【Q&A Question 076】2016.07.05
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【Q&A Question 076】July 05, 2016: What is \"cascade control\"? A brief description is sufficient. The answer key will be available after responding; scoring is based on addressing the key points. It is controlled by two parameters together: the output of the first parameter serves as the input for the second parameter, and the output of the second parameter controls the valve’s operation.
Cascade control system-----a system in which two regulators operate in series, with the output of one regulator serving as the setpoint for the other regulator.
Two regulators operate in series, with the output value of one regulator serving as the setpoint for the other
A cascade control system has two closed loops in its structure; one closed loop is inside the other, and it is referred to as the inner loop or secondary loop； The other closed loop is external, and is called the outer loop or main loop. The secondary loop is responsible for coarse tuning during the control process, while the primary loop handles fine tuning. Cascade control achieves control effects that are difficult to attain with a conventional single-loop control system, by utilizing the cooperation of these two loops.
It operates by two controllers, a primary one and a secondary one, working in series. The output of the main controller serves as the setpoint for the secondary controller, and the output of the secondary controller is used to control the control valve in order to achieve constant-value control of the variable
It is a system in which two regulators operate in series, with the output of one regulator serving as the setpoint for the other regulator.
Cascade control: Two parameters are controlled together, with the output of the first parameter serving as the input for the second parameter, and the output of the second parameter controlling the valve operation.
The cascade control system is named due to its structural characteristics. It operates by two controllers, a primary one and a secondary one, working in series. The output of the main controller serves as the setpoint for the secondary controller, whose output is used to operate the control valve in order to achieve constant-value control of the variable.
There are two controllers, each receiving measurement signals from different parts; the output of one controller serves as the setpoint for the other controller, which is equivalent to the two controllers operating in series