Abstract: A shift range control device switches a shift range by controlling the driving operation of a motor in a shift range switching system. The shift range control device includes a drive control unit, a stop control unit, and a return control unit. The drive control unit drives the motor so that an engagement member engages in one of recess portions corresponding to a requested shift range. The stop control unit stops the motor at a target position corresponding to the requested shift range. When the requested shift range corresponds to one of both ends of multiple recess portions, the return control unit returns the rotation position of the motor after the motor stops at the target position.

Abstract: A sensor device comprises a sensor unit for generating a signal indicative of a physical quantity. The device comprises a processing unit for receiving the signal, in which the processing unit comprises a storage memory for storing data derived from the signal as provided by the sensor unit at at least two points in time. The device comprises a bus interface for communicating with an electronic control unit via a digital communication bus. When a read command is received from the electronic control unit, an estimate of the physical quantity is sent in response to the electronic control unit. The processing unit comprises an estimator for calculating the estimate at a reference point in time based on the data stored in the storage memory, in which the reference point in time differs from the point in time at which the read command is received by substantially a predetermined offset.

Abstract: In a motor control apparatus, an exciting unit excites a plurality of excitation phases of a motor. A current measurement unit measures exciting currents flowing through coils of respective phases of the motor, and generates measurement data including measurement values of the exciting currents. A determination unit determines whether or not noise is superimposed on a measurement value included in the measurement data by comparing, with respect to each of the plurality of excitation phases, the measurement data regarding a first phase coil that constitutes that excitation phase with the measurement data regarding a second phase coil that constitutes that excitation phase.

Abstract: A method for positioning a specimen in a microscope system includes overserving and/or processing a region of interest (ROI) on the specimen. The microscope system includes: an optical axis; a movable specimen stage for receiving a specimen; a memory apparatus for storing data records that describe the positions of the specimen; and a control apparatus, which can control the movement of the specimen stage with the aid of the stored data records. The method includes: holding a specimen region (ROI) in the first position; storing a first data record, by which the first position is described, wherein the first position is defined as independent position; storing a second data record, by which the second position is described, wherein the second position is linked to the independent position; and calling one of the stored data records such that the specimen stage is moved in such a way that the specimen region is held at the position that is described by the called data record.

Abstract: A simulation device includes: a simulation system including a predetermined feedback system having at least a predetermined control block structure corresponding to a predetermined device-side configuration; a holding unit holding impulse response information for calculation that is information on an impulse response relating to the predetermined device-side configuration; a first response calculation unit calculating a time response of the predetermined device-side configuration to a predetermined input value by convolution processing using the impulse response information for calculation and the predetermined input value; and a second response calculation unit calculating a response of the simulation system to a command value input to the simulation system by using the time response of the predetermined device-side configuration calculated by the first response calculation unit. According to this configuration, simulation accuracy of a control system is improved.

Abstract: An apparatus (1) for reducing bearing voltages in an electric machine (M) with a rotor (2) and a stator (3). A rotor-side and stator-side bearing outer ring (4r, 4s) and a respective bearing inner ring (4i) are provided between the rotor (2) and stator (3). A connection electronics system connect with the motor (M). A compensation arrangement (20) adjusts the potential (ULA-stator) of the bearing voltage at the bearing outer rings (4r, 4s) and the respectively corresponding bearing inner ring (4i) to an identical value. The compensation arrangement (20) comprises an impedance (ZKOMP), of at least one first impedance (ZKOMP, R) between the stator (3) and the rotor-side bearing outer ring (4r). The impedance (ZKOMP) has at least one impedance (ZKOMP. S) between the stator (3) and the stator-side bearing outer ring (4s).

Abstract: A unit power cell of an inverter system, according to one embodiment of the present invention, comprises: a first leg including first and fourth switching elements, which are connected in series to each other, second and third switching elements, which are connected in series with each other between a connection point of the first and second switching elements and a smoothing unit, and first, second, third and fourth diodes, which are inversely and respectively connected in parallel with the first, second, third and fourth switching elements; and a second leg connected in parallel with the first leg and including fifth and sixth switching elements, which are connected in series to each other, and fifth and sixth diodes, which are inversely and respectively connected in parallel with the fifth and sixth switching elements.

Abstract: A remote controller can be provided on any apparatus that employs feedback control from a native controller to add functionality to the apparatus where the native controller is not capable of providing such functionality independently.

