Kazi Sher Ahmed

Mechatronics Researcher

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I work with magnetic levitation, control systems, and rotordynamics, building rotating machinery, embedded controllers, and open-source computational tools for modeling, optimization, and validation.

My recent work at Sabanci University proposed systematic design frameworks for spindles and manufactured an active magnetic bearing (AMB) micro-milling spindle.

Previously, I worked at GIK Institute where I developed and benchmarked an open-source finite-element rotordynamic code VibronRotor for flexible rotor-bearing systems.

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News

Apr 2026 Open-sourced DC Motor Control Test Rig: A low-cost rig benchmarking PI, pole-placement, LQR, and observer-based (Luenberger / Kalman–LQG) control on a geared DC motor
Feb 2026 Our preprint “Design Framework and Manufacturing of an Active Magnetic Bearing Spindle for Micro-Milling Applications” is up on arXiv
Apr 2025 Our paper “Integrated Design Optimization of a Motorized Active Magnetic Bearing Spindle for Micro-Milling Applications” has been published in the Journal of Mechanical Science and Technology
Aug 2022 Presented our work “Design of an Active Magnetic Bearing Spindle for Micro-Milling Applications” at the 19th International Conference on Machine Design and Production, Turkiye
Jul 2021 Completed my MS in Mechatronics Engineering at Sabanci University, with a thesis on the design of active magnetic bearing spindles for micro-milling
Jan 2019 Our paper “VibronRotor, an open-source rotordynamic code: Development and benchmarking” was published in Measurement
Mar 2018 Released VibronRotor: An open-source finite-element rotordynamic code for flexible rotor-bearing systems

Publications & Preprints

  1. spindle_scaled.jpg
    Design Framework and Manufacturing of an Active Magnetic Bearing Spindle for Micro-Milling Applications
    K S Ahmed and B Bediz
    arXiv preprint, 2026
    PDF
  2. Figure_1.jpg
    Integrated Design Optimization of a Motorized Active Magnetic Bearing Spindle for Micro-Milling Applications
    K S Ahmed, G K Sendur, and B Bediz
    Journal of Mechanical Science and Technology, 2025
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  3. vibronrotor.jpg
    VibronRotor, an Opensource Rotordynamic Code: Development and Benchmarking
    K S Ahmed and S M Ahmad
    Measurement, 2019
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  4. conf.jpg
    Design of an Active Magnetic Bearing Spindle for Micro-Milling Applications
    K S Ahmed and B Bediz
    In 19th International Conference on Machine Design and Production, 2022
    PDF
  5. undergradconf.jpg
    Finite Element Modelling of a Generic Rotor-Bearing System and Experimental Validation
    A Rehman, K S Ahmed, F A Umrani, and 4 more authors
    In Dynamic Systems and Control Conference, 2015
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