Johann W. Kolar
Papers
9
Total Citations
96
H-Index
6
About
Johann W. Kolar is a prominent researcher whose work spans precision electromechanical actuators, power electronics, and contactless manipulation technologies. His most significant contributions center on linear-rotary actuators (LiRAs) and self-bearing linear systems, where he has systematically advanced the theoretical foundations and practical design of direct-drive machines capable of simultaneous linear and rotational motion — eliminating the need for mechanical gearboxes and enabling cleaner, higher-precision operation in robotics, pick-and-place systems, and industrial automation. Kolar's comparative evaluations and novel actuator topologies, including double-stator configurations and self-bearing designs with integrated magnetic bearings, have provided engineers with rigorous frameworks for selecting and optimizing these systems. His work on acoustic levitation-based grippers opens exciting frontiers in contamination-free object manipulation, particularly relevant to pharmaceutical and semiconductor manufacturing. On the power electronics side, his hybrid LLC converter design addresses the demanding efficiency requirements of electric vehicles and data centers across wide input voltage ranges. With his most-cited work accumulating 25 citations and a portfolio spanning experimental validation, dynamic modeling, and controller design, Kolar's research consistently bridges elegant theoretical analysis with real-world engineering impact — making his body of work essential reading for students and practitioners in advanced mechatronics and power conversion.
Research Focus
Key Achievements
Top Papers
- 1Contactless Picking of Objects Using an Acoustic Gripper25 citations · 2021
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- 6Double Stator Linear-Rotary Actuator with a Single Set of Mover Magnets6 citations · 2018
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- 9Novel tubular linear actuator with integrated magnetic bearing2 citations · 2022