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Rotary optical encoder design trends3！
Changchun Rongde Optics Co.,Ltd. Release time：2016-07-23 Browse：1212Rotary optical encoder design trends
Photoelectric encoder is a mechanical motion control measure rotational body position (angle) and speed sensor, it has two kinds of rotary and linear, wherein the rotary optical encoder due to high precision, easy installation, has been widely used. With the rapid development of motion control products, China's demand for high-precision encoders big, but mainly rely on imports. Currently, active in the market of the encoder is mainly foreign, such as Germany Heidenhain (Heidenhain), Mel (Meyle), Fuchs (P + F), Turck (Turck), USA (GPI), Japan Tamagawa, Renishaw (Renishaw), Korea (Metronix), Autonics (Autonics), Fort Union, Switzerland (Baumer), Turkey (OPKON), as well as our CIMIC like. Throughout recent years, rotary optical encoder of development, its design trends include the following four aspects to elaborate.
Third, we continue to improve the resolution. NC applications, to improve the resolution of the encoder has been the focus of market competition. For example, Japan FANUC company designed 2iA encoder resolution up 16000000p / r, which makes the servo motor movement is very smooth, nanometer interpolation function for the servo control system Nano create the conditions for the so-called "nano-Control" is a servo system detects when the resolution of 1m, interpolation resolution can be increased to 1nm, which can greatly improve the accuracy of CNC machine tools. Currently, the resolution improvement methods, one XL disc diameter, to increase the fringe grating; the second is from the inside of the DSP-based servo drive encoder interface circuit Incremental encoder output A, B two rectangular wave pulse signal detecting leading and trailing edges, to increase two times or four times the resolution; the third is also a sinusoidal signal incremental encoder output electronically interpolated to lower costs get higher resolution. Now, the United States GPI company also designed HR2A incremental encoder module electronics segment, ranged from 1 to 20 times the score line encoder pulse number, then by 4-fold obtain 80 times the number of pulses.
Photoelectric encoder is a mechanical motion control measure rotational body position (angle) and speed sensor, it has two kinds of rotary and linear, wherein the rotary optical encoder due to high precision, easy installation, has been widely used. With the rapid development of motion control products, China's demand for high-precision encoders big, but mainly rely on imports. Currently, active in the market of the encoder is mainly foreign, such as Germany Heidenhain (Heidenhain), Mel (Meyle), Fuchs (P + F), Turck (Turck), USA (GPI), Japan Tamagawa, Renishaw (Renishaw), Korea (Metronix), Autonics (Autonics), Fort Union, Switzerland (Baumer), Turkey (OPKON), as well as our CIMIC like. Throughout recent years, rotary optical encoder of development, its design trends include the following four aspects to elaborate.
Third, we continue to improve the resolution. NC applications, to improve the resolution of the encoder has been the focus of market competition. For example, Japan FANUC company designed 2iA encoder resolution up 16000000p / r, which makes the servo motor movement is very smooth, nanometer interpolation function for the servo control system Nano create the conditions for the so-called "nano-Control" is a servo system detects when the resolution of 1m, interpolation resolution can be increased to 1nm, which can greatly improve the accuracy of CNC machine tools. Currently, the resolution improvement methods, one XL disc diameter, to increase the fringe grating; the second is from the inside of the DSP-based servo drive encoder interface circuit Incremental encoder output A, B two rectangular wave pulse signal detecting leading and trailing edges, to increase two times or four times the resolution; the third is also a sinusoidal signal incremental encoder output electronically interpolated to lower costs get higher resolution. Now, the United States GPI company also designed HR2A incremental encoder module electronics segment, ranged from 1 to 20 times the score line encoder pulse number, then by 4-fold obtain 80 times the number of pulses.
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