KOLLMORGEN 6SM47L-3.000，6SM47L-3000 encoder motor

Description

KOLLMORGEN 6SM47L-3.000，6SM47L-3000 encoder motor

KOLLMORGEN 6SM47L-3.000，6SM47L-3000 encoder motor

In a closed-loop feedback system, the innermost loop is the commutation loop, which monitors the motor’s rotor and ensures that it keeps spinning. Outer loops are: Position loop, Velocity loop and Current loop Velocity information and the velocity loop are derived from (are computed based on) position information. The current loop is also known as a torque loop, since amplitude of the electrical current is directly proportional to torque. Torque is force applied in an axis of rotation.

The servo amplifier can use single (two poles) or multi-speed (multiple poles) resolver feedback to calculate primary position, velocity, and commutation information. A resolver can be thought of as a transformer whose output is unique for any given shaft position (an absolute position feedback). The transformer is driven with a sinewave reference signal. Two AC signals are returned from the resolver into the Sine and Cosine inputs. All three of these sinewave signals are low-level and susceptible to noise.

Encoders direct pulses of light, from a light source at the motor or load, to photo detectors through an encoded disk. These light pulses are then converted into digital feedback information. There are two general types of encoders – rotary and linear. Rotary (rotating disk) encoders are typically mounted to the motor shaft. Linear encoders are typically mounted to the load.

Motion operations are universally embodied in a graph called the motion profile. Understanding and using motion profiles to define your motion application is an important part of achieving best system performance. The motion profile plots one or more motion operations and measures it against time.