-
1.发明公开Disk drive actuator velocity limiting circuit 失效Schaltung zur Geschwindigkeitsbegrenzung des Antriebes einer Platteneinheit。
公开(公告)号：EP0249062A2
公开(公告)日：1987-12-16
申请号：EP87107233.6
申请日：1987-05-19
摘要： A control circuit for a disk drive actuator is shown wherein the power to the actuator is switched from the normal power source to the spindle drive motor windings (50) functioning as a generator, when the power is interrupted. The rectified output of the current from the stator windings has a polarity which drives the actuator to the home position. Back to back diode means (51, 52) are connected in parallel with the actuator coil (48) when the spindle motor windings are functioning to generate power. The number of series connected diodes in each of the diode means determines the upper limit of actuator velocity. The switching function can be actuated by either a power interruption or by an error condition.
摘要翻译： 示出了用于盘驱动器致动器的控制电路，其中当电力中断时，致动器的功率从正常电源切换到用作发电机的主轴驱动电动机绕组（50）。 来自定子绕组的电流的整流输出具有将致动器驱动到原始位置的极性。 当主轴电动机绕组正在起作用时，背对背二极管装置（51,52）与致动器线圈（48）并联连接。 每个二极管装置中的串联二极管的数量决定了致动器速度的上限。 切换功能可以通过电源中断或错误状态来启动。
-
公开(公告)号：EP0249062B1
公开(公告)日：1992-08-19
申请号：EP87107233.6
申请日：1987-05-19
-
公开(公告)号：EP0249062A3
公开(公告)日：1989-09-20
申请号：EP87107233.6
申请日：1987-05-19
摘要： A control circuit for a disk drive actuator is shown wherein the power to the actuator is switched from the normal power source to the spindle drive motor windings (50) functioning as a generator, when the power is interrupted. The rectified output of the current from the stator windings has a polarity which drives the actuator to the home position. Back to back diode means (51, 52) are connected in parallel with the actuator coil (48) when the spindle motor windings are functioning to generate power. The number of series connected diodes in each of the diode means determines the upper limit of actuator velocity. The switching function can be actuated by either a power interruption or by an error condition.
-
-
搜索结果
3 条记录 (耗时 0.009 秒)
