英国巴斯大学Dr. Nigel Johnston 学术报告

摘要：The centre for Power Transmission and Motion Control (PTMC) at the University of Bath was formerly known as the Fluid Power Centre and has been active in research into hydraulics for about 40 years, as well as other related areas such as control, electric drives, active magnetic bearings and fuel systems. An overview of some of the areas of research in the PTMC and in the Department of Mechanical Engineering at Bath will be given.

 

A current area of research is efficient fluid power, particularly digital hydraulics. A technique using fast-switching valves and an ‘inertance tube’ will be presented. This allows control of flow and pressure with potentially a much higher efficiency than conventional throttling valves, using a pulse-width modulation technique. The design and performance of two types of fast-switching valves will be explored.

 

Dr. Nigel Johnston简介：Dr.Nigel Johnston is a senior lecturer in the Department of Mechanical Engineering at University of Bath.He has over 25 years’ experience in hydraulic fluid power research and teaching. He studied the measurement and prediction of pressure ripple in hydraulic systems for his PhD. This work has since been used as the basis for an ISO Standard for the measurement of pump pressure ripple characteristics. He specialises in the areas of fluid-borne noise measurement and reduction in hydraulic fluid power systems, active noise control, numerical modelling of hydraulic components, unsteady turbulent flow, pipeline and hose dynamics.Dr. Nigel Johnston regularly teaches on industrial fluid power courses in the UK, Europe and USA. He is Organiser and joint Editor for the Bath/ASME International Fluid Power and Motion Control Symposium.