neutral voltage, which is sensed through phaseshifted pulse width modulation, overcome... Read More about Rotor-position detection in permanent-magnet wheel motor to ensure smooth startup from standstill.

Robust control and actuator dynamics compensation for railway vehicles (2016)
Journal Article
Bideleh, S., Mei, T., & Berbyuk, V. (2016). Robust control and actuator dynamics compensation for railway vehicles. Vehicle System Dynamics, 54(12), 1762-1784. https://doi.org/10.1080/00423114.2016.1234627

A robust controller is designed for active steering of a high speed train bogie with solid axle wheel sets to reduce track irregularity effects on the vehicle’s dynamics and improve stability and curving performance. A half-car railway vehicle model... Read More about Robust control and actuator dynamics compensation for railway vehicles.

Design and optimisation of wheel-rail profiles for adhesion improvement (2016)
Journal Article
Liu, B., Mei, T., & Bruni, S. (2016). Design and optimisation of wheel-rail profiles for adhesion improvement. Vehicle System Dynamics, 54(3), 429-444. https://doi.org/10.1080/00423114.2015.1137958

This paper describes a study for the optimisation of the wheel profile in wheel-rail system to increase the overall level of adhesion available at the contact interface, in particular to investigate how the wheel and rail profile combination may be d... Read More about Design and optimisation of wheel-rail profiles for adhesion improvement.

An analytical design approach for self-powered active lateral secondary suspensions for railway vehicles (2015)
Journal Article
Wang, P., Li, H., Zhang, J., & Mei, T. (2015). An analytical design approach for self-powered active lateral secondary suspensions for railway vehicles. Vehicle System Dynamics, 53(10), 1439-1454. https://doi.org/10.1080/00423114.2015.1050964

In this paper, an analytical design approach for the development of self-powered active suspensions is investigated and is applied to optimise the control system design for an active lateral secondary suspension for railway vehicles. The conditions f... Read More about An analytical design approach for self-powered active lateral secondary suspensions for railway vehicles.

Self-powered active lateral suspension for railway vehicles (2015)
Journal Article
Wang, P., Mei, T., Zhang, J., & Li, H. (2016). Self-powered active lateral suspension for railway vehicles. IEEE Transactions on Vehicular Technology, 65(3), 1121-1129. https://doi.org/10.1109/TVT.2015.2407575

This paper presents a design methodology for the development of self-powered active lateral secondary suspensions for rail vehicles. It firstly investigates the energy flows in the active lateral secondary suspensions and analyzes the conditions for... Read More about Self-powered active lateral suspension for railway vehicles.

Control of wheel motors for the provision of traction and steering of railway vehicles (2014)
Journal Article

This study presents the development of a control system for permanent magnet motors embedded in railway wheels for integrated traction and steering of rail vehicles. The overall control scheme and the control strategies for the provision of traction... Read More about Control of wheel motors for the provision of traction and steering of railway vehicles.

Detection and isolation for actuator failure for actively controlled railway wheelsets (2014)
Presentation / Conference
Mirzapour, M., & Mei, T. (2014, July). Detection and isolation for actuator failure for actively controlled railway wheelsets. Presented at UKACC International Control Conference 2014, Loughborough

This paper studies a model-based approach for the condition monitoring of an actively controlled railway system, with a focus on actuator failures to detect and isolate failure modes in such a system. It seeks to establish the necessary basis for fau... Read More about Detection and isolation for actuator failure for actively controlled railway wheelsets.

Towards self-powered lateral active suspension for railway vehicles (2014)
Presentation / Conference
Wang, P., Mei, T., & Zhang, J. (2014, July). Towards self-powered lateral active suspension for railway vehicles. Presented at UKACC International Control Conference 2014, Loughborough

This paper investigates the energy consumption of the lateral secondary active suspension for railway vehicles and studies the conditions for self-powered active suspension control. The influence of the performance index weighting factors to both the... Read More about Towards self-powered lateral active suspension for railway vehicles.

Railway vehicle optimisation to using the concept of design for control (2014)
Presentation / Conference
Ward, C., Mei, T., Hubbard, P. D., & Mirzapour, M. (2014, April). Railway vehicle optimisation to using the concept of design for control. Presented at The Second International Conference on Railway Technology: Research, Development and Maintenance ,, Ajaccio

Design for control is an axiom extensively used in the aerospace and automotive industries that has proven highly beneficial both in terms of performance benefits but also in reducing unit costs and reducing maintenance burdens. To date, in the railw... Read More about Railway vehicle optimisation to using the concept of design for control.

Fault detection and isolation for an active wheelset control system (2014)
Journal Article
Mirzapour, M., Mei, T., & Xuesong, J. (2014). Fault detection and isolation for an active wheelset control system. Vehicle System Dynamics, 52(Sup_1), 157-171. https://doi.org/10.1080/00423114.2014.887210

Active control for railway wheelsets in the primary suspension has been shown to offer a number of performance gains, and especially it can be used to stabilise the wheelsets without compromising the vehicle's performance on curves. However, the use... Read More about Fault detection and isolation for an active wheelset control system.

Real-time modeling of wheel-rail contact laws with system-on-chip (2010)
Journal Article
Zhou, Y., Mei, T., & Freear, S. (2010). Real-time modeling of wheel-rail contact laws with system-on-chip. IEEE Transactions on Parallel and Distributed Systems, 21(5), 672-684. https://doi.org/10.1109/TPDS.2009.107

This paper presents the development and implementation of a multiprocessor system-on-chip solution for fast and real-time
simulations of complex and nonlinear wheel-rail contact mechanics. There are two main significances in this paper. First, the w... Read More about Real-time modeling of wheel-rail contact laws with system-on-chip.

Fault tolerant strategy of actuator failure for actively controlled railway wheelsets
Presentation / Conference
Mirzapour, M., Mei, T., & Li, H. Fault tolerant strategy of actuator failure for actively controlled railway wheelsets. Presented at 2014 UKACC International Conference on Control, Loughborough University

This paper presents the development of a fault-tolerant scheme through an analytical redundancy approach for actively controlled railway wheelsets. The main aim of the study is to maintain the basic control of the rail vehicles in the event of actuat... Read More about Fault tolerant strategy of actuator failure for actively controlled railway wheelsets.

Improvement of semi-active control suspensions based on gain-scheduling control
Thesis
Hammood, H. (in press). Improvement of semi-active control suspensions based on gain-scheduling control. (Thesis). University of Salford

This study presents the development of a non-linear control strategy for a semi-active suspension controller using a gain-scheduling structure controller. The aim of the study is to overcome the constraints of conventional control strategies and impr... Read More about Improvement of semi-active control suspensions based on gain-scheduling control.