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11. 发明专利

JPS6247501A ABSOLUTE ROTATIONAL POSITION DETECTING DEVICE 失效
公开(公告)号：JPS6247501A
公开(公告)日：1987-03-02
申请号：JP18790185
申请日：1985-08-27
申请人： S G KK
发明人： ICHIKAWA WATARU , MATSUKI YUJI
IPC分类号： G01B7/00 , G01B7/30 , G01D5/20 , G01D5/243 , G01D5/245 , H03M1/00
摘要： PURPOSE:To detect with a high resolution an absolute rotational position extending over the whole periphery of one rotation, by providing two kinds of patterns on a rotor part. CONSTITUTION:In accordance with an opposed area of a good conductor rectangular piece 3a of a rotor part 3 to be end part of each phase pole part of a detecting head 1, an eddy current flows to its part, and a magneto-resistance variation caused by this eddy current loss occurs in a magnetic circuit of pole parts 1A-1D. In accordance with a value of this magneto-resistance, a relative rotational position of the rotor part 3 to the head 1 is detected by an absolute value within an angle range of one pitch of the first pattern. Subsequently, when a magnetic flux of pole parts 2A-2D of a detecting head 2 passes through a part of a spiral wire 3b, an eddy current flows, and by a magneto-resistance value corresponding to its current, a rotational position of the rotor part 3 to the head 2 is detected by an absolute value within a range of one cycle of a variation of the second pattern. By combining these first and second rotational position detecting data, an absolute rotational position detecting data of a high resolution can be obtained extending over a wide range by a vernier theory.

12. 发明专利

JP2002190241A SENSOR FOR PROXIMITY SWITCH AND PROXIMITY SWITCH 失效
公开(公告)号：JP2002190241A
公开(公告)日：2002-07-05
申请号：JP2000389253
申请日：2000-12-21
申请人： KAWASAKI STEEL CO , S G KK
发明人： ICHII YASUO , MASUNO YASUHIKO , ICHIKAWA WATARU , TAKATSUKA TOMOHITO
IPC分类号： G01V3/10 , H01H36/00 , H03K17/95
摘要： PROBLEM TO BE SOLVED: To realize a proximity switch which is superior in its environmental resistance and little influence to its characteristic is imparted even when an extension cable of a few hundred meters is connected to it. SOLUTION: In the proximity switch detecting approach of a magnet 22 to a sensor 8, a sensor part 10 is constituted by having a conducting wire wrapped around a small piece of magnetic material 14 in a coil 18 state through insulating material 16, both edges of the conducting wire are connected to a low frequency oscillating circuit 52 that is

13. 发明专利

JP2554472B2 失效
公开(公告)号：JP2554472B2
公开(公告)日：1996-11-13
申请号：JP15624486
申请日：1986-07-04
申请人： S G KK
发明人： ICHIKAWA WATARU , TANAKA SHUICHI
IPC分类号： H02K11/00 , G01B7/00 , G01B7/30 , G01D5/245

14. 发明专利

JPH07657A SYNCHRONOUS CONTROL METHOD OF SEWING MACHINE 失效
公开(公告)号：JPH07657A
公开(公告)日：1995-01-06
申请号：JP17203993
申请日：1993-06-21
申请人： TOKAI IND SEWING MACHINE , S G KK
发明人： TAJIMA IKUO , ICHIKAWA WATARU , OSHIE NAOMASA , FUJIURA MITSUHIRO , UENISHI KOJI
IPC分类号： B23Q15/00 , D05B25/00 , D05B69/00 , D05C5/04
摘要： PURPOSE:To remove the positional deviation between respective driving mechanisms changed according to embroidery speed, in an embroidery sewing machine having a plurality of driving mechanisms driven by independent driving sources, and hold the positional relation between respective driving mechanisms constant. CONSTITUTION:An embroidery sewing machine has a first driving means formed of a main spindle motor 4 for simultaneously rotating and driving a hook mechanism 91, a needle bar mechanism 6, and a needle thread take-up mechanism 51; and a second driving means formed of a frame driving means 8 including an X, Y-axial servo motor for driving an embroidery frame mechanism 82 in X, Y-axial directions synchronously with the operating position of the needle bar mechanism 6. The main spindle motor 4 has a first rotating position sensor 41, and the X, Y-axial servo motor has a second rotating position sensor. At embroidery work, a correcting deviation is generated according to the operating speed of the main spindle motor 4, a prescribed position according to the detected position of the first rotating position sensor 41 is outputted as the command operating position of the frame driving means 8, and the frame driving means 8 is operated with a one obtained by correcting this position with the correcting deviation.

15. 发明专利

JPH065161B2 失效
公开(公告)号：JPH065161B2
公开(公告)日：1994-01-19
申请号：JP17414084
申请日：1984-08-23
申请人： S G KK
发明人： ICHIKAWA WATARU , MATSUKI JUJI
IPC分类号： G01D5/20 , G01B7/00

16. 发明专利

JPH0552588A DETECTION DEVICE OF ROTATIONAL POSITION 失效
公开(公告)号：JPH0552588A
公开(公告)日：1993-03-02
申请号：JP23886191
申请日：1991-08-27
申请人： S G KK
发明人： TANAKA SHUICHI , ICHIKAWA WATARU
IPC分类号： G01B7/00 , G01B7/30 , G01D5/20 , G01D5/22 , G01D5/245
摘要： PURPOSE:To reduce installation area and installation volume as far as possible even in case that a detection device of rotational position is put into a machine and the like. CONSTITUTION:Primary coils 1A to 1D generate magnetic flux by excitation by predetermined AC signal. A stator part 11a is of a plate shape and independently has a plurality of the primary coils 1A to 1D circumferentially, which are arranged so as to generate magnetic flux of the primary coils 1A to 1D along to a direction of rotational axis. Rotor 11b is provided relatively and displaceably against the primary coils 1A to 1D so that magnetic resistance effect may change along with the magnetic flux generated from the primary coils 1A to 1D. Therefore, when the rotor 11b rotates, the magnetic resistance effect changes according to relative positional relationship between the primary coils and the rotor provided on the stator part 11a. The change of magnetic resistance effect affects exciting AC signal flowing through the primary coils and therefore, by detection of the AC signal of the primary coils 1A to 1D, the relative positional relationship between the primary coils 1A to 1D and the rotor 11b, that is rotational position of the rotor, can be detected.