Abstract: According to one embodiment, there is provided a disk device including a head, a disk, a first motor, and a first circuit. The disk has a recording surface. The first motor causes the head to seek along the recording surface. The first circuit can switch between a first state and a second state. The first state is a state where a current path of the first motor is electrically cut off from a first electricity storage unit. The second state is a state where the current path of the first motor is electrically connected to the first electricity storage unit.

Abstract: A receiver-fastener apparatus comprises a receiver-fastener housing, a receiver-fastener turret, an indexing-collet assembly, an anvil, a receiver-fastener delivery assembly, and a swager assembly. The receiver-fastener turret is selectively rotatable relative to the receiver-fastener housing about a receiver-fastener-turret rotation axis (Z). The indexing-collet assembly is selectively movable relative to the receiver-fastener housing between an indexing-collet-assembly extended position and an indexing-collet-assembly retracted position along an indexing-collet-assembly axis (Y) that is parallel to the receiver-fastener-turret rotation axis (Z). The anvil is selectively movable relative to the receiver-fastener turret along an anvil axis (X) that is parallel to the receiver-fastener-turret rotation axis (Z). The receiver-fastener delivery assembly is configured to operatively position receiver fasteners for operative placement on shank fasteners, corresponding to the receiver fasteners.

Abstract: A method of measuring a movement, the method comprising the steps of: acquiring and digitizing both a first measurement voltage across the terminals of a first secondary winding and also a second measurement voltage across the terminals of a second secondary winding of an inductive movement sensor; multiplying the first measurement voltage by itself in order to obtain a first component of a crossed vector, multiplying the second measurement voltage by itself in order to obtain a second component of the crossed vector, and multiplying together the first measurement voltage and the second measurement voltage in order to obtain a third component of the crossed vector; applying the crossed vector as input to a lowpass filter in order to obtain a filtered vector, and estimating the movement from the components of the filtered vector.

Abstract: A test system for testing a specimen include (a) a set of actuators for applying a desired time history of load to a specimen, (b) a drive unit connected to each actuator, (c) power generating elements (current/pneumatic/hydraulic) and (d) a controller connected to the drive units, the controller generates a drive signal for the drive unit based on feedback received from output of the specimen and an error derived from the feedback and an input command. The controller generates the drive signal by compensating varying system parameters which are introduced due to nonlinear response of the test system and the specimen, wherein the controller does not require (i) additional measured variable other than a feedback received from the specimen and (ii) a numerical model of the test system and the specimen.

Abstract: A computer includes a processor and a memory, the memory storing instructions executable by the processor to initiate a calibration based on a portable device stability and a steering wheel angle, detect a vehicle pedal actuation, and, then, based on a portable device acceleration, determine a calibration vector between a portable device coordinate system and a vehicle coordinate system.

Abstract: A robot system includes a robot mechanism unit provided with a sensor and a motor encoder for detecting a position of a control target, and a robot control device which controls an operation of the robot mechanism unit in accordance with an operation program, in which a learning control unit includes a position error estimating section which estimates low-frequency components in a position error, based on information from the motor encoder and estimates high-frequency components in the position error, based on information from the sensor.

Abstract: Disclosed is a scalable piezoelectric linear actuator. The linear actuator includes a central rod and one or more bending modules connected to the central rod. Each of the one or more bending modules includes one or more bending actuators. Each of the one or more bending actuators includes at least two layers of bending elements. Further, each of the one or more bending actuators incudes a metallic layer disposed between each of the at least two layers of bending elements. Further, each of the one or more bending actuators includes an insulating layer disposed on at least one of the at least two layers of bending elements. Further, each of the one or more bending actuators includes a sensing element disposed on the insulating layer.

Abstract: Provided is an auxiliary bending robot capable of processing two workpieces simultaneously, including a linear base slide rail, a slider, a movable major arm, a movable minor arm, a front arm, a swing link, and an additional seventh axis. The slider is slidably connected to the linear base slide rail, and a first axis is formed between the slider and the linear base slide rail. A top portion of the slider is directly or indirectly hinged to a rear end of the movable major arm through a second axis, a front end of the movable major arm is hinged to a rear end of the movable minor arm through a third axis, a front end of the movable minor arm is hinged to a rear end of the front arm through a fourth axis, and a front end of the front arm is rotatably connected to a middle portion of the swing link through a fifth axis.

Abstract: A multicopter includes a body, propellers, each of which is rotated by a motor to generate lift for the body, a main controller configured to supply a speed instruction signal to the motor, a supply circuit configured to supply a torque current signal and a field current signal obtained from the motor, and a motor drive control device.

