Improving the read/write performance of hard disk drives under external excitation sources based on multi-objective optimization

Rahmati, Mehdi; Alavi, Seyed Rashid; Ziaei-Rad, Saeed

doi:10.1007/s00542-016-3131-9

Cited by 13 publications

(1 citation statement)

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“…Schaffer [15] proposed the use of a genetic algorithm to solve the problem of objective optimization. Rahmati et al [16] designed a nonlinear objective optimization method to enhance the passive control performance of rubbers by minimizing the destructive effects of shock and random excitations. By analyzing the influence of the initial load stiffness acting on the loading effect, the loading parameters must be optimized to obtain the best working results.…”

Section: Introductionmentioning

confidence: 99%

The Stiffness Calculation and Optimization for the Variable Stiffness Load Torque Simulation System

Yao

Zhou

2017

International Journal of Aerospace Engineering

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This paper presents a novel design for a variable stiffness load torque simulation system. The system is applied to the load torque on a rudder in a real-time hardware-in-the-loop system (HILS). Compared with the traditional loading method, in which unavoidable additional torque exists, the variable stiffness loading system employs a "first decomposed and then coupled" approach to output the load torque and to significantly reduce the additional torque. Based on experimental data obtained from a wind tunnel test, a calculation method is proposed to determine the loading parameters of the variable stiffness loading system. Since the load stiffness is related to a variety of factors, the stiffness values obtained from wind tunnel test data, such as the fixed Mach number and the rudder deflection angle, are not definite values. By analyzing the influencing factors of the loading parameters, an optimal set of load stiffness is obtained using an optimization algorithm, and exact tracking of the load torque is achieved. Using the calculation method to obtain a loading torque for the rudder as an example, the torque tracking error is less than 0.05 Nm. The simulation results indicate that the proposed calculation method for variable stiffness loading is effective.

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Section: Introductionmentioning

confidence: 99%