Questions and Answers
What type of controller is used for continuously modulated control?
Feedback controller
What does a control system compare with the setpoint in a feedback control system?
Process variable (PV)
Which type of control system uses software logic, such as in a programmable logic controller?
Sequential and combinational logic control
In which type of control system is a control signal applied to bring the process variable output of the plant to the same value as the setpoint?
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What does a control system manage, command, direct, or regulate using control loops?
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Study Notes
Types of Control Systems
- A continuously modulated control system uses a proportional-integral-derivative (PID) controller.
- In a feedback control system, the control system compares the process variable (PV) with the setpoint (SP) to determine the deviation.
Control Systems and Logic
- A control system that uses software logic, such as in a programmable logic controller (PLC), is a discrete control system.
Control Systems and Setpoints
- In an open-loop control system, a control signal is applied to bring the process variable output of the plant to the same value as the setpoint.
Control Systems and Process Management
- A control system manages, commands, directs, or regulates the process using control loops.
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