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1. 发明专利

JP2002107106A POSITION DETECTOR 失效
公开(公告)号：JP2002107106A
公开(公告)日：2002-04-10
申请号：JP2000299907
申请日：2000-09-29
申请人： GOTO TADATOSHI
发明人： GOTO TADATOSHI , SAKAMOTO KAZUYA , SAKAMOTO HIROSHI
IPC分类号： G01B7/00 , G01B7/30 , G01D5/20 , G01D5/245
摘要： PROBLEM TO BE SOLVED: To provide a position detector which is small and of a simple structure and in which a temperature characteristic is readily compensated. SOLUTION: A magnetism responsive member (11) is coupled magnetically in a noncontact manner, to one AC-excitated sensor coil (L1). According to a displacement in an object to be detected, the relative position of the member to the coil is changed, and the impedance of the coil is changed according to the change. A coil (L2) for temperature compensation is connected in series with the sensor coil (L1). From their connection point, the output voltage of the coil changed, on the basis of a change in the impedance of the sensor coil, is taken out. An output whose temperature drift has been compensated is obtained. A reference voltage comprising an AC signal is generated, and the output voltage of the sensor coil and the reference voltage are computed. Thereby, at least two AC output signals, which have a prescribed cyclic amplitude function as an amplitude factor, can be generated.

2. 发明专利

JP2002090182A POSITION DETECTION DATA GENERATION METHOD AND DEVICE 失效
公开(公告)号：JP2002090182A
公开(公告)日：2002-03-27
申请号：JP2000275738
申请日：2000-09-11
申请人： GOTO TADATOSHI
发明人： GOTO TADATOSHI , SAKAMOTO KAZUYA , AKATSU NOBUYUKI
IPC分类号： G01B7/00 , G01B7/30 , G01D5/244 , G01D5/245
摘要： PROBLEM TO BE SOLVED: To reduce a load of a processing unit (CPU) for executing interpolation operation. SOLUTION: An alternating-current output signal having an electrical phase angle shifted in phase corresponding to the detection object position. The phase difference of the alternating-current output signal relative to a prescribed reference phase is detected, to thereby generate detection data (P1). The operation is executed as interruption processing corresponding to a position detection demand, and the interpolation operation is executed to the generated detection data (P1). The time elapse (Txp) from the phase difference detection point of time to the interruption point of time for the interpolation operation is measured. The interpolation operation includes a step for obtaining predicted values (ΔP, VT) based on two or more samples (P0, P1) in the detection data close in time and a step for executing the interpolation operation to the detection data by using an interpolation ratio corresponding to the time elapse and the predicted values.

3. 发明专利

JP2001235377A RELATIVE ROTATIONAL POSITION DETECTING DEVICE 失效
公开(公告)号：JP2001235377A
公开(公告)日：2001-08-31
申请号：JP2000072923
申请日：2000-03-15
申请人： GOTO TADATOSHI
发明人： GOTO TADATOSHI , SAKAMOTO KAZUYA , SAKAMOTO HIROSHI
IPC分类号： G01L3/10 , B62D5/04 , G01B7/00 , G01B7/30 , G01D5/20 , G01D5/245 , G01L5/22
摘要： PROBLEM TO BE SOLVED: To make a detecting device small in size and to make detectable even micro displacement with high resolution. SOLUTION: The device has at least one coil L1 excited by an alternating current signal. The relative position of a pair of magnetism responding members 11, 12 made of a magnetic material, conductive body, or the like varies according to a relative rotating position of an input shaft 2 and an output shaft 3. Inductance of the coil L1 varies according to the relative position, and voltage generated in the coil gradually increases (or decreases). In an analog calculating circuit, the voltage Vx in the coil is taken out and subjected to calculation together with reference voltage Va, Vb to form two alternating current output signals sinθsinωt and cosθsinωt indicating amplitude following sine function characteristics and cosine function characteristics, respectively, according to the relative rotating position of an object to be detected. The relative rotating position is detected by detecting a phase value θ in an amplitude coefficient of the sine and cosine function characteristics.

