Class / Patent application number | Description | Number of patent applications / Date published |
310120190 | Having structure to facilitate control (e.g., position detector) | 22 |
20090152961 | Linear guide with an integrated linear motor - A linear guide with an integrated linear motor, the linear guide having a stationary support extending in a guide direction, a table movable in the guide direction and a linear motor. The linear motor includes 1) a movable element connected with the table, 2) a stationary element connected with the stationary support and contactless bearings between the stationary support and the table and 3) an electromagnetic positioner based on electromagnetic interaction for positioning the table transversely in relation to the guide direction. The linear guide includes an integrated position-measuring system having a scale and scanning heads which detect a position of the table in the guide direction and a deviation direction, which lies transversely in relation to the guide direction and parallel in relation to a plane of an air gap of the linear motor. The electromagnetic positioner acts in such a way so that the table is positioned in the deviation direction. | 06-18-2009 |
20090243402 | POSITION MEASUREMENT USING MAGNETIC FIELDS - A position sensing system for positioning a linear motor that includes a stator and an armature having magnets, the armature moving relative to the stator along a path. A sensor determines a position of the armature based on measurements of a magnetic field generated by the magnets of the armature. | 10-01-2009 |
20100072830 | Apparatus for determination of the axial position of the armature of a linear motor - An apparatus ( | 03-25-2010 |
20100102644 | INTEGRATED LINEAR BRUSHLESS DC MOTOR - A linear brushless DC motor uses a movable coil assembly, which includes at least one coil, an amplifier and a motor controller, that is configured to move relative to a stationary base assembly. The coil, the amplifier and the motor controller are assembled so that the coil, the amplifier and the motor controller are collectively displaced when the movable coil assembly is moved relative to the stationary base assembly. | 04-29-2010 |
20100141053 | STATOR FOR A LINEAR MOTOR - A stator for a linear motor is described. The stator has a stator member with a coil arrangement, a connecting member with external terminals, a sensor arrangement having at least one Hall sensor, and terminals for the sensor arrangement, as well as a holding member. The holding member is subdivided into a connecting member insertion portion and a stator member insertion portion and has holding devices for disposing the stator member and the connecting member stationarily, releasably and in an accurate position with regard to each other. | 06-10-2010 |
20110050007 | MOVING BODY SYSTEM AND METHOD OF DETERMINING INITIAL POSITION OF MOVING BODY - In a moving body system, a movable element of a linear motor is provided on a moving body, and stationary elements of the linear motor and position sensors are provided on the ground. The stationary elements are arranged between the position sensors to enable determination of a rough position of the movable element based on a change of inductance resulting from interaction with a magnet array. An initial position of the moving body when a power supply for the moving body system is turned on is determined based on the rough position of the movable element relative to the stationary element and a signal from the position sensor. | 03-03-2011 |
20110084559 | Direct Linear Drive, Drive Device and Actuating Device - The invention relates to a direct linear drive having a stator ( | 04-14-2011 |
20110175462 | LINEAR DRIVE - The present invention relates to an electric linear drive, particularly for a rotary-lifting motor. Such a linear drive includes a winding system including a plurality of wound coils which are arranged to be coaxial to each other and successive in axial direction, and a magnet system which is movable in axial direction relative to the winding system and includes a plurality of axially successive permanent magnets. The winding system is normally fed by a controlled converter. The coils of the winding system and the permanent magnets of the magnet system define an air gap thereinbetween. Furthermore, a sensor is provided for detecting the relative movement of winding system and magnet system and for detecting the relative position of the two systems, the sensor being used for scanning a timing ruler mounted on the outer circumference of the magnet system. The magnet system is radially arranged in the interior of the winding system, and the timing ruler circumferentially extends only over a portion of the circumference of the magnet system. According to the invention it is either provided that the coils of the winding system have a radial bulge for the timing ruler, or that the magnet system is eccentrically arranged relative to the winding system, or that the magnet system includes a radial bulge in the form of a flat portion for the timing ruler. | 07-21-2011 |
