Abstract: An auxiliary system includes a plurality of devices that are driven by ac motors. A plurality of independently controllable isolators couple phase windings of the ac motors directly to phase windings of the electric generator. When an isolator connects the phase windings of its corresponding ac motor to the windings of the electric generator, the ac motor is operated directly on a high frequency unconverted output of the electric generator. Motor speed is determined by the number of poles on the ac motor relative to the number of poles of the electric generator. Pole-switching allows the speed of the motor to be varied.

Abstract: The invention relates to a system for directing an apparatus, such as a crane bridge (1), moving on wheels along rails, which apparatus comprises a specified drive arrangement (m.sub.1, m.sub.2, m.sub.3, m.sub.4 ; k.sub.1, k.sub.2) on both sides of a roadway defined by rails (3), and which system comprises in the apparatus at least on one side of the roadway at least two successive detectors (d.sub.1, d.sub.2) in the direction of the rail (3) for measuring a lateral distance (l.sub.1, l.sub.2) of a specific part of an edge (e.sub.1, e.sub.2) of the apparatus to be driven from the rail, a control loop (CS) guiding the drive arrangements, a controller of the loop being able to direct the distance measurements (l.sub.1, l.sub.2) of the detectors (d.sub.1, d.sub.

Abstract: A power output apparatus (20) of the present invention includes a clutch motor (30), an assist motor (40), and a controller (80) for controlling the clutch motor (30) and the assist motor (40). The clutch motor (30) includes an outer rotor (32) linked with a crankshaft (56) of a gasoline engine (50) and an inner rotor (34) connecting with a drive shaft (22). The assist motor (40) includes a rotor (42) connecting with the drive shaft (22). An electric current flowing through three-phase coils (36) in the clutch motor (30) enables the outer rotor (32) to be coupled with the inner rotor (34) with a certain slip. Electrical energy corresponding to the certain slip is recovered as an electric power via a first driving circuit (91). The assist motor (40) is controlled with the electric power via a second driving circuit (92) so as to apply a torque to the drive shaft (22).

Abstract: A pulse action facial massager apparatus including a headset assembly for mounting to a user's head. A pair of flexible extension fingers extending from opposite sides of the headset assembly each of which is operably coupled to a vibrating device each generating an independent vibrating action. A tip portion of each extension finger is manually movable for selected contact at independent portions of the user's head. Hence, the respective vibrating device transmits the vibrating action thereof along the extension finger to the respective tip portion. Each vibrating device includes a motor that is controlled by an electronic controller mounted on the headset assembly. The controller permits user-variation of the repetition rate and duty cycle of the motors. This permits the user to vary the vibrational patterns produced by the present invention. In an automatic mode, duty cycle is automatically varied by a sawtooth waveform to produce a dynamically changing pattern of massage intensity.

Abstract: An improved load control system for controlling loads such as electric motors in a vehicle is disclosed. The system includes switching circuits, each associated with particular loads and placed in close proximity to the loads' respective switches. The system also includes several load control units which are placed in various locations inside the car, so as to minimize the possibility that all the control units will be damaged in a collision. Each of the switching circuits is capable of sending commands to each of the control units, and each of the control units is capable of controlling each of the loads in the car. Thus, when a failure occurs in a particular switching circuit, the associated loads can be controlled using another switching circuit.

Abstract: Automated diagnosis of drive trains having electrically operated components based upon the ability of a first servo motor to rotate a second servo motor when both servo motors are selectively coupled to the drive train. Beneficially, the status of the drive train is sent to a remote location using a data link.

Abstract: In order that each of its rotors (18 to 21) may he individually controlled, the transducer (1) comprises a stator (2) having two main parts (3, 4) and 2N+1 transverse parts (5 to 13). N openings (14 to 17) through each of which a stator (18 to 21) passes, are each arranged in one of the main parts in the prolongation of one of the even rank transverse parts. N+1 coils each surround one of the odd rank transverse parts.Application to selective driving of several mobile elements.

