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The Flying Height Control with a Switched Controller for Data Storage Devices Zhizheng Wu1, Mei Liu1, 2 1Department of Precision Mechanical Engineering, Shanghai University, #149 Yanchang Road, Shanghai, China, 200072 2State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 200050 zhizhengwu@shu.edu.cn, mliu@shu.edu.cn Keywords: flying height control, -parameterized, switched systems Abstract.
This paper considers the flying height control problem for data storage devices using a switched controller.
Finally, the proposed regulator design method is evaluated on an experimental setup motivated by the flying height regulation problem in data storage devices. 1 Introduction The storage density of data storage devices has increased dramatically over the last decade.
The key technology in achieving higher storage density is the reduction of the clearance between the read/write element and the recording medium with a minimization of flying height variations.
Existing results in the literature on the exact output regulation problem for switched systems have been studied under strict assumptions [4-6], which cannot be used directly for the flying height regulation problem in data storage devices where switched (contact) dynamics exist.

(3) Reduction temperature.
Normally, the subsequent reduction temperature of atomized powder is 970 ℃.
Data show that the total oxygen content of ABC100.30 of Höganäs has reached 0.05 % or less.
The nature of reduction is the following equations: H2+O→H2O, H2O+C→H2+CO.
In addition, reduction also helps to reduce the number of crystal grains.

Types of Thermal Insulation Materials and Inventory Data.
Fig. 2.Market share of 7 largest markets for thermal insulation materials The main source of life cycle inventory data for analyzing the inventories was eco invent data v2.2 [23].
Life cycle inventory data of VIP referred to [24].
For example the AIJ database relies on input-output based data, while others are average product data.
Annex Table A shows the data used to create Fig. 6 and Fig. 7.

This phase consists on matching two or more different point clouds into one data set in order to have them share the same global coordinate system.
Finally, we present some experimental data with comparisons for analysis and further discussion about the algorithm’s performance.
As stated earlier, the goal is to find the rigid transformation that aligns two 3D data sets (a and b) in a common coordinate system.
It is important to know that the hardware we have used for data acquisition is not a high end professional 3D scanner; therefore the 3D data may not be of the best quality and was not high resolution.
Fisher, "Parallel evolutionary registration of range data," Comput.

Based on above model, combing with 3D element strength reduction method and strain control criterion, the resist safety degree calculation method for dam shoulder high slope of high arc dam system has been constructed, which can fit the complex geo-mechanical engineering.
The strength reduction calculation method.
The strength reduction calculation method and the stress control criterion are used.
Based on above model, combing with 3D element strength reduction method and strain control criterion, the resist safety degree calculation method for dam shoulder high slope of high arc dam system is proposed.
The results are coincident with the monitoring data and actual experience, and provide valuable theoretical base in the engineering appraisement.

However, pressure has less effect on IFT reduction.
However, at higher temperature, temperature has less effect on IFT reduction.
Fig. 3 The effect of pressure on IFT reduction for temperature at 60°C, 0.075%wt of NaOH and 7500 ppm salinity.
Nevertheless, pressure has less effect on IFT reduction.
The results can be used as fundamental data for the design of the oil production process in Thailand in the future.

Figure 2 shows the CV data for the temperature range between 150 and 250°C.
A transformation of ledge to an inversion layer is observed in the data between 200 and 250°C.
The data in figure 3 show the reduction of fixed oxide charge is reached at temperatures above 300˚C and the observed the flat band shift is now dominated by interfacial traps.
In this high temperature region, the electrons have gained enough thermal energy to form an incomplete inversion layer as highlighted at points B & C in the unilluminated data.
When measured from accumulation to inversion, the capacitance in deep depletion increases after passing through a minimum, as shown by the data in figure 4.

Instead of slicing the model from STL data, this methodology direct slices of CAD models using a constant layer thickness in EUCLID-IS based CAD system.
The complexity of the internal and external shape of dies and molds requires a more direct method in conversion of CAD data to process planning instructions.
Direct slicing of CAD models without the intermediate .STL format is preferred because it helps keep the geometric and topological robustness that the original data have and no intermediate conversion process is required.
In order to minimize the inaccuracy, the tolerance parameter and chord height can be set to smaller values, but this would make the STL data very large.
The plasma-jet path data are generated from CAD data unlike conventional tool path data created from the STL data.

With extensive experiments on one representative SD dataset of three speakers' recordings, our method achieves better accuracy than DTW, where 0.5% relative reduction of error rate (RRER) on clean speech data and 7.5% RRER on noisy and bad recording speech data.
In MWDTW, we define a similar index for each merged training data as CIDTW, and then perform DTW alignment on merged speech data with index identified.
Compared with original DTW, our new weighted method achieves better accuracy both on clean data with 0.5% relative reduction of error rate (RRER) and on noisy data with7.5% RRER.
Results Data Preparation.
Given ten time recordings for each name, one audio file of a certain name is randomly picked out as training data, the other nine files are testing data.

Obtained five data out of seven data was averaged.
Above the reduction, cracks occurred along the thickness direction on bulged surface of the billet during the HFQ process as shown in Fig. 2.
reduction is faster than that of lower until ejecting the billet from the press.
Higher reduction is effective to shorten cooling rate in both the HFQ after SHT at 773 K and 823 K.
And also, if die quenching is conducted after SHT over 823 K, the applicable reduction will not be improved due to void growth.