20120223597 | MULTIPLE DIMENSION POSITION SENSOR - An apparatus including a controller, a workpiece transport in communication with the controller having a movable portion and a transport path, and a multi-dimensional position measurement device including at least one field generating platen attached to the movable portion and at least one sensor group positioned along the transport path and in communication with the controller, the field generating platen is configured for position measurement and propelling the movable portion, each sensor in the at least one sensor group is configured to provide but one output signal along a single axis corresponding to a sensed field generated by the at least one field generating platen and the controller is configured calculate a multi-dimensional position of the movable portion based on the but one output signal of at least one of the sensors in the at least one sensor group, the multi-dimensional position including a planar position and a gap measurement. | 09-06-2012 |
20130033125 | LINEAR MOTOR ARMATURE AND LINEAR MOTOR - A linear motor armature according to embodiments includes an armature core, supporting teeth, and a detecting unit. The armature core includes main teeth. The supporting teeth are provided on stroke direction ends of the armature core. The detecting unit detects a position of the armature core. Moreover, the detecting unit is provided at a position overlapping with the supporting teeth in the stroke direction. | 02-07-2013 |
20130057086 | Magnetic Device - A magnetic device includes at least one stator and at least one translator. The translator is moveable in relation to the stator in a translator moving direction. The translator moves in a direction oriented towards the stator. The at least one stator and the translator are arranged along an axis. The magnetic device includes a control device, the control device includes a device for controlling a distance r≧0 (r being equal to or greater than 0) between the translator and the stator in relation to the force generated between the stator and the translator when the magnetic device is in operation. The translator is movable in relation to the stator in the translator moving direction along a linear translator movement axis. The at least one stator and the translator are oriented along the translator moving axis. | 03-07-2013 |
20130106202 | ACTUATOR AND ACTUATOR COOLING METHOD | 05-02-2013 |
20130175887 | LINEAR ACTUATOR - A linear actuator is provided with an outer tube and an inner tube inserted in the outer tube so as to be free to slide. The linear actuator is also provided with a rod erected at a central axis part of the inner tube and forming an annular space between the rod and the inner tube, a rod guide provided at an extreme end of the rod in sliding contact with an inner surface of the outer tube, a plurality of permanent magnets arranged along an axial direction in the rod, and a plurality of coils retained by the outer tube so as to face the permanent magnets. A cross-sectional area of an outer periphery of the inner tube along which the outer tube slides and a cross-sectional area of an inner periphery of the outer tube along which the rod guide slides are set to be equal. | 07-11-2013 |
20130270927 | LINEAR ACTUATOR - A linear actuator is provided with an outer tube and an inner tube inserted in the outer tube so as to be free to slide axially. A rod is erected at a central axis part of the inner tube, forming an annular space between the rod and the inner tube. Permanent magnets are retained along an axial direction in the rod, and a holder is fixed to the outer tube for retaining coils which are disposed face to face with the permanent magnets. The holder includes a cylindrical coil holding portion inserted in the annular space such that an extreme end of the cylindrical coil holding portion can move further into and backward from the annular space. The coil holding portion retains the coils within an inner peripheral surface, and a flange portion joined directly to a proximal end of the coil holding portion is fixed to the outer tube. | 10-17-2013 |
20140203669 | COMPACT POSITIONING ASSEMBLY COMPRISING AN ACTUATOR AND A SENSOR BUILT INTO THE YOKE OF THE ACTUATOR - A positioning assembly includes a position sensor and a magnetic actuator, the actuator including a stator assembly formed of at least one ferromagnetic stator bearing at least one electric power supply coil and a yoke able to move relative to the stator assembly, the actuator having a geometry that is of revolution or periodic about an axis referred to as the main axis passing through the yoke, the sensor having at least one permanent magnet secured to the yoke and at least one magneto-sensitive probe that is fixed in relation to the magnet and able to measure the amplitude or direction of the magnetic field emitted by the magnet. The yoke has an interior recess including the main axis of the actuator, and the magnet is positioned inside the recess and secured to the yoke. | 07-24-2014 |