Abstract: A control apparatus for controlling motors of an air conditioner comprises a converter circuit having switching circuitry for converting AC power to DC power and setting an input voltage of an input alternating current waveform to a sine wave of the same phase as that of an input voltage, first and second brushless motors for driving a compressor and a blower, first and second inverter circuits for converting the converted DC power to AC power and supplying AC power to the first and second brushless motors, and a microcomputer for controlling the compressor and the blower of the air conditioner. The microcomputer is constructed in such a manner that input and output operations which are necessary to control the air conditioner are executed for input and output circuits, thereby controlling at least the compressor and the blower of the air conditioner.

Abstract: A drive unit capable of maintaining the stability of driving speed with respect to the driven part in which the motor is not used at a low drive efficiency.

Abstract: A rotary motor including the combination of an electromagnetically powered first motor and an electrically powered second motor. The first motor and the second motor being mechanically coupled to each other via a common drive shaft for delivery of produced rotary power. The first motor member includes at least one radially disposed electronically pulsed ON/OFF electromagnet member that magnetically couples to a rotatable permanent magnet member disposed on a flywheel member attached to the common drive shaft. The second motor member being electrically coupled to the first motor member for receiving secondary electrical energy produced from back-emf and/or electric power generated by induction at the electromagnet member. The second motor member is adapted with a flywheel member having embedded permanent magnets that influence the flux fields that surround the rotating armature and stator poles to enhance performance of the second motor.

Abstract: The rotor spinning machine includes a plurality of asynchronous motors for driving the operating elements of the machine. The motors run up from a standstill condition to an operating speed under the initial mass load of the operating elements. The machine includes a single soft-start control apparatus control circuit configured with the motors and the soft-start control apparatus for individually and successively connecting the motors to the soft-start control apparatus in a predetermined hierarchy.

Abstract: A redundant active hand controller system has first and second motors connected to a common shaft. A compensator which differentiates a motor command signal from a first proportional and integral controller, differentiates a motor command signal from a second proportional and integral controller and subtracts the first differentiated motor command signal from the second differentiated motor command signal to provide a correction signal. The correction signal is summed with the error signal into the first proportional and integral controller to correct for slight differences in the integral control function of the first and second proportional and integral controllers.

Abstract: An invention is disclosed which promotes even wear within a multiple-motor drivetrain. In one embodiment of the invention, a vehicle drivetrain includes two motors. The total torque to be provided by the motors is partitioned between the motors such that the total efficiency of the drivetrain is maximum. Such partitioning usually involves providing more torque from one motor than from the other. The motor selected to provide the greater torque does so until a predetermined number of differential torque-hours are accumulated between the two motors. The other motor is then selected to provide the greater torque, again until a predetermined number of differential torque-hours are accumulated. Excessive wear of one portion of the driveline is thus prevented.

Abstract: Plural systems of switching signals are obtained from a single microprocessor for driving a plurality of motors and other apparatuses while achieving effective use of ports of the microprocessor. In principle, three kinds of switching signals based on three-phase are generated in the microprocessor, the three kind of switching signals are converted to six kinds of switching signals in circuits external to the microprocessor, and then the signals are supplied to their respective switching elements in an inverter circuit.

Abstract: A motor control circuit for a wire bonding apparatus for manufacturing semiconductor devices, etc. using a feedback gain circuit which performs feedback control of a synthesized signal that drives a Z-axis motor for moving a capillary up and down. The gain value of the feedback gain circuit is controlled by a computer, thus allowing smooth and stable control of the motor operation even after rotational speed change of the Z-axis motor, and assuring a stable wire bonding.

Abstract: An electric motor vehicle control apparatus has a control circuit which includes a slip/slide detection circuit. A minimum value among the wheel speeds is used to determine a slip condition whereas a maximum value is used to determine a slide condition. A control signal controlling each of the motors driving the wheels may thus be adjusted for the detected slip or slide condition. The control signal may also be generated based on different diameter wheels resulting from frictional induced diameter variations.

