2017 - Most Popular Article - To achieve the highest performance, the stepper motor can be treated as a 2 phase brushless servo motor. Current to the motor will then be controlled as a function of the error signal just as with standard servo motors.
With the new e-Series cobot line, Universal Robots raises the bar for cobots, adding unique new features while significantly strengthening the four core principles defining collaborative robots: fast set-up, easy programming, flexible deployment, and safe operation. With a new built-in, tool-centric Force/Torque sensor the e-Series is ready to take on applications requiring force control right out of the box. A repeatability of 30 micron means the new cobots are suitable for very precise finishing, assembly and electronics tasks. A re-designed user interface decreases cognitive load and expedites program development, while a new externally accessible, 500Hz system bus enables more complex motion control algorithms or profiles.