20140252889 | TUBULAR LINEAR MOTOR WITH MAGNETOSTRICTIVE SENSOR - A motor includes a position-sensing magnetostrictive element that extends along a stator bore. A slider slides in the stator bore and includes a stack of motor magnets. The stack includes a first stack end that provides a magnetic field pattern that magnetizes a region of the magnetostrictive element. The motor includes shield elements such as a non-magnetic shield tube and a magnetic flux diverter. | 09-11-2014 |
20140292112 | LINEAR MOTOR AND LINEAR CONVEYANCE DEVICE - A linear motor is equipped with sensor substrates that are attached to main motor bodies in the X-direction along a conveyance path in such a manner that the sensor substrates are accommodated within the dimensions of the main motor bodies. Each sensor substrate is equipped with a sensor for outputting an A-phase position detection signal upon detecting a slider, a sensor for outputting a B-phase position detection signal, and a position detection signal summer unit. Each position detection signal summer unit adds up, for A-phase and for B-phase, position detection signals that are output from the position detections unit of the adjoining substrates provided on either side of the relevant substrate. | 10-02-2014 |
20150022030 | LINEAR MOTOR - A linear motor comprises a stator ( | 01-22-2015 |
20150054358 | DEVICE FOR REAR ABUTMENT DETECTION ON A LINEAR ACTUATOR - The invention relates to a linear actuator including a driver for driving a movable assembly between a rest position and an active position, and to an electronic module for controlling the driver. The actuator further includes a damper that damps the return to the rest position of the movable assembly. The electronic module is configured to acquire a representative quantity of the instantaneous force provided by the driver and of the time derivative of this quantity. The electronic module is also able to control the interruption of the operation of the driver if the derivative exceeds a first predetermined value during the phase for returning the movable assembly to the rest position. | 02-26-2015 |
20150340939 | Position Controlled Electrodynamic Linear Motor - A linear drive for a miniaturized optical system, as used for example in an endoscope, includes a stator and an armature. The stator has a coil with two stator pole shoes arranged in axial direction, and two magnetic field sensors arranged at the outer side of the stator pole shoes. The armature has permanent magnets which are polarized in opposite directions, and a center armature pole shoe between the two permanent magnets, and an armature pole shoe at each side of the permanent magnet, opposite to the center armature pole shoe in axial direction. The magnetic field of the outer armature pole shoe goes completely or only in part, dependent from the armature position, through the magnetic field sensor and thus generates a position-dependent signal. This signal can be used for measuring and/or controlling the position of the armature. | 11-26-2015 |
20150349618 | LINEAR MOTOR SYSTEM WITH POWERED CURVILINEAR TRACK SECTIONS - A method for manufacturing a curvilinear track section including: forming a curvilinear track portion; cutting out a first slot grouping from an exterior edge of the curvilinear track portion, wherein the first slot grouping is at a first predetermined angle; cutting out a second slot grouping from the exterior edge of the curvilinear track portion, wherein the second slot grouping is at a second predetermined angle; and inserting motor units into the first and second slot groupings. A curvilinear track section having: a curvilinear track portion; a first slot grouping formed in an exterior edge of the curvilinear track portion, wherein the first slot grouping is at a predetermined angle relative to the exterior edge; a second slot grouping formed in the exterior edge of the curvilinear track portion, wherein the second slot grouping is at a second predetermined angle; and motor units inserted into the first and second slot groupings. | 12-03-2015 |
20160146891 | Position-Detection System - A position-detection system for a drive having a rotor, which can move along a path, comprises an encoder unit, a signal-detection unit and a signal-processing device. The encoder unit or the signal-detection unit is arranged on the rotor, and the respective other unit is arranged along the path. Furthermore, the signal-processing device is designed to generate a first position signal and a second position signal on the basis of a relative position of the encoder unit and signal-detection unit. The signal-processing device is designed to determine a longitudinal position of the rotor along the path on the basis of phase values of the first and second position signals. Furthermore, the signal-processing device is designed to determine a distance, directed transversely with respect to the path, between the encoder unit and the signal-detection unit, on the basis of amplitude values of the first and second position signals, and to detect an operating state of the drive on the basis of the distance. | 05-26-2016 |