Blar i NTNU Open på forfatter "Bukhari, Halima Zahra"
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Adaptive Nonlinear Control of the Czochralski Process Via Integration of Second Order Sliding Mode and Iterative Learning Control
Bukhari, Halima Zahra; Aftab, Muhammad Faisal; Hovd, Morten; Winkler, Jan (Chapter, 2017)This paper utilises nonlinear second-order sliding mode (SOSM) combined with an iterative learning control (ILC) scheme for the control of interface dynamics primarily focused on diameter control in the Czochralski (CZ) ... -
Limitations on control performance in the Czochralski crystal growth process using bright ring measurement as a controlled variable
Bukhari, Halima Zahra; Hovd, Morten; Winkler, Jan (Journal article; Peer reviewed, 2019)This paper develops a dynamical model for crystal diameter in the Czochralski process for production of monocrystalline silicon. The model combines simplified crystal growth dynamics with rigorous ray tracing to describe ... -
Modeling and Control of the Czochralski Crystal Growth Process
Bukhari, Halima Zahra (Doctoral theses at NTNU;2021:269, Doctoral thesis, 2021)This thesis provides the basis for improved control of the Czochralski (Cz) process – a process used on a commercial scale to produce monocrystalline silicon (Si) ingots. This is done by developing a model for the crystal ...