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1.发明授权Laser gyro microprocessor based smart mode acquisition and high performance mode hopping 失效基于激光陀螺微处理器的智能模式采集和高性能模式跳频
公开(公告)号：US5450198A
公开(公告)日：1995-09-12
申请号：US134368
申请日：1993-10-01
IPC分类号： G01C19/66
CPC分类号： G01C19/665
摘要： A laser digital path length control method and apparatus for precisely controlling a laser path length to obtain a laser mode and change a laser mode. The invention uses a microprocessor to control a path length control circuit that continuously adjusts the position of path length control mirrors. The mirrors may be positioned in response to the microprocessor to acquire a particular mode of the laser or change the mode of the laser. While the gyro mode is changed the microprocessor increases the gyro run current to prevent loss of gyro function returning the current to its normal value following the mode change. The microprocessor adjusts the position of the two path length control mirrors such that total path length follows a predetermined or dynamic range. The invention allows the calculation of volts per mode of the laser by providing a means to monitor laser intensity as a function of voltage supplied to the laser path length controllers. The method and apparatus of the invention may be used in a laser gyro to improve system path length control and to help compensate for changes in system component parameters.
摘要翻译： 一种用于精确地控制激光路径长度以获得激光模式并改变激光模式的激光数字路径长度控制方法和装置。 本发明使用微处理器来控制路径长度控制电路，其连续地调节路径长度控制反射镜的位置。 反射镜可以响应于微处理器定位以获取激光器的特定模式或改变激光器的模式。 当陀螺仪模式改变时，微处理器增加陀螺运行电流，以防止在模式改变之后将电流返回到其正常值的陀螺仪功能的损失。 微处理器调节两个路径长度控制反射镜的位置，使得总路径长度遵循预定或动态范围。 本发明允许通过提供一种监测作为提供给激光路径长度控制器的电压的函数的激光强度的装置来计算激光器的每个模式的电压。 本发明的方法和装置可用于激光陀螺仪中以改善系统路径长度控制并帮助补偿系统部件参数的变化。
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公开(公告)号：US5363194A
公开(公告)日：1994-11-08
申请号：US931941
申请日：1992-08-18
CPC分类号： G01C19/661
摘要： A laser gyro start up apparatus and method that safely and quickly starts a laser gyro. A microprocessor sequences the mechanical and electrical systems of the laser gyro such that the gyro is started up quickly in the proper sequence. The microprocessor also executes tests on the gyro and provides a health signal in the timing sequence. The start up apparatus starts the laser block dither, laser discharge and acquires the path length controllers. Optical start up operations may be performed including the calibration of volts per mode.
摘要翻译： 一种激光陀螺启动装置和方法，可安全，快速地启动激光陀螺仪。 微处理器对激光陀螺仪的机械和电气系统进行排序，使得陀螺仪以适当的顺序快速启动。 微处理器还对陀螺仪执行测试，并在时序中提供健康信号。 启动装置启动激光块抖动，激光放电并获取路径长度控制器。 可以执行光启动操作，包括每模式的伏特率的校准。
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公开(公告)号：US5249031A
公开(公告)日：1993-09-28
申请号：US805122
申请日：1991-12-11
IPC分类号： G01C19/66
CPC分类号： G01C19/664
摘要： A dither stripper for laser gyro dither including a digital microcomputer which controls the stripping of the dither signal from the inertial navigation signal of the laser gyro. The dither stripper schedules internal A/D conversions using an A/D conversion arbitration scheme as well as calculates the expected system sample clock. Accurate dither stripping is achieved using a phase locked loop feedback system which compensates for real time changes in dither pickoff components while incorporating an accurate gain control mechanism.
摘要翻译： 用于激光陀螺仪抖动的抖动剥离器，包括控制从激光陀螺仪的惯性导航信号中去除抖动信号的数字微计算机。 抖动剥离器使用A / D转换仲裁方案调度内部A / D转换，并计算预期的系统采样时钟。 使用锁相环反馈系统实现精确的抖动剥离，该系统补偿抖动检测元件的实时变化，同时结合精确的增益控制机制。
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公开(公告)号：US5225889A
公开(公告)日：1993-07-06
申请号：US805124
申请日：1991-12-11
IPC分类号： G01C19/70
CPC分类号： G01C19/70
摘要： A direct digital dither drive for a laser gyro dither motor including a digital microcomputer which controls the dithering of a laser gyro to prevent lock in of the laser beams. The digital drive senses a dither position and schedules internal A/D conversions using an A/D conversion arbitration scheme. The period frequency and location of the minimum and maximum drive are determined using the microcontroller. Accurate dither drive is accomplished using a digital analog feedback system which compensates for real time changes in dither pickoff and dither drive components.
