scholarly journals Optimal linear–quadratic control of asymptotically stabilizable systems using approximations

2020 ◽  
Vol 146 ◽  
pp. 104802
Author(s):  
Hans Zwart ◽  
Kirsten A. Morris ◽  
Orest V. Iftime
Keyword(s):  
Linear Quadratic Control ◽  
Linear Quadratic ◽  
Optimal Linear

scholarly journals Optimal linear quadratic control for wireless sensor and actuator networks with random delays and packet dropouts

2018 ◽  
Vol 14 (6) ◽  
pp. 155014771877956
Author(s):  
Zhuwei Wang ◽  
Lihan Liu ◽  
Chao Fang ◽  
Xiaodong Wang ◽  
Pengbo Si ◽  
...  
Keyword(s):  
Frequency Control ◽  
Optimal Solution ◽  
Load Frequency Control ◽  
Wireless Sensor ◽  
Linear Quadratic Control ◽  
Linear Quadratic ◽  
Relay Nodes ◽  
Packet Dropouts ◽  
Frequency Control System ◽  
Optimal Linear

In this article, the optimal linear quadratic control problem is considered for the wireless sensor and actuator network with stochastic network-induced delays and packet dropouts. Considering the event-driven relay nodes, the optimal solution is obtained, which is a function of the current plant state and all past control signals. It is shown that the optimal control law is the same for all locations of the controller placement. Since the perfect plant state information is available at the sensor, the optimal controller should be collocated with the sensor. In addition, some issues such as the plant state noise and suboptimal solution are also discussed. The performance of the proposed scheme is investigated by an application of the load frequency control system in power grid.

scholarly journals Modeling and Speed Tuning of a PMSM with Presence of Fissure Using Dragonfly Algorithm

2020 ◽  
Vol 10 (24) ◽  
pp. 8823
Author(s):  
Omar Aguilar-Mejía ◽  
Abraham Manilla-García ◽  
Ivan Rivas-Cambero ◽  
Hertwin Minor-Popocatl
Keyword(s):  
Control Method ◽  
Fault Tolerant ◽  
Permanent Magnet Synchronous Motor ◽  
Linear Quadratic Control ◽  
Linear Quadratic ◽  
Search Range ◽  
Trajectory Tracking Control ◽  
Dragonfly Algorithm ◽  
Optimal Linear ◽  
Motor Operation

This paper presents a robust trajectory tracking control for a Permanent Magnet Synchronous Motor (PMSM) with consideration a fault, parametric uncertainties and external disturbances by effectively integrating robust optimal linear quadratic control. One kind of fault is considered in the machine, particularly the presence of fissure rotor. The dynamic model of the PMSM with the presence of fissure presents highly non-linear behaviors, which means that tuning is quite complicated, which the tuning was chosen through swarm intelligence optimization (Dragonfly Algorithm). A sensitivity analysis is carried out, in order to limit the search range to minimize the evaluation time. This methodology was used to diminish these defects during motor operation. Simulation results show that the optimal linear quadratic control method has a robust fault-tolerant performance.

Optimal linear–quadratic control of coupled parabolic–hyperbolic PDEs

2016 ◽  
Vol 90 (10) ◽  
pp. 2152-2164 ◽  
Author(s):  
I. Aksikas ◽  
A. Alizadeh Moghadam ◽  
J. F. Forbes
Keyword(s):  
Linear Quadratic Control ◽  
Linear Quadratic ◽  
Hyperbolic Pdes ◽  
Optimal Linear

Optimal linear quadratic control in the class of output feedbacks

2007 ◽  
Vol 76 (1) ◽  
pp. 638-640 ◽  
Author(s):  
D. V. Balandin ◽  
M. M. Kogan
Keyword(s):  
Linear Quadratic Control ◽  
Linear Quadratic ◽  
Optimal Linear
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