Motion Control Sensors
POSITAL - FRABA maxon FAULHABER attocube systems AG Advanced Micro Controls Inc PI (Physik Instrumente) L.P. Nanotec Electronic US, Inc Servo2Go.com MotiCont Schneeberger Inc Optimal Engineering Systems Electromate Inc. MotionControl.com Zaber Technologies Inc. ams USA Inc. APEM Inc Aerotech, Inc Everight Position Technologies Corp. MICRONOR ARC Systems, Inc. Data Device Corporation Oriental Motor USA Cognex Corporation ABB Motion TRM International Ltd US Digital Corporation Lika Electronic HEIDENHAIN Corporation RLS Merilna tehnika d.o.o.
Sensors contained within a basic motion control system are one or more feedback sensors such as optical encoders, resolvers or Hall effect devices to return the position or velocity of the actuator to the motion controller in order to close the position or velocity control loops.
Common control functions include:
- Velocity control.
- Position (point-to-point) control: There are several methods for computing a motion trajectory. These are often based on the velocity profiles of a move such as a triangular profile, trapezoidal profile, or an S-curve profile.
- Pressure or Force control.
- Impedance control: This type of control is suitable for environment interaction and object manipulation, such as in robotics.
- Electronic gearing (or cam profiling): The position of a slave axis is mathematically linked to the position of a master axis. A good example of this would be in a system where two rotating drums turn at a given ratio to each other. A more advanced case of electronic gearing is electronic camming. With an electronic cam, the slave axis follows a profile that is a function of the master position.