Abstract: A generator includes: a built-in voltage controller disposed inside the housing of the motor and connected to the stator; a loop changeover switch, wherein one side of the three groups of loop polar phase contact points is connected to the current output unit through three phase lines, and the other side is connected to the current output unit through three loop lines; a three-phase short-circuit changeover switch is in a spaced arrangement with the loop changeover switch and includes three groups of short-circuit polar phase contact points, one side of which is connected to each other through short-circuit wire, and the other side is connected to each phase line; three converted-voltage output lines, wherein one end electrically connected to the loop polar phase contact points of the loop changeover switch is connected to one side of the loop lines; the other end is used to connect to a power device.

Abstract: The invention relates to a device and method for performing open-loop and closed-loop control of a robot manipulator that has an end effector, driven by a number M of actuators ACTm.

Abstract: In order to set control with a high degree of freedom while taking into account a time response waveform, a robot control apparatus includes a control section that acquires a driving position of a driving section that drives a robot and a detection value of an operation force operating on the robot detected by a force detector, and controls the driving section based on the detection value, a first setting value, and a second setting value; a first display section that displays a detection waveform that is a time response waveform of the detection value; a second display section that displays a storage waveform that is a time response waveform of the operation force stored in a storage medium in advance; and a receiving section that receives setting of at least the second setting value.

Abstract: A method keeps a synchronous machine in a stable operating zone during large transient voltage excursions on a power grid to which the machine is connected. The machine's load angle, i.e., the position of the rotor flux with respect to the position of the stator flux, is calculated. If the load angle is not within a defined range of reference values for stable machine operation, the machine's field excitation is adjusted to bring the machine's load angle within the defined range of reference values for stable machine operation.

Abstract: A robot determines whether or not an operator or an object is jammed between a robot arm and an external structure, classifies an area in which an end portion of the robot arm moves into a restricted area and an unrestricted area, and sets a restriction period. If a period after detection of the jam is in the restriction period and the end portion is in the restricted area, restriction on movement is imposed on one or more joints of the robot arm. The restriction on movement is a stoppage of movement of one or more joints. If the period after detection of the jam is after the restriction period, the restriction on movement is removed. If the period after detection of the jam is in the restriction period and the end portion is in the unrestricted area, the restriction on movement is not imposed on the joints.

Abstract: Methods, circuits, architectures, apparatuses, and algorithms for determining a DC level in an AC or AC-coupled signal. The method generally includes disabling the AC or AC-coupled signal; sampling the disabled AC or AC-coupled signal to obtain sampled DC values of the AC or AC-coupled signal; and calculating the DC level using the sampled DC values of the AC or AC-coupled signal. The present transmitter generally includes an electro-absorption modulated laser (EML); a photodetector; a signal source configured to provide an AC or AC-coupled signal to the EML; and a microcontroller or microprocessor configured to (i) control the signal source, (ii) receive information from the photodetector, and (iii) deactivate the signal source for a predetermined length of time. The circuits, architectures, and apparatuses generally include those that embody one or more of the inventive concepts disclosed herein.

Abstract: A robot is provided with a multi-joint robot arm, an external force detection unit that is installed in the arm, and detects an external force, a joint movable-state calculation unit that calculates a movable state of a joint of the arm, an external force conversion unit which, based on the movable state calculated by the joint movable-state calculation unit, converts the external force detected by the external force detection unit to a converted external force, and a control unit that controls the arm based on the converted external force so as to regulate the operation of the arm.

Abstract: A robot arm is provided with an end effecter for grasping an object and a force sensor for detecting a force acted upon the end effecter. In the state in which end effecter grasps an object, when there is a change in the force acting on the end effecter detected by the force sensor, outputted is a signal for releasing the force of the end effecter grasping the object. The object grasped by the end effecter can be taken out as if the object were handed from person over to person.

Abstract: A method and system for controlling an electric machine using voltage mode control comprising: receiving a voltage command, the voltage command corresponding to a voltage control command for a position control loop, the position control loop configured to control a position of the electric machine; receiving a motor velocity signal; and determining a q-axis current. The method also includes computing a d-axis current to supplement the torque if a magnitude of a voltage supply for exciting the electric machine is not sufficient to provide a torque corresponding to the q-axis current, otherwise establishing the d-axis current at about zero; and generating command voltages for controlling the electric machine corresponding to the q-axis current and the d-axis current.

Abstract: A dc offset compensator receives a three phase ac current signal as an input and provides a dc offset signal correction voltage as an output. The dc offset compensator comprises a processor configured to sample the ac current signal, generate a rotating vector (r) from the sample, extract a dc offset from the sample and to generate a dc offset signal correction voltage from the dc offset. A method of compensating for dc offset in a three phase ac current signal is also presented.

Abstract: Described is an operating system for a plurality of poly phase alternating current motors having a common load, said alternating current motors including a first motor which is a synchronous induction motor and a second motor which is a synchronous induction motor or a synchronous motor, and driving said load in synchronism through respective connecting means connecting said alternating current motors to said load, each of said alternating current motors having respective phase field windings excited variably by direct current supplied by separate excitor circuits. The system comprises antiparallel connected thyristor means provided to one of said exciter circuits of said first motor and means for sensing the gap between the internal phase angles of said first and second motors and supplying gate control signals to said thyristor means provided to said exciter circuit of said first motor.

Abstract: There is provided an electrical inching control for inching a drive system comprising a grinding mill driven by one or more three phase synchronous motors. The electric inching control includes an inching power bus and contactors or the solid state equivalent thereof. The inching bus supplies energy for the stator windings of the synchronous motors. The contactors or switches connect the positive and negative sides of a direct current power supply to the different phases of the stator windings in a sequence which provides a stepped rotating magnetic field, and the rotor field windings are excited with direct current. The interacting stator and rotor fields causes a rotation of the rotor a predetermined amount with each step causing the mill also to rotate a respective predetermined amount.

Abstract: A field-controlled direct current motor is provided with a circuit responsive to armature current which is adjustable as to the amount of armature current representative signal, and the adjusted current representative signal is used to provide a selected amount of droop in the speed-load characteristic of the motor. A plurality of individually field-controlled direct current motors operating in parallel on a common load are individually adjusted as to the amount of sensed armature current to provide through field control individual selected amounts of droop in the respective speed-load characteristics.