Abstract: An intelligent wiper system and method for wiping a windshield is disclosed having a microprocessor which controls the operation of a motor and which is capable of setting a baseline delay time using one or more wipe times, with the baseline delay time generally corresponding to a time interval between consecutive wipes of at least one wiper blade. The system and method automatically adjusts the baseline delay time in response to the second wipe time if the second wipe time is not substantially the same as a function of the first wipe time, wherein the function includes a predetermined constant which is at least one hundred percent of a first wipe time. An upper baseline wipe time threshold and a lower baseline wipe time threshold may be established such that the delay time is not adjusted if a current wipe time falls between such thresholds.

Abstract: The present invention relates to an apparatus and a method for a motor vehicle security system relating to immobilizing and enabling of a fuel pump for a motor vehicle engine. The system comprises data input means for receiving driver verification data, an engine control unit (ECU) including an ECU processor for controlling engine operation, a pump control unit (PCU) including a PCU processor for controlling the fuel pump, the PCU being separate from the ECU and integrally housed with the fuel pump. Communication links permit communication between the data input means and ECU, and between the ECU and PCU. The ECU processor is activated to control the PCU when valid driver verification data is received. The PCU processor is then activated to communicate a challenge code to the ECU. The ECU and PCU processors then compute respectively a first and a second response code associated with the challenge code.

Abstract: A light leakage preventing structure of a combination meter includes: a plurality of scale plates being arranged so that their edges face each other with a gap being provided therebetween; and a light shielding member to be mounted to rear surfaces of facing portions of the edges. In the structure: the edges of the facing portions of the scale plates are formed into a flat plate shape; and the light shielding member has a dark space opened towards the facing portions.

Abstract: A method and system for providing enhanced diagnostic ability for monitoring vehicle performance characteristics includes utilizing a combination of temperature and lubrication level information. A first sensor monitors the temperature of a selected component, such as an axle, while a second sensor detects an amount of lubrication associated with that component. An electronic controller utilizes the temperature and lubrication level information to determine a performance characteristic and determines whether the selected component is operating within an acceptable range. The electronic controller preferably provides information to a vehicle operator through an on-board display indicating the monitored and determined characteristics on a real-time basis. Additionally, the electronic controller includes a memory module that stores performance characteristics information over time so that information can be provided to a service technician utilizing an external diagnostic computer.

Abstract: A radio frequency isolation system for geographically distance signal sources comprