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    • 2. 发明专利
    • DISK DEVICE AND IMAGE FILING DEVICE
    • JPH0729335A
    • 1995-01-31
    • JP17059693
    • 1993-07-09
    • MITSUBISHI ELECTRIC CORP
    • NAGAOKA HIDETADAMOCHIZUKI CHIEONODA ATSUOTANAKA KAZUYUKI
    • G11B21/10
    • PURPOSE:To stabilize and highly speed up the drive of an actuator for a magnetic head by setting up a phase shift amt. in a controller by a microcontroller and a driving amt. logical means in using a table stored as to a relationship between a driving current and a thrust of a step motor. CONSTITUTION:A position detector for detecting a stop position, i.e., an encoder 21 is fitted to the step motor 11, thus positioning the magnetic head 1 constituting a magnetic disk control device 14. The device 14 is connected with a means for measuring a phase shift amt. between an output signal of the encoder 21 at the initializing time immediately after a power source is supplied or at the time of no command from a host and a stop position, a memory 13 for storing a misalignment amt. and a means for correcting a variation of the thrust due to the shift amt. Thus, the variation of the thrust due to the phase shift amt. can be controlled by the driving current, so that the adjustment of strictly fitting accuracy of the encoder is not required, and the seek operation by the actuator becomes optimum.
    • 4. 发明专利
    • Pseudo distance estimation circuit for positioning navigation, mobile body positioning device, and mobile body positioning method
    • 用于定位导航,移动身体定位装置的PSEUDO距离估计电路和移动身体定位方法
    • JP2006208392A
    • 2006-08-10
    • JP2006063456
    • 2006-03-09
    • Mitsubishi Electric Corp三菱電機株式会社
    • OMURA YUJIONODA ATSUOFURUKAWA TOSHIOSAITO MASAYUKIISHIGAMI TADATOMI
    • G01C21/00G01S19/22G01S19/24G01S19/41G01S19/49
    • PROBLEM TO BE SOLVED: To consequently obtain further accurate position information by enhancing the accuracy on input side of position information in both navigations of INS and GPS, and further enhancing the quality of feedback information.
      SOLUTION: This mobile body positioning device is adapted to determine a navigation position of a mobile body from a plurality of pseudo distances from a positioning satellite by a positioning navigation part, an inertial navigation part, and a Kalman filter. This device comprises a satellite information selection part 13 determining a Doppler estimated value by calculating the relative speed between the positioning satellite and the mobile body from a Doppler observation value between the positioning satellite and the mobile body, a navigation calendar, and output of the Kalman filter, and outputting a selected pseudo distance from the plurality of pseudo distances; and a pseudo distance estimation part 14 arithmetically outputting a pseudo distance estimated value from carrier wave phase information obtained from the positioning satellite, the selected pseudo distance and the output of the Kalman filter. The positioning navigation part 15 outputs a positioning navigation speed and a positioning navigation position with the pseudo distance estimated value as input, and the Kalman filter 16 determines a state estimated value from the pseudo distance estimated value, output of the positioning navigation part and output of the inertial navigation part.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了通过提高INS和GPS的两个导航中的位置信息的输入侧的准确度来进一步获得准确的位置信息,并进一步提高反馈信息的质量。 解决方案:该移动体定位装置适于通过定位导航部分,惯性导航部分和卡尔曼滤波器从定位卫星的多个伪距离中确定移动体的导航位置。 该装置包括卫星信息选择部分13,通过从定位卫星和移动体之间的多普勒观测值,导航日历和卡尔曼的输出计算定位卫星和移动体之间的相对速度来确定多普勒估计值 从多个伪距离中输出所选择的伪距离; 以及伪距离估计部分14,从从定位卫星获得的载波相位信息,所选择的伪距离和卡尔曼滤波器的输出中算术地输出伪距离估计值。 定位导航部15输出具有伪距离估计值作为输入的定位导航速度和定位导航位置,卡尔曼滤波器16根据伪距离估计值,定位导航部的输出和定位导航部的输出 惯性导航部分。 版权所有(C)2006,JPO&NCIPI
    • 5. 发明专利
    • Moving object acceleration/distance estimating circuit, pseudo-distance estimating circuit for positioning navigation, moving object positioning device, and moving object positioning method
    • 移动对象加速/距离估计电路,用于定位导航,移动对象定位装置的精细距离估计电路和移动对象定位方法
    • JP2005195395A
    • 2005-07-21
    • JP2004000223
    • 2004-01-05
    • Mitsubishi Electric Corp三菱電機株式会社
    • OMURA YUJIONODA ATSUOFURUKAWA TOSHIOSAITO MASAYUKIISHIGAMI TADATOMI
    • G01C21/00G01S19/41G01S19/49G01S5/14
    • PROBLEM TO BE SOLVED: To enhance accuracy in an input side in a both INS and GPS navigation methods and to enhance quality of feedback information to obtain a correct positional information as a result thereof.
