Final answer:
The adjustment made to sensor values to correct imperfections is called calibration, which is necessary for obtaining accurate data from the sensors to ensure proper system control.
Step-by-step explanation:
The adjustment of sensor values to reduce the impact of imperfections in a microcontroller system is known as calibration. This process involves setting a sensor to a known standard or adjusting it to match a known quantity so that the readings it provides are accurate. When a sensor component of a homeostatic mechanism detects the value of a variable, it sends this data to the control center.
The control center then compares this data against predefined normal values to determine if an adjustment is necessary. Factors that contribute to the uncertainty of sensor readings include the limitations of the measuring device and the skill of the person making the measurement. Therefore, to ensure accurate system control and data integrity, sensor calibration is critical.