The article describes the design of a force controller for a position-based manipulator with arbitrary dead-time applying Kalman Active Observers. The design is based on pole placement using discrete state space theory. An active state variable is introduced to compensate non linearities and parameter variations during the control process. Only the output of the plant is measured. All the discr...

INTRODUCTION Precision positioning systems are essential in precision industry. These positioning systems often have one or more elements that introduce friction. Friction is well known to cause steadystate errors and limit cycles, and to slow the motion of the mechanism. Thus, it is important to consider friction compensation in controller design. Simple controllers like PID controllers do not...

in spark ignition (si) engines, the accurate control of air fuel ratio (afr) in the stoichiometric value is required to reduce emission and fuel consumption. the wide operating range, the inherent nonlinearities and the modeling uncertainties of the engine system are the main difficulties arising in the design of afr controller. in this paper, an optimization-based nonlinear control law is anal...

In this paper, variable gain nonlinear PD and PI fuzzy logic controllers are designed the effect of characteristic these is analyzed to show its contribution in enhancing performance closed loop system over a conventional linear PID controller. Simulation results time domain characteristics how outperform controller when used control plant that has delay.

In this paper, the optimal design of supplementary controller parameters of a unified powerflow controller(UPFC) for damping low-frequency oscillations in a weakly connected systemis investigated. The individual design of the UPFC controller, using hybrid particle swarmoptimization and gravitational search algorithm (PSOGSA)technique under 3 loadingoperating conditions, is discussed. The effect...

This paper proposes developed method to design a digital fuzzy logic controller with the aid of conventional Proportional – integral – derivative (PID) controller using field programmable gate array (FPGA). The method used to design a PID Fuzzy Logic controller is to design it as Proportional – derivative Fuzzy Logic controller (PDFLC) and Proportional –integral fuzzy logic controller (PIFLC) c...