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Articles 1 - 6 of 6
Full-Text Articles in Social and Behavioral Sciences
Fault-Tolerant Control Of Electric Vehicles With In-Wheel Motors Using Actuator-Grouping Sliding Mode Controllers, Boyuan Li, Haiping Du, Weihua Li
Fault-Tolerant Control Of Electric Vehicles With In-Wheel Motors Using Actuator-Grouping Sliding Mode Controllers, Boyuan Li, Haiping Du, Weihua Li
Faculty of Engineering and Information Sciences - Papers: Part A
Although electric vehicles with in-wheel motors have been regarded as one of the promising vehicle architectures in recent years, the probability of in-wheel motor fault is still a crucial issue due to the system complexity and large number of control actuators. In this study, a modified sliding mode control (SMC) is applied to achieve fault-tolerant control of electric vehicles with four-wheel-independent-steering (4WIS) and four-wheel-independent-driving (4WID). Unlike in traditional SMC, in this approach the steering geometry is re-arranged according to the location of faulty wheels in the modified SMC. Three SMC control laws for longitudinal velocity control, lateral velocity control and …
Online Coordinated Voltage Control In Distribution Systems Subjected To Structural Changes And Dg Availability, Dothinka Ranamuka Rallage, Ashish P. Agalgaonkar, Kashem M. Muttaqi
Online Coordinated Voltage Control In Distribution Systems Subjected To Structural Changes And Dg Availability, Dothinka Ranamuka Rallage, Ashish P. Agalgaonkar, Kashem M. Muttaqi
Faculty of Engineering and Information Sciences - Papers: Part A
The responses of multiple DG units and voltage regulating devices such as tap changers and capacitor banks for correcting the voltage may lead to operational conflicts and oscillatory transients, where distribution systems are subjected to network reconfiguration and changes in availability of the DG units. Therefore, coordinated voltage control is required to minimize control interactions while accounting for the impact of structural changes associated with the network. This paper proposes a strategy for coordinating the operation of multiple voltage regulating devices and DG units in medium voltage (MV) distribution systems, under structural changes and DG availability, for effective voltage control. …
State Of The Art Of Control Schemes For Smart Systems Featuring Magneto-Rheological Materials, Seung-Bok Choi, Weihua Li, Miao Yu, Haiping Du, Jie Fu, Phu Xuan Do
State Of The Art Of Control Schemes For Smart Systems Featuring Magneto-Rheological Materials, Seung-Bok Choi, Weihua Li, Miao Yu, Haiping Du, Jie Fu, Phu Xuan Do
Faculty of Engineering and Information Sciences - Papers: Part A
This review presents various control strategies for application systems utilizing smart magneto-rheological fluid (MRF) and magneto-rheological elastomers (MRE). It is well known that both MRF and MRE are actively studied and applied to many practical systems such as vehicle dampers. The mandatory requirements for successful applications of MRF and MRE include several factors: advanced material properties, optimal mechanisms, suitable modeling, and appropriate control schemes. Among these requirements, the use of an appropriate control scheme is a crucial factor since it is the final action stage of the application systems to achieve the desired output responses. There are numerous different control …
Stability Control Of Force-Reflected Nonlinear Multilateral Teleoperation System Under Time-Varying Delays, Da Sun, Fazel Naghdy, Haiping Du
Stability Control Of Force-Reflected Nonlinear Multilateral Teleoperation System Under Time-Varying Delays, Da Sun, Fazel Naghdy, Haiping Du
Faculty of Engineering and Information Sciences - Papers: Part A
A novel control algorithm based on the modified wave-variable controllers is proposed to achieve accurate position synchronization and reasonable force tracking of the nonlinear single-master-multiple-slave teleoperation system and simultaneously guarantee overall system's stability in the presence of large time-varying delays. The system stability in different scenarios of human and environment situations has been analyzed. The proposed method is validated through experimental work based on the 3-DOF trilateral teleoperation system consisting of three different manipulators. The experimental results clearly demonstrate the feasibility of the proposed algorithm to achieve high transparency and robust stability in nonlinear single-master-multiple-slave teleoperation system in the presence …
Development Of Intermediate Cooling Technology And Its Control For Two-Stand Plate Rolling, Fei Zhang, Wei Yu, Tao Liu
Development Of Intermediate Cooling Technology And Its Control For Two-Stand Plate Rolling, Fei Zhang, Wei Yu, Tao Liu
Faculty of Engineering and Information Sciences - Papers: Part A
In a plate rolling production line, thermomechanically controlled processing is critical for plate quality. In this paper, a set of intermediate cooling equipment of a two-stand plate mill with super density nozzles, medium pressure, and small flow is developed. Based on a simplified dynamic model, a cooling control scheme with combined feedforward, feedback, and adaptive algorithms is put forward. The new controlled rolling process and the highly efficient control system improve the controlled rolling efficiency by an average of 17.66%. The proposed intermediate cooling system can also effectively inhibit the growth of austenite grain, improve the impact toughness and yield …
Evaluation Methodology And Implementation For Natural Ventilation Control Strategies, Massimo Fiorentini, Georgios Kokogiannakis, Warwick Jackson, Zhenjun Ma, Paul Cooper
Evaluation Methodology And Implementation For Natural Ventilation Control Strategies, Massimo Fiorentini, Georgios Kokogiannakis, Warwick Jackson, Zhenjun Ma, Paul Cooper
Faculty of Engineering and Information Sciences - Papers: Part A
This paper describes a methodology for evaluating the effectiveness of various control strategies for the operation of window actuators to control the indoor climate, and their implementation in a full scale case study building. In this study, the effectiveness of a control strategy is considered in terms of the capability of the controller for maintaining the indoor thermal comfort in a prescribed variable range, and its effect on the minimisation of the operational energy consumption of the building, due to a lower thermal energy demand to be met by the heating and cooling system. A model of the case study …