The paper presents a synchronous control scheme for a mechanically coupled dual ball screw system applied to wave makers driven by multiple servomotor/ball screw units or machine tools such as those of the gantry type. The hardware system is first established and modelled using a system identification approach. The controller is then designed with pseudo derivative feedback feedforward (PDFF) c...

We consider an open-loop system of a fourth order Schrödinger equation with variable coefficients and Neumann boundary control and collocated observation. Using the multiplier method on Riemannian manifold we show that that the system is well-posed in the sense of Salamon. This implies that the exponential stability of the closed-loop system under the direct proportional output feedback control...

In this paper, a new guidance law is designed to improve the performance of a homing missiles guidance system in terminal phase. For this purpose first of all, the two dimensions equations of motion are formulated, then the approximation dynamic of missile control loop is added to these equations which are nonlinear whit unmatched uncertainty. Then, a new adaptive back-stepping method is develo...

-A mixed sensitivity H control methodology is tested on a Three-Tank-System laboratory prototype. The methodology is based on a stable precompensator and its dual post-compensator which allows to solve a mixed sensitivity problem. Frequency responses show that it is possible to shape the open loop transfer function by the control parameters. Time responses are given under flow leak, close conne...

This article describes a dual-controller dual-delay line delay lock loop (DC-DL DLL). The proposed DLL adopted dual structure, each was composed of coarse adjustment and fine unit, the lines had corresponding control units to reduce mismatch between lines, it avoided complicated design duty cycle correction (DCC) circuit. A frequency divider added divide input clock achieve wider adjustment. Ad...

We further discuss a rotating dual giant Wilson loop (D3-brane) solution constructed in Lorentzian AdS by Drukker et al. The solution is shown to be composed of a dual giant Wilson loop and a dual giant graviton by minutely examining its shape. This observation suggests that the corresponding gauge-theory operator should be a k-th symmetric Wilson loop with the insertions of dual giant graviton...