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51. 发明专利

JP2003270265A Multi-axis acceleration detector 审中-公开
标题翻译：多轴加速度检测器
公开(公告)号：JP2003270265A
公开(公告)日：2003-09-25
申请号：JP2002068838
申请日：2002-03-13
申请人： Toyota Central Res & Dev Lab Inc , 株式会社豊田中央研究所
发明人： FUJIYOSHI MOTOHIRO , NONOMURA YUTAKA
IPC分类号： G01P15/125 , G01P15/18
CPC分类号： G01P2015/082 , G01P2015/084
摘要： PROBLEM TO BE SOLVED: To improve detection accuracy of acceleration by reducing effect of acceleration of other axis in a multi-axis acceleration detector. SOLUTION: A folded beam 130 of the multi-axis acceleration detector 301A has a going beam 130a, a returning beam 130c and a connection part 130b. The other end of the going beam 130a is connected to a fixed part 134. A linear beam 126 extends in y-axis direction in nearly parallel and one end of it is connected to a joint 128. A mass 112 is connected to the other end of linear beam 126 and is variable in x-axis direction and y-axis direction. An acceleration detection electrode 121 in x-axis direction has a movable electrode 121a connected to the mass 112 and a fixed electrode 121b. The acceleration detection electrode 140 in y-axis direction has a movable electrode 140a connected to the joint 128 and a fixed electrode 140b. COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：通过减少多轴加速度检测器中其他轴的加速度的影响，提高加速度的检测精度。解决方案：多轴加速度检测器301A的折叠梁130具有前梁130a，返回梁130c和连接部130b。远光束130a的另一端连接到固定部分134.线性光束126在y轴方向上几乎平行地延伸，并且其一端连接到接头128.质量块112连接到另一端并且在x轴方向和y轴方向上是可变的。 x轴方向的加速度检测电极121具有连接到质量块112的可动电极121a和固定电极121b。加速度检测电极140在y轴方向上具有与接头128连接的可动电极140a和固定电极140b。版权所有（C）2003，JPO

52. 发明专利

JP2003035757A Magnetic field detector 审中-公开
标题翻译：磁场探测器
公开(公告)号：JP2003035757A
公开(公告)日：2003-02-07
申请号：JP2001220725
申请日：2001-07-19
申请人： Toyota Central Res & Dev Lab Inc , 株式会社豊田中央研究所
发明人： NONOMURA YUTAKA , YAMADERA HIDEYA , OTA NORIKAZU , NISHIBE YUJI , TSUKADA ATSUSHI
IPC分类号： G01R33/02
摘要： PROBLEM TO BE SOLVED: To realize a magnetic field detector 10 having a higher detection accuracy.
SOLUTION: The magnetic field detector 10 is largely divided to be constituted of a magnetic field sensor 16 having two MI elements 20a and 20b for detecting a magnetic field in the X-direction and two MI elements 20c and 20d for detecting a magnetic field in the Y-direction, a drive part (a square wave oscillation circuit 12 and a pulse current adjusting circuit 14) for driving four MI elements 20a-20d of the magnetic field sensor 16, a detection part (load resistors 28a-28d, peak holding circuits 30a-30d and difference circuits 32a and 32b) for detecting the impedances of the MI elements 20a-20d of the magnetic field sensor 16 and a discrimination means 43 (rectifier circuits 38a and 38b, an addition circuit 40 and a discrimination circuit 42) for discriminating whether at least one of the MI element in the X-direction and the MI element in the Y-direction detects a magnetic field with predetermined or higher intensity.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：实现具有较高检测精度的磁场检测器10。解决方案：磁场检测器10被大部分分割成具有两个用于检测X方向的磁场的MI元件20a和20b的磁场传感器16和用于检测X方向上的磁场的两个MI元件20c和20d Y方向，用于驱动磁场传感器16的四个MI元件20a-20d的驱动部分（方波振荡电路12和脉冲电流调节电路14），检测部分（负载电阻器28a-28d，峰值保持电路 30a-30d和差分电路32a和32b），用于检测磁场传感器16的MI元件20a-20d的阻抗和鉴别装置43（整流电路38a和38b，加法电路40和判别电路42），用于鉴别X方向上的MI元件和Y方向上的MI元件中的至少一个是否以预定或更高强度检测磁场。

