{"id":490,"date":"2018-05-01T10:46:22","date_gmt":"2018-05-01T09:46:22","guid":{"rendered":"http:\/\/www.mub.eps.manchester.ac.uk\/eee\/?p=490"},"modified":"2018-05-01T16:43:09","modified_gmt":"2018-05-01T15:43:09","slug":"meet-a-eee-tutor-prof-william-heath","status":"publish","type":"post","link":"https:\/\/www.mub.eps.manchester.ac.uk\/eee\/2018\/05\/01\/meet-a-eee-tutor-prof-william-heath\/","title":{"rendered":"Meet a EEE Tutor – Prof William Heath"},"content":{"rendered":"

Prof William Heath is the Director of Teaching and Learning and also teaches on the third year\u00a0Numerical Analysis unit which is an optional\u00a0unit in all three undergraduate courses in our School. <\/em><\/p>\n

 <\/p>\n

Please can you describe your research, for the layman, in ten sentences or less?<\/h3>\n

I am a control engineer so my area is the analysis, design and implementation of feedback control systems. That is to say I make things work. For example, one application I work on is the control of nanopositioners: these are ultra precise stages used to mount and move samples in experimental microscopy.\u00a0\u00a0The control task is to achieve high precision on-the-fly in the face of some challenging device physics.\u00a0 In particular the devices themselves are highly resonant and are driven by piezoelectric actuators whose response includes hysteresis.\u00a0\u00a0 In fact a focus of my work is working on systems with such actuator nonlinearities.\u00a0 All this is underpinned by some elegant mathematical theory.<\/p>\n

\"\"<\/a><\/p>\n

Queensgate nanopositioning stage<\/p>\n

<\/h3>\n

How can your research benefit the public?<\/h3>\n

Control engineering is essential for modern manufacturing. One aspect of my work that I really enjoy is the wide range of applications. I have worked on engine management, water distribution, water treatment, food production, paper making, steel making, plastic film extrusion and nuclear decommissioning.<\/p>\n

But I also believe in knowledge for its own sake. It\u2019s all about impact these days, but a university\u2019s biggest impact is in transforming young people\u2019s lives.\u00a0 I enjoy introducing students to the ideas and philosophy of control engineering. One aspect that we don\u2019t articulate well is that we study open rather than closed systems:\u00a0 we don\u2019t consider dynamic systems in isolation, but rather how they respond to possibly unknown external factors.\u00a0 This is quite different to traditional physics where, for example, the motion of the planets is viewed as a beautiful but self-contained system. The control engineer\u2019s viewpoint seems more-and-more appropriate for grand challenges such as climate change where we need to understand the possible consequences of our own actions.<\/p>\n

\"\"<\/a><\/p>\n

At a conference in Osaka<\/p>\n

 <\/p>\n

How did you first become interested in your research area?<\/h3>\n

It depends how narrowly you define my field. I was at Newcastle University in Australia for six years where I worked with some brilliant control engineers. But I sensed a growing anomaly in their approach. On the one hand I was introduced to some beautiful classical ideas (for the specialist: dissipativity, integral quadratic constraints and the input-output approach to stability). On the other, they were excited about the potential of a technique called model predictive control (which I had already implemented back in the UK) which is used in more and more applications. No one seemed to see a connection, and I\u2019ve been working on marrying the two since my return to Manchester in 2004.<\/p>\n

<\/h3>\n

Who or what first inspired your interest in Science and Engineering?<\/h3>\n

I studied mathematics as an undergraduate and wanted to apply it to something useful. I enrolled on an MSc in Systems and Control at UMIST (it obviously wasn\u2019t considered Advanced in those days) not knowing quite what to expect, and loved every minute.\u00a0 What began as a utilitarian venture quickly became a passion.<\/p>\n

I was surprised at the time by the diversity of analytic tools needed for goal-oriented tasks such as control system design. Mastering such tools is fun!\u00a0 But mostly I still find it thrilling when simple mathematics can explain some rich structure in the physical world.\u00a0 As an example, I was once given a tour of a paper mill by the parent company\u2019s Director of R&D.\u00a0 He pointed to the swirling pulp on the forming wire, and said something along the lines of \u201cJust imagine the curl on that!\u00a0 This process is highly nonlinear and almost surely chaotic.\u00a0 You\u2019ll need neural networks if you\u2019re going to crack it.\u201d\u00a0 Yet it turned out the phenomenon we were discussing could be explained (and controlled) using only simple linear algebra.<\/p>\n

 <\/p>\n

Can you tell us a little about your other interests?<\/h3>\n

Every Director of Teaching and Learning will tell you how busy they are. Combine that with research, teaching and family and there\u2019s not much left for other interests. It would be easier to list the things I\u2019ve put aside, such as playing in an Australian brass band or standing on the terraces at Turf Moor.\u00a0 Still, occasionally I manage to mix a little bit of business and pleasure.<\/p>\n

 <\/p>\n

\"\"<\/a><\/p>\n

Mixing business with pleasure<\/p>\n

 <\/p>\n

What do you get up to in your spare time?<\/h3>\n

Actually I do find time to get out on a bicycle. We live on the edge of the Peak District, and when it\u2019s not raining the hills are inspiring.\u00a0 Most weekends, whatever the weather, I try at least to get up and down Long Hill – I\u2019m not very fast, but I did once overtake Mark Cavendish at the top (that he was off his bike taking a leak is surely insignificant detail).<\/p>\n

 <\/p>\n

\"\"<\/a><\/p>\n

Mark Cavendish was overtaken here<\/p>\n

<\/h3>\n

How does being based here in Manchester help your work and research?<\/h3>\n

Manchester has always been a focus for my discipline. The \u201cBritish School\u201d was originally the \u201cManchester School\u201d after Howard Rosenbrock and Alistair MacFarlane founded the Control Systems Centre at UMIST in the 60s. I was lucky enough to be supervised by Peter Wellstead for my PhD. He is less well known, but hugely loved and respected by those who worked with him. The preface to a recent book describes Peter as \u201cone of the best control engineers and professors I ever met\u201d.<\/p>\n

Now I am surrounded by talented staff and students, both within the discipline and in other areas. There are huge opportunities to work with colleagues from other Schools, and my current collaborations include with MIB (Manchester Institute of Biotechnology), MACE (School of Mechanical, Aerospace and Civil Engineering) and CEAS (School of Chemical Engineering and Analytical Science).<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

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