Method of eliminating absolute encoder voltage variations in circuits

Eliminating absolute encoder voltage variations, a problem expected with this design will be the generation of bias: the 3% error may cause the voltage to vary between 3V and 4.5V. Each position of an incremental encoder corresponds to a defined digital code, so that its indicated value is only related to the start and end positions of the measurement and not to the intermediate processes of the measurement. Basic calculations can be performed. The digital absolute encoder is 50kΩ (25% tolerance), R1 is 16.5K , R2 is 100K . The absolute value encoder end-to-end resistor 25% tolerance is the largest source of error in the design. 　　Now consider the same calculation with different tap resistors, if the absolute value encoder is 37.5kΩ the top voltage is 4.46V and the low side is 3.25V; if the absolute value encoder is 62.5kΩ the top voltage is 4.54V and the low side voltage is 2.7...