53. 发明专利

JPH07128068A OSCILLATOR 失效
公开(公告)号：JPH07128068A
公开(公告)日：1995-05-19
申请号：JP29449593
申请日：1993-10-28
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： SUGITANI NOBUYOSHI , OKUWA MASAYUKI , MORIKAWA KENJI , NONOMURA YUTAKA
IPC分类号： G01C19/56 , G01C19/5607 , H03H9/02 , H03H9/24 , G01P9/04
摘要： PURPOSE:To simplify the adjustment of resonance frequency of an oscillation piece constituting an oscillator. CONSTITUTION:An oscillation gyro 10 is made of a plate member of light alloy, e.g. duralumin, and a pair of oscillation pieces 14, 16 are projecting from the base part 12. A relationship l2/sq. rt. (t2)=l1/sq. rt. (w1) is satisfied between the oscillation pieces 14, 16, where l1: length of the oscillation piece 14, w1: width of the oscillation piece along X axis, t1: thickness of the oscillation piece, l2: length of the oscillation piece, w2: width of the oscillation piece along X axis, and t2 (=t1): thickness of the oscillation piece. Each oscillation piece and the base part thereof are formed to satisfy the relationship. This structure allows matching of the resonance frequency in the X-axis direction when the oscillation piece 14 oscillates along the X-axis and the resonance frequency in the Y-axis direction when the oscillation piece 16 oscillates along the Y-axis.

54. 发明专利

JPH0791962A VIBRATOR AND ANGULAR VELOCITY SENSOR 失效
公开(公告)号：JPH0791962A
公开(公告)日：1995-04-07
申请号：JP26425093
申请日：1993-09-27
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： KURATA NOBUO , OKUWA MASAYUKI , NONOMURA YUTAKA , TSUKADA ATSUSHI
IPC分类号： G01C19/56 , G01C19/5719 , G01P9/04
摘要： PURPOSE:To achieve higher detection sensitivity by increasing the ampitude of vibration. CONSTITUTION:Junction parts 30 and 31 of vibration parts 32 and 34 of the vibrator 10 are made of a material with a rigidity lover than that for forming an excitation side arm 12 and a detection side arm 22. When an AC voltage is applied to a piezo-electric element 18a for excitation to apply a vibration to vibration parts 32 and 34 in the direction of the (x) axis, a vibration waveform turns to a waveform similar to the figure of a chevron from a sinusoidal shape so that the amplitude at the junction parts 30 and 31 becomes larger than that when it is made of material of the same rigidity. When rotational angular velocity is applied about the (z) axis under the application of the vibration, a coriolis force proportional to the amplitude works on the vibration parts 32 and 34 to cause vibration in the direction of the (y) axis and an electrical signal is detected according to the condition of the vibration with piezo-electric elements 28a and 28b for detection. Thus, the amplitude and the electric signals detected are made large by lowering the rigidity of the junction parts 30 and 31 thereby upgrading detection sensitivity.

55. 发明专利

JPH0791960A ANGULAR VELOCITY SENSOR AND SENSOR ELEMENT 失效
公开(公告)号：JPH0791960A
公开(公告)日：1995-04-07
申请号：JP26194493
申请日：1993-09-24
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： OZAKI IWAO , TSUKADA ATSUSHI , NONOMURA YUTAKA , OKUWA MASAYUKI
IPC分类号： G01C19/56 , G01C19/5614 , G01P9/04
摘要： PURPOSE:To obtain an angular sensor which achieves easier production and higher detection sensitivity. CONSTITUTION:A sensor element 10 of the angular velocity sensor is made up of multiple pairs of vibrators 22-27 for excitation differing in length sequentially and fixed in the thickness and width thereof and pairs of vibrators 42-47 for detection and piezo-electric elements 32-37 for excitation are bonded securely on the sides of the vibrators 22-27 for excitation while the piezo-electric elements 52-57 for detection on the sides turned by 90 deg. of the vibrators 42-47 for detection. AC voltage is applied to the piezo-electric elements for excitation of a pair of the vibrators for excitation to be vibrated steadily and when a specified rotational angular velocity is applied, a coriolis force works on the vibrator for detection to generate an electrical signal (AC voltage) by piezo-electric effect of the piezo-electric elements for detection. A combination to generate an electrical signal giving the maximum voltage is selected from the combinations of a pair of the vibrators for excitation to be vibrated and a pair of the vibrators for detection to detect and an excitation circuit and a detection circuit are connected to the vibrators selected. Thereby, a highly sensitive angular velocity sensor can be obtained even if production errors occur in the sensor element 10.

