Abstract: The invention discloses a multi-sensor position measurement system mainly comprising a base, a carrier and a modular component, the carrier is provided with a first signal array and a second signal array. The modular component is disposed on the base, and comprises two Hall sensors for sensing magnetic field changes of the first signal array, two magnetoresistive sensors for sensing magnetic field changes of the second signal array, and a first state sensor having a marking unit disposed on the carrier and a sensitive element disposed on the base for sensing signals generated by the marking unit for subsequent reference signal generation, connection of measurement results between other sensors, and identification of homing direction.

Abstract: In an improved structure of high-frequency rotary mechanism, permanent magnets with an odd number of at least five are disposed in each pole of a motor rotor, one of the permanent magnets serves as a center, the other permanent magnets are symmetrically connected in series on two sides of the center, and adjacent ends of the permanent magnets located on two sides are made as a same magnetic pole, so that the adjacent ends are separated without directly abutting against each other by a repulsion distance under a repulsive effect of the same pole, relative positions between the adjacent permanent magnets are maintained by the repulsive effect, and structures of position limiting and support in the prior art for positioning are not required, thereby avoiding centrifugal force of high-speed rotation to act on the structures of position limiting and support, and reducing negative impact on a rotor iron core.

Abstract: In a quick measurement module provided by the present invention, a first distance sensing unit and a second distance sensing unit are provided individually on a movable seat, so that when the movable seat is displaced along a linear shifting axis, the first distance sensing unit senses the distance from the first reference plane, and meanwhile, the second distance sensing unit senses the distance from the second reference plane, so as to sense the linearity accuracy in movement of the movable seat with respect to the first reference plane and the second reference plane. The first reference plane and the second reference plane are spaced apart by an angle other than a right angle, so that the linearity accuracy in movement in the two different planes, such as the horizontal linearity accuracy and vertical linearity accuracy, of the movable seat can be obtained through sensing.

Abstract: The invention discloses a position measuring mechanism and a measuring method of a linear motion system in which two sensors are respectively disposed on two sides of a stator, in addition to allowing a moving portion to perform bidirectional movement, under a premise of not increasing a quantity of the sensors, a measuring range of the sensors can be calculated based on information measured by the sensors themselves. Furthermore, the invention further combines measurement sections respectively measured by the two sensors to ensure an accuracy of position feedback, instead of the conventional technique using an operational method of combining sinusoidal and cosine signals.

Abstract: A high-frequency rotating structure provided by the invention has an annular rotating element with a quincuncial outer periphery, a plurality of radially arranged accommodating grooves respectively disposed in an annular body of the rotating element, a plurality of hole-shaped magnetic barrier spaces respectively disposed in the annular body, and respectively communicated with one of two ends of each of the accommodating grooves, and a plurality of magnetic assemblies respectively embedded in each of the accommodating grooves. A shortest first distance A between a groove wall of each of the two ends of each of the accommodating grooves and an outer annular surface of the body, and a shortest second distance B between a hole wall of each of the magnetic barrier spaces and the outer annular surface of the body are defined by the following formula 1: ? = A B × 1 ? 0 ? 0 ? % , 1 ? 2 ? 2 ? % ? ? ? 9 ? 0 ? % .

Abstract: A position sensing mechanism provided by the invention comprises an encoding element as a sensing signal source, a reading element for sensing signals of the signal source, and a processing unit for receiving and analyzing sensing signals output by the reading element, the position sensing mechanism has a main technical feature lying in a magneto-resistive unit in the reading element for sensing signals of the signal source being a tunneling magneto-resistor (TMR), and two layers of magnetic moments of a reference layer and a free layer of the tunneling magneto-resistor being perpendicular to each other, and in the reference layer and the free layer with the magnetic moments being perpendicular to each other, the magnetic moment of one of the layers is parallel to a film surface, and the magnetic moment of the other layer is perpendicular to the film surface.

Abstract: A dynamic displacement error compensation system by which detection error information obtained based on calibration detection of first and second axes, is respectively made into first and second compensation tables for compensating displacement on the axes by using positional information of the axes as variables, the first compensation table is stored in a first driver of a first motor device for driving a first moving element to move linearly on the first axis, the second compensation table is stored in a second driver of a second motor device for driving a second moving element to move linearly on the second axis, the drivers simultaneously or successively obtain a first dynamic positional information of the first moving element on the first axis and a second dynamic positional information of the second moving element on the second axis, and the moving elements are respectively displaceably compensated according to the compensation tables.

Abstract: A rotor apparatus for a permanent-magnet motor has the main technical feature of a ring rotor with its magnets arranged according to the Halback magnetic ring array. In addition, for a distance between magnets of a parallel array and the outer ring edge of the rotor, and for a diameter difference between the inner and outer diameters of the ring rotor, a ratio between said distance/said diameter difference is between 0.43 and 0.48.

Abstract: The present invention provides a cooling mechanism between a linear motor rotor and a platform coupled thereto, characterized essentially in that a cooling portion is provided between the rotor and the platform, and further in that heat transfer is blocked between the cooling portion and the platform, thereby preventing heat received by the cooling portion during heat dissipation from being transferred to the platform, so as to ensure the precision of the platform.