Abstract: A shift range control apparatus includes: an idling determination portion that determines, based on a motor angle and an output shaft angle, an end of an idling state in which a motor is rotating within a range of a play, the motor angle being a value based on a detected value of a motor rotation angle sensor that detects the rotation of the motor, the output shaft angle being a value based on a detected value of an output shaft sensor that detects rotation of the output shaft; and a target value setting portion that sets a motor angle target value for drive control of the motor using a corrected angle value that is a value corresponding to the motor angle at an end of an idling.

Abstract: An adaptive torque disturbance cancellation method and motor control system for rotating a load are described. The system has: (i) a speed controller for receiving a first input signal indicating a desired motor speed and, in response, for outputting a motor control signal; (ii) current sensing circuitry for sensing current through a motor that rotates in response to the speed controller; (iii) circuitry for storing, into a storage device, history data representative of the current through a motor when the motor operates to rotate the load; and (iv) circuitry for modifying the motor control signal in response to the history data.

Abstract: A position control apparatus includes an inversion detector which detects an inversion of a position command and generates an inversion detection signal, a deflection characteristic storage unit which stores a deflection characteristic representing an amount of deflection with respect to a torque command, and an inversion correction calculator which calculates an inversion correction amount. The inversion correction calculator stores a torque command immediately before the inversion, and calculates the inversion correction amount from a difference between an amount of deflection immediately before inversion in which the stored torque command is checked with the deflection characteristic, and an amount of deflection after the inversion in which a value obtained by inverting a sign of the stored torque command is checked with the deflection characteristic. A value obtained by adding the inversion correction amount to the position command value is used for position error calculation.

Abstract: A device and method for monitoring and correcting the position and orientation of an operating device (2) with respect to a piece (P). A measuring device (5) including a plurality of sensors (505) connected to the operating device is used to measure through contactless technology the distances of the sensors from a surface (?) of the piece along respective directions (l, r, s) having given orientations. The sensor measurements are compared to predetermined desired values and the position of the operating device (2) is selectively changed to maintain a desired positional relationship between a main operative axis (X1) of the operative device and operation axis (X2) defined by the surface of the piece.

Abstract: A 3-phase motor driver circuit has a first input to be coupled to an output of a first phase current sensor, and a second input that represents a zero reference. A controller adjusts one or more of a first phase voltage, a second phase voltage, and a third phase voltage, until a comparison between the first input and the input indicates that the first input has reached the zero reference, and in response the controller captures an output of a second phase current sensor and an output of a third phase current sensor. The controller then stores, in memory, calibration data that is based on the captured outputs of the second and third phase current sensors. Other aspects are also described.

Abstract: A system includes a set of automated arms. Each automated arm includes a holder configured to support a portion of a part, with the set including a quantity of automated arms and holders sufficient for verifying a complex geometry of the part. The automated arms are configured to move the holders into respective verification positions. The system also includes a computing device that includes memory that stores a plurality of predefined automated arm configurations. Each automated arm configuration includes holder verification positions to support portions of a part having a respective complex geometry. The computing device is configured to manipulate the set of automated arms to implement the holder verification positions of a selected one of the automated arm configurations.

Abstract: A method and apparatus are disclosed for determining airflow through a PAP device while applying PAP therapy. The actual speed of a blower 6 is measured. The desired motor current I DES required for the actual speed to approach or maintain a desired speed is used, together with the actual speed RPM ACT, in a flow estimation algorithm to determine flow through the PAP device. The estimation algorithm consists of a two-dimensional look-up table, where the inputs are the desired motor current and actual motor speed, and the output is the flow through the PAP device.

Abstract: A control system of a machine tool includes an analysis device, the analysis device includes acquisition portions which acquire chronological control data when a work is machined and which acquire spatial machined surface measurement data after the machining of the work, a storage portion which stores the control data and the machined surface measurement data, a data-associating processing portion which associates the control data and the machined surface measurement data with each other in two machining directions, a machined surface failure detection portion which detects a failure on the machined surface of the work and a location thereof based on the machined surface measurement data in the two machining directions and an identification portion which identifies a drive axis that causes the failure from the detected failure and the machining direction of the control data corresponding to the detected failure location.