Abstract: In an imaging apparatus with rotary table having a plurality of control items, operation completion of control items, such as horizontal angle, vertical angle, zoom and focus, of the imaging apparatus and the rotary table is detected by respective completion detectors and so on. On the basis of the logical product of all operation completion signals, an AND circuit 3 permits control toward the next desired value.

Abstract: The invention concerns a motor system of an electric type vehicle, comprising at least two asynchronous electric motors (M1, M2) supplied in parallel by a central electric supply. This central electric supply is controlled by a control device supplying thereto a first control signal (SCF) determining the value of the supply frequency (FAL) and a second control signal (SCA) determining the value of the supply amplitude (UAL) of the supply voltage. These first and second control signals are regulated essentially in dependence upon a signal (SMI) which is a measurement of the principal supply current (IAL), an instruction signal (SCS) and a signal (SFMX) representing the maximum value of the rotational frequency of the rotors (R2, R2) of said motors.

Abstract: A system and method for initializing a plurality of mechanical elements of a machine includes a plurality of housings and an uncoordinated motion controller. The housings are coupled to the mechanical elements and include at least a motor controller electrically connected to a motor. Each of the motor controllers have an associated position sensing component for sensing the position of the associated mechanical element along one axis. The uncoordinated motion controller instructs the motor controllers to operate its associated motor until the associated mechanical element reaches an initialization position. The velocity and acceleration profile of the respective motors are independent of each other, such that each of the motors moves its associated mechanical element in uncoordinated motion until each mechanical element reaches its initialization position. A multi-node daisy chained data bus electrically connects the uncoordinated motion controlling means and the motor controllers in series.

Abstract: An individual regulation circuit is provided for each position-regulated drive motor for a textile machine, such as drafting arrangement. It is contemplated by the invention to have each such regulation circuit encompass a position sensor which also can deliver a position signal during standstill of the motor shaft of the associated drive motor.

Abstract: A travel condition detecting section detects travel conditions of an electric motor car. According to the detected travel conditions, a required output calculating section calculates a required travel output. According to the calculated required travel output, a control commanding section determines travel outputs to be allocated to a plurality of motors coupled to driven wheels of the electric motor car, respectively in such a way that the total power consumption of the motors can be minimized, and further outputs control commands to the motors on the basis of the determined travel outputs allocated to the respective motors.

Abstract: An AC variable speed driving apparatus including an AC motor and an inverter for driving the motor. The AC motor includes a synchronous motor and an induction motor. The synchronous motor includes first stator windings and a first rotor having a permanent magnet. The induction motor includes second stator windings and a second rotor. The first and second stator windings are disposed so that they do not magnetically interfere with each other. The first and second rotors are mounted on a common axis of rotation. The inverter supplies AC power to the stator windings so that the synchronous motor and the induction motor are driven independently. A highly efficient, large output and low cost system can be realized in a wide speed range.

Abstract: A moisture sensor which registers the amount of moisture from tear-shaped precipitation, particularly on a windshield. The device includes a beam director which is mounted on the windshield by an optical adhesive. The beam director has a beam transmitter on one side and a beam receptor on the other. To ensure an optically perfect attachment of the beam director as an integrated unit to the windshield, there is a parallel relationship between the windshield and the facing surface of the beam director. An optical adhesive is applied to the gap between the windshield and the beam director, and is confined to a particular area.

Abstract: A flyer frame has a first AC motor for obtaining a general rotational movement of various parts of the frame and a second AC motor for obtaining only a variable component of the rotational movement of the bobbin. An inverter is provided for operating the first and second AC motor. A controller is divided into a general section for operating the frame powered by AC power source, and a winding section for obtaining a winding control of the frame. The winding control section is operated by a DC current, which is usually supplied by an outside AC source. A DC output of the inverter is connected to the winding section via a diode or relay, which usually disconnects the DC line to the winding section and which is closed upon the occurrence of the power failure, for supplying a regenerating current from the inverter to the winding section.

