What is the terminology for having different/spaced-out on and off set points for a particular controlled process?
When a system does not have the set points set appropriately, it could exhibit something like contact bounce.
This is not limited to any particular kind of system. It can be for a electro-mechanical system with physical contacts and switches, or it can be for a software system. "Debouncing" can be done in a variety of ways, such as physical distances, time delays, introducing some kind of hysteresis behavior, etc.
A thermostat controls the AC in a house. It is set to turn on at 90 degrees and turn off at 70 degrees. When the thermostat reads 90 degrees, it turns the AC on, and when the thermostat reads 70 degrees, it turns the AC off.
If this system did not have the correct set points, it would exhibit something akin to contact bounce:
- If the thermostat is set to switch on/off at 80 degrees, when the thermostat reads 80 degrees, it turns the AC on, but could bounce back and forth between on and off while the temperature varies slightly from 79-81 degrees.
- Similarly, if the thermostat is set to switch on at 80 degrees and off at 79 degrees, when the thermostat reads 80 degrees, it will turn the AC on, and as the AC cools the temperature down from 80 to 79, it will turn the AC off. This will occur relatively rapidly but not as rapidly as the example given above.