Abstract: A non-transitory computer readable information recording medium stores an evaluation program for operating first and second motor control units, for evaluating operation characteristics related to a control device including a first motor control unit configured to control a first motor driving a first axis, and a second motor control unit configured to control a second motor driving a second axis. The evaluation program operates the first and second motor control units so that a shape of a movement path of a control target moved by the first and second axes includes at least a cornered shape in which both rotation directions of the first and second motors do not invert, and an arc shape in which one of the first and second motors rotates in one direction, and a rotation direction of the other of the first and second motors inverts.

Abstract: A window processing system and method for use in fabricating window frames or sashes. The system includes an articulating arm having a plurality of members and arms to allow movement about multiple axes defined by the articulating arm. The system further includes a tool support fixture assembly coupled to an outermost member of the plurality of members, the tool support fixture assembly includes a plurality of tools for performing cleaning operations on a window frame or sash during use.

Abstract: The invention relates to a method (100) for switching between desired value filters (26, 28) of a drive means (52) for a machine axis (10, 12) during operation. An input signal (20) is applied to the first and to the second desired value filter (26, 28) for producing a first and a second output signal (23, 33). Then any deviation between the first and the second output signal (23, 33) is determined. If the deviation falls below a threshold value, the first desired value filter (26) is separated from the drive means (52) and substantially simultaneously the second desired value filter (28) is connected to the drive means (52). The desired value filters (26, 28) have different running times (19).

Abstract: A drivetrain for linear movement of a machine component along a linear guide of a machine includes a motor with a motor-measuring system. A length-measuring system is assigned to the linear guide for determining a position of the machine component. To determine rigidity of the drivetrain, a constant acceleration for the machine component is predetermined by a numerical controller for performing closed-loop control of the movement of the machine component. The numerical controller determines a difference between a position of the machine component derived from the motor-measuring system and a position of the machine component measured at the same time by the length-measuring system during the acceleration phase, and the difference is assigned to the acceleration or to a force required for the acceleration and storage in the numerical controller of the pair of values established in this way and/or of a rigidity value emanating from the pair of values.

Abstract: A purge air regulating unit for a drying device for compressed air, the purge air regulating unit being connectable to a housing in which a membrane filter, such as a bundle of hollow fiber membranes, is arranged such that a sub-flow of dried compressed air flowing out of the housing from an outlet channel can be conducted back to the hollow fiber membranes as purge air by the purge air regulating unit. A method for regulating the flow of dried compressed air flowing out of a membrane dryer back into a housing of the membrane dryer, the membrane dryer being equipped with a membrane filter, such as a bundle of hollow fiber membranes, is also provided.

Abstract: A position measurement method to measure a position of an object in a machine tool includes a tool sensor position acquisition stage, a reference block position acquisition stage, a relative position calculation stage, a reference tool position acquisition stage, a position measurement sensor measurement stage, a length compensation value calculation stage, and a position measurement stage. In the position measurement stage, the measurement position of the object is compensated using a length direction compensation value of a position measurement sensor calculated in the length compensation value calculation stage. The object is measured by the position measurement sensor installed to a main spindle.

Abstract: An error identification method includes a tool sensor position acquisition stage, a reference block position acquisition stage, a relative position calculation stage, a reference tool position acquisition stage, a position measurement sensor measurement stage, a length compensation value calculation stage, a diameter compensation value acquisition stage, a position measurement stage, a position compensation stage, and a geometric error identification stage. The diameter compensation value acquisition stage acquires a radial direction compensation value of the position measurement sensor with the measured jig. The position measurement stage indexes the rotation axis to a plurality of any given angles and measures respective positions of the measured jig. The position compensation stage compensates the position measurement value at the position measurement stage using the length direction compensation value and the radial direction compensation value.

Abstract: A numerical controller contains a position table where a positional relationship is defined between a position of a master axis and positions of a plurality of slave axes, a slave axis synchronous control unit that drives and controls the plurality of slave axes in accordance with the position table so that the slave axes are synchronized with the master axis, a parent determining unit that determines one slave axis, which is stopped due to a failure, to be a parent of the master axis, and a master axis control unit that drives and controls the master axis based on a command position, and if a slave axis serving as the parent of the master axis is determined by the parent determining unit, drives and controls the master axis in accordance with the position table, so that the master axis is synchronized with the slave axis determined to be the parent.

