Successive approximation S/D converter with inherent quantization error
centering
    2.
    发明授权
    Successive approximation S/D converter with inherent quantization error centering 失效
    具有固有量化误差中心的连续近似S / D转换器

    公开(公告)号:US4281316A

    公开(公告)日:1981-07-28

    申请号:US932829

    申请日:1978-08-11

    IPC分类号: H03M1/00 H03K13/02

    CPC分类号: H03M1/485

    摘要: A comparator network in a successive approximation synchro-to-digital converter uses two comparators to determine the quadrant of the synchro angle and then uses one of these comparators as a steering voltage comparator to determine the less significant bits of the synchro angle. Fractions of the sine and cosine analog inputs are cross-coupled to the comparators to provide inherent quantization error centering.

    摘要翻译: 逐次逼近同步转换器中的比较器网络使用两个比较器来确定同步角的象限,然后使用这些比较器中的一个作为转向电压比较器来确定同步角的较低有效位。 正弦和余弦模拟输入的分数交叉耦合到比较器以提供固有的量化误差居中。

    Synchro to digital tracking converter
    3.
    发明授权
    Synchro to digital tracking converter 失效
    同步到数字跟踪转换器

    公开(公告)号:US4164729A

    公开(公告)日:1979-08-14

    申请号:US853342

    申请日:1977-11-21

    IPC分类号: H03M1/00 G05B1/00 H03K13/02

    CPC分类号: H03M1/1255

    摘要: An improved synchro to digital tracking converter which utilizes an approximation to generate information octally and uses digital complementing to generate information over the balance of the quadrant is implemented using a single ladder network to provide a system having fewer components and yet a higher intrinsic accuracy.

    摘要翻译: 数字跟踪转换器的一个改进的同步器使用单一梯形网络来实现使用近似值八次生成信息并且使用数字补码来在象限平衡上生成信息的数字跟踪转换器,以提供具有较少元件并且具有较高固有精度的系统。

    Correction circuit for a digital to synchro/resolver converter
    4.
    发明授权
    Correction circuit for a digital to synchro/resolver converter 失效
    数字同步/解算器转换器的校正电路

    公开(公告)号:US4157538A

    公开(公告)日:1979-06-05

    申请号:US853341

    申请日:1977-11-21

    IPC分类号: H03M1/00 H03K13/02

    CPC分类号: H03M1/0604 H03M1/665

    摘要: In a digital to synchro/resolver converter which has an intrinsic transformation ratio variation with respect to input angle greater than desired in a given application, the intrinsic variation is corrected by applying a correction to the reference voltage used in carrying out the digital to synchro conversion.

    摘要翻译: 在相对于给定应用中所需的输入角度具有固有变换比变化的数字到同步/分解变换器中,通过对用于执行数字到同步转换的参考电压应用校正来校正本征变化 。

    Digital to analog resolver converter
    5.
    发明授权
    Digital to analog resolver converter 失效
    数模转换器转换器

    公开(公告)号:US4072940A

    公开(公告)日:1978-02-07

    申请号:US691272

    申请日:1976-06-01

    CPC分类号: H03M1/665

    摘要: A digital to analog resolver converter uses a digital to analog converter to convert a part of the digital input to a corresponding analog angle value. This analog angle value is applied to sine and cosine function generators which use the equations of chords to approximate the value of the sine and cosine functions in one octant. Bits of the digital input are used to select slope values from the chord equations for approximating the sine and cosine of the analog angle value. The digital to analog resolver converter uses the minimum number of precision resistors to generate the sine and cosine slope and intercept values for the equations of a given number of approximating chords.

    摘要翻译: 数模转换器转换器使用数模转换器将一部分数字输入转换成相应的模拟角度值。 该模拟角度值被应用于正弦和余弦函数发生器,其使用和弦方程近似于八分之一的正弦和余弦函数的值。 数字输入的位用于从和弦方程中选择用于近似模拟角度值的正弦和余弦的斜率值。 数模转换器转换器使用最小数量的精密电阻来产生给定数量的近似和弦的方程的正弦和余弦斜率和截距值。