Parisa Kaveh | SDSU - Academia.edu (original) (raw)
Papers by Parisa Kaveh
Lecture Notes in Control and Information Sciences, 2000
Abstract: Diabetes is a serious disease during which the body's production and use of insulin is ... more Abstract: Diabetes is a serious disease during which the body's production and use of insulin is impaired, causing glucose concentration level to increase in the bloodstream. The blood glucose dynamics is described using the Bergman minimal model. Higher order sliding mode control techniques, including the prescribed convergence law, the smooth second order, the quasi-continuous, and the super-twisting control algorithm, are studied for the double loop robust stabilization of the glucose concentration level of a diabetic patient in presence of the parameter variations and meal disturbance. In the inner loop supertwisting control stabilizes the glucose pump-actuator that yields a dynamical collapse of the loop. In the outer loop the higher order sliding mode controller generates a command to the pump-actuator in terms of insulin injection rate. The higher order sliding mode differentiator is employed to facilitate the controllers. The efficiency of the proposed controllers and observers/differentiators, i.e. robustness and high accuracy, in presence of physical disturbances like food intake and parametric uncertainties is confirmed via simulations. Two sampling rates are successfully employed in the simulations: a smaller one for the system and the controller and the larger one for the glucose sensor.
Higher order sliding mode control technique, in specific super-twisting algorithm, is used as a b... more Higher order sliding mode control technique, in specific super-twisting algorithm, is used as a better alternative to robustly stabilize the blood glucose concentration level of a diabetic patient in presence of the parameter variations and meal disturbance. The super-twisting algorithm is employed to eliminate the effect of chattering and obtain continuous control. The structure of the proposed sliding mode controller is appropriate in making the insulin delivery pumps in closed loop control of diabetes. A computer simulation is performed to manifest the theoretical analysis. The behavior of the patient's closed loop model in presence of physical disturbances like food intake has been checked via simulations
Thesis (M.S.E.) -- University of Alabama in Huntsville, 2004. Typescript (photocopy) Includes bib... more Thesis (M.S.E.) -- University of Alabama in Huntsville, 2004. Typescript (photocopy) Includes bibliographical references (p. 80-81)
Proceedings of the Annual Southeastern Symposium on System Theory, 2005
AbsfruciSliding Mode Control technique, including recently developed Integral Sliding Mode Contro... more AbsfruciSliding Mode Control technique, including recently developed Integral Sliding Mode Control, is used to robustly stabilize the amplitude and frequency of the output of a second-order Harmonic Oscillator system. It is shown that the output of the proposed configuration is a sinusoidal signal whose amplitude and frequency are robust to bounded disturbances. The structure of the proposed sliding mode controlled oscillator is appropriate to generate IOW frequency sinusoidal oscillations. A computer simulation is performed to manifest the theoretical analysis.
International Workshop on Variable Structure Systems, 2006. VSS'06., 2006
Diabetes is discussed as a serious condition in which the body's production and use of insulin is... more Diabetes is discussed as a serious condition in which the body's production and use of insulin is impaired, causing glucose concentration level to increase in the bloodstream. In this paper, higher order sliding mode control technique, in specific super-twisting algorithm, is used to robustly stabilize the glucose concentration level of a diabetic patient in presence of the parameter variations and meal disturbance. The super-twisting algorithm is employed to attenuate the effect of chattering and obtain continuous control. The structure of the proposed sliding mode controller is appropriate for making the insulin delivery pumps in closed loop control of diabetes. A computer simulation is performed to manifest the theoretical analysis. The efficiency of the proposed controller i.e. robustness and high accuracy, in presence of physical disturbances like food intake is verified via simulations.
