在传统的伺服中，编码器是作为电机末端的传感，各个机位同步就需要接收来自编码器实时位置反馈，控制器通过工业总线或者工业以太网串联，逐个扫描位置数据，即使再快的总线和再快的PLC也会存在些许延时，这就需要专业的伺服技术人员现场调试，有时候设备使用时间久了，机械磨损损耗较大，机械磨损后定位位置发生改变，还需要专业技术人员现场调整和维护，在电池生产线大批量产能需求下，使用成本和维护成本就增加了。 在机械终端加对值编码器，作为前端传感，位置数据直接并联输出到控制器，同步采集，无论有多少个点同时工作，也无论是采用气缸或者步进电机驱动，都可以实现不同执行器间协同工作，而且不需要繁琐的调试，只需要手动校准，把位置值写入控制器，控制器运行时读到数值输出开关点，控制机器，工作效率显著提高，更加稳定可靠，现场调试简单，且后期维护也方便这里提到开关点，有懂技术的会说用光电开关定位，但是在电池生产线上比如焊头、比如压辊是柔性的，只靠一两个开关点显然不能满足确定位的要求，而且一旦过冲还会损坏设备，所以需要柔性的传感器方案，单圈对值编码器就被当作“柔性电子凸轮开关”使用。 我们把单圈对值编码器简单理解为360度里面有很多个位置开关组合，假设把360度分成360个开关点编码，控制设备(比如PLC或单片机)接收到编码，可以根据需要选择这360个位置中任意位置作为电子凸轮的输出开关点，作为“凸轮进-减速”输出和“凸轮出-复归位”输出，来控制机械装置周而复始的往复工作。  这种柔性的电子式凸轮开关度高、重复性高、可靠性高，在多个位置上可以有多个凸轮开关点，根据需要任意位置编程输出，非常适合只需简单重复而又要求可靠的应用，就如在锂电的焊接和封装生产线上那简单重复的工序要求。
In the traditional servo system, the encoder is used as the sensor at the end of the motor. Each machine position synchronization needs to receive real-time position feedback from the encoder. The controller scans the position data one by one through the industrial bus or industrial Ethernet in series. Even the fastest bus and the fastest PLC will have a little delay, which requires professional servo technicians to debug on site. Sometimes the equipment is used for a long time and the mechanical wear and tear is large, The positioning position changes after mechanical wear, and it also needs professional and technical personnel to adjust and maintain on site. Under the demand of mass production capacity of the battery production line, the use cost and maintenance cost increase. Add an absolute value encoder at the mechanical terminal as the front-end sensor, and the position data is directly output to the controller in parallel for synchronous collection. No matter how many points work at the same time, or whether it is driven by a cylinder or a stepper motor, it can achieve the cooperative work between different actuators, and it does not need complicated debugging. It only needs manual calibration, writes the position value into the controller, and reads the value output switch point when the controller runs, The control machine has significantly improved working efficiency, is more stable and reliable, and is easy to debug on site, and it is also convenient to mention the switch point here. Some who understand the technology will say that the photoelectric switch is used for positioning, but in the battery production line, such as the welding head, such as the pressure roller, is flexible. Only one or two switch points can obviously not meet the requirements of accurate positioning, and once the overshoot will damage the equipment, so a flexible sensor scheme is required, The single-turn absolute value encoder is used as a "flexible electronic cam switch". We simply understand the single-turn absolute value encoder as that there are many position switch combinations in 360 degrees. Assuming that 360 degrees are divided into 360 switch point codes, the control equipment (such as PLC or SCM) receives the codes, and can select any of these 360 positions as the output switch points of the electronic cam as needed, as the "cam in - deceleration" output and the "cam out - return" output, To control the reciprocating work of the mechanical device. This flexible electronic cam switch has high precision, high repeatability and high reliability. It can have multiple cam switch points at multiple positions, and can be programmed and output at any position as required. It is very suitable for applications requiring simple repetition and reliability, such as the simple and repeated process requirements in the lithium battery welding and packaging production line.