4. 发明专利

JP2001235307A ROTARY TYPE POSITION DETECTING APPARATUS 失效
公开(公告)号：JP2001235307A
公开(公告)日：2001-08-31
申请号：JP2000070795
申请日：2000-03-14
申请人： GOTO TADATOSHI
发明人： GOTO TADATOSHI , SAKAMOTO KAZUYA , SAKAMOTO HIROSHI
IPC分类号： G01B7/30 , G01B7/00 , G01D5/20 , G01D5/245
摘要： PROBLEM TO BE SOLVED: To make small and simplify a detecting apparatus. SOLUTION: Coils 11 and 12 which are excited by a predetermined ac signal are arranged in a stator portion 10 and no secondary coil is provided. A rotor portion 20 is provided with a magnetism-responsive member 21 made of a magnetic body or an electrical conductor of a predetermined shape such that the impedance of each of the coils 11 and 12 is varied depending on a rotational position θ. As the impedance varies, the terminal-to-terminal voltage of each of the coils 11 and 12 increases or decreases over a predetermined range of rotational angles. A reference voltage corresponding to the mid point of the increase or decrease is generated by an ac-excited coil 13 provided in a position where it is unaffected by the rotational position θ, and the reference voltage is computed with a voltage taken out of each of the coils 11 and 12, whereby first and second ac output signals, sinθsinωt and cosθsinωt, are generated having first and second periodical amplitude functions as amplitude factors which oscillate toward the positive and negative sides with a zero point serving as the center. The rotational position θ is detected from this amplitude phase component θ.

5. 发明专利

JP2001141410A POSITION DETECTING APPARATUS 失效
公开(公告)号：JP2001141410A
公开(公告)日：2001-05-25
申请号：JP2000070326
申请日：2000-03-14
申请人： GOTO TADATOSHI
发明人： GOTO TADATOSHI , SAKAMOTO KAZUYA , SAKAMOTO HIROSHI
IPC分类号： G01B7/00 , G01B7/30 , G01D5/20 , G01D5/245
摘要： PROBLEM TO BE SOLVED: To miniaturize a detecting apparatus which is capable of detection with high resolution in the case of fine displacement. SOLUTION: A coil part 10 is constituted by arranging a plurality of coil sections LA-LD in order in the direction of displacement which coils are excited in phase. Relative position of a magnetic response member 11 composed of magnetic substance or conductor to the coil part changes in accordance with a detection objective position. Inductance of the coil sections changes corresponding to the relative position. When one end portion 11a of the member 11 moves from one end of a coil section to the other end, a voltage between both ends of the coil section increases or decreases gradually. Analog operation circuits 20, 21 add and/or subtract voltages led out from each coil section, thereby forming two AC output signals showing amplitudes of sine and cosine function characteristics corresponding to the detection objective position. From correlation of amplitude values in the AC output signals, a specified phase value θin the sine and cosine functions regulating the amplitude values is detected, thereby forming position detecting data of an object to be detected.

6. 发明专利

JP2000145281A WINDOW REGULATOR DEVICE 失效
公开(公告)号：JP2000145281A
公开(公告)日：2000-05-26
申请号：JP31487498
申请日：1998-11-05
申请人： GOTO TADATOSHI
发明人： GOTO TADATOSHI , SAKAMOTO KAZUYA , SAKAMOTO HIROSHI
IPC分类号： B60J1/17 , E05F15/10
摘要： PROBLEM TO BE SOLVED: To provide a window regulator device having a small and simple structure, capable of detecting the opening and closing status of a window glass with high resolution. SOLUTION: A position detector is provided on a window regulator device, and the position detector has a coil part 9 including a primary coilexcited by an A.C. signal and a secondary coil magnetically connected to the primary coil, and a magnetic response member. According to the movement of a window glass 7, one of the coil part 9 and the magnetic response member is relatively displaced, and according to the displacement, the magnetic characteristic between the coil part 9 and the magnetic response member is varied. Then, an output signal amplitude-modulated according to designated amplitude function characteristic corresponding to the variation is induced in the secondary coil. According to an output signal output from the secondary coil, the position of the window glass is detected.

7. 发明专利

JPH1082607A INDUCTION-TYPE TWO-DIMENSIONAL POSITION-DETECTING APPARATUS 失效
公开(公告)号：JPH1082607A
公开(公告)日：1998-03-31
申请号：JP12298997
申请日：1997-04-24
申请人： GOTO TADATOSHI
发明人： GOTO TADATOSHI , YUASA YASUHIRO , TANAKA SHUICHI , AKATSU NOBUYUKI , SAKAMOTO KAZUYA , SAKAMOTO HIROSHI , YAMAMOTO AKIO
IPC分类号： G01B7/00 , G01D5/12 , G01D5/22 , G01D5/243 , G01D5/245
摘要： PROBLEM TO BE SOLVED: To detect a two-dimensional position by one detecting apparatus. SOLUTION: An X-axis detecting part 1X and a Y-axis detecting part 1Y are arranged on a two-dimensional plane included in a base part 1 to cross each other. The X-axis detecting part includes a plurality of poles arranged along an X-axis direction and each pole has an electromagnetic induction coupling part of a primary and a secondary windings. The Y-axis detecting part 1Y includes a plurality of poles along a Y-axis direction and each pole has an electromagnetic induction coupling part of a primary and a secondary windings. A magnetism-responsive member 3 including a permanent magnet is set to be relatively shiftable in the X-axis and Y-axis directions to the base part. An X-axis component position and a Y-axis component position are detected by the X-axis detecting part and Y-axis detecting part in accordance with a relative position of the magnetism-responsive member 3. A conductive substance 4 is disposed to correspond to a predetermined position in the base part 1. A magnetic field is formed by an eddy current generated at the conductive substance in accordance with a shift of the magnetism-responsive member, whereby the permanent magnet of the magnetism-responsive member is attracted to the conductive substance. As a result, the magnetism-responsive member is attracted to a predetermined arrangement and the action of the member is buffered.