Abstract: A control system and process method for reducing energy consumption of flight simulators includes electronic circuitry to automatically control the starting and stopping of the large motors that drive the hydraulic pumps for the motion system. The electronic circuitry monitors existing signals in the simulator motion and control loading cabinet and determines when the motors need to be started or stopped automatically. The circuitry generates the necessary outputs to start and stop the motors at the user level, and interfaces to the manual (user) motor control switches. The Energy Saving Control System (E.S.C.S.) provides a safe and reliable means of producing substantial electrical energy savings.

Abstract: A machine control permits the selection of input values defining configurations of motors on the machine in desired master-slave relationships. Individual master-slave dependencies may be selectively activated and deactivated. In response to a new commanded velocity for a master motor the control is effective to alter the velocities of all motors dependent therefrom as a function of change of velocity of the master motor and selectable slave ratios.

Abstract: A multiplexor circuit connects a plurality of stepper motors to a lesser number of stepper motor drivers with at least one driver connected to a plurality of parallel connected stepper motors. A control computer through a multi-axis position controller generates step commands to the drivers to move one or more stepper motors a predetermined amount, at a predetermined speed and in a predetermined direction of rotation. The computer configures switches in the multiplexor circuit to connect selected ones of the stepper motors to selected drivers such that a plurality of stepper motors may be connected in parallel to a single driver such that a single driver can sequentially drive multiple stepper motors thereby reducing the number of drivers required for a plurality of stepper motors.

Abstract: The invention discloses a method and an apparatus for winding a cord continuously. A rotation of a winding bobbin around which a cord to be a tension member of a belt, is wound and detected directly or indirectly. A cord is forwarded in an axial direction of a winding bobbin at a pitch, which corresponds to a diameter of the cord, in relation to a rotation of a winding bobbin. The bobbin axis of the winding bobbin is rotated at a constant speed by rotation driving means so that the cord is wound around the winding bobbin. The rotation of the bobbin axis is detected by rotation detection means directly or indirectly. The cord is forwarded in the axial direction of the winding bobbin in relation to the rotation of the winding bobbin at a pitch which corresponds to the diameter of the cord by receiving signals from the rotation detection means.

Abstract: In a numerical control system for controlling a machine tool or a robot, control loops that are not used for the control of drive systems of the tool or robot are utilized to actuate other digital or analog devices. The actual value inputs of these control loops are preferably set to a constant value, such as zero, so that the control loop will switch specified control data through to its output as control signals. The control signals are converted by means of digital-to-analog converters into control voltages.

Abstract: An electric power supply device on a mobile vehicular apparatus includes an AC generator, a rectifier connected to the AC generator, for rectifying an electric current generated by the AC generator, a regulator connected to the rectifier, for maintaining the voltage with respect to the rectified electric current at a constant level, the regulator being connected to a power line for transmitting the electric current at the constant-level voltage to a DC electric actuator on a master control arm, and a battery connected to the power line. The master control arm controls a slave manipulator arm for processing or handling a workpiece. When the DC electric actuator is subjected to a large load and needs a large amount of electric power, the battery discharges and supplies the stored electric energy to the DC electric actuator.

Abstract: The stator current has a variable frequency which is changed by using a predetermined frequency change rate. The resulting effective value of the stator current is compared with the current control variable. If it is greater the frequency is now kept constant. If this corresponds to the setpoint speed the process terminates, if not, the frequency change will start again as soon as the effective value gets smaller than the current control variable. An a.c. voltage mains may operate, accelerate or brake the motor via a rectifier and an inverter, in cases of voltage failure the stator current is switched through to a load resistor. The variation of the speed may follow a steady or a garland-shaped course, from the from and dimension of a festoon element a measure for the "torsional rigidity" may be obtained. By means of shifting between star connection and delta connection the frequency range may be expanded in order to keep the torque essentially the same.

Abstract: An inverter control device for controlling an induction motor that drives elevators, has two induction motor coils that are electrically separate with inverters connected to each coil, and a control device that controls these two inverters with the same current command. The preferred structure is one where one control system outputs one current command to two inverters, the inverter control device has two separate control systems that divide one current command and output each half to the respective inverter and one carrier circuit that modulates each control system at the same timing, or two separate converters are connected to the power element of the respective inverters.

