Sensorless tension control in paper machines

Sensorless Control of Induction Machines

theoret. zero close to, or temporarily zero Abstract — Controlled induction motor drives without mechanical speed sensors at the motor shaft have the attractions of low cost and high reliability. To replace the sensor, the information on the rotor speed is extracted from measured stator currents and from the voltages at the motor terminals. Vector controlled drives require estimating the magnit...

Sensorless Control of AC Machines using HF Excitation

In the present paper a new method for sensorless control is presented, which can handle the presence of multiple non-separatable saliencies. Because of the inimitability of the measured impedance curves, the method is based on the minimum error between the measured curves during operation and precommissioned reference curves. The method can handle alternating and rotating test signals. The capa...

Position/speed Sensorless Control for Permanent-magnet Synchronous Machines

Paper machines

Sensorless Torque/Force Control

Motion control systems represent a main subsystem for majority of processing systems that can be found in the industrial sector. These systems are concerned with the actuation of all devices in the manufacturing process such as machines, robots, conveyor systems and pick and place mechanisms such that they satisfy certain motion requirements, e.g., the pre specified reference trajectories are f...