Abstract: The present invention relates to an apparatus for reducing and/or avoiding harmful bearing currents in an electrical machine (M) such as preferably a three-phase EC motor (M), with a rotor (2) and a stator (3) which is constructed in an insulated manner, wherein at least one outer bearing ring (4a) and one inner bearing ring (4b) are provided between rotor (2) and stator (3), comprising connecting electronics (10) for connecting the motor (M), wherein the stator (3) is connected by means of an electrical connection (20) to a high-frequency electronics potential (11) which differs from the earth potential (UE) and is stable with respect to the latter at a potential tap (20a) of the connecting electronics (10).

Abstract: A multifunctional end effector includes a support structure configured to be carried by a robotic system and at least two of a fluid stream cutting system, a spindle system and/or a scanning system, each mounted to the support structure. Also described is a fluid stream cutting system having a plurality of fluid stream catchers selectively mountable to the fluid stream system and a mounting arrangement for mounting each fluid stream catcher to the fluid stream cutting system.

Abstract: A machine tool includes a bed supported on a ground by supporting jigs, a table movable in an X-axis direction, a spindle head movable in a Y-axis direction, a quill provided to be movable in a Z-axis direction, a spindle supported by the quill to be rotatable about its axis, feed mechanisms for moving the table and the like in the axis directions, and a numerical controller controlling operation of the feed mechanisms, and the numerical controller is configured to calculate motion errors based on load values acting on the supporting jigs by a motion locus estimator, an influence coefficient storage, a motion error calculator, and a motion locus storage, generate a correction signal for compensating for the motion errors by a position corrector, and add the generated correction signals to a position control signal transmitted from a position generator to a position controller.

Abstract: A servomotor control device includes: a driven body configured to be driven by a servomotor; a connection mechanism configured to connect the servomotor and the driven body; a position command generation unit configured to generate a position command value; a motor control unit configured to control the servomotor using the position command value; a force estimation part configured to estimate a force estimated value which is a drive force acting on the driven body at a connecting part with the connection mechanism; a force estimated value output part configured to decide on reflection of updating and interruption of updating of a force estimated value based on the position command value, and output either of a force estimated value reflecting updating, or a force estimated value of when interrupting updating; and a compensation amount generation part configured to generate a compensation amount for compensating the position command value.

Abstract: Provided is an apparatus capable of transporting a rotor from a first location to a second location, including: a holding device for engaging with a portion of the rotor at the first location so as to hold the rotor relative to the apparatus; a position determination device for determining the position of at least one component part of the rotor relative to another component part of the rotor or another body; a positioning device for positioning or repositioning said at least one component part of the rotor relative to another component part of the rotor or another body; and a movement device for moving the rotor from the first location to the second location. Also described is a method of loading a rotor into a balancing machine.

Abstract: A method for virtually calibrating a CNC machine including the steps of selecting a true axis of movement of a toolhead of the CNC machine, instructing the toolhead to travel along the true axis of movement, selecting multiple points along an actual axis traveled by the toolhead, comparing the distance of the multiple points along the actual axis from the true axis to determine offset amounts from the true axis corresponding to a lack of straightness, and modifying g-code instructions to compensate for the offset amounts before uploading the g-codes to a CNC controller.

Abstract: A touch probe circuit comprises a displacement sensor having a sensor signal responsive to touch probe stylus displacement, an offset compensation controller, and a difference amplifier. The offset compensation controller provides a varying offset compensation signal to compensate drift in a rest-state signal component of the sensor signal. The difference amplifier inputs the offset compensation signal and the sensor signal and amplifies the difference therebetween to provide an offset compensated displacement signal, which is output to a touch trigger signal generating circuit that provides a touch signal when the stylus touches a workpiece, and is also output to the offset compensation controller. The offset compensation controller portion provides a feedback loop that inputs the offset compensated displacement signal and outputs a responsive low pass filtered offset compensation signal to the difference amplifier, in order to provide the offset compensated displacement signal.

Abstract: An object burr processing machine for trimming object burr, comprises a machine base, a positioning seat erected on the machine base, a processing arm provided on the positioning seat, an object stage coupled with the machine base for placing object, and control device. The control device comprises an object sensing unit, a processing path setting unit, and a process control unit. The object sensing unit is able to sense the shape of the object. The processing path setting unit is able to define a processing path based on the shape of the object. The process control unit communicates and links to the processing arm, the object stage, the object sensing unit, and the processing path setting unit. During the burr trimming process, the process control unit can use the established processing path to control other devices to conduct the burr trimming process to the object, which greatly increases the convenience and efficiency of the processing.