Abstract: A centralized control unit that includes supply circuits for supplying various motors for controlling movements of parts of a vehicle seat, an in-board power source for feeding the supply circuits, an inverting device for enabling a control with inversion in a rotation direction of the various motors, and a study carrying wheel having a set of studs for enabling a selection of each of the various motors, with each of the set of studs being connected to a circuit of one of the various motors for controlling one of the parts of the seat.

Abstract: A ring spinning machine with various driving systems 10, 12 for driving spindles, driving arrangements, ring rails and the like is regulated in the case of power failure down to a zero revolution range while maintaining preselected revolution relationships. The driving system which is allocated to the load with the greatest effective inertia serves, at first, for the supply of the other driving system in a generator service. Only in a lower revolution range are the driving systems backed via a battery of relatively low capacity.

Abstract: A drive and recharge system is disclosed that includes a bidirectional dc power source, two voltage-fed inverters, two induction motors, and a control unit. In the drive mode, power is bidirectionally connected between the dc power source and the motors. In the recharge mode, single-phase power applied to the neutral ports of the two motors is converted with unity power factor to return energy to the dc power source. An alternate scheme is also presented which uses a single motor having two sets of windings.

Abstract: An apparatus for selectively controlling a plurality of electric motors for driving individual work objects, the apparatus including an electrical switch which is adapted to produce predetermined speed signals for the electric motor selected, a programmable controller disposed in signal receiving relation relative to the electrical switch and which is adapted to generate a predetermined signalling sequence in response to the signal received from the electrical switch, a variable speed motor drive electrically coupled with the programmable controller, and with the electric motor selected, the variable speed motor drive selectively driving the selected electric motor at a predetermined speed in response to the signalling sequence received from the programmable controller, and a sensor adapted to indicate the work performed by the electric motor whereby the electric switch may be selectively adjusted to control the operation of the electric motor selected.

Abstract: Control arrangement for an electric motor having a control arrangement which, in accordance with at least one nominal value fed thereto, controls at least one power control element to be connected to an electrical network and the motor, including data transmission apparatus in the form of a computer device for applying to the control arrangement data received by the computer device from at least one of a device for determining the data and a memory wherein the data are stored.

Abstract: An apparatus for selectively controlling a plurality of electric motors for driving individual work objects, the apparatus including an electrical switch which is adapted to produce predetermined speed signals for the electric motor selected, a programmable controller disposed in signal receiving relation relative to the electrical switch and which is adapted to generate a predetermined signalling sequence in response to the signal received from the electrical switch, a variable speed motor drive electrically coupled with the programmable controller, and with the electric motor selected, the variable speed motor drive selectively driving the selected electric motor at a predetermined speed in response to the signalling sequence received from the programmable controller, and a sensor adapted to indicate the work performed by the electric motor whereby the electric switch may be selectively adjusted to control the operation of the electric motor selected.

Abstract: A device and method for temporarily maintaining a voltage level in a control circuit for auxiliary devices in a textile spinning machine, winding machine or the like wherein the control circuit is connected to an intermediate direct current circuit that is in series between a line voltage and the drive motors of the machine. The method includes reversibly supplying current from the intermediate circuit to the motors and inversely supplying current generated by the residual inertial energy of the motors to the intermediate circuit. The supplying of reversible current is controlled in response to a drop in line voltage to maintain the voltage level of the intermediate circuit and therefore of the control circuit supplying auxiliary devices. The controlling includes sensing a drop in line voltage and generating and transmitting control signals to reversibly supply current.

Abstract: An electric motor comprising a motor overload protection such as a thermal switch and a main relay for controlling a multipolar switch in the voltage supply conductors of the motor. The thermal switch and the main relay are mounted in a control circuit in parallel with the voltage supply conductors. An auxiliary relay is coupled in parallel with the main relay and can connect an auxiliary motor via a contact arm when the thermal switch is switched off.

