Abstract: A robot system includes a robot, a controller that controls actuation of the robot, and a first external device, wherein the robot has a first member, a second member that pivots relative to the first member, a motor that generates drive power for pivoting the second member relative to the first member, an encoder including a detection unit that detects an amount of rotation of the motor, a control unit that controls actuation of the detection unit, a communication unit that communicates with the controller, and a first device connecting part connected to the first external device, the control unit connected to the detection unit, the communication unit, and the first device connecting part, and a first communication line connecting the communication unit and the controller, and data of the first external device is transmitted to the controller via the first device connecting part and the first communication line.

Abstract: An encoder including a rotary disc that rotates around a rotating shaft, and a sensor that detects a rotational position of the rotary disc, in which the rotary disc is provided with first patterns and second patterns, the first patterns are arranged at positions obtained by equally dividing a first circumference which is a circumference of a first circle into M (M is natural number of 2 or more) at intervals, the second patterns are arranged at positions obtained by equally dividing a second circumference which is a circumference of a second circle which is a concentric circle of the first circle and has a different radius from that of the first circle into N (N is natural number of 2 or more) at intervals, and M and N are different from each other and a greatest common divisor of M and N is 1.

Abstract: A robot includes a robot control apparatus that communicates with a device, wherein a transmission terminal of a clock synchronization serial communication system of the device and a reception terminal of the robot control apparatus are connected by a signal line, and the robot control apparatus receives an asynchronous signal from the device.

Abstract: A robot system includes: a robot having a main shaft gear attached to a rotary shaft of a drive unit, a first countershaft gear meshing with the main shaft gear, a second countershaft gear meshing with the main shaft gear, and a third countershaft gear meshing with the main shaft gear. A number of teeth of the main shaft gear, a number of teeth of the first countershaft gear, a number of teeth of the second countershaft gear, and a number of teeth of the third countershaft gear are integers having no greatest common divisor other than 1.

Abstract: An identification number setting system includes a first element component including a first storing section, coupled to a first branch communication line branching from a main line of a bus-type communication wire, and coupled to a power supply, a second element component including a second storing section, coupled to a second branch communication line branching from the main line, and coupled to the power supply to be capable of switching energization and disenergization, and a control device coupled to the main line and configured to communicate with the first element component and the second element component. The control device writes a first identification number in the first storing section in a first state and writes a second identification number different from the first identification number in the second storing section after the writing of the first identification number and in a second state.

Abstract: An identification number setting system includes a first element component including a first storing section, coupled to a first branch communication line branching from a main line of a bus-type communication wire, and coupled to a power supply, a second element component including a second storing section, coupled to a second branch communication line branching from the main line, and coupled to the power supply to be capable of switching energization and disenergization, and a control device coupled to the main line and configured to communicate with the first element component and the second element component. The control device writes a first identification number in the first storing section in a first state and writes a second identification number different from the first identification number in the second storing section after the writing of the first identification number and in a second state.

Abstract: A robot system includes a robot, a controller that controls actuation of the robot, and a first external device, wherein the robot has a first member, a second member that pivots relative to the first member, a motor that generates drive power for pivoting the second member relative to the first member, an encoder including a detection unit that detects an amount of rotation of the motor, a control unit that controls actuation of the detection unit, a communication unit that communicates with the controller, and a first device connecting part connected to the first external device, the control unit connected to the detection unit, the communication unit, and the first device connecting part, and a first communication line connecting the communication unit and the controller, and data of the first external device is transmitted to the controller via the first device connecting part and the first communication line.

Abstract: A robot includes a robot control apparatus that communicates with a device, wherein a transmission terminal of a clock synchronization serial communication system of the device and a reception terminal of the robot control apparatus are connected by a signal line, and the robot control apparatus receives an asynchronous signal from the device.

Abstract: A robot system includes: a robot having a main shaft gear attached to a rotary shaft of a drive unit, a first countershaft gear meshing with the main shaft gear, a second countershaft gear meshing with the main shaft gear, and a third countershaft gear meshing with the main shaft gear. A number of teeth of the main shaft gear, a number of teeth of the first countershaft gear, a number of teeth of the second countershaft gear, and a number of teeth of the third countershaft gear are integers having no greatest common divisor other than 1.

Abstract: An encoder including a rotary disc that rotates around a rotating shaft, and a sensor that detects a rotational position of the rotary disc, in which the rotary disc is provided with first patterns and second patterns, the first patterns are arranged at positions obtained by equally dividing a first circumference which is a circumference of a first circle into M (M is natural number of 2 or more) at intervals, the second patterns are arranged at positions obtained by equally dividing a second circumference which is a circumference of a second circle which is a concentric circle of the first circle and has a different radius from that of the first circle into N (N is natural number of 2 or more) at intervals, and M and N are different from each other and a greatest common divisor of M and N is 1.

