![]() For sequential and combinational logic, software logic, such as in a programmable logic controller, is used. The control system compares the value or status of the process variable (PV) being controlled with the desired value or setpoint (SP), and applies the difference as a control signal to bring the process variable output of the plant to the same value as the setpoint. For continuously modulated control, a feedback controller is used to automatically control a process or operation. It can range from a single home heating controller using a thermostat controlling a domestic boiler to large industrial control systems which are used for controlling processes or machines. position control Position Control system manages, commands directs, or regulates the behavior of other devices or systems using control loops.The actuation command may be pre-determined (open-loop control) or be dependent on sensors monitoring the flow state (closed-loop control). Examples are valves and plasma actuators. Passive devices, like turbulators or roughness elements, are steady and require no energy by definition. Active control requires actuators that may be driven in a time-dependent manner and require energy. This change may be accomplished by passive or active devices. It implies a small change of a configuration serving an ideally large engineering benefit, like drag reduction, lift increase, mixing enhancement or noise reduction. Flow Control Flow control is a major rapidly evolving field of fluid dynamics.The batching system is a batching system that uses a control device, a volume sensor and a shutoff or stopper in the form of a pump or valve. So when we set a batch control at a volume of 500 liters, the flow will be closed if the volume read on the flow meter shows the number 500 l and the flow will return to flow when we press the start button as is widely used in gas stations. The basic principle of batch control is to control a valve or pump to start / turn on and close / stop the flow when the volume of flow has been reached. ![]() The main purpose of this batching system is to obtain an accurate volume and is used mostly in the food industry, cement industry, beverage industry, and its direction is the filling system. The Batch Controller can be used using a flow meter that incorporates a contact head register (pulse switch).
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