Global distribution of maternal causes of. death. A maternal death is defined as the death of a. woman while pregnant or within 42 days of. termination of pregnancy, regardless of the. site or duration of pregnancy, from any cause. related to or aggravated by the pregnancy or. its management.
There are two types of control systems namely: 1  Open loop control systems (non-feedback control systems) 2  Closed loop control systems (feedback control systems)
The advanced type of automation that revolutionized manufacturing, aircraft, communications and other industries, is feedback control, which is usually continuous and involves taking measurements using a sensor and making calculated adjustments to keep the measured variable within a set range.