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公开(公告)号：US4410953A
公开(公告)日：1983-10-18
申请号：US217124
申请日：1980-12-17
申请人： Horace A. Barker
发明人： Horace A. Barker
摘要： Apparatus for providing an analogue output which is a trigonometrical function of the sum of an analogue angle input .theta. and a digital angle input .phi. comprises multiplying means for multiplying sines and cosines of the two angles to produce signals representing sin .theta. cos .theta. and sin .phi. cos .theta. and/or cos .theta. cos .phi. and sin .theta. sin .phi..
摘要翻译： 用于提供模拟输出的装置，其是模拟角度输入θ和数字角度输入phi之和的三角函数，包括用于乘以两个角度的正弦和余弦的乘法装置，以产生表示sinθcosθ和sinφcos θ和/或cosθcos phi和sinθsin phi。
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公开(公告)号：US4216466A
公开(公告)日：1980-08-05
申请号：US969215
申请日：1978-12-13
申请人： Louis Chasson , Raymond Euvrard , Paul Romand
发明人： Louis Chasson , Raymond Euvrard , Paul Romand
CPC分类号： H03M1/665
摘要： This disclosure describes a device for converting binary coded angle information into the analog angular position of the rotor winding of a conventional counter-reaction resolver. The device is operative to provide two periodic rectangular wave signals of equal amplitudes and of time durations respectively proportional to the absolute values of the sine and cosine of the angle. These periodic rectangular wave signals are respectively applied to the stator windings of the resolver via two amplifiers respectively. Each of these amplifiers comprises a counter-reaction loop comprising a compensation winding and a capacitor. The rotor winding of the resolver is inserted in a servocontrol loop comprising an amplifier and a commutator which are connected only in the simultaneous absence of the two periodical rectangular wave signals.
摘要翻译： 本公开描述了一种用于将二进制编码角度信息转换成常规反作用旋转变压器的转子绕组的模拟角位置的装置。 该装置可操作地提供两个相等幅度和时间持续时间的周期性矩形波信号，分别与角度的正弦和余弦的绝对值成比例。 这些周期性矩形波信号分别经由两个放大器施加到旋转变压器的定子绕组。 这些放大器中的每一个包括一个包括补偿绕组和电容器的反作用回路。 旋转变压器的转子绕组被插入到包括放大器和换向器的伺服控制回路中，该放大器和换向器仅在同时存在两个周期性矩形波信号的情况下连接。
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53.发明授权Apparatus for reducing the scale factor variation for digital resolver type converters and the like 失效用于减小数字分解器型转换器等的比例因子变化的装置
公开(公告)号：US4130875A
公开(公告)日：1978-12-19
申请号：US774696
申请日：1977-03-04
申请人： Seymour Lanton
发明人： Seymour Lanton
CPC分类号： H03M1/0604 , H03M1/665
摘要： In a digital-to-resolver type converter for generating sine and cosine functions over at least a predetermined angular range wherein variation of the scale factor from absolute value is remarkably improved by modification of the reference input wherein the sum of the sine and cosine signals are fed back in a positive sense, providing more than a 30 fold improvement in reduction of scale factor variation in one preferred embodiment.
摘要翻译： 在用于在至少预定的角度范围内产生正弦和余弦函数的数模转换器类型转换器中，其中比例因子与绝对值的变化通过修改参考输入而显着提高，其中正弦和余弦信号的和是 以正的意义反馈，在一个优选实施例中提供比例因子变化减少超过30倍的改进。
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公开(公告)号：US4070665A
公开(公告)日：1978-01-24
申请号：US690704
申请日：1976-05-27
CPC分类号： H03M1/1047 , H03M1/665
摘要： A high accuracy digital to analog resolver converter uses a read only memory device (PROM) programmed to generate a digital signal proportional to the inherent systematic error of a digital to analog resolver converter. This signal is then converted to analog form by conventional means and combined with the primary signal in analog form thereby substantially increasing the accuracy of a digital to analog resolver converter.
摘要翻译： 高精度数模转换器转换器使用被编程为仅生成与数模转换器转换器的固有系统误差成比例的数字信号的只读存储器件（PROM）。 然后，该信号通过常规方式转换为模拟形式，并以模拟形式与主信号组合，从而显着提高数模转换器转换器的精度。
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公开(公告)号：US3806917A
公开(公告)日：1974-04-23
申请号：US31179272
申请日：1972-12-04
申请人： SINGER CO
CPC分类号： H03M1/665
摘要： A digital to resolver or synchro converter in which a simple ladder network and multiplexing are used to provide highly accurate outputs at a low cost is shown. An N bit digital word representing the angle is stored in a register and N-2 bits of the word and its complement alternately switched to control a simple R, 2R-2N 3 R ladder network which in alternate time periods will provide sine and cosine outputs. Further switching logic switches the ladder network output to respective sine or cosine output channels. Each output channel provides a positive or negative output in response to inputs obtained by decoding the first two bits of the digital word. The simple approximation used in the ladder network, although it does not provide absolute sine and cosine accuracy does provide a tangent, the function of practical importance, which has the required accuracy.
