Identification of Dynamic Matrix and Noise Model Using Closed-loop Data

2008 ◽  
pp. 79-97
Author(s):  
Biao Huang ◽  
Ramesh Kadali
Keyword(s):  
Closed Loop ◽  
Noise Model ◽  
Dynamic Matrix

Noise model considering electrical feed-through under force rebalance closed-loop detection of MEMS gyroscope

2020 ◽  
Vol 30 (5) ◽  
pp. 055007 ◽  
Author(s):  
Feng Bu ◽  
Xi Wang ◽  
Bo Fan ◽  
Shuwen Guo ◽  
Dacheng Xu ◽  
...  
Keyword(s):  
Closed Loop ◽  
Noise Model ◽  
Mems Gyroscope ◽  
Loop Detection

scholarly journals MODEL PREDICTIVE CONTROL OF A HYDRAULIC ACTUATOR IN TORQUE APPLYING SYSTEM OF A MECHANICALLY CLOSED-LOOP TEST RIG FOR THE HELICOPTER GEARBOX

Aviation ◽  
2020 ◽  
Vol 23 (4) ◽  
pp. 143-153
Author(s):  
Aida Parvaresh ◽  
Mohsen Mardani
Keyword(s):  
Predictive Control ◽  
Closed Loop ◽  
Operating Conditions ◽  
Hydraulic Actuator ◽  
Test Rig ◽  
Dynamic Matrix ◽  
University Of Technology ◽  
Predictive Controller ◽  
Loop Procedure ◽  
Education Culture

Transmission health is an important factor in safety and maintenance costs in industries, so construction of test rigs for testing high-powered gearboxes under different operating conditions of helicopters is required. The studied test rig, which is developed at Sharif University of Technology branch of ACECR (Academic Centre of Education, Culture and Research) is mainly used for testing high-powered gearboxes through a mechanically closed-loop procedure. For providing a variety of speeds and torques in test rigs, torque applying system is required. According to generation of higher forces, reduced size of equipment and accurate positioning, electro hydraulic actuators (EHAs) are used for applying torques for planetary gearboxes of this test rig. Due to the importance of applying accurate torques in evaluation of the gearbox performance, first an accurate model of EHA is derived, which captures the system dynamics using system identification method with low consumed time and simple relations. After that, a type of model predictive controller called dynamic matrix controller is proposed for controlling EHA under determined requirements. Then, the performance of proposed controller under normal conditions as well as in presence of disturbance is investigated. The results show a good tracking of controller for various reference inputs in different conditions. Moreover, the performance of the proposed controller is compared with the performance of classical proportional-integral-derivative (PID) controller and superior characteristics of the proposed controller is concluded.

scholarly journals On the significance of the noise model for the performance of a linear MPC in closed-loop operation

2016 ◽  
Vol 49 (7) ◽  
pp. 171-176 ◽  
Author(s):  
Morten Hagdrup ◽  
Dimitri Boiroux ◽  
Zeinab Mahmoudi ◽  
Henrik Madsen ◽  
Niels Kjølstad Poulsen ◽  
...  
Keyword(s):  
Closed Loop ◽  
Noise Model

Closed-loop identification: the role of the noise model and prefilters

1995 ◽  
Vol 5 (3) ◽  
pp. 163-171 ◽  
Author(s):  
J.F. MacGregor ◽  
D.T. Fogal
Keyword(s):  
Closed Loop ◽  
Noise Model ◽  
Closed Loop Identification

An Infinite Model Predictive Controller for Multi Input Nonlinear Processes

2017 ◽  
Author(s):  
Ma’moun Abu-Ayyad ◽  
Abdelkader Abdessameud ◽  
Issam Abu-Mahfouz
Keyword(s):  
Closed Loop ◽  
Nonlinear Functions ◽  
Model Predictive Controller ◽  
Nonlinear Characteristics ◽  
Loop Control ◽  
Dynamic Matrix ◽  
New Strategy ◽  
Predictive Controller ◽  
Process Gain ◽  
Infinite Model

This paper presents a novel algorithm of an infinite model predictive controller for controlling nonlinear multi-input multi-output (MIMO) processes. The new strategy uses a set of continuous nonlinear functions that captures the nonlinear characteristics of the MIMO plant over a wide operating range resulting in a more accurate prediction of the controlled variables. The method formulates a nonlinear dynamic matrix that is manipulated variable dependent during closed-loop control. The proposed algorithm was implemented on a nonlinear MIMO thermal system comprising of three temperature zones to be controlled with interacting effects. The experimental closed-loop responses of the proposed algorithm were compared to a multi-model dynamic matrix controller (DMC) with improved results for various setpoint trajectories. The MIMO process has nonlinear parameters such as process gain and time constant that are dependent on the size of the control actions. Good disturbance rejection was attained resulting in improved tracking of multi-setpoint profiles in comparison to multi-model DMC.

New closed-loop on-line identification technique for updating the dynamic matrix

2001 ◽  
Vol 34 (25) ◽  
pp. 329-334
Author(s):  
Eduardo Shigueo Hori ◽  
Wu Hong Kwong
Keyword(s):  
Closed Loop ◽  
Dynamic Matrix ◽  
Line Identification ◽  
Identification Technique ◽  
On Line
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