8. 发明专利

JPH0953909A INDUCTION TYPE ROTATIONAL POSITION DETECTING DEVICE 失效
公开(公告)号：JPH0953909A
公开(公告)日：1997-02-25
申请号：JP22595395
申请日：1995-08-10
申请人： GOTO TADATOSHI
发明人： GOTO TADATOSHI , YUASA YASUHIRO , TANAKA SHUICHI , AKATSU NOBUYUKI , SAKAMOTO KAZUYA , SAKAMOTO HIROSHI
IPC分类号： G01B7/00 , G01B7/30 , G01D5/20 , G01D5/245
摘要： PROBLEM TO BE SOLVED: To improve the detection accuracy of an induction type rotational position detecting device, simplify the constitution of the device, and reduce the size of the device. SOLUTION: In a stator 3, secondary windings 2As-2Fs constituting one group are dispersedly arranged over a prescribed extent and the inductance of each winding 2As-2Fs in the group is set so that the inductances can show a prescribed inductance distribution. A rotor 4 has an eccentric shape so that the rotor 4 can cause desired changes in magnetic coupling with each pole of the stator 3 in accordance with the rotational position of the rotor 4. Therefore, the rotational position of the rotor 4 can be detected with accuracy by a simple constitution by combining the change in the magnetic coupling between the primary windings and secondary windings of the stator 3 in accordance with the rotational position of the rotor 4 and the prescribed inductance distribution of the secondary windings 2a-2f. It is also possible to set the inductances of the primary windings 1A-1F of the stator 3 so that the inductances can show a prescribed inductance distribution.

9. 发明专利

JP2003121107A ROTARY POSITION DETECTOR 审中-公开
公开(公告)号：JP2003121107A
公开(公告)日：2003-04-23
申请号：JP2001313083
申请日：2001-10-10
申请人： GOTO TADATOSHI
发明人： GOTO TADATOSHI , SAKAMOTO HIROSHI
IPC分类号： G01B7/30 , G01B7/00 , G01D5/245
摘要： PROBLEM TO BE SOLVED: To miniaturize and simplify a rotary position detector. SOLUTION: The rotary position detector has a sensor head (SH) which is constituted by arranging at least a pair of coils excited by an AC signal over a part of a predetermined angle-of-rotation range, and a magnetic response member (RP) arranged so as to be rotationally displaced relatively with respect to the sensor head (SH). The magnetic response member (RP) has a shape generating not only output showing differential characteristics in the respective coils corresponding to a relative rotary position, but also output corresponding to a plurality of cycles during one rotation. By this constitution, the sensor head (SH) is arranged so as to be biased to a place of an angle range where no obstacle is present to make it possible to detect rotation with high accuracy. Therefore, an effective result is obtained in such a case that the position detector is arranged within an existing machine of a narrow range.

10. 发明专利

JP2002310608A ANGLE MEASURING INSTRUMENT 失效
公开(公告)号：JP2002310608A
公开(公告)日：2002-10-23
申请号：JP2001113753
申请日：2001-04-12
申请人： GOTO TADATOSHI
发明人： GOTO TADATOSHI
IPC分类号： G01B5/24 , B21D5/02 , G01B7/00 , G01B7/30 , G01D5/20 , G01D5/245
摘要： PROBLEM TO BE SOLVED: To provide an angle measuring instrument having a small and simple structure, capable of accurately measuring the angle of a recessed corner part of a measurement target from the outside opposite to the opening side. SOLUTION: In this angle measuring, a corner part contact member 11 which is in direct or indirect contact with the recessed corner part Wa of the measured object on the outside opposite to the inside that is the opening side of the recessed corner part Wa, to generate displacement according to an opening angle of the recessed corner part Wa. The displacement of the corner part contact member 11 is detected by an induction type position detection means.

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