Due to the progressive digitization of the industry, the class of collaborative robots are increasingly taking on new responsibilities and becoming more intelligent. For the monitoring of robotic systems and the optimization of their operations, modern sensor technology is essential. Reliable measuring technology increases the mobility of the robot joints and the reaction rate of the machine, and significantly contributes to the compliance with strict safety requirements. Be it automotive, food, chemical, medical technology or logistics – robot systems are now used in almost all areas of industrial manufacturing. Often, they are used in production steps that, because of the necessary speed and power, or high safety risks, are not appropriate for human labor. A subgroup of industrial robots, known as “collaborative robots”, transcend the robot-human barrier, and work closely with people and to tackle high-precision tasks.
Very accurate measuring signal with little disruption
Several measurements with only one sensor
Insensitivity to tangential and axial shocks and to shear forces
Sensors are of particular importance for the collaborative robots. Since these are used in the same production lines as human labor and work side by side with people, the issue of safety in the design of the robot has the highest priority. For example, a new code by the German Social Accident Insurance (DGUV) will tighten the standards for approval of collaborative robots and continue to ensure optimum job security. These additional safety requirements are written down in the EN ISO 10218 standard parts 1 and 2 and ISO / TS 15066. In the class of lightweight robotics these safety standards can be met by using reactive sensors in robot joints . Mechanical sensors detect collisions within microseconds and stop the movement instantly to avoid injury and prevent further collisions.
Collaborative robots are characterized by their agility and precision, which are necessary for tasks that require highly sensitive and precise movements. In order to fulfill these requirements, very accurate sensor solutions are built into the joints. KONUX sensors offer measurement results in an accuracy class of <0.1% and a resolution of up to 24bit. In addition to that, the KONUX sensor is able to meet high rigidity requirements. The integrated angle measurement furthermore renders superfluous the need for an extra sensor and complex numerical methods. The robustness of the sensors also helps plant operators, since measurement errors due to shear forces, and tangential or axial shocks can be avoided, and the forces occurring are accurately measured. Since an estimated 90% of the operations in industrial production have not yet been automated, Collaborative robots represent a large growth market. With the help of precise and robust sensor systems they are used in more and more areas of production, and meet even the strictest safety requirements.