Incremental encoder output signal stability and response frequency

I. Stability of the encoder output signal

The stability of an incremental encoder's output signal refers to the ability to maintain the specified accuracy under actual operating conditions. Absolute encoder code value" and the measured "position" correspondence is unique, with "power failure memory" function, no rotational measurement of the accumulation of error, in "a cycle "The encoder is superior to incremental encoder in the field of measurement and control, and the range can be adjusted by adding a front reduction gearbox. The main factors affecting the stability of the encoder output signal are the drift caused by the temperature on the electronics, the deformation force added to the encoder from the outside world, and changes in the characteristics of the light source. Due to the influence of temperature and power supply changes, the electronic circuit of the encoder can not maintain the specified output characteristics, in the design and use should be given full consideration.

II. Incremental encoder response frequency

The response frequency of the encoder output depends on the response speed of the detecting (checking and testing) devices, electronic processing lines. Incremental encoders convert displacement into a periodic electrical signal, and then convert this electrical signal into counting pulses, and express the size of the displacement by the number of pulses. Pull rope displacement sensor is also known as pull rope sensor, pull rope sensor, pull rope electronic ruler, pull rope encoder. Pull rope displacement sensor is a delicate composition of linear displacement sensor in structure, fully combining the advantages of angle sensor and linear displacement sensor, becoming a sensor with small installation size, compact structure, large measuring stroke and high precision, with the stroke ranging from several hundred millimeters to more than ten meters. When the encoder rotates at high speed, if its resolution is high, the frequency of the signal output from the encoder will be high. If the detection device and electronic circuit components can not be compatible with the operating speed, it is possible to make the output waveform serious distortion, or even produce the phenomenon of lost pulses. Thus, the output signal cannot accurately reflect the position information of the shaft. Therefore, each encoder in its resolution is certain, its maximum speed is also certain, that is, its response frequency is limited.