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Full-Text Articles in Social and Behavioral Sciences
A Disturbance Observer-Based Robust Controller Design For Systems With Right Half Plane Zeros And Poles, Emre Sariyildiz, Ilhan Mutlu, Rahim Mutlu
A Disturbance Observer-Based Robust Controller Design For Systems With Right Half Plane Zeros And Poles, Emre Sariyildiz, Ilhan Mutlu, Rahim Mutlu
Faculty of Engineering and Information Sciences - Papers: Part B
This paper analytically derives the bandwidth limitations of Disturbance Observer (DOB) when plants have Right Half Plane (RHP) zero(s) and pole(s). If the plant is non-minimum phase, then the bandwidth of DOB should be set at a lower value than its upper bound to improve the robust stability and performance. If the plant is unstable, then the bandwidth of DOB should be set at a higher value than its lower bound to achieve the robust stability. The upper and lower bounds are analytically derived by using Poisson integral formula. It is shown that the bandwidth limitation of DOB is directly …
Getting The Temperature Just Right Helps People With Dementia Stay Cool, Paul Cooper, Federico Tartarini, Richard Fleming
Getting The Temperature Just Right Helps People With Dementia Stay Cool, Paul Cooper, Federico Tartarini, Richard Fleming
Faculty of Engineering and Information Sciences - Papers: Part B
Everyone knows how bad it feels when the temperature is uncomfortably hot or cold. For most of us it doesn't last long as we can take simple steps to get comfortable, such as putting on clothes, opening a window, or switching on a heater. But what happens when you can't control the temperature where you live? This problem is faced by many residents of aged care facilities, and can be particularly difficult for those living with dementia. To find out how these residents cope we recently carried out a three-year research project on the effects of indoor environment in aged …
Chain-Die Forming, Is It A Right Forming Method To Make Structural Parts Of Motor Vehicles With Uhss Material, Shichao Ding, Yuankun Zhang
Chain-Die Forming, Is It A Right Forming Method To Make Structural Parts Of Motor Vehicles With Uhss Material, Shichao Ding, Yuankun Zhang
Faculty of Engineering and Information Sciences - Papers: Part A
Reducing the body weight of a motor vehicle is one of the most important research approaches in car manufacturing and steel making industries in order to reduce the pollution caused by motor vehicles. In this approach, ultra-high strength steel (UHSS) is developed by steel makers and has been applied more and more to motor vehicles. The UHSS materials have the required strength, but more or less the material's ductility is sacrificed to achieve this target. High strength materials are difficult to form using conventional forming methods. Forming high strength materials to parts effectively and economically is a high priority. Chain-die …
Product Systems Over Right-Angled Artin Semigroups, Neal J. Fowler, Aidan Sims
Product Systems Over Right-Angled Artin Semigroups, Neal J. Fowler, Aidan Sims
Faculty of Engineering and Information Sciences - Papers: Part A
We build upon MacLane's definition of a tensor category to introduce the concept of a product system that takes values in a tensor groupoid G. We show that the existing notions of product systems fit into our categorical framework, as do the k-graphs of Kumjian and Pask. We then specialize to product systems over right-angled Artin semigroups; these are semigroups that interpolate between free semigroups and free abelian semigroups. For such a semigroup we characterize all product systems which take values in a given tensor groupoid G. In particular, we obtain necessary and sufficient conditions under which a collection of …