This paper investigates the distributed adaptive PI consensus tracking control for output-constrained nonlinear multiagent systems (MASs) with unknown directions and time-varying actuator faults under directed graph. Firstly, an auxiliary filter network is constructed to estimate output of leader. Then, by introducing a state transformation function, asymmetric constraints on agents’ outputs ca...

In this paper a PI based adaptive control system is developed to control an organic Rankine cycle power plant. In particular, the control of the turbine speed during the transient between the normal operation mode of the system (connected to the grid) and the islandmode (connected to a stand-alone load) is of main concern. A control algorithm suitable for the implementation on a programmable lo...

A DSP-based self-adaptive proportional-integral (PI) controller to control a DC-DC converter is proposed in this paper. Full-bridge topology is adopted here to obtain higher power output capability and higher conversion efficiency. The converter adopts zero-voltage-switching (ZVS) technique to reduce conduction losses. A parallel secondary active clamp circuit is added to deal with voltage over...

Abstract: In this paper a new adaptive control algorithm is presented for unknown nonlinear and non-Gaussian stochastic systems. The method combines the minimum entropy control with an Iterative Learning Control (ILC) framework, where the control horizon is divided into a number of time-domain intervals called Batches. Within each batch a PI controller is used to control the plant so as to achi...

Postoperative hypertension is common among cardiac patients. Intensive care by medical personnel is necessary to avoid complication due to elevated blood pressure after operation. Automatic adaptive drug delivery control system is designed to effectively inject vasodilator drug into patient’s cardiovascular system to reduce elevated blood pressure. The mentioned vasodilator drug used is sodium ...

This paper presents an original variable gain PI (VGPI) controller for speed control of a direct torque neuro fuzzy controlled (DTNFC) induction motor drive. First, a VGPI speed controller is designed to replace the classical PI controller in a conventional direct torque controlled induction motor drive. Its simulated performances are then compared to those of a classical PI controller. Then, a...

This paper presents the indirect field vector control of induction motor (IM) which is controlled by an adaptive Proportional-Integral (PI) speed controller. The proposed solution can overcome rotor resistance variation, degrades performance control. To solve this drawback, PI controller designed with gains adaptation based on fuzzy logic in order to improve performances IM respect parameters v...