An improved motor control circuit for commutation timing and speed control for winding hard disk drive spindle motor, the circuit has a back EMF sensing circuit used in spindle motor rotation in response to mechanical winding induction voltage to produce a number of zero reference frequency signal, and the circuit cycle and the spindle motor rotation machine each corresponding predetermined number, motor control circuit of the improvement include: the characterization of device for said at the rated working state of the spindle motor spindle motor speed in several times in the rotation of the system changes, the characterization of device comprises a speed control device for zero mean. Relative to the average characteristics of the reference frequency signal timing cycle; and the average commutation timing device, is used to represent the successive zero crossing signal The average time characteristic; and compensation device for system changes the running speed of the spindle motor compensation, the compensation device comprises a speed control device for compensation, response speed control device output average improved speed control timing signal, response speed control device by the mean average timing showing its characteristic and improved speed control signal timing; and the commutation timing compensation device for reversing the timing signal in response to the average output of improved commutation timing device, the average timing response by reversing timing device showing its characteristic and average commutation timing signals are improved.
【技术实现步骤摘要】
技术介绍
1.专利
本专利技术总体上讲是涉及硬磁盘驱动器工作性能的改进,更详细地说,但并不作为限制,涉及对硬磁盘驱动器主轴电机的旋转速度偏差进行适应性补偿的设备和方法,以减小主轴电机制造容差的影响。2.现有技术的简述硬磁盘驱动器目前作为个人计算机的长期存储装置已越来越普及。这种驱动器包括若干具有可磁化涂层的硬磁盘,通过磁化沿磁盘的同心数据磁道定义的相继数据单元,可以将数据写入其中。由于磁盘的硬性,进一步包括的一个能够精确地进行磁道跟踪的伺服系统能使数据磁道间隔非常紧密,从而一个硬磁盘驱动器可以在一个很小的容积中存储大量的数据。随着计算机技术的进步,硬磁盘驱动器的一个重要特征是驱动器的“存取时间”,它是对一个典型时间的测量,在此期间磁盘驱动器不能执行存储由计算机提供的数据和检索计算机先前提供的存储数据的功能。存取时间一般包括内务操作时间,它是磁盘驱动器为其内部操作服务的时间;查找时间,它是读出/写入转换器磁头查找需要的数据磁道的时间;等待时间,它是当磁盘在转换器磁头下旋转时,所需要的数据磁道上的一个特定扇区到达转换器磁头的时间。本领域的技术人员可以理解,减小存取时间的努力包括通过加快磁盘的运行旋转速度来降低等待时间,以使得转换器磁头移动到适当的数据磁道时,特定扇区到达转换器磁头所需要的时间被减到最小。现代的磁盘驱动器采用无刷直流电机或主轴电机来以需要的运行旋转速度旋转磁盘。这些电机一般有一个包括若干相位的定子,每个相位有一组或多组电绕组绕在定子内的磁极上,并且每个相位中的绕组被串行电连接。每个相位一般与其它相位并行连接,以使得所有相位在“Y”形或“星”形结 ...
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【技术特征摘要】
【专利技术属性】
技术研发人员:S·H·汀斯摩尔,
申请(专利权)人:西加特技术有限责任公司,
类型:发明
国别省市:
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