摘要翻译： 示出了使用简单的梯形网络和复用来以低成本提供高精度输出的数字到分解器或同步转换器。 表示角度的N位数字字存储在寄存器中，字的N-2位交替切换，以控制简单的R，2R-2N→3梯形图网络，在另外的时间段内将提供正弦 和余弦输出。 另外的开关逻辑将梯形图网络输出切换到相应的正弦或余弦输出通道。 每个输出通道响应于通过解码数字字的前两位获得的输入而提供正或负输出。 在梯形网络中使用的简单近似虽然不提供绝对的正弦和余弦精度确实提供了切线，具有实际重要性的功能，具有所需的精度。
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公开(公告)号：US3737885A
公开(公告)日：1973-06-05
申请号：US3737885D
申请日：1971-03-31
申请人： LEAR SIEGLER INC
发明人： HEDRICK G
摘要： An apparatus for providing an analog indication of altitude in response to a digital altitude information signal, such as from a digital air data computer. The apparatus preferably provides coarse-fine altitude selection. Means, such as a digital-toresolver converter operatively connected to a resolver, provides an analog synchro signal in response to the digital altitude information signal. A servo network, such as one which includes a brushless D. C. motor, is operatively connected to the synchro signal providing means, such as to the resolver. The servo network provides an analog servo driving signal which is utilized to drive an analog display device, such as one which includes an altitude counter and analog pointer in which a geneva drive transfer mechanism interconnects the least two significant display positions, such as the tens and hundreds positions of the altimeter display.
摘要翻译： 一种用于响应于数字高度信息信号（例如从数字空中数据计算机）提供高度的模拟指示的装置。 该装置优选地提供粗细高度选择。 诸如可操作地连接到旋转变压器的数字到分解器转换器的装置提供响应于数字高度信息信号的模拟同步信号。 诸如包括无刷直流电动机的伺服网络可操作地连接到同步信号提供装置，例如到旋转变压器。 伺服网络提供模拟伺服驱动信号，该模拟伺服驱动信号用于驱动模拟显示装置，诸如包括高度计数器和模拟指针的模拟显示装置，其中日内瓦驱动传输机构将至少两个重要的显示位置相互连接，例如数十和 数百个高度表显示位置。
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公开(公告)号：US3728719A
公开(公告)日：1973-04-17
申请号：US3728719D
申请日：1972-03-20
申请人： US NAVY
发明人： FISH F
CPC分类号： H03M1/665
摘要： A digital-to-analog converter having digital angular data inputs applied to integrated switches to cause predetermined switching in circuit with resistance ladder networks of R and 2R values providing sine and cosine approximation analog voltage functions representing the digital input signals some of which digital signals control quadrant switches to produce quadrant reference phase relationships and the remainder of such control analog signals to provide amplitude scaling to drive a synchro mechanism in angular correspondence with the digital angular data inputs.
摘要翻译： 具有数字角数据输入的数模转换器，其被加到集成开关上，以使R和2R值的电阻梯形网络中的预定切换电路提供正弦和余弦近似模拟电压功能，其表示数字输入信号，其中数字信号控制 象限开关以产生象限参考相位关系，其余的这种控制模拟信号提供幅度缩放以驱动与数字角度数据输入成角度对应的同步机构。
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公开(公告)号：US3573793A
公开(公告)日：1971-04-06
申请号：US3573793D
申请日：1966-12-05
发明人： KIHLBERG GUNNAR AXEL , HOGSTROM BO
摘要： In a method and apparatus for generating digital information concerning the angular position of the rotor of a phase shifter, such as a resolver or a synchro, in which a multiphase AC voltage is supplied to the phase shifter to produce a rotating magnetic field which induces a secondary AC voltage of the same frequency as the supply voltage at a phase angle proportional to the angular position of the rotor, the simultaneous readout of a large number of phase shifters can be obtained by frequency dividing a control AC voltage of a predetermined frequency to form a plurality of AC voltages, forming the multiphase AC voltage and a code which varies cyclically with the same frequency as the multiphase AC voltage from the plurality of AC voltages, whereby the position of the vector of the rotating magnetic field derived from the multiphase AC voltage corresponds to a given value of the code at any given moment; and forming readout pulse at substantially given moment; and forming readout pulse at substantially the zero transition of the secondary voltage to thereby produce a readout or registration of the cyclic code.
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59.发明授权
公开(公告)号：US3539895A
公开(公告)日：1970-11-10
申请号：US3539895D
申请日：1966-06-03
申请人： GIDDINGS & LEWIS
发明人： MCGEE JOHN K
CPC分类号： H03M1/665 , G05B19/371
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公开(公告)号：US3305858A
公开(公告)日：1967-02-21
申请号：US35701164
申请日：1964-03-30
申请人： SPERRY RAND CORP
发明人： KING JOHN J
IPC分类号： H03M1/00
CPC分类号： H03M1/665
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