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Large control signal derivatives or inter-sample differences may harm actuators. An optimization constraint limiting such variations, related to measurement noise, is derived. Using the constraint, optimal PI, PID and measurement filters with different orders are designed for several processes and compared to the optimal linear controller of high order found via Youla parametrization. Simulations
This article examines the validity of international reports and policy analyses on Uzbekistan, and possibly on other Central Asian countries, regarding informal economic practices as a social evil that undermines the legitimacy and efficiency of public policies. The research presented is based on three periods of fieldwork between 2009 and 2012 in rural Fergana, Uzbekistan, and uses the case of ma
A passive system is one that cannot produce energy, a property that naturally poses constraints on the system. A system on convolution form is fully described by its transfer function, and the class of Herglotz functions, holomorphic functions mapping the open upper half plane to the closed upper half plane, is closely related to the transfer functions of passive systems. Following a well-known re
A tool for synthesis of control units in application-specific digital signal processors is presented. Synthesis of a control unit is based on micro instructions generated for each processor module and includes no use of predefined functional blocks. Complexity and partitioning of the controller are dependent on the structure of the micro program. The control unit synthesizer has been developed for
The AREE house was built in 2007/2008 to provide a showcase of a high performance building in Aqaba city in the southern part of Jordan. The total energy performance of the building was achieved through three types of measures grouped into passive design elements, material choices and renewable energy installations. The energy performance and associated costs and benefits for each type were modell
Discontinuity preserving interpolation methods are often desirable in image reconstruction from sparse visual data. Two such schemes are constructed by interpreting the image as the potentialcause by some distribution of charges, and then detecting certain patterns (notably dipole curves) among the charges. Experiments have been performed on an ink-jet plotter, showing good performance.
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