Topology design to improve HDD suspension dynamic characteristics

In this paper, topology optimization in design of suspensions for high-density magnetic recording systems is studied. With the development of higher data density and the faster data streaming, a hard-disk drive (HDD) is required to move faster with greater positioning accuracy. At this situation, even small mechanical vibration induced by seeking motion may result in error in data reading. According to the operational characteristics of HDD suspension, the present work is focused on the topology design of HDD suspension for the dynamic shock response problem. As a result of this research, several new topological structures of HDD suspension are obtained, which are largely different from previous work, and dynamic response under shock force and stability of passive structure are also improved.

[1]  M. Beckers,et al.  Topology optimization using a dual method with discrete variables , 1999 .

[2]  Gih-Keong Lau,et al.  On optimal design of HDD suspension using topology optimization , 2002 .

[3]  Zheng-Dong Ma,et al.  Development of new mode-superposition technique for truncating lower- and/or higher-frequency modes: (application to eigenmode sensitivity analysis) , 1994 .

[4]  Yee-Pien Yang,et al.  Multiobjective optimization of hard disk suspension assemblies: Part I—structure design and sensitivity analysis , 1996 .

[5]  Frank E. Talke,et al.  Suspension modeling and optimization using finite element analysis , 2003 .

[6]  N. Kikuchi,et al.  Topological design for vibrating structures , 1995 .

[7]  Yi-An Chen,et al.  Multiobjective optimization of hard disk suspension assemblies: Part II—integrated structure and control design , 1996 .

[8]  K. Svanberg.  The method of moving asymptotes—a new method for structural optimization , 1987 .

[9]  Optimal design of suspensions for high-density magnetic recording systems , 2002 .

[10]  M. Athans,et al.  On the determination of the optimal constant output feedback gains for linear multivariable systems , 1970 .

[11]  Pierre Duysinx,et al.  Dual approach using a variant perimeter constraint and efficient sub-iteration scheme for topology optimization , 2003 .

[12]  Mathias Stolpe,et al.  On Models and Methods for Global Optimization of Structural Topology , 2003 .

[13]  Gih Keong Lau,et al.  Improved mechanical designs for HDD , 2002, Digest of the Asia-Pacific Magnetic Recording Conference.

[14]  J. Petersson,et al.  Numerical instabilities in topology optimization: A survey on procedures dealing with checkerboards, mesh-dependencies and local minima , 1998 .

[15]  Richard Bellman,et al.  Introduction to Matrix Analysis , 1972 .