摘要翻译： 一种用于激光陀螺仪抖动电动机的直接数字抖动驱动器，包括控制激光陀螺仪抖动以防止激光束锁定的数字微计算机。 数字驱动器检测抖动位置，并使用A / D转换仲裁方案调度内部A / D转换。 使用微控制器确定最小和最大驱动的周期频率和位置。 使用数字模拟反馈系统实现精确的抖动驱动，可以补偿抖动传感器和抖动驱动部件的实时变化。
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公开(公告)号：US5719675A
公开(公告)日：1998-02-17
申请号：US902372
申请日：1992-06-16
CPC分类号： G01C19/661 , H01S5/06825 , H01S3/083 , H01S5/0617 , H01S5/06804 , H01S5/0683 , H01S5/1071
摘要： A laser gyro lifetime prediction method incorporates a memory model that stores a worst case performance parameter for a readout intensity, a laser intensity and a derived quantity known as volts per mode for a laser gyro. A microprocessor based life prediction method utilizes a predetermined failure criteria to judge a estimate of laser gyro life based on historic performance of laser gyro operating parameters. The prediction is based on a linear quadratic or higher order fit of lifetime data for critical temperatures. The performance data is stored in a memory model for each critical temperature and parameter. The laser gyro reports eminent failures to the inertial navigation system or a host controller. Routine scheduled maintenance of the laser gyro is enhanced by knowing its lifetime.
摘要翻译： 激光陀螺寿命预测方法包括存储器模型，其存储用于激光陀螺仪的读出强度，激光强度和被称为伏特模式的导出量的最差情况性能参数。 基于微处理器的寿命预测方法利用预定的故障准则来基于激光陀螺仪操作参数的历史性能来判断激光陀螺仪寿命的估计。 该预测基于临界温度的寿命数据的线性二次或更高阶拟合。 性能数据存储在每个临界温度和参数的存储器模型中。 激光陀螺仪报告惯性导航系统或主机控制器的突出故障。 通过了解其寿命，增强了激光陀螺仪的定期维护。
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公开(公告)号：US5486920A
公开(公告)日：1996-01-23
申请号：US137669
申请日：1993-10-01
IPC分类号： G01C19/66
CPC分类号： G01C19/664
摘要： A sampling method and apparatus for sampling a dither signal includes the step of sensing a number of peak amplitudes P.sub.1, P.sub.2, P.sub.3 . . . P.sub.n each of the number of peak amplitudes having a corresponding times t.sub.1, t.sub.2, t.sub.3 . . . t.sub.n while simultaneously sensing a number of ring laser gyro output angles at each of the corresponding times t.sub.1, t.sub.2, t.sub.3 . . . t.sub.n. A value of the gyro net output, .DELTA..phi., is calculated as .DELTA..phi.=(.phi..sub.n -.phi..sub.n-1)-(.alpha..sub.n -.alpha..sub.n-1)K, where K is a correction factor. Alternatively, the stripped gyro angle output may be calculated as .phi..sub.g =.phi..sub.n -.alpha..sub.n K. Where .phi..sub.g is substantially equivalent to the sum of all of the changes in the stripped gyro angle, that is the sum of all .DELTA..phi.'s. The correction may include corrections for gain, phase angle, nonlinearity, temperature bias and scale factors.
摘要翻译： 用于对抖动信号进行采样的采样方法和装置包括检测多个峰值幅度P1，P2，P3的步骤。 。 。 Pn的每个峰值振幅的数量具有对应的时间t1，t2，t3。 。 。 同时在相应的时间t1，t2，t3的每个时刻感测多个环形激光陀螺输出角度。 。 。 嗯 陀螺净输出值DELTA phi的计算公式为DELTA phi =（phi n- phi n-1） - （αnαn-1）K，其中K是校正因子。 或者，剥离的陀螺仪角度输出可以被计算为phi g = phi-αnK。 其中phi基本上等于剥离的陀螺仪角度的所有变化的总和，即所有DELTA phi的总和。 校正可以包括增益，相位角，非线性，温度偏差和比例因子的校正。
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公开(公告)号：US5406369A
公开(公告)日：1995-04-11
申请号：US922612
申请日：1992-07-17
CPC分类号： G01C19/661
摘要： A laser gyro configuration and control using a microprocessor. The microprocessor has a high speed peripheral transaction system which communicates through a high speed Universal Asynchronous Receiver Transmitter (UART) to a serial to parallel converter through a five Byte first in first out (FIFO) to an external system processor. The external system processor sends information in a serial fashion through a single byte parallel to serial converter to the high speed UART. Various information including gyro parameter load commands, gyro control commands, gyro status commands, and gyro calibration and diagnostic commands are sent over channels. The system provides a high speed method of controlling the laser gyro and configuring it with a processor with serial transmit and receive lines.
