Aiming to the effect of hysteresis characteristics of giant magnetostrictive materials on the giant magnetostrictive actuator, the actuator’s model is divided into four separate segments. Then, based on the Preisach theory, a model which can describe hysteresis characteristics for the actuator is established. Based on this, feedforward is combined with feedback, and a PID closed-loop feedback c...

We studied the circuitry that underlies the behavior of the local edge detector (LED) retinal ganglion cell in rabbit by measuring the spatial and temporal properties of excitatory and inhibitory currents under whole cell voltage clamp. Previous work showed that LED excitation is suppressed by activity in the surround. However, the contributions of outer and inner retina to this characteristic ...

In this paper, we consider the output regulation problem of a class of linear switched multi-agent systems. The problem can be viewed as a generalization of several control problems of the multi-agent systems. Due to the limited information exchanges of different subsystems, the problem does not permit a centralized approach. By devising a distributed observer, we can solve the problem by both ...

This paper presents a quasi-static model and a control strategy for N robot arms cooperating through a concerning its compliant behaviour partly unknown exible object. The control strategy is based on the position/force decomposition of an extended 6N-dimensionalspace. The strategy includes feedforward and feedback levels. The feedback level is organized in the form of an active compliance cont...

In This paper we investigate the design of controllers, for discrete-time Markovian jump linear systems, that achieve optimal reference tracking in the presence of preview. In particular, given a reference sequence, we obtain the optimal control law for the fully observed case, while the output feedback case is also briefly discussed. We provide the optimal control law for the infinite and fini...

In this paper feedforward controller is designed to eliminate nonlinear hysteresis behaviors of a piezoelectric stack actuator (PSA) driven system. The control design is based on inverse Prandtl-Ishlinskii (P-I) hysteresis model identified using particle swarm optimization (PSO) technique. Based on the identified P-I model, both the inverse P-I hysteresis model and feedforward controller can be...

This paper presents an overall control scheme for wide-range multiobjective-optimal operation of a fossil-fuel power unit. The scheme provides the means to accommodate operating scenarios characterized by multiple operating requirements, and to attain optimal operation along any arbitrary unit load-demand pattern. The proposed strategy builds upon current coordinated control schemes, which typi...

The most popular way to improve consumers’ control over their electricity cost is by providing frequent and detailed feedback with “in-home displays” (IHD). In this study, we examined alternative ways to train experimental participants to control and optimize their use of electricity by “feedforward” training to map energy consuming behaviors to costs. The participants were trained in one of fo...