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    • 2. 发明授权
    • Automatic map compilation system
    • 自动地图编译系统
    • US5345086A
    • 1994-09-06
    • US318538
    • 1963-10-24
    • Sidney Bertram
    • Sidney Bertram
    • G01C11/00H04N13/00G01C11/12
    • G01C11/00H04N13/0003H04N13/02H04N2013/0081
    • An automatic map complication system, for deriving information from a pair of stereoscopic photographs by scanning portions thereof which represent homologous imagery comprising:first means for scanning at least portions of a pair of stereoscopic photographs and developing video signals in accordance therewith;second means, including computing means, operable in a sequence of cycles of operation, for estimating for successive cycles of operation, on the basis of at least photogrammetric data related to said pair of photographs, the portions of said photographs which represent homologous imagery and controlling said first means to synchronously scan said portions; andthird means responsive to said video signals for comparing said video signals therein and producing error signals which represent the degree of error in said second means in estimating said portions of said photographs as representing homologous imagery, said second means including means responsive to said error signals for updating the estimate of the locations of portions of said photographs, which represent homologous imagery, adjacent the scanned portions.
    • 一种自动地图复现系统,用于通过扫描表示同源图像的部分来从一对立体照片中导出信息,其包括:第一装置,用于扫描一对立体照片的至少一部分并根据其显影视频信号; 第二装置,包括可在一系列操作循环中操作的计算装置,用于基于至少与所述一对照片相关的摄影测量数据估计连续的操作循环,所述照片的表示同源图像和控制的部分 所述第一装置同步扫描所述部分; 以及响应于所述视频信号的第三装置,用于比较其中的所述视频信号,并且在将所述照片的所述部分估计为表示同源图像时产生表示所述第二装置中的误差程度的误差信号,所述第二装置包括响应所述误差信号的装置 用于更新与扫描部分相邻的所述照片的表示同源图像的部分的位置的估计。
    • 3. 发明授权
    • Positioning control system
    • 定位控制系统
    • US4245297A
    • 1981-01-13
    • US385252
    • 1964-07-27
    • Sidney Bertram
    • Sidney Bertram
    • G05B19/23G05B19/21
    • G05B19/231G05B2219/33268G05B2219/35238G05B2219/37028G05B2219/41363
    • A mechanical element positioning control system. Position measuring means supply actual position and a computer supplies desired position as the least significant 11 bits of an 18 bit signal to corresponding digital to analog units, each comprising an 11 bit register and an 11 bit digital to analog converter. A differential amplifier compares the outputs of the digital to analog converters and generates a position error signal. A threshold circuit operates to complement the most significant bit of the D/A registers when exceeding of a maximum allowable analog error occurs. A servo system responsive to the position error signal positions the mechanical element to eliminate difference between desired and actual position. By eliminating the seven most significant bits representing desired and actual position, the total range is divided into 2.sup.7 separate fields so that D/A units of practical accuracy may be employed to make feasible a positioning control system of required accuracy and range.
    • 机械元件定位控制系统。 位置测量装置提供实际位置,并且计算机将所需位置作为18位信号的最低有效11位提供给相应的数字到模拟单元,每个单元包括11位寄存器和11位数模转换器。 差分放大器比较数模转换器的输出,并产生位置误差信号。 当超过最大允许的模拟错误发生时,阈值电路用于补充D / A寄存器的最高有效位。 响应于位置误差信号的伺服系统定位机械元件以消除期望和实际位置之间的差异。 通过消除表示期望和实际位置的七个最高有效位,将总范围分为27个独立的场,使得可以采用具有实际精度的D / A单元使得所需精度和范围的定位控制系统成为可行。