Distributed LPV State-Feedback Control Under Control Input Saturation

2017 ◽  
Vol 62 (5) ◽  
pp. 2450-2456 ◽  
Author(s):  
Azita Dabiri ◽  
Balazs Kulcsar ◽  
Hakan Koroglu
Keyword(s):  
Feedback Control ◽  
State Feedback ◽  
Input Saturation ◽  
State Feedback Control ◽  
Control Input

Human Postural Feedback Response Described by Eigenvector

2006 ◽  
Vol 326-328 ◽  
pp. 739-742 ◽  
Author(s):  
Se Young Kim ◽  
Suk Yung Park
Keyword(s):  
Feedback Control ◽  
State Feedback ◽  
State Feedback Control ◽  
Joint Torque ◽  
Modal Control ◽  
Control Input ◽  
Postural Responses ◽  
Control Gain ◽  
Full State ◽  
Full State Feedback

Human postural responses appeared to have stereotyped modality, such as ankle mode, knee mode, and hip mode in response to various levels of postural challenges. We examined whether human postural control gain of full-state feedback could be decoupled along with the eigenvectors. To verify the model, postural responses subjected to fast backward perturbation were used. Upright posture was modeled as 3-segment inverted pendulum incorporated with linear feedback control, and joint torques were calculated using inverse dynamics. Postural modalities, such as ankle, knee and hip mode, were obtained from eigenvectors of biomechanics model. As oppose to the full-state feedback control, independent modal control assumes that modal control input is determined by the linear combinations of corresponding modality. We used linear regression to obtain and compare the feedback gains for both eigenvector control gain and full-state feedback. As a result, we found that both feedback gains of two control models that fit the joint torque data are reasonably closed each other especially at the joint angle feedback gains. This implies that the simple parameterization using eigenvectors may be used to correlate the feedback gains of full-state feedback control.

scholarly journals State-Feedback Control for Fractional-Order Nonlinear Systems Subject to Input Saturation

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Junhai Luo
Keyword(s):  
Feedback Control ◽  
Nonlinear Systems ◽  
Fractional Order ◽  
State Feedback ◽  
Control Method ◽  
Input Saturation ◽  
State Feedback Control ◽  
Sufficient Condition ◽  
Feedback Control Method ◽  
Linear State

We give a state-feedback control method for fractional-order nonlinear systems subject to input saturation. First, a sufficient condition is derived for the asymptotical stability of a class of fractional-order nonlinear systems. Then based on Gronwall-Bellman lemma and a sector bounded condition of the saturation function, a linear state-feed back controller is designed. Finally, two simulation examples are presented to show the validity of the proposed method.

scholarly journals H∞ State-Feedback Control For Coupled Differential-Difference T-S fuzzy Systems with Input Saturation

2021 ◽  
Vol 54 (18) ◽  
pp. 12-17
Author(s):  
Tiantian Xia ◽  
Baoyong Zhang ◽  
Yongmin Li ◽  
Mingcheng Dai
Keyword(s):  
Feedback Control ◽  
Fuzzy Systems ◽  
State Feedback ◽  
Input Saturation ◽  
State Feedback Control
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