Abstract: A device (101) for producing a position signal indicative of rotational position of a resolver is presented. The device comprises a signal transfer interface (102) for receiving first and second alternative signals, and a processing system (103) for generating the position signal on the basis of the amplitudes of the first and second alternative signals and the polarity of an excitation signal of the resolver. The device is configurable to operate in a first operational mode where a local signal generator (104) generates the excitation signal and the device transmits the excitation signal to the resolver. The device is configurable to operate also in a second operational mode where the device receives information indicative of the polarity of the excitation signal from another device. Thus, devices of the kind described above can be used in a system where many converters are driving separate windings systems of an electrical machine.

Abstract: In an error correction amount creating device that creates an error correction amount for a five-axis machine controlled by a numerical controller and having three linear axes and two rotation axes, the translation error correction amount and the rotation error correction amount for each lattice point of a lattice region into which a two-dimensional coordinate system space with the rotation axes is divided is obtained from data measured for each position of division of the respective axes and given to the numerical controller.

Abstract: A method for servo locking control is provided. A servo enters a first lock state, and determines whether the current angular deflection values of the servo in a first preset period are all greater than a preset angular deflection value. When the current angular deflection values of the servo in the first preset period are all greater than the preset angular deflection value, the servo enters a second lock state, and determines whether the current angular changing values of the servo in a second preset period are all less than a preset angular changing value. When the current angular changing values of the servo in the second preset period are all less than the preset angular changing value, the servo enters the first lock state. A servo for performing the method for servo locking control is also provided.

Abstract: A method of calculating a motor velocity in an electric power steering system comprises receiving a plurality of motor position signals from a motor position sensor of the electronic power steering system, calculating a plurality of angle difference based on the motor position signals prior to performing any filtering operations on the motor position signals, performing a linear regression analysis on the angle differences to predict an angle difference, and calculating a motor velocity based on the predicted angle difference.

Abstract: A numerical controller controls a machine tool with a plurality of control axes so as to compensate an inward turning error by inserting a curved movement path into a corner section between two consecutive blocks. An estimated inward turning amount generated as the corner section is subjected to post-interpolation acceleration/deceleration is calculated based on the radius of curvature of the curve and allowable accelerations of the axes of the machine tool, and such a curved movement path that its inward turning amount has a value obtained by subtracting the estimated inward turning amount from a tolerance is inserted into the corner section if the sum of the estimated inward turning and the inward turning amount of the curve is larger than the tolerance.

Abstract: A method for crimping and a crimping tool, such as an automaton, to crimp a ring on an attachment rod extending along an axis of the attachment rod from a panel. The tool involves moving a movement clip of the automaton to grip the ring so that the attachment rod is introduced into the ring and moving a crimping nose of the automaton so as to prevent the removal of the ring from the attachment rod. Once crimped, the ring is released and the crimping nose is moved so as to ready the crimping tool for subsequent crimping of rings on attachment rods.

Abstract: Various embodiments of the invention provide for stiction testing in MEMS devices, such as accelerometers. In certain embodiments, testing is accomplished by a high voltage smart circuit that enables an analog front-end circuit to accurately read the position of a movable proof-mass relative to a biased electrode in order to allow the detection of both contact and release conditions. Testing allows to detect actual or potential stiction failures and to reject defective parts in a Final Test stage of a manufacturing process where no other contributors to stiction issue can occur, thereby, minimizing stiction failure risks and extending the reliability of MEMS devices.

Abstract: An umbrella apparatus having a canopy portion hingedly coupled to a pole portion. The umbrellas apparatus includes a rechargeable electrical power system that provides electrical power to an electromechanical opening and closing system and a light assembly and an entertainment system. A solar energy system is conductively coupled to the rechargeable electrical power system and is utilized to collect and convert solar energy to electrical energy for recharging the electrical power system. The entertainment system features a USB port and allows users to stream music and control the color of the light assembly.

Abstract: A control system of servo motors in a machine tool, comprising a host control device which generates position command values for processing a workpiece, servo control devices which drive servo motors to operate a tool for processing using the position command values, and position detectors which detect positions of the servo motors or a tool position and further a position error computing part computes position error between the position command values and detected positions of the servo motors, a reference angle generating part calculates a reference point on a closed figure and a reference angle which varies monotonously from a current processing point under the condition that any position inside of the closed figure which the position command value forms as the center, and learning control parts use the reference angle and the position error as the basis to perform angle synchronization type learning control to control the servo motors.