1. The encoder shaft rotates to change the zero. When the encoder is installed, the rotary shaft corresponds to the zero position. The general incremental value and the absolute value of the single circle will use this method, and the sleeve type encoder also uses this method. Disadvantages, zero is not easy to find, the accuracy is low. An electronic clock device with a wireless network monitoring camera is characterized in that it comprises an electronic clock device body with a wireless network monitoring camera; the electronic clock device body with a wireless network monitoring camera is composed of a foot, a wireless transmission module, a It consists of a rechargeable battery, a speaker, a touch display screen, a camera, a casing, an infrared device, and a microprocessor; the feet are fixedly installed at the bottom of the rechargeable battery; a casing is fixedly installed on the top of the rechargeable battery, and the The interior is provided with a touch screen, a camera, an infrared device and a microprocessor; the microprocessor is electrically connected to the rechargeable battery through wires; the wireless transmission module, speaker, display, camera and infrared device are connected to the micro processor through wires The display screen is arranged at the bottom of the camera, and the camera is surrounded by an infrared device; the wireless transmission module is fixedly installed on both sides of the rechargeable battery, and the speakers are opened on both sides of the casing Wifi Electronic Clock,Wifi Electronic Clock hidden camera,hidden camera wifi,hidden camera wireless,spy camera wifi Jingjiang Gisen Technology Co.,Ltd , https://www.gisengroup.com
2. It is equivalent to the above method, except that the encoder housing is rotated and changed to zero. This is mainly used for some compact mounting synchronous flanges (also called servo flanges).
3. Power on the mobile installation machine to zero. Power on the installed machine to the corresponding encoder zero position.
4. Offset calculation, the machine and the encoder do not need to change the zero. According to the deviation between the encoder reading and the actual position, the offset is obtained, and the offset is subtracted after the encoder reading. For example, the encoder reading is 100, and the actual position is 90. When calculating the actual position 0, the encoder reading should be 10, and this "10" is the offset, and the number read by the encoder later, minus The offset is the position value. Can be repeated multiple times to correct the offset. For incremental value encoders, read the raw mechanical zero to the first Z point as an offset. This method is often used for encoders with higher precision or for absolute multi-turn encoders with larger ranges.
5, intelligent external zero, some intelligent function of the encoder, can provide external set function, such as through the button attached to the encoder, or the external software setting function to zero.
6. It should be noted that the zero value of the absolute encoder is the maximum value of the encoding cycle, whether it is the absolute value of a single circle or the absolute value of multiple turns. If the zero position is set, then it goes down (sliding, moving). , inertia overshoot, etc., it is possible that the data jumps to the maximum at a time. For a large number of high-order absolute values, the data may overflow the original setting range. In addition, the absolute encoder also has a problem of the direction of rotation. After zeroing, if the direction is wrong, it jumps from 0 to the maximum, and then becomes larger and smaller. Some imported encoders do not use this feature despite the external zero function. (We have encountered a lot of confusion with imported absolute encoders, don't be superstitious to import).
7. The best setting method, preset a non-zero position (leaving the slip, overshoot margin) and preset the rotation direction + offset calculation method. Another method is to set "medium", the offset is the midpoint value, after the set line is in contact with the power supply, the encoder output is the midpoint position, such a stroke is +/- half full, in such a In the range of travel, regardless of the direction of rotation, ensure that there is no zero jump.
December 04, 2022