R. Bakker

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Automated signature verification is an important capability when doing fraud detection from high volumes of document images. The challenge is mainly caused by the combination of inherent writer variations and the conscious attention placed by the fraudster on imitating a legitimate signature. Getting good signature references is the first and most important(More)
Design process of Stewart platform used as Vehicle Emulator System (VES) was investigated and various aspects which affect the basic behavior of the mechanism was examined. Two additional design considerations were proposed: stiffness and admittance emulation accuracy. The analysis reveals the relationship between the performance of VES and the components(More)
Nonlinearly parameterized (NLP) systems are ubiquitous in nature and many fields of science and engineering. Despite the wide and diverse range of applications, there exist relatively few results in control systems literature which exploit the structure of the nonlinear parameterization. A vast majority of presently applicable global control design(More)
Adaptive control refers to the control of systems that have poorly known parameters but a well modeled structure. The adaptive control of linear, time-invariant systems is well understood. However, for systems with multiple inputs and multiple outputs the adaptive controller is of high order and complex making the approach inapplicable in a number of(More)
The first two years of user service of the third generation light source BESSY II emphasized the importance of a reliable , comprehensive and dense logging of a few thousand setpoints, readbacks, status and alarm values. Today data from sources with various characteristics residing in different protected networks are centrally collected and retriev-able via(More)
The BESSY II control system takes advantage of the mature stage of the EPICS toolkit and its contributed generic applications. Development activities have been focussed on three aspects. (1) Dominant role is given to device control IO, based on distributed local intelligence of embedded controllers and CAN fieldbus networks. (2) Cooperative development of(More)
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