摘要翻译： 使用微处理器的激光陀螺仪配置和控制。 微处理器具有高速外设交易系统，通过高速通用异步收发器（UART）通过一个先进先出（FIFO）的五个字节向串行到并行转换器进行通信，并传送到外部系统处理器。 外部系统处理器以串行方式通过与串行转换器并行的单个字节向高速UART发送信息。 通过信道发送包括陀螺仪参数加载命令，陀螺仪控制命令，陀螺仪状态命令以及陀螺仪校准和诊断命令的各种信息。 该系统提供了一种控制激光陀螺仪的高速方法，并配有具有串行发射和接收线路的处理器。
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公开(公告)号：US5390019A
公开(公告)日：1995-02-14
申请号：US922611
申请日：1992-07-17
CPC分类号： G01P21/02 , G01C19/661
摘要： A laser gyro built in test apparatus. A laser gyro includes a microprocessor which provides a high speed method of communicating test data to an external inertial navigation system. The microprocessor performs tests on the gyro including temperature sensor tests, dither drive tests, active current control tests, and reports on the expected life of the gyro. The gyro can be commanded from the external system to perform any number of the built in test functions. The built in test functions are periodically executed to evaluate the health of the laser gyro and are thereby incorporated in the monitor control loop of the laser gyro.
摘要翻译： 内置测试仪的激光陀螺仪。 激光陀螺仪包括提供将测试数据传送到外部惯性导航系统的高速方法的微处理器。 微处理器对陀螺仪进行测试，包括温度传感器测试，抖动驱动测试，主动电流控制测试以及关于陀螺仪预期寿命的报告。 可以从外部系统命令陀螺仪执行任意数量的内置测试功能。 定期执行内置测试功能，以评估激光陀螺仪的健康状况，从而将其并入激光陀螺仪的监视器控制环路中。
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公开(公告)号：US5371754A
公开(公告)日：1994-12-06
申请号：US9165
申请日：1993-01-26
CPC分类号： G01C19/661 , H01S3/097
摘要： The invention provides a laser gyro with a single transformer power supply. The power supply receives a single 15 volt DC supply that is converted to a 320 volt DC supply, a 280 volt DC supply and a 500 volt DC supply. The invention implements a Royer Oscillator by providing a transformer with four windings each center-tapped. Two control transistors control the output of the transformer. The invention also provides a high speed output controlled start-up to prevent meta-stability in the Royer Oscillator.
摘要翻译： 本发明提供了具有单个变压器电源的激光陀螺仪。 电源接收单个15伏直流电源，转换为320伏直流电源，280伏直流电源和500伏直流电源。 本发明通过提供一个具有四个绕组中心抽头的变压器来实现罗伊振荡器。 两个控制晶体管控制变压器的输出。 本发明还提供了高速输出控制启动，以防止在Royer振荡器中的元稳定性。
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10.发明授权
公开(公告)号：US5299211A
公开(公告)日：1994-03-29
申请号：US936155
申请日：1992-08-27
CPC分类号： H01S3/03 , G01C19/661 , H01S3/097
摘要： A high voltage start circuit includes a high voltage start module and high voltage pulse generator apparatus. The high voltage pulse generator amplifies a five volt pulse at 60 KHz duty cycle to an output of 280 volts pulses at approximately 50% duty cycle. A PN junction high voltage diode with a high forward voltage drop and a resistor divider drives and holds a first transistor out of saturation. A low voltage diode creates a dead band such that two high voltage start module transistors are never on at the same time. The high voltage module contains two high voltage blocking diodes which protect the laser gyro active current control circuitry during start up. Two small ballast resistors and a parallel 10 times voltage multiplier generate at least a 2500 VDC output. The high voltage start circuit is contained within a laser gyro housing and is configured to have a volume less than the volume of the ring laser gyro block.
摘要翻译： 高电压启动电路包括高电压启动模块和高电压脉冲发生器装置。 高电压脉冲发生器以大约50％的占空比将60KHz占空比的5伏特脉冲放大到280伏脉冲的输出。 具有高正向压降的PN结高压二极管和电阻分压器驱动并保持第一晶体管不饱和。 低压二极管产生一个死区，使得两个高电压启动模块晶体管不会同时导通。 高压模块包含两个高压阻塞二极管，用于在启动期间保护激光陀螺有源电流控制电路。 两个小型镇流电阻和并联10倍电压倍增器产生至少2500 VDC输出。 高压启动电路被包含在激光陀螺仪外壳内并被配置为具有小于环形激光陀螺仪块体积的体积。
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