Abstract: A position detecting device detects the position of a moving body by using first and second detected signals that have voltage values changing in connection with a movement of the moving body. The position detecting device includes a difference computing unit that computes first and second difference values, the first being the difference between a center voltage of the first detected signal and the voltage value of the first detected signal, and the second being the difference between a center voltage of the second detected signal and the voltage value of the second detected signal. A ratio computing unit computes a difference-sum ratio index in accordance with the ratio of the difference value between the absolute values of the first and second difference values and the absolute value of the second difference value to the sum of the absolute values of the first and second difference values.

Abstract: A position detecting apparatus includes: a main gear on a main shaft rotatable around a shaft center, and rotating with the main shaft; two or more auxiliary gears connected to the main gear, configured with a different number of teeth than the main gear, and configured to have a different number of teeth than each other; magnetic angle sensors respectively provided on the auxiliary gears, and configured to detect rotating angles of the auxiliary gears; a first polarization plate provided on the main shaft, and rotating with the main shaft; counter polarization plates provided at positions facing the first polarization plate, and having polarization angles deviated from each other by 45°; a light source irradiating the first polarization plate and the counter polarization plates; and light receptors detecting light irradiated from the light source and passing through the first polarization plate and the counter polarization plates.

Abstract: A control device of a motor includes detection section that detect counter-electromotive voltages induced in coils by rotation of a rotor, a counter-electromotive voltage normalizing section that normalizes a value of the counter-electromotive voltage using a normalization coefficient according to a speed of the rotation of the rotor, and a rotor position specifying section that specifies the position of the rotor based on values of the counter-electromotive voltage normalized by the counter-electromotive voltage normalizing section.

Abstract: A position detecting device detects the position of a moving body by using first and second detected signals that have voltage values changing in connection with a movement of the moving body. The position detecting device includes a difference computing unit that computes first and second difference values, the first being the difference between a center voltage of the first detected signal and the voltage value of the first detected signal, and the second being the difference between a center voltage of the second detected signal and the voltage value of the second detected signal. A ratio computing unit computes a difference-sum ratio index in accordance with the ratio of the difference value between the absolute values of the first and second difference values and the absolute value of the second difference value to the sum of the absolute values of the first and second difference values.

Abstract: A control device of a motor includes detection section that detect counter-electromotive voltages induced in coils by rotation of a rotor, a counter-electromotive voltage normalizing section that normalizes a value of the counter-electromotive voltage using a normalization coefficient according to a speed of the rotation of the rotor, and a rotor position specifying section that specifies the position of the rotor based on values of the counter-electromotive voltage normalized by the counter-electromotive voltage normalizing section.

Abstract: A control device includes a position generating section that generates a position signal including position information of a rotor, an electrical angle detection section that outputs a detection electrical angle signal including electrical angle information that is obtained by multiplying a coefficient by the position signal, and a driving section that outputs an excitation current to a coil based on an amplitude signal including amplitude information of the excitation current and the detection electrical angle signal.

Abstract: A liquid crystal display is fabricated which has bus wires disposed in a grid shape, switching elements coupled to the bus wires, and pixel electrodes which are disposed on an interlayer insulating film formed by coating and which are coupled with the switching elements. In fabricating the liquid crystal display, when a transparent conductive film is formed on the interlayer insulating film which is formed by coating, the temperature of the substrate is controlled to become 100° C.-170° C. In another embodiment, when the transparent conductive film is formed on the interlayer insulating film in a non-heated condition, an oxygen flow rate ratio is set to 1% or lower, and annealing is performed after forming the film. Thereby, when etching the ITO film on the interlayer insulating film, etching residue is not produced. Further, contact resistance between the ITO film and the lower layer metal can be uniformly decreased, and display defects can be obviated.

Abstract: A rolling device in which rust development or damage on a raceway surface or rolling surface is hard to occur even if water and the like intrude is provided. A self-aligning roller bearing comprises an inner ring 1, an outer ring 2, and a plurality of rolling elements 3 disposed rotatably between a raceway surface 1a of the inner ring 1 and a raceway surface 2a of the outer ring 2. At least any one of the inner ring 1, the outer ring 2, and the rolling elements 3 is provided with a metal coating formed by shot peening of a powder of metal less noble than iron at least on a part of its surface.

Abstract: A display device includes: two substrates sandwiching electro-optic material; source and gate lines on one substrate; switching elements coupled to the gate lines; a counter electrode coupled to pixel electrodes; gate dummy pixels including: gate dummy pixel electrodes applying an electric charge to the electro-optic material, and gate dummy switching elements switching between the gate lines and the gate dummy pixel electrodes; source dummy pixels including: source dummy pixel electrodes applying an electric charge to the electro-optic material, and source dummy switching elements switching between the source lines and the source dummy pixel electrodes; a test switch line transmitting a control signal controlling switching of the gate and source dummy switching elements; and test gate and source lines coupled to non-adjacent gate and source dummy pixel electrodes so that the gate and source lines provided with the gate and source dummy pixel electrodes are divided into two or more phases.

Abstract: A display portion is divided by scan lines and signal lines into sections where pixels are provided. Contact holes each for connecting common wiring and a common electrode together are not formed for all the pixels, but decimated so as to be arranged in zigzags.