公开(公告)号：US5687038A

公开(公告)日：1997-11-11

申请号：US496155

申请日：1995-06-28

申请人： Takashi Sugawara ,  Kenji Ogasawara ,  Kenichiroh Satoh

发明人： Takashi Sugawara ,  Kenji Ogasawara ,  Kenichiroh Satoh

IPC分类号： G11B21/10 ,  G11B5/596

CPC分类号： G11B5/59622

摘要： A target PES value input from a controller and a value from a PES value calculator which corresponds to the displacement of a magnetic head are synthesized. A coefficient applicator applies a predetermined coefficient K.sub.1 to the above deviation (multiplication), and a variable coefficient applicator applies a coefficient K.sub.a to the resulting value. The coefficient K.sub.a is varied and set in the variable coefficient applicator in accordance with a value input from a table. The correspondence between the target PES value and the coefficient K.sub.a used as a feedback coefficient for the PES value is stored in the table in advance so that the coefficient K.sub.a is small when the PES value varies sharply and so that the coefficient K.sub.a is large when the PES value is small. The variable coefficient applicator outputs, to a driver, a value to which the coefficient K.sub.a has been applied in accordance with the value from the table.

摘要翻译： 合成从控制器输入的目标PES值和对应于磁头位移的PES值计算器的值。 系数施加器对上述偏差（乘法）施加预定系数K1，并且可变系数施加器将系数Ka应用于所得到的值。 系数Ka根据从表输入的值而变化并设置在可变系数施加器中。 将目标PES值与用作PES值的反馈系数的系数Ka之间的对应关系预先存储在表中，使得当PES值急剧变化时系数Ka小，从而当系数Ka大时 PES值小。 可变系数施加器根据表中的值向驱动器输出已经应用了系数Ka的值。