Parallel robotics

Mission of the Parallel Robotics Group

Constantly higher needs in the domain of machine industry are bringing us to develop new technology, other than conventional serial robots. The parallel-kinematic machine outperform today’s common serial machine on several points like stiffness and dynamics.

The mission of the Parallel Robotics Group is to develop new dedicated parallel-kinematic machines in all their aspects, reaching from the architecture to the final calibration. The Parallel Robotics Group has a long tradition in our laboratory. It can present important successes like the DELTA robot, which was sold over 4000 times,  and the newly developped HITA STT machine-tool.

Parallel-kinematic technology can be applied in any domain where you need multiple axes and outstanding performances.

Contact: Laurent Jenni

Kinematics

/webdav/site/lsro/shared/PRD/Research_PRD.jpgThe kinematics of a mechanism define the order, placement and type of its basic elements, the joints. This very important design step will determine the number of degrees of freedom (dof) and the basic characteristics of the mechanism.

Elements

/webdav/site/lsro/shared/PRD/elements_small.jpgThe elements of a mechanism are defined by the kinematics, but their mechanical characteristics need to be raised very high by a smart design. The typical qualities they need to present are a high stiffness, high repeatability and low friction.

Control

/webdav/site/lsro/shared/PRD/control/Controller_small.png

The robot controller is one of the most important components of a robotic system. It is composed with hardware, software and convenient algorithms to ensure safe and proper trajectory generation. This section is intended to present the robot control aspects with respect to software, hardware and control algorithms.

 

Calibration

/webdav/site/lsro/shared/PRD/calibrage_small.jpgRobots are affected by errors in displacing the end-effector. Calibration is the key to improve positioning accuracy: a fine characterization of the robot behaviour is performed in order to predict and correct those errors.