Proceedings of the 44th IEEE Conference on Decision and Control, 2005
A typical second order Harmonic Oscillator is controlled using both traditional and higher order ... more A typical second order Harmonic Oscillator is controlled using both traditional and higher order Sliding Mode Control (SMC). Integral sliding mode control is used to compensate for the bounded disturbances improving the robustness of the controlled Harmonic Oscillator. The advantages of the higher order SMC over the traditional one i.e., control continuity and improved accuracy are shown. A computer simulation
Journal of the Franklin Institute, 2009
To stabilize both amplitude and frequency of the second-order harmonic oscillator double-fold sli... more To stabilize both amplitude and frequency of the second-order harmonic oscillator double-fold sliding mode control is employed. The first, integral sliding mode control, is used to compensate for the disturbance/uncertainty, which is unmatched by the second control. The second sliding mode control is designed to achieve the stabilization of the harmonic oscillator system while the system is in the integral
International Journal of Robust and Nonlinear Control, 2008
Diabetes is discussed as a serious condition in which the body's production and use of insulin ar... more Diabetes is discussed as a serious condition in which the body's production and use of insulin are impaired, causing glucose concentration level to increase in the bloodstream. In this paper, higher-order sliding mode control techniques, in specific prescribed convergence law, quasi-continuous and super-twisting control algorithms, are used to robustly stabilize the glucose concentration level of a diabetic patient in presence of the parameter variations and meal disturbance. The structure of the proposed higher-order sliding mode controllers is appropriate for making the insulin delivery pumps in closed-loop control of diabetes. A computer simulation is performed to manifest the theoretical analysis. The super-twisting algorithm is employed to attenuate the effect of chattering and obtain continuous control in the simulations. The efficiency of the proposed controller, i.e. robustness and high accuracy, in presence of physical disturbances like food intake and parametric uncertainties is verified via simulations.
IEEE Transactions on Circuits and Systems I: Regular Papers, 2004
A new technique of arbitrary waveform direct digital frequency synthesis (DDFS) is introduced. In... more A new technique of arbitrary waveform direct digital frequency synthesis (DDFS) is introduced. In this method, one period of the desired periodic waveform is divided into m sections, and each section is approximated by a series of Chebyshev polynomials up to degree d. By expanding the resultant Chebyshev polynomials, a power series of degree d is produced. The coefficients of
Lecture Notes in Control and Information Sciences, 2000
Abstract: Diabetes is a serious disease during which the body's production and use of insulin is ... more Abstract: Diabetes is a serious disease during which the body's production and use of insulin is impaired, causing glucose concentration level to increase in the bloodstream. The blood glucose dynamics is described using the Bergman minimal model. Higher order sliding mode control techniques, including the prescribed convergence law, the smooth second order, the quasi-continuous, and the super-twisting control algorithm, are studied for the double loop robust stabilization of the glucose concentration level of a diabetic patient in presence of the parameter variations and meal disturbance. In the inner loop supertwisting control stabilizes the glucose pump-actuator that yields a dynamical collapse of the loop. In the outer loop the higher order sliding mode controller generates a command to the pump-actuator in terms of insulin injection rate. The higher order sliding mode differentiator is employed to facilitate the controllers. The efficiency of the proposed controllers and observers/differentiators, i.e. robustness and high accuracy, in presence of physical disturbances like food intake and parametric uncertainties is confirmed via simulations. Two sampling rates are successfully employed in the simulations: a smaller one for the system and the controller and the larger one for the glucose sensor.