Abstract: An index grating of an optical encoder provided by the invention has a main technical feature of increasing a ratio of light-transmissible area of a grating per unit area, thereby increasing a light source utilization efficiency and a signal intensity, and reducing light-blocking ratio caused by dust and other foreign matters, thereby reducing a degree of influence on light intensity, so as to improve a sensing precision of the optical encoder.

Abstract: A permanent-magnet spindle motor includes a rotor in which a plurality of magnet units have a specific spatial configuration that results in a concentrated magnetic flux and consequently a high rotation speed. Each magnet unit has two first magnets and two magnetic barrier spaces, wherein the first magnets are provided in the tubular rotating shaft of the rotor mirror-symmetrically with respect to an axis of mirror symmetry defined by a diameter of the rotating shaft, and wherein each of the magnetic barrier spaces is formed as a hole, penetrates the rotating shaft along the axial direction thereof, is open at the two axial ends of the rotating shaft, is located between the outer periphery of the rotating shaft and one of the first magnets, and is adjacent to the distal end (with respect to the axis of mirror symmetry) of the one of the first magnets.

Abstract: A coil insulation structure for a rotating machine provided in the present invention is based on a conventional insulation technology. In particular, tooth portions of an iron core in which coil windings are inserted have a straight tooth structure without a shoe portion, and a component with an insulation effect is further added at a position of an opening of a groove in which the coil winding is located, so that an insulation effect is improved, and at the same time an added insulation component is used to ensure a thickness and a size of an inner layer located at a position adjacent to an air gap of a motor when the coil winding is encapsulated, thereby improving product quality.

Abstract: An optical positioning measurement device includes a light source module operable to emit light, an encoder module and a sensor module. The sensor module is configured to output electric signals relating to luminous flux of light received thereby via the encoder module. The encoder module having a first incremental code portion, a second incremental code portion and an absolute code portion. The first incremental code portion includes multiple first incremental code patterns that are equally distributed. The second incremental code portion includes multiple second incremental code patterns that are equally distributed. The second incremental code patterns are arranged more loosely than the first incremental code patterns.

Abstract: The present invention provides a secondary side of a linear motor, which mainly includes a base, a combining mechanism and multiple magnetic members, wherein the base has multiple plates that are sequentially stacked into a block; the combining mechanism is configured to combine the plate-shaped bodies; and the magnetic members are disposed on the base in a separated manner.

Abstract: A linear position detecting device applied to a linear motion system for motion measurement is provided. The linear position detecting device comprises a coding element and a detecting element corresponding to the coding element for retrieving the signal of the coding element to provide the position information. The coding element comprises a base, a first coding unit and a second coding unit wherein the base comprises an axial direction parallel to a length of the base, and a radial direction perpendicular to the axial direction. The first coding unit is configured on the base and comprises a plurality of first tracks extended along the axial direction and alternately arranged along the radial direction. The second coding unit is configured on the base and adjacent to the first coding unit, and comprises a plurality of second tracks wherein the second tracks are extended along the radial direction and alternately arranged along the axial direction.

Abstract: A cooling structure for rotary electric machine is provided. The cooling structure for rotary electric machine comprises a sleeve, a plurality of dividers, a plurality of first walls and a plurality of second walls. The sleeve comprises an annular surface of a first half annular surface and a second half annular surface. The dividers are configured on the annular surface of the sleeve in parallel to provide multiple channels. The first walls are configured on the first half annular surface and between multiple corresponding dividers to provide multiple first division regions. The second walls are configured on the second half annular surface and between multiple corresponding dividers to provide multiple first division regions wherein the first division regions are asymmetric to the second division regions.

Abstract: An insulation detecting method for the electric machine is provided. The leakage current leakage and the leakage resistance are detected and determined by the output potential waveform resulted from the inversion operation of the first switch and the second switch of the driver. Besides, the signal is amplified through the software or the amplification circuit coupled between the electric machine and the driver to detect the leakage resistance approximately to 5M?.

Abstract: The present invention provides a rotor with magnet protection mechanism comprising a core, a plurality of magnets and a magnet protection mechanism. The core comprises a plurality of slots in a radial arrangement, and the magnets are held within the slots. The magnet protection mechanism is set against the core and comprises a plurality of segments corresponding to the slots in a circular configuration.

Abstract: An optical positioning measurement device includes a light source module operable to emit light, an encoder module and a sensor module. The sensor module is configured to output electric signals relating to luminous flux of light received thereby via the encoder module. The encoder module having a first incremental code portion, a second incremental code portion and an absolute code portion. The first incremental code portion includes multiple first incremental code patterns that are equally distributed. The second incremental code portion includes multiple second incremental code patterns that are equally distributed. The second incremental code patterns are arranged more loosely than the first incremental code patterns.

Abstract: A linear motor includes a magnet seat, a magnet unit, a coil seat and a coil unit. The magnet unit is disposed on the magnet seat, and includes a plurality of magnet sets each including two magnets. The coil unit is disposed on the coil seat, and includes a plurality of coil sets each including two coils. The magnets of each of the magnet sets are aligned with each other in a direction different from that in which the coils of each of the coil sets are aligned.