Multivariate Control Performance Assessment and Control System Monitoring via Hypothesis Test on Output Covariance Matrices

2015 ◽  
Vol 54 (19) ◽  
pp. 5261-5272 ◽  
Author(s):  
Zhengbing Yan ◽  
Cheng-Lin Chan ◽  
Yuan Yao
Keyword(s):  
Control System ◽  
Performance Assessment ◽  
Hypothesis Test ◽  
Covariance Matrices ◽  
Control Performance ◽  
System Monitoring ◽  
And Control ◽  
Multivariate Control ◽  
Control Performance Assessment

Nonlinear generalized minimum variance control and control performance assessment of nonlinear systems based on a Wiener model

2017 ◽  
Vol 40 (5) ◽  
pp. 1538-1553 ◽  
Author(s):  
Mahdi Kazemi ◽  
Mohammad Mehdi Arefi
Keyword(s):  
Nonlinear Systems ◽  
Performance Assessment ◽  
Minimum Variance ◽  
Control Performance ◽  
Wiener Model ◽  
Current Controller ◽  
Nonlinear Plants ◽  
Linear Disturbance ◽  
And Control ◽  
Control Performance Assessment

In this paper, a nonlinear generalized minimum variance (NGMV) controller based on a Wiener model is designed. The NGMV controller is used as a benchmark in control performance assessment to assess a class of nonlinear systems modelled by the proposed Wiener model, while a general linear disturbance is added in the output of the plant. It is shown that, to assess a nonlinear system, the routine input–output operating data and an estimated value of the intermediate signal in the Wiener model can be used to evaluate the performance of the current controller. The proposed methodology is simulated for two nonlinear plants with different nonlinear characteristics to show the effectiveness of the proposed approach.

Application of PID in Controllable Pitch Propeller of a Multipurpose Ocean Tug

2013 ◽  
Vol 464 ◽  
pp. 253-257
Author(s):  
Hui Fang Chen
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
High Reliability ◽  
Control Process ◽  
Good Control ◽  
Control Performance ◽  
Hardware Configuration ◽  
Design Idea ◽  
And Control

This paper takes the automatic control system of controllable pitch propeller in a multipurpose ocean tug as an example to describe the application of the S7-200 series PLC in the control system of 4500 horse power controllable pitch propeller in detail. The principle of control system is addressed, as well as the hardware configuration, the design idea of the main software and control process. The system shows high reliability, accuracy and good control performance in practical in practical running.

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