-
公开(公告)号：US12092498B2
公开(公告)日：2024-09-17
申请号：US17866369
申请日：2022-07-15
发明人： Shunichi Akama , Shiro Fukuda , Yasunori Murayama
CPC分类号： G01D5/2455 , G01D5/2415 , G01D5/245 , G01D5/2497 , G01D5/347
摘要： An absolute encoder configured to, when a rotation range of a measurement target member is limited by a brake mechanism, generate an AB-phase signal and a Z-phase signal for calculating a rotation angle of the measurement target member. The absolute encoder includes a brake mechanism, a plurality of Z-phase-signal-detection-target portions each having a Z-phase-signal-rise-detection-target portion and a Z-phase-signal-fall-detection-target portion, a plurality of AB-phase-signal-detection-target portions each located between a Z-phase-signal-rise-detection-target portion and a Z-phase-signal-fall-detection-target portion that are adjacent to each other in a circumferential direction, to thereby form a plurality of restriction ranges each including at least one of the Z-phase-signal-rise-detection-target portions and at least one of the Z-phase-signal-fall-detection-target portions. An interval in the circumferential direction between a Z-phase-signal-rise-detection-target portion and a Z-phase-signal-fall-detection-target portion that are adjacent to each other in the circumferential direction is different among the plurality of restriction ranges.
-
公开(公告)号：US12072212B2
公开(公告)日：2024-08-27
申请号：US17900633
申请日：2022-08-31
申请人： Mitutoyo Corporation
发明人： Ted Staton Cook
CPC分类号： G01D5/2053 , G01B7/003 , G01D5/2497
摘要： An inductive type position encoder includes a scale, a detector portion and a signal processor. According to one aspect, field generating elements and sensing elements of the detector portion are provided on opposite sides of the scale such that at least part of the scale is between the field generating elements and the sensing elements (transmissive configuration). According to another aspect, the scale comprises a periodic scale pattern including signal modulating elements that are disposed along a scale direction, which is not parallel to a measuring axis direction of the encoder and is slanted at a scale angle relative to the measuring axis direction, such that there is a corresponding y-direction displacement for a given x-direction displacement of the encoder. These aspects of the disclosure make it possible to design a very compact inductive type position encoder, including one capable of indicating an absolute position along the scale.
-
公开(公告)号：US12000716B2
公开(公告)日：2024-06-04
申请号：US17780682
申请日：2020-11-27
发明人： Manuel Plainer , Andreas Weber , Alexander Almeder
IPC分类号： G01D5/14 , G01D5/244 , G01D5/245 , G01D5/249 , G05B1/01 , G06F17/17 , H02K11/215 , H02K41/03 , H02P6/00
CPC分类号： G01D5/145 , G01D5/2449 , G01D5/2451 , G01D5/249 , G05B1/01 , G06F17/17 , H02K11/215 , H02K41/031 , H02P6/006
摘要： For determination of the position of a movable component with a plurality of position magnets relative to a stationary component with a plurality of position sensors, it is provided that the sensor responses are detected for a group of position sensors in the region of the movable component, sensor model responses of the group of position sensors are determined from a sensor model for a plurality of assumed different relative positions of the movable component relative to the stationary component, the sensor model responses are compared with the sensor responses and the assumed relative position with the smallest deviation between the sensor model responses and the sensor responses is used as the relative position of the movable component.
-
公开(公告)号：US11994415B2
公开(公告)日：2024-05-28
申请号：US17371181
申请日：2021-07-09
申请人： WITTENSTEIN SE
发明人： Tobias Gromes , Ralf Kruse , Ingolf Gröning
IPC分类号： G01D5/249 , G01D5/14 , G01D5/16 , H02K7/00 , H02K11/215
CPC分类号： G01D5/2497 , G01D5/145 , G01D5/16 , H02K7/003 , H02K11/215 , H02K2211/03
摘要： Encoder system (1) for a drive, including a revolution counter having a Wiegand sensor (23) which is disposed on a stationary part (13) of the encoder system (1), and at least two pairs of magnets which in the revolving direction (5) are disposed at different positions on a rotatable part (15) of the encoder system (1), wherein the pairs of magnets comprise in each case a first magnet (35) and a second magnet (37); and a position encoder having a magnetic field sensor (43) which is disposed on the stationary part (13), and a magnetic strip (47) which is disposed on the rotatable part (15); wherein, in each pair of magnets, the first magnet (35), the magnetic strip (47) of the position encoder, and the second magnet (37) in terms of a first direction are disposed in this sequence on the rotatable part (15).
