.png){kind=icon}
Return
Cascade control based on minimum sensitivity in outer loop for processes with time delay
.png){kind=icon}
PRE
AI
DOI：10.1007/s11771-012-1328-3.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
A new cascade control program was proposed based on modified internal model control to handle stable, unstable and integrating processes with time delay. The program had totally four controllers of which the secondary loop had two controllers and the primary loop had two controllers. The two secondary loop controllers were designed using IMC technique. They were decoupled completely and could be adjusted independently, which avoided the undesirable influence on performance of the primary controllers. The main controller in the primary loop was devised as a PID using the method of minimum sensitivity, which could guarantee not only the nominal performance but also the robust stability of the system. A setpoint filter was added in the primary loop to improve the tracking performance. All the controllers of the two closed-loops were designed analytically, and could be adjusted and optimized by single parameter respectively. Simulations were carried out on three various processes with time delay, and the results show that the proposed method can provide a better performance of both set-point tracking and disturbance rejection and robustness against parameters perturbation.
Keywords:
cascade control
time delay
H-infinity performance specification
modified internal mode control
multiple degrees of freedom
Journal
IF:
4.4
Papers:
5.2K
Citations:
1.0W
Organization
Cited Papers
Simultaneous online automatic tuning of cascade control for open loop stable processes.png)
ISA TRANSACTIONS
ISA TRANSACTIONSIF6.5
PREAI
ShareSaveEnhanced control of integrating cascade processes with time delays using modified Smith predictor
PREAI
ShareSaveShareSaveUse of smith predictor in the outer loop for cascaded control of unstable and integrating processes
PREAI
ShareSaveEnhancing the performance of parallel cascade control using Smith predictorISA TRANSACTIONS
ISA TRANSACTIONSIF6.5
PREAI
ShareSave
View more