ЖЖурнал. ЗЗаходи. (e-mir)

Хорошо, пусть будет так:

Проблема чувствительного датчика, переключающего туда-сюда механизм в зависимости от ввода, находящегося возле границы между двумя областями, хорошо известна. Для этого к датчику добавляется знание о его прошлых значениях, или гистерезис.

In cases where this cycling occurs rapidly, and to prevent damage to contactors and valves, an on-off differential, or “hysteresis,” is added to the controller operations. This differential requires that the temperature exceed setpoint by a certain amount before the output will turn off or on again. On-off differential prevents the output from “chattering” or making fast, continual switches if the cycling above and below the setpoint occurs very rapidly.

The best known use of hysteresis control is the common household thermostat. A furnace is turned on when the room temperature drops below a set point. It is turned off when the room temperature rises some fixed number of degrees above the set point.

Hysteresis: °C model 6 °C (± 3 °C)
°F model 10 °F (± 5 °F)

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