German italsensor encoder italsensor model italsensor price

italsensor encoders are used to measure physical quantities such as speed, position, velocity, or angle bai. They are sensors that convert mechanical displacement du into electrical signals zhi, and are classified into incremental and absolute types. Incremental encoders generate pulse signals, and the number of pulses can be used to measure speed, length, or position. For absolute encoders, each position corresponds to a digital value of displacement. Inside the encoder, there is a rotating disk (code disk) with several transparent and opaque windows. A photoelectric receiver collects the intermittent light beams, thus converting light pulses into electrical pulses, which are then processed and output by electronic output circuits.

italsensor encoder working principle

The magnetic encoder consists of an optical code disk with a central shaft, featuring concentric transparent and opaque lines. Photoelectric emission and reception devices read these to obtain four sets of sine wave signals combined as A, B, C, and D, with each sine wave having a phase difference of 90 degrees. By inverting the C and D signals and superimposing them on the A and B phases, signal stability is enhanced. Additionally, one Z phase pulse is output per revolution to represent the zero reference position. Since the A and B phases differ by 90 degrees, the direction of rotation (forward or reverse) of the magnetic encoder can be determined by comparing which phase leads. The zero reference position is obtained via the zero pulse. Code disk materials include glass, metal, and plastic. Glass code disks have very thin lines deposited on glass, offering good thermal stability and high precision. Metal code disks use direct transparent and opaque lines, but due to the thickness of the metal, precision is limited, and thermal stability is an order of magnitude worse than glass. Plastic code disks are an economical option. The principle of magneto-electric encoders is similar to that of photoelectric encoders, but they use magnetic field signals. Inside a magnetic encoder, a magnetic rotor and magnetoresistive sensors are used. The rotation of the magnetic rotor causes changes in the internal magnetic field strength. The magnetoresistive sensor detects these changes, and the signal is processed by the circuit for output. The number of magnetic poles on the magnetic rotor, the number of magnetoresistive sensors, and the signal processing method determine the resolution of the magnetic encoder. The advantage of using magnetic field principles is that magnetic signals are not affected by dust, moisture, high temperatures, or vibration.

italsensor encoder features

When the encoder shaft rotates, corresponding pulses are output. The determination of rotation direction and the increase or decrease in pulse count are achieved through the rear direction-judgment circuit and counter. The counting start point can be set arbitrarily, allowing for multi-turn infinite accumulation and measurement. The Z signal, which outputs one pulse per revolution, can serve as the reference mechanical zero position. The encoder outputs a fixed number of pulses per revolution, determined by the number of lines on the encoder grating. To improve resolution, the original pulse count can be multiplied using the A and B signals with a 90 degree phase difference, or a higher-resolution encoder can be installed.

italsensor encoder hybrid type

Hybrid absolute encoders output two sets of information: one set detects magnetic pole position and provides absolute information functionality; the other is identical to the output of an incremental encoder. Photoelectric encoders are angle (angular velocity) detection devices. They convert the angular input to the shaft into corresponding electrical pulses or digital values using photoelectric conversion principles. They offer advantages such as compact size, high precision, reliable operation, and digital interfaces. They are widely used in devices and equipment requiring angle detection, such as CNC machine tools, rotary tables, servo drives, robots, radar, and military target measurement systems.

Weidou Intelligent Technology specializes in selling German italsensor rotary encoders, italsensor incremental encoders, italsensor absolute encoders, italsensor photoelectric encoders, italsensor magneto-electric encoders, italsensor shafted encoders, italsensor hollow shaft encoders, italsensor contact brush encoders, italsensor angle encoders, italsensor linear encoders, italsensor digital encoders, italsensor draw-wire encoders, italsensor position encoders, italsensor hollow bore encoders, and italsensor spindle encoders. All italsensor products are original imports from Germany. Customers are welcome to inquire and place orders.