Abstract: This invention concerns a method of controlling mill-motor speed in a cold tandem mill. During unsteady phases of rolling operation such as threading, rolling speed acceleration and/or deceleration, and tail out with respect to the coil being rolled, mill motors are so controlled as not to perform drooping characteristic action except under certain specific conditions, and at threading phase in particular, motors in individual stands are so controlled as to revolve at a uniformly decreased speed, whereby final gauge control accuracy can be improved with respect to top and bottom end portions of the coil and such troubles as coil cut and the like can be effectively prevented.

Abstract: A plurality of arbitrarily loaded induction machines are operated from a single, controlled current inverter by regulating the amplitude of inverter output current in response to the average of the individual induction machine phase angles, the machine phase angle being the phase relationship magnitude between machine air gap flux and current, and by regulating the frequency of inverter output current in response to the average of the individual induction machine phase angle and the slip frequency of the most heavily loaded induction machine. The most heavily loaded induction machine is thus assured of having sufficient flux, thereby greatly reducing the possibility of machine pull-out and resultant inverter instability.

Abstract: A plurality of permanent magnet DC motors are grouped into two banks. One side of each motor in one bank is connected to a first common supply conductor while one side of each motor in the other bank is connected to a second common supply conductor. Independently operable switches are provided for connecting the other sides of respective ones of the motors in the first and second banks to a third common supply conductor. Three additional power switches are provided for reversibly connecting a source of potential across either bank of motors. By proper switch selection one or more motors in either of the banks may be operated in a selected direction of rotation.

Abstract: An induction and universal (commutator) motor combination which share a common lamination core and are supplied by a single-phase line. The stator and rotor are provided with multiple poles and phase windings. A winding system for at least one rotor phase winding is common to commutator motor as well as induction motor operation. A lap winding is connected to a commutator, said lap winding having a coil span corresponding approximately to a single pole pitch of the commutator motor stator winding and corresponding as well to an uneven integral multiple of the coil span of the multi-pole induction motor stator winding. The invention finds particular application in regard to drives for automatic washing machines.

Abstract: A cable extending onto a drum-cutter loader mining machine has divided branch cable sections to supply electrical current to the individual drive motors for each of two cutting drums. A branch switch coupled in each divided branch cable section and a thyristor controller is coupled in one branch cable section before the switch therein. Crossover lines bridge the branch switches in each divided branch cable section. Bridge switches in each of the bridging crossover lines are used together with the branch switches to deliver electrical current from the controller to either or, if desired, both of the separate drive motors.

Abstract: A switching control circuit for an electrically adjustable patient chair that utilizes a relay control circuit comprised of a plurality of switching control relays connected in a binary switching arrangement which in the preferred embodiment herein, permits the use of only three control relays to control six motor adjustment functions.

Abstract: A method and a circuit arrangement for driving a two co-ordinate mechanical oscillator with the aid of a deformed rotating field of forces defined by a plurality of exciting and pick-up components. The power dissipation of the employed circuits is kept at a low level by operating the oscillator near the mechanical resonance frequency. The exciting signals are achieved by comparing phase shifted electrical signals derived from the mechanical motion of the oscillator in a first pick-up component with the undisplaced signals of the second directional component and by supplying the difference signal obtained therefrom to the second exciting components of the oscillator. This is continued to the next adjacent components until the ring is closed.

Abstract: An AC generator or other AC source has two identical output sections which are connected through corresponding rectifiers to drive a DC load such as a group of DC traction motors connected in parallel for driving a locomotive. The rectifiers are selectively placed in parallel to provide a high current low voltage mode and in series to provide a low current high voltage mode, thus furnishing a wide range of voltage and current at a given power level to satisfy a broad range of motor requirements with a power source of limited size and capability. To effect smooth transition, one of the rectifiers includes SCR's to modulate the rectifier output voltage. During transition that rectifier is phase back to zero voltage, allowing the other rectifier to supply the full load requirements and then the rectifiers are switched from series to parallel or vice versa whereupon the modulated rectifier is returned to its full voltage.