17. 发明专利

JPS6312914A ROTARY POSITION DETECTOR 失效
公开(公告)号：JPS6312914A
公开(公告)日：1988-01-20
申请号：JP15624486
申请日：1986-07-04
申请人： S G KK
发明人： ICHIKAWA WATARU , TANAKA SHUICHI
IPC分类号： H02K11/00 , G01B7/00 , G01B7/30 , G01D5/245
摘要： PURPOSE:To eliminate a phase error component by arranging grooves of two poles of a stator shifted by a prescribed angle so that they face rotor teeth in mutually opposite phase relation, and putting output signals corresponding to the grooves together differentially. CONSTITUTION:The stator 1 has plural poles provided at a prescribed interval in a circumferential direction and a rotor 2 which faces the poles across a gap has plural projection and recess teeth arranged at equal intervals in the circumferential direction. Then the respective poles are varied in magnetic resistance by variation in the correspondence between the respective poles of the stator 1 and respective teeth as the rotor 2 rotates, and currents are induced accordingly at coils L1 and L2 provided on the side of the stator 1. This stator 1 is provided with poles A1-A6 and B1-B6 in pole groups A and B arranged at equal intervals. Then, the respective poles in the pole groups A and B shift by a prescribed angle corresponding to the teeth of the rotor 2 and correspond to each other in mutually opposite phase relation. Then the output signals of the groups are synthesized differentially into an output signal which excludes the influence of a phase error component upon an AC signal phase.

18. 发明专利

JPS6246202A APPARATUS FOR DETECTING ROTARY POSITION 失效
公开(公告)号：JPS6246202A
公开(公告)日：1987-02-28
申请号：JP18591185
申请日：1985-08-26
申请人： S G KK
发明人： ICHIKAWA WATARU , MATSUKI YUJI
IPC分类号： G01B7/30 , G01B7/00 , G01D5/20 , G01D5/243
摘要： PURPOSE:To contrive to miniaturize a rotor part and to simplify processing, by providing a stator part equipped with a winding means and the rotor part relatively rotatable and displaceable to said stator part and arranging a conductor to said rotor part. CONSTITUTION:A stator part 1 contains pole parts 1A-1D and primary and secondary windings W1, W2 are wound around each pole part. A rotor part 2 is arranged within the space surrounded by the end parts of the pole parts 1A-1D. The rotor part 2 has a cylindrical substrate 2a and a conductor pattern 2b provided to the side surface thereof. An eddy current flows corresponding to the approach degree of the pattern 2b to the magnetic field of each of phases A-D and the change in magnetic resistance due to the loss of the eddy current is generated in the magnetic circuit of each phase. Therefore, the AC signal corresponding to the angle of rotation of the rotor part 2 is induced in the windings W2 of the phases A-D. Because the eddy current has a property flowing to the vicinity of the surface of the conductor, the pattern 2b requires no large thickness. That is, the pattern 2b of the thin conductor part can be easily formed to the substrate of the rotor part 2 by surface processing treatment technique such as plating.

19. 发明专利

JPS61228845A ROTARY ULTRASONIC SCANNER 失效
公开(公告)号：JPS61228845A
公开(公告)日：1986-10-13
申请号：JP6918085
申请日：1985-04-03
申请人： S G KK , TOSHIBA CORP
发明人： ICHIKAWA WATARU , TODA JITSUO , AKAMA AKIFUMI , KIKUCHI SUKESHICHI
IPC分类号： A61B8/14 , A61B8/00 , G01N29/06

20. 发明专利

JP2002199780A MOTOR DRIVER FOR CONTINUOUS CASTING MACHINE 失效
公开(公告)号：JP2002199780A
公开(公告)日：2002-07-12
申请号：JP2000401941
申请日：2000-12-28
申请人： S G KK
发明人： ICHIKAWA WATARU , FUNABIKI YOICHI , HIROHASHI SEIJI , OKAZAKI AKIHITO
IPC分类号： B22D11/10 , B22D11/16 , B22D41/20 , B22D41/38 , H02P7/00 , H02P8/00 , H02P8/36 , H02P8/38 , H02P25/08 , H02P29/00 , H02P5/00
摘要： PROBLEM TO BE SOLVED: To make the effective use of existing appliances, without discarding them as well as improving reliability, when the driving source of a servo- cylinder mounted on a continuous casting machine is changed from a stepping motor into a synchronous servo motor, which is controlled in close-loop manner. SOLUTION: A motor driver 16 involves a current control part 18 for supplying respective phases of excitation currents to a five-phase stepping motor 12 and a four-phase servo motor 14, an open control part 21 for open-loop control of the stepping motor 12 and the servo motor 14, a position detecting part 19 which is needed for close-loop control of the servo motor 14, a close control part 20, and a switching control part 22 conducting a prescribed switching operation, according to the type of a motor connected to a terminal 17. The switching control part 22 switches to an open-loop control, when something abnormal occurs in a signal from a detector 15 with the servo motor 14 under a close-loop control.

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