-
公开(公告)号：US20240068841A1
公开(公告)日：2024-02-29
申请号：US17900633
申请日：2022-08-31
申请人： Mitutoyo Corporation
发明人： Ted Staton Cook
CPC分类号： G01D5/2053 , G01B7/003 , G01D5/2497
摘要： An inductive type position encoder includes a scale, a detector portion and a signal processor. According to one aspect, field generating elements and sensing elements of the detector portion are provided on opposite sides of the scale such that at least part of the scale is between the field generating elements and the sensing elements (transmissive configuration). According to another aspect, the scale comprises a periodic scale pattern including signal modulating elements that are disposed along a scale direction, which is not parallel to a measuring axis direction of the encoder and is slanted at a scale angle relative to the measuring axis direction, such that there is a corresponding y-direction displacement for a given x-direction displacement of the encoder. These aspects of the disclosure make it possible to design a very compact inductive type position encoder, including one capable of indicating an absolute position along the scale.
-
公开(公告)号：US11885828B2
公开(公告)日：2024-01-30
申请号：US17582194
申请日：2022-01-24
申请人： PIXART IMAGING INC.
发明人： Chung-Min Thor , Kuan-Choong Shim
CPC分类号： G01P3/36 , G01P3/486 , G01D5/249 , G01D5/34 , G01D5/34715
摘要： There is provided an optical encoder including a phase shifter circuit and a multiple hysteresis comparators. The phase shifter circuit receives four input signals, and outputs multiple phase shifted signals based on the four input signals. Each of the multiple hysteresis comparators uses a changeable operation hysteresis level to compare a couple of phase shifted signals among the multiple phase shifted signals, wherein the changeable operation hysteresis level is determined corresponding to a signal frequency of the four input signals.
-
公开(公告)号：US11874144B2
公开(公告)日：2024-01-16
申请号：US16940636
申请日：2020-07-28
申请人： Li Lin
发明人： Li Lin , Tai Tylor Lin
CPC分类号： G01D5/347 , G01D5/2497
摘要： A displacement measuring system is disclosed. The system may implement a code carrier formed from a data storage medium which includes a relative displacement measurement code channel which is an arrangement of pit lines and bump lines. A composite subsystem may include an optical laser assembly, a signal processing unit, and a power driver, and can scan and decode the code carrier by focusing a laser beam on the code carrier and obtaining a group of radio frequency electric signals from the reflection of the laser beam which represents the bumps and pits of the code carrier. A central control and signal output unit can process the electric signals produced by multiple composite subsystems and output information representing incremental and absolute displacement.
-
公开(公告)号：US11874143B2
公开(公告)日：2024-01-16
申请号：US17838922
申请日：2022-06-13
发明人： Brian Coyne , Yuki Katoh
CPC分类号： G01D5/2497 , G01B7/003 , G01B7/30 , G01D5/145
摘要： An exemplary encoder assembly includes a substrate, a first encoder, and a second encoder. The substrate has two or more position sensors, each position sensor being configured for detecting a rotary position of a shaft or other rotating element of a machine. The first encoder includes at least one first position sensor of the two or more position sensors. The at least one first position sensor is disposed on the substrate for off-axis alignment with the shaft or other rotating element of the machine. The second encoder includes a second position sensor of the two or more position sensors, the second position sensor being disposed on the substrate for on-axis or off-axis alignment with the shaft or other rotating element of the machine. Each position sensor is configured to detect different or common signal types, and a signal type of the second position sensor excludes optical signals.
-
公开(公告)号：US20230243674A1
公开(公告)日：2023-08-03
申请号：US18033274
申请日：2021-10-21
申请人： Psiquantum, Corp.
CPC分类号： G01D5/2492 , G02B6/12004 , G01D5/2497 , G06N10/40
摘要： A temporal multiplexing circuit can include a set of waveguides having different delay lengths, with the waveguides arranged according to a de Bruijn sequence. The set of waveguides can be coupled to a cyclic switch that selectably delivers a group of unsynchronized photons (or other signal pulses) from a contiguous group of input paths into a contiguous group of the delay waveguides. Similarly, a spatial multiplexing circuit can include a set of pairs of waveguides that each implement mode swapping of photons, with different swap distances, with the pairs of waveguides arranged according to a de Bruijn sequence. The set of waveguides can be coupled to a cyclic switch that selectably delivers a group of photons from a set of input paths into a contiguous group of the mode-swap waveguides. Temporal and spatial multiplexing can be combined in a switching network.
-
公开(公告)号：US20230175872A1
公开(公告)日：2023-06-08
申请号：US17808546
申请日：2022-06-24
发明人： Chien-Tsung CHEN , Shih-Hao LU
IPC分类号： G01D5/244 , G06F3/038 , G06F3/0362 , G01D5/249
CPC分类号： G01D5/24495 , G06F3/038 , G06F3/0362 , G01D5/2497
摘要： The present disclosure provides an input device and control method thereof. The input device includes a roller module, a relative encoder, an absolute encoder, and a processor. The control method includes: obtaining current angle data outputted by the absolute encoder according to a target phase of at least one signal outputted by the relative encoder; obtaining a current position number corresponding to the current angle data according to the current angle data; calculating a number difference according to the current position number and a previous position number; and outputting the number difference.
-
-
-
-
-
-
-
-
-
搜索结果
495 条记录 (耗时 0.022 秒)
