How does the rotary encoder work in the connected parts

A rotary encoder is a sensor device that can be used to measure speed, angle, displacement, and distance. With the rotary encoder, we can measure a variety of long and short distances, ranging from hundreds of meters to small Several micrometers are fine; we can also use it to read the movement speed and angle of various electrical equipment. At the same time, its service life is relatively long, which allows us to use it without all kinds of worries. Today, let’s take a look at how the rotary encoder works in the connecting parts.

Rotary encoder is a sensor based on the principle of electromagnetic induction. If a sinusoidal excitation current is applied to the rotor winding, the rotor produces the same frequency voltage in the stator winding, but the phase or amplitude changes with the relative displacement of the rotor and stator. The induced voltage is processed by the electronic circuit, such as phase discrimination or amplitude discrimination and A/D conversion, and multiple digital signals (absolute values) are output. Rotary encoders usually include incremental rotary encoders, absolute rotary encoders, sinusoidal output rotary encoders, motor rotary encoders, which are generally many advanced mines! In the application of PLC system downhole motor control. The function of the coupling of the soft connection components of the encoder, the encoder can also be called speed sensor, displacement sensor and angle sensor. When connected to a motor or other device, a shaft encoder requires a flexible connection called a coupling.

The following coupling effects:

1. Reduce the torsional vibration of the shaft. However, this can only be achieved by using a larger damping (increasing friction damping) structure or a larger damping material (such as rubber, plastic, etc.) as an intermediate power transmission coupling. When the machine is accidentally overloaded, it often causes damage or other mechanical transmission devices. If the safety coupling on the drive shaft is separated or slipped using the joint sleeve to break the connection piece, the driving force transmission flow is interrupted or the flow force is restricted, which can play a safety role. 1 Manufacturing and installation errors caused by the connection are compensated for the two shafts. Directional displacement, radial displacement and angular displacement to avoid extra load on the shaft (large tortoise strength).

2. Reduce the effect of the torsion shaft of the reducer.

3. Change the resonance speed of the shaft, such as when the impact energy is the same. The torsion angle is larger (that is, the stiffness is smaller), and the impact torque is smaller. Low resonance speed. In addition, the moment of inertia of the coupling also affects the resonance speed of the shaft.