      SOLUTION: This circuit is provided with a scale factor/velocity estimating part 24 for updating a scale factor by switching between positional information of a positioning satellite and positional information based on an acceleration detected by a moving object, when satisfying a plurality of prescribed conditions, and for outputting a detected vehicular speed estimation value, an acceleration estimating part 25 for determining a stationary state based on consistency of a plurality of signals for detecting the stationary state, for measuring a bias value in a stationary time to correct an acceleration of the moving object, and for outputting an estimated acceleration and a distance estimated value of the moving object estimated using the acceleration of the moving object, a Kalman filter 16 for computation-outputting a difference both pieces of positional information, using the positional information of the positioning satellite and the positional information of the moving object, as inputs, and an inertia navigation part 26 for obtaining a navigation distance of the moving object, by conducting computation based on the estimated acceleration and the distance estimated value output from a moving object acceleration/distance estimating circuit, and based on an error estimation value output from the Kalman filter.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了提高INS和GPS导航方法中的输入侧的精度,并提高反馈信息的质量以获得正确的位置信息作为其结果。 解决方案:该电路设置有比例因子/速度估计部分24,用于通过在满足多个位置信息时基于由移动物体检测到的加速度来切换定位卫星的位置信息和位置信息来更新比例因子 用于输出检测到的车速估计值的加速度估计部25,用于基于用于检测静止状态的多个信号的一致性来确定静止状态的加速度估计部25,用于测量静止时间中的偏置值以校正加速度 并且输出使用运动对象的加速度推定的运动对象的估计加速度和距离估计值;卡尔曼滤波器16,用于计算输出差异的两个位置信息,使用位置信息 定位卫星和移动物体的位置信息,a 以及用于通过基于从运动物体加速度/距离估计电路输出的估计加速度和距离估计值进行计算,并且基于误差估计值来获得运动物体的导航距离的惯性导航部26 从卡尔曼滤波器输出。 版权所有(C)2005,JPO&NCIPI
    • 8. 发明专利
    • STEP MOTOR WITH BUILT-IN POSITION DETECTOR
    • JPH04248357A
    • 1992-09-03
    • JP526191
    • 1991-01-21
    • OMRON TATEISI ELECTRONICS COMITSUBISHI ELECTRIC CORP
    • OTA HIROBUMINISHIKAWA KEIICHIONODA ATSUOIZUMI YUKIO
    • H02K41/03H02K37/02H02K37/04H02K37/20
    • PURPOSE:To make a step motor compact and make fine adjustment and mounting accuracy unnecessary when mounting a position detector by providing within a step motor a built-in position detector capable of detecting the moving position of the step motor by signals from an optical element. CONSTITUTION:A movable portion 27 is installed on a fixed portion 26 at the position limited by travel supporting mechanisms 28 of a linear step motor. In the fixed portion 27, slits 38 having the same accuracy and the same pitch as those of magnetic pole tooth 36 are provided at the central portion. An illumination source 40 is formed above the slits 38 of the movable portion 27, and light receiving sensor 41 is attached below slits 39 attached to a magnetic thin plate 34 at the fixed portion 26. When power is applied to a drive coil 32 and the movable portion 27 moves, a light beam from a light emitting element 40 installed at the movable portion 27 passes through the slits 38, the amount of light incident onto the light receiving sensor 41 located at the fixed portion 26 changes depending on the degree of overlap with the slits 39 of the fixed portions 26, and signals synchronized with the operation of the movable portion 27 are obtained. These signals are used for the closed loop control of the step motor.
    • 10. 发明专利
    • LIGHT SPOT SCANNING/CONTROLLING DEVICE
    • JP2002237065A
    • 2002-08-23
    • JP2001034508
    • 2001-02-09
    • MITSUBISHI ELECTRIC CORP
    • KASE TAKAAKIONODA ATSUO
    • G11B7/09
    • PROBLEM TO BE SOLVED: To provide a light spot scanning/controlling device capable of performing focusing control and tracking control for a light spot with high precision. SOLUTION: The device is provided with a movable holder 1 which is elastically supported on a base 17, a turntable 4 which is freely rotated on the movable holder 1, a condensing means 16 which is provided in an eccentric position on the turntable, light beam deflecting means 14 and 15 for guiding a light beam 26 passing through a rotary shaft center 400 to the condensing means 16, a rotor magnet 7 which is provided in the turntable 4, a stator having an armature coil 11 which faces the rotor magnet and is provided in the movable holder 1, and a light spot scanning/controlling means which is provided between the movable holder 1 and the base 17 via a slight gap and performs focusing control and tracking control for a light spot 27 from the condensing means 16. The movable holder 1 can be moved in the focusing and tracking directions.