scholarly journals I-PD Controller Design for Systems described by Fuzzy Model using Coefficient Diagram Method

2013 ◽  
Vol 25 (3) ◽  
pp. 748-759
Author(s):  
Masaya SASAKI ◽  
Hee-Hyol LEE ◽  
Michio MIYAZAKI
Keyword(s):  
Controller Design ◽  
Fuzzy Model ◽  
Pd Controller ◽  
Diagram Method ◽  
Coefficient Diagram Method

scholarly journals Aircraft Flight Stabilizer System by CDM Designed Servo State-Feedback Controller

Aerospace ◽  
2021 ◽  
Vol 8 (2) ◽  
pp. 45
Author(s):  
Ekachai Asa ◽  
Yoshio Yamamoto
Keyword(s):  
Flight Control ◽  
State Feedback ◽  
Controller Design ◽  
Nonlinear Models ◽  
Feedback System ◽  
Flight Control System ◽  
Diagram Method ◽  
Performance Requirement ◽  
Directional Motion ◽  
Coefficient Diagram Method

This research presents an automatic flight control system whose advantage is its ease of modification or maintenance while still effectively meeting the system’s performance requirement. This research proposes a mixed servo state-feedback system for controlling aircraft longitudinal and lateral-directional motion simultaneously based on the coefficient diagram method or CDM as the controller design methodology. The structure of this mixed servo state-feedback system is intuitive and straightforward, while CDM’s design processes are clear. Simulation results with aircraft linear and nonlinear models exhibit excellent performance in stabilizing and tracking the reference commands for both longitudinal and lateral-directional motion.

scholarly journals Robust Controller Design for Multi-Input Multi-Output Systems Using Coefficient Diagram Method

Entropy ◽  
2021 ◽  
Vol 23 (9) ◽  
pp. 1180
Author(s):  
Kai Liu ◽  
Fanwei Meng ◽  
Shengya Meng ◽  
Chonghui Wang
Keyword(s):  
Controller Design ◽  
Mimo Systems ◽  
Coupling Effect ◽  
Mimo System ◽  
Measurement Noise ◽  
Robust Controller ◽  
Diagram Method ◽  
Coefficient Diagram Method ◽  
Processing Measurement ◽  
Robust Controller Design

The coupling between variables in the multi-input multi-output (MIMO) systems brings difficulties to the design of the controller. Aiming at this problem, this paper combines the particle swarm optimization (PSO) with the coefficient diagram method (CDM) and proposes a robust controller design strategy for the MIMO systems. The decoupling problem is transformed into a compensator parameter optimization problem, and PSO optimizes the compensator parameters to reduce the coupling effect in the MIMO systems. For the MIMO system with measurement noise, the effectiveness of CDM in processing measurement noise is analyzed. This paper gives the control design steps of the MIMO systems. Finally, simulation experiments of four typical MIMO systems demonstrate the effectiveness of the proposed method.

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