56. 发明专利

JPH07113645A VIBRATING GYRO 失效
公开(公告)号：JPH07113645A
公开(公告)日：1995-05-02
申请号：JP28159693
申请日：1993-10-15
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： KURATA NOBUO , HARADA KENJI , OZAKI IWAO , SUGITANI NOBUYOSHI , TSUJI KIMIHISA , NONOMURA YUTAKA , MORIKAWA KENJI , OKUWA MASAYUKI , TSUKADA ATSUSHI
IPC分类号： G01C19/56 , G01C19/5607 , G01C19/5614 , G01P9/04
摘要： PURPOSE:To simplify and miniaturize the constitution of a vibrating gyro. CONSTITUTION:A pair of two vibrating pieces 14, 16 are projected from a base section 12 and provided in a vibrating gyro 10 made of a light alloy such as duralumin. Only piezoelectric elements 20 for exciting the vibrating piece 14 along an X axis are mounted at the root of the vibrating piece 14 on both side faces of the vibrating piece 14. The vibrations of the vibrating piece 14 along the X axis are propagated to the vibrating piece 16, and the vibrating piece 16 is brought previously under the state of vibrations along the X axis. On the other hand, only piezoelectric elements 24 detecting the state of vibrations at a time when the vibrating piece 16 is vibrated along a Y axis are installed at the root of the vibrating piece 16 on the upper and lower surfaces of the vibrating piece 16. When the vibrating piece 16 receives Coriolis force based on rotational angular velocity omega in the periphery of a Z axis and the vibrating piece 16 is vibrated along the Y axis, the state of vibrations along the Y axis is acquired as an electric signal (AC voltage) by the piezoelectric effect of the piezoelectric elements 24.

57. 发明专利

JPH1054725A ANGULAR VELOCITY DETECTING DEVICE 失效
公开(公告)号：JPH1054725A
公开(公告)日：1998-02-24
申请号：JP21261796
申请日：1996-08-12
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： SUGITANI NOBUYOSHI , NONOMURA YUTAKA
IPC分类号： G01C19/56 , G01C19/5607 , G01C19/5628 , G01P9/04
摘要： PROBLEM TO BE SOLVED: To minimize the vibration leakage from an oscillator base and precisely detect a vibration by setting the rotating inertial forces with the connecting parts with the oscillator base as fulcrums by Z-directional vibrations of first and second vibrating pieces so as to be substantially equal to each other. SOLUTION: Vibrating pieces 12, 13 have the same dimension, and are used as exciting vibrating pieces, and vibrating pieces 14, 15 also have the same dimension, and are used as detecting vibrating pieces. The rotating inertial force with the connecting part with an oscillator base 11 as fulcrum by Z- directional vibration of the vibrating piece 12 is substantially equal to the rotating inertial force with the connecting part with the oscillator base 11 as fulcrum by Z-directional vibration of the vibrating piece 14. In the same manner, the rotating inertial forces with the connecting parts with the oscillator base 11 by Z-directional vibration of the vibrating pieces 13, 15 are also substantially equal to each other. Since the vibrating pieces 12 and 13 and the vibrating pieces 14 and 15 which are mutually paired on the same axis have substantially equal rotating inertial forces, the oscillator base 11 is never rocked in Z-direction when the vibrating pieces are mutually coupled and vibrated in the reverse phase.

