Nearly every device we know makes use of the controls, the difference being the type of control and the desired result. A simple task like turning the fan in your room also utilizes some form of control system. It is a device or set of devices used to manage, command, direct, or regulate other device or system behaviour. Both make use of sensors, from basic switches that turn on the lights in your rooms to complex systems that run heavy machinery in industrial works.If you wish to learn more about this, visit Los Angeles Access Control Systems.
Based on whether a human body (an operator) is physically involved in it, control systems may be divided into manual control or automatic control. The shower heater can be a good example of a hand device. The heater can be turned on and the water temperature changed by turning a knob. The knob can be adjusted accordingly, if the water is too cold or too hot. It illustrates how a human body manipulates a system thus classifying a shower heater as a manual control device.
Such systems also provide for assessing, estimating, evaluating and correcting the desired outcome. When a system is turned on a measurement can be taken. In the case of the shower, reading such as the water temperature can be computed, evaluated and compared with the desired temperature. If the desired result isn’t, it can be corrected accordingly. Manual controls have a drawback compared to automatic control systems, as they are not always able to provide precision. If this is the case a manual system should be replaced with an automated control system. But manual systems are also important, depending on a situation. Take the shower heater for example; not everyone would prefer the same water temperature to the shower, therefore it is important to have manual control in this instance.
Automatic readings of control system outputs are taken and calculated in automatic control systems, which are then compared to pre-fed measurements keyed into the system. The system then evaluates those readings and adjusts them automatically to the desired readings. These provide accurate results as it would be impossible for a manual operator to judge measurements simply by looking at the output.
Automatic systems can use sensors and controllers to replace the operator for exact results, depending on their application. They also have software installed inside them to act as the system’s ‘brain’ for decision making.