Ralf Keimer

About

Ralf Keimer is a robotics and automation researcher whose work spans two distinct but complementary domains: advanced parallel robot systems and composite manufacturing quality assurance. He is perhaps best known for his highly cited 2015 review on defect avoidance in automated carbon fiber reinforced polymer (CFRP) production, which has garnered 67 citations and reflects his engagement with cutting-edge industrial manufacturing challenges. The core of Keimer's earlier research focused on parallel kinematics robots, where he made sustained contributions to vibration suppression through smart-structures and adaptronic technologies. Recognizing that lightweight parallel robots — while dynamically superior — are inherently prone to structural vibrations, he developed and refined robust control strategies, including gain-scheduling and automated controller synthesis, to actively mitigate these disturbances. Works such as "Applied Robust Control for Vibration Suppression in Parallel Robots" (2005) and "Smart-Structures Technology for Parallel Robots" (2011) underscore his decade-long commitment to this challenge. Keimer also advanced the hardware side of parallel robotics, designing adaptronic revolute joints capable of simultaneous clearance adjustment — a practical innovation addressing well-known mechanical limitations. Collectively, his body of work bridges theoretical control design and real-world automation engineering, making him a valuable reference for researchers working at the intersection of robotics, structural dynamics, and advanced manufacturing.

Research Focus

Key Achievements

Top Papers

1. 1
   Avoiding defects in manufacturing processes: A review for automated CFRP production

   67 citations · 2015
2. 2
   Applied Robust Control for Vibration Suppression in Parallel Robots

   17 citations · 2005
3. 3
   Parallel Robots with Adaptronic Components

   16 citations · 2004
4. 4
   Robust gain-scheduling for smart-structures in parallel robots

   15 citations · 2009
5. 5
   Smart-Structures Technology for Parallel Robots

   13 citations · 2011
6. 6
   High-speed parallel robots with integrated vibration suppression for handling and assembly

   9 citations · 2004
7. 7
   Robust Control for Vibration Suppression on Parallel Robot TRIGLIDE

   8 citations · 2006
8. 8
   Adaptronic Revolute Joints for Parallel Robots Based on Simultaneous Quasi-Statical Axial and Radial Clearance Adjustment

   8 citations · 2008
9. 9
   Design and Implementation of Adaptronic Robot Components

   8 citations · 2010
10. 10
    Automated Synthesis of Robust Controllers for Smart-Structure Applications in Parallel Robots

    7 citations · 2007

Key Collaborators

Contact & Links