58. 发明专利

JPH0798228A VIBRATION GYRO 失效
公开(公告)号：JPH0798228A
公开(公告)日：1995-04-11
申请号：JP26581193
申请日：1993-09-28
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： SUGITANI NOBUYOSHI , MORIKAWA KENJI , TSUKADA ATSUSHI , NONOMURA YUTAKA
IPC分类号： G01C19/56 , G01C19/5614 , G01P9/04
摘要： PURPOSE:To provide a compact and high-sensitivity vibration gyro with a simple configuration. CONSTITUTION:Three vibration pieces 14, 16, and 18 are protruded from a base part 12 and only a pair of piezo elements are provided at the vibration pieces. Then, the vibration piece 14 is excited along the X axis by a piezo element 20. The vibration of the vibration piece 14 is propagated to vibration pieces 16 and 18. The vibration state of the vibration piece 18 which vibrates along the X axis after the vibration of the vibration piece 14 vibrates is detected by a piezo element 22 provided at the vibration piece 18 and is reflection on the excitation of the vibration piece 14. On the other hand, a rotary angular velocity omega around Z axis is applied to a vibration gyro 10, the vibration of the vibration piece 14 is propagated and coriolis force is operated on the vibration piece 16 which is vibrating along the X axis and then the vibration piece 16 vibrates along Y axis. Then, the vibration state along the Y axis of the vibration piece 16 is detected by a piezo element 24.

59. 发明专利

JPH0658196A MISS FIRE DETECTING DEVICE 失效
公开(公告)号：JPH0658196A
公开(公告)日：1994-03-01
申请号：JP21159592
申请日：1992-08-07
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： SAKURAI KAZUHIRO , OBUCHI HIROSHI , NISHIBE YUJI , NONOMURA YUTAKA , TSUKADA ATSUSHI , TAKEUCHI MASAHARU , MIYASHITA MASANORI
IPC分类号： F02B77/08 , F02D45/00 , G01M15/04 , G01M15/11 , G01M15/00
摘要： PURPOSE:To perform high-precise discrimination of a cylinder to which a misfire occurs by providing a misfire pattern discriminating means and comparing displacement of the phase of a specified frequency component with displacement of a stored phase according to a discriminated misfire pattern. CONSTITUTION:A torque detecting means 200 to detect the instantaneous value of generated torque of a multicylinder internal combustion engine is provided and from the detected generated torque, a specified frequency component is sampled by a specified frequency component sampling means 202. A misfire pattern discriminating means 204 is provided for deciding it based on a characteristic frequency component sampled by the sampling means 202 whether a misfire occurs and discriminating a misfire pattern when a misfire is decided. A cylinder to which a misfire occurs is decided by a misfire cylinder deciding means 208 by comparing displacement of the phase of the sampled specified frequency component with displacement of a phase stored in a memory means 206 according to the discriminated misfire pattern.

60. 发明专利

JP2000180180A PHYSICAL AMOUNT DETECTOR AND ANGULAR VELOCITY DETECTOR 失效
公开(公告)号：JP2000180180A
公开(公告)日：2000-06-30
申请号：JP35824698
申请日：1998-12-16
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： NAGAO MASARU , FUJIYOSHI MOTOHIRO , FUJITSUKA TOKUO , MIZUNO KENTAROU , OMURA YOSHITERU , NONOMURA YUTAKA
IPC分类号： G01P3/14 , G01C19/56 , G01C19/5726 , G01C19/5762 , G01C19/5769 , G01P9/04
摘要： PROBLEM TO BE SOLVED: To avoid deterioration in accuracy of angular velocity detection due to a variation in machining. SOLUTION: A vibrator 11 floating on a substrate 10 is supported by anchors 16a-1 to 16b-4 via detecting beams 12-1 to 12-4, couplings 13-1, 13-2, driving beams 14a-1 to 14a-4, couplings 15-1 to 15-4 and driving beams 14b-1 to 14c-4 so that it can vibrate both in X-and Y-axis directions. Angular velocity around a Z-axis which is orthogonal to both X-and Y-axis functions while the vibrator 11 is vibrated in an X-axis direction by a driving electrode 17, and the vibrator 11 vibrates in a Y-axis direction in proportion to the angular velocity. Control electrodes 25-1 to 25-4 are provided on the driving beams 14a-1 to 14a-4, electrostatic attraction due to the electrodes 25-1 to 25-4 is changed by changing applied DC voltage, and a spring constant of the driving beams 14a-1 to 14c-4 is electrically controlled, thereby eliminating leakage vibration of the vibrator 11 in the Y-axis direction.

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