Optimization of a magnetic actuator with Taguchi method and multivariate analysis method

Fusayasu, H.; Yokota, Yasuhiro; Iwata, Y.; Inoue, H.

doi:10.1109/20.706829

Cited by 23 publications

(12 citation statements)

References 1 publication

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“…Linear acceleration sensitivity is governed by following equation: (1) where is the effective magnetic flux density, is the effective active length of the wire in each turn of the coils, is the total length of the wire in each turn of the coils, is the 0018-9464/04$20.00 © 2004 IEEE mass of the moving part, is the resistance per meter of the coils. Angular acceleration sensitivity is governed by the equation (2) where is the arm from the rotating center of the moving part to the equivalent acting point of the Lorentz force in the focusing direction, and is the mass moment of inertia of the moving part.…”

Section: Performance Calculationmentioning

confidence: 99%

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Optimizing a Radial Tilt Controllable Slim Actuator With a PCB Lens Holder

Huang

2004

IEEE Trans. Magn.

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Section: Performance Calculationmentioning

confidence: 99%

“…Second, a tilt-controllable function should be fulfilled, especially for high-density storage drives. There were many designs done to meet these requirements [1]- [4]. It, however, is a challenge to design a pickup head that has good dynamic performance and tilt-controllable function in a shrunk size.…”

Section: Introductionmentioning

confidence: 99%

Optimizing a Radial Tilt Controllable Slim Actuator With a PCB Lens Holder

Huang

2004

IEEE Trans. Magn.

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“…Taguchi method or the design of experiments (DOE) have been applied frequently such as for maximizing driving force of a linear type ODD actuator (Fusayasu et al 1998), the uniformity of the magnetic field of a slim type CD/DVD actuator (Ke et al 2002) and improving dynamic performance (Kim et al 1999). Topology optimization method, suggested by Bendsøe and Kikuchi (1988) in structural design, has been also applied in magnetic fields (Dick andLowther 1997 andHong 2004).…”

Section: Introductionmentioning

confidence: 99%

Design of swing arm type actuators considering thermal and dynamic characteristics

et al. 2006

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The present state of the design of swing arm actuators for optical disc drives is to obtain the highly efficient dynamic characteristics within a very compact volume. As a necessary consequence, the need of the small form factor (SFF) storage device has arisen as a major interest in the information storage technology. Due to the size constraint, the thermal stability of the optical pick-up head is important: therefore, the actuator is designed to emit the heat, which is generated by the optical pick-up, along the structural body easily. In this paper, we suggest the miniaturized swing arm type actuator that has effective heat emission quality as well as satisfies the dynamic requirements for the SFF optical disk drive (ODD). The actuator is targeted to be installed in CF-II card size drive to be competitive with flash memory or mini hard disk drive used in mobile electric devices; therefore the dimension of the actuator is required as 11.0 mm · 2.5 mm · 25.0 mm (width · height · length). Because of its small size, the dynamic requirements are severe to ensure the enough gain-margin for the system control together with satisfying the DC/AC sensitivity conditions. Moreover, due to the small size, the maximum pick-up temperature is critical in design because the system has high possibility to reach the shut-down temperature. For the operating mechanism, it uses a tracking electromagnetic (EM) circuit for the focusing motion together and the initial model is designed and promoted by the design of experiments (DOE) only considering the dynamic characteristics. New concept design is suggested based on the topology optimization method considering the thermal conductivity. Furthermore, the new design is modified by DOE to maintain the high sensitivity and to have wide control bandwidth and decreasing mass and inertia. The final design of a swing arm type actuator for SFF ODD is suggested and its dynamic characteristics are verified.

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“…Recently, topology optimization has been used to improve the dynamic characteristics of the suspensions for HDD limited only for maximizing the eigen-frequency considering the mode-shift (Pan et al 2002). On the contrary, the sensitivity analysis , the design of experiments (DOE), and the Taguchi method (Lee et al 2005;Fusayasu et al 1998) have been frequently used for the actuator design in ODD. Generally, the optimal topology for maximizing compliance reduces the structural stiffness (Nishiwaki et al 2001).…”

Section: Introductionmentioning

confidence: 99%

Topology optimization of a swing arm type actuator using the response surface method

Yoo

Lee

2006

Microsyst Technol

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In the frame of topology optimization, the multi-objective ability has to be considered since structural design is usually required to satisfy more than one requirement. A modified topology optimization method based on the response surface method (RSM) is proposed to generate a structure of a small form factor (SFF) swing arm type actuator satisfying maximum compliance and maximum stiffness at the same time using the multi-objective optimization approach. The multi-objective function is defined to maximize the compliance in the direction of focusing as well as the eigen-frequency of the structure. The design of experiments (DOE) is performed to select sensitive variables. Based on DOE results, the response surface functions are formulated to construct the multi-objective function. The weight factors between conflicting objective functions are determined by the Pareto optimum method. By applying the optimal combination of design variables to the design domain, the optimized topology can be obtained.

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Optimization of a magnetic actuator with Taguchi method and multivariate analysis method

Cited by 23 publications

References 1 publication

Optimizing a Radial Tilt Controllable Slim Actuator With a PCB Lens Holder

Optimizing a Radial Tilt Controllable Slim Actuator With a PCB Lens Holder

Design of swing arm type actuators considering thermal and dynamic characteristics

Topology optimization of a swing arm type actuator using the response surface method

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