Higher order sliding mode control technique, in specific super-twisting algorithm, is used as a b... more Higher order sliding mode control technique, in specific super-twisting algorithm, is used as a better alternative to robustly stabilize the blood glucose concentration level of a diabetic patient in presence of the parameter variations and meal disturbance. The super-twisting algorithm is employed to eliminate the effect of chattering and obtain continuous control. The structure of the proposed sliding mode controller is appropriate in making the insulin delivery pumps in closed loop control of diabetes. A computer simulation is performed to manifest the theoretical analysis. The behavior of the patient's closed loop model in presence of physical disturbances like food intake has been checked via simulations
Thesis (M.S.E.) -- University of Alabama in Huntsville, 2004. Typescript (photocopy) Includes bib... more Thesis (M.S.E.) -- University of Alabama in Huntsville, 2004. Typescript (photocopy) Includes bibliographical references (p. 80-81)
Proceedings of the Annual Southeastern Symposium on System Theory, 2005
AbsfruciSliding Mode Control technique, including recently developed Integral Sliding Mode Contro... more AbsfruciSliding Mode Control technique, including recently developed Integral Sliding Mode Control, is used to robustly stabilize the amplitude and frequency of the output of a second-order Harmonic Oscillator system. It is shown that the output of the proposed configuration is a sinusoidal signal whose amplitude and frequency are robust to bounded disturbances. The structure of the proposed sliding mode controlled oscillator is appropriate to generate IOW frequency sinusoidal oscillations. A computer simulation is performed to manifest the theoretical analysis.
International Workshop on Variable Structure Systems, 2006. VSS'06., 2006
Diabetes is discussed as a serious condition in which the body's production and use of insulin is... more Diabetes is discussed as a serious condition in which the body's production and use of insulin is impaired, causing glucose concentration level to increase in the bloodstream. In this paper, higher order sliding mode control technique, in specific super-twisting algorithm, is used to robustly stabilize the glucose concentration level of a diabetic patient in presence of the parameter variations and meal disturbance. The super-twisting algorithm is employed to attenuate the effect of chattering and obtain continuous control. The structure of the proposed sliding mode controller is appropriate for making the insulin delivery pumps in closed loop control of diabetes. A computer simulation is performed to manifest the theoretical analysis. The efficiency of the proposed controller i.e. robustness and high accuracy, in presence of physical disturbances like food intake is verified via simulations.
Proceedings of the 44th IEEE Conference on Decision and Control, 2005
A typical second order Harmonic Oscillator is controlled using both traditional and higher order ... more A typical second order Harmonic Oscillator is controlled using both traditional and higher order Sliding Mode Control (SMC). Integral sliding mode control is used to compensate for the bounded disturbances improving the robustness of the controlled Harmonic Oscillator. The advantages of the higher order SMC over the traditional one i.e., control continuity and improved accuracy are shown. A computer simulation
Journal of the Franklin Institute, 2009
To stabilize both amplitude and frequency of the second-order harmonic oscillator double-fold sli... more To stabilize both amplitude and frequency of the second-order harmonic oscillator double-fold sliding mode control is employed. The first, integral sliding mode control, is used to compensate for the disturbance/uncertainty, which is unmatched by the second control. The second sliding mode control is designed to achieve the stabilization of the harmonic oscillator system while the system is in the integral
International Journal of Robust and Nonlinear Control, 2008
Diabetes is discussed as a serious condition in which the body's production and use of insulin ar... more Diabetes is discussed as a serious condition in which the body's production and use of insulin are impaired, causing glucose concentration level to increase in the bloodstream. In this paper, higher-order sliding mode control techniques, in specific prescribed convergence law, quasi-continuous and super-twisting control algorithms, are used to robustly stabilize the glucose concentration level of a diabetic patient in presence of the parameter variations and meal disturbance. The structure of the proposed higher-order sliding mode controllers is appropriate for making the insulin delivery pumps in closed-loop control of diabetes. A computer simulation is performed to manifest the theoretical analysis. The super-twisting algorithm is employed to attenuate the effect of chattering and obtain continuous control in the simulations. The efficiency of the proposed controller, i.e. robustness and high accuracy, in presence of physical disturbances like food intake and parametric uncertainties is verified via simulations.
IEEE Transactions on Circuits and Systems I: Regular Papers, 2004
A new technique of arbitrary waveform direct digital frequency synthesis (DDFS) is introduced. In... more A new technique of arbitrary waveform direct digital frequency synthesis (DDFS) is introduced. In this method, one period of the desired periodic waveform is divided into m sections, and each section is approximated by a series of Chebyshev polynomials up to degree d. By expanding the resultant Chebyshev polynomials, a power series of degree d is produced. The coefficients of