Download Hard Disk Drive: Mechatronics and Control by Abdullah Al Mamun PDF

By Abdullah Al Mamun

The hard disk is likely one of the best examples of the precision keep an eye on of mechatronics, with tolerances lower than one micrometer completed whereas working at excessive pace. expanding call for for greater facts density in addition to disturbance-prone working environments proceed to check designers mettle.

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The amplitude of dominant modes in PES spectrum before and after compensation. . . . . . . . . . . . . Parameters of a PZT actuated suspension model . . . . Specifications for Dual-stage Control Design Example . . . VCM Loop Gain Margin vs. MASSC . . . . . . . . MASSC for different control schemes . . . . . . . . 4 161 164 167 175 193 202 Performance of some ferromagnetic materials . . . . . 209 MMF Harmonics produced by the one phase winding in the 9slot spindle motor with normal winding format .

Magnetic field generated by the distributed winding with 1 polepair . . . . . . . . . . . . . . . . . Cross-section of the motor showing the integration loops . . The reluctances in the loop circuit . . . . . . . . The MMF waveform of the distributed conductors . . . . The distributed winding with 2 magnetic pole-pairs . . . . One-phase distributed winding . . . . . . . . . Three-phase distributed winding . . . . . . . . . Ampere’s force acting on a conductor .

266 Concentrated winding for 9-slots/4-pole-pair spindle motor. . 65. 65. . . . . . . . . . . 268 The gap between the stator core and rotor core . . . . . 269 The radial direction airgap field in a spindle motor, A: The state without armature current and B: The state with 5 times of rated armature current. . . . . . . . . . . . . . 269 Cogging torque produced in a spindle motor with 9-slots and 3-pole-pairs (obtained by using finite element method). . . 270 Power flow in spindle motor.

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