Some people suffering from diabetes use insulin injection pumps to control the blood glucose level. Sometimes, the fault may occur in the sensor or actuator of these pumps. The main objective of this paper is controlling the blood glucose level at the desired level and fault-tolerant control of these injection pumps. To this end, the eligibility traces algorithm is combined with the sliding mod...

The possibility that a hybrid simulation model can change its state infinitely often in a finite time interval impacts negatively, or even disables, the ability to simulate some hybrid systems. This behavior also known as chattering occurs in models that can switch continuously between different modes of operation. In this paper we provide two solutions to different kinds of chattering behavior...

Considering pitch channel simplified model of missile control system, a VSCL(variable structure control law) is designed by using overload and angle velocity signals. Especially, an analysis is proposed for the situation of equal control with uncertainties. An integral action is introduced to compensate the uncertainties and a soft function is adopted to solve the chattering problem of VSC. Fin...

In conventional sliding-mode control systems, the sliding-mode motion is of reduced order. Two main problems hindering the application of the sliding-mode control are the singularity in terminal slidingmode control systems and the chattering in both the conventional linear sliding-mode and the terminal sliding-mode control systems. This paper proposes a chattering-free full-order terminal-slidi...

Chattering alarms repeatedly make transitions between alarm and non-alarm states without response from operators, and severely deteriorate the performance of industrial alarm systems. Two rules are formulated based on the metrics of alarm durations and intervals to detect chattering alarms caused by random noise and oscillation. An online method is proposed to reduce the number of the chatterin...

This paper discusses a new design of chattering reduction for sliding mode control. Conventionally, a boundary layer around the sliding surface is used to achieve smooth control signals. However, the boundary layer design become in-effective in chattering reduction when there is high-level measurement noise. To solve this problem, this paper proposes a dynamic sliding mode control, which, with ...

in recent years, underactuated nonlinear dynamic systems trajectory tracking, such as space robots and manipulators with structural flexibility, has become a major field of interest due to the complexity and high computational load of these systems. hierarchical sliding mode control has been investigated recently for these systems; however, the instability phenomena will possibly occur, especia...

For the present paper, we developed an output feedback chattering position regulator for n-degreesof-freedom (DOF) robot manipulators with elastic and frictional joints. A stability analysis of the closed-loop dynamic system in question was developed within the framework of Lyapunov functions. Performance issues related to the chattering regulator are illustrated in numerical simulations and ex...

High-gain observers are powerful tools for estimating the state of nonlinear systems. However, their design poses several challenges due to need dealing with phenomena such as peaking and chattering. To address these issues, we propose a differentiator operator based on non linear second order high-gain observer, which is suited class dynamical Our method includes procedure determine high gains...