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This brief investigates optimal reset law design of reset control systems with fixed reset time instants. First, closed-loop reset control systems are changed to discrete-time linear control systems with reset values as control inputs. Then the optimal reset law design problems are transferred to linear quadratic regulation problems and the optimal reset laws are then obtained by solving algebraic...
The applications of HDD in mobile and compact devices pose higher requirement on the vibration rejection capability of HDD servo control. A novel vibration suppression method is proposed in this paper. It is not model based, so it is less sensitive to the variation of the plan parameters. It avoids obtaining disturbance observation by differentiation of position signal. It is an add-on feedforward...
This paper proposes a design method of discrete-time reset control systems with the reset time instants prespecified. With a base linear system designed conventionally, the discrete-time reset law design aims at improving the system transient responses. The design method can guarantee the system stability and the solution of the controller is obtained by solving Riccati equations. The proposed reset...
This paper investigates stability analysis and design of reset control systems of which the reset times are pre-specified. Firstly, in order to testify stability of reset control systems, we propose an approach which does not rely on the stability of base linear systems. Based on this, some Lie-algebraic conditions are also obtained. Then, we develop a method of reset law design which aims at improving...
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