Entity

Time filter

Source Type

Chester-le-Street, United Kingdom

Wang J.,University of Birmingham | Yang L.,Ford Motor Company | Luo X.,University of Birmingham | Mangan S.,Energetix Group Plc | Derby J.W.,Energetix Group Plc
IEEE/ASME Transactions on Mechatronics | Year: 2011

A scroll air motor, also known as a scroll expander, is a relatively new concept to pneumatic actuators. Its unique structure leads to its feature of high ability in energy conversion. In recent years, scroll air motors have been adopted by combined heat and power boilers, uninterrupted power supplies, and some other energy storage systems as a new mechatronic device for energy conversion. The paper aims to present the work in developing a complete mathematical model of the scroll air motor for analysis of scroll energy efficiency and the factors affecting energy efficiency. The work will be reported in two parts of the paper. The paper describes the derivation of spiral equations, chamber volume calculations, and the driving torque of the scroll air motor. The dynamic process modeling and energy efficiency analysis will be presented in Part II of the paper. © 2006 IEEE. Source


Luo X.,University of Warwick | Wang J.,University of Warwick | Sun H.,University of Birmingham | Derby J.W.,Energetix Group Plc | Mangan S.J.,Energetix Group Plc
IEEE/ASME Transactions on Mechatronics | Year: 2013

Although pneumatic actuators have been widely used in industry and other application areas, its weakness in low-energy efficiency is well known. Aiming for energy efficiency improvement, this paper presents a new hybrid pneumatic system that will recover energy from the exhaust compressed air through a scroll expander. The scroll expander drives a generator to convert the exhaust compressed air energy to electrical energy; thus, the proposed system is entitled 'pneumatic-electrical' system. A closed-loop coordinate control strategy is engaged and proven to be essential in maintaining proper actuator operation status, while the scroll expander is connected in. The overall system mathematical model is derived and simulation results are presented in this paper. A test rig is set up to verify the feasibility of the proposed system structure. Both simulation and test results indicate that the proposed scheme is realistic and work well. © 1996-2012 IEEE. Source


Wang J.,University of Birmingham | Luo X.,University of Birmingham | Yang L.,Ford Motor Company | Shpanin L.M.,University of Birmingham | And 3 more authors.
IEEE/ASME Transactions on Mechatronics | Year: 2011

A scroll air motor, also known as a scroll expander, is a relatively new concept to pneumatic actuators. In recent years, scroll air motors have been adopted by combined heat and power boilers, uninterrupted power supply, and some other energy storage systems as a new mechatronic device for energy conversion. The paper aims to develop a complete mathematical model of the scroll air motor for dynamic characteristic and energy efficiency analysis. In Part I of the paper, the geometry description of the scroll air motor is presented and the scroll driving torque is derived. In this, Part II, the mathematical model for the scroll dynamic process is described and verified by comparing the simulated and measured results. Then, the initial analysis of scroll energy efficiency is given, which explains the scrolls high ability in energy conversion. © 2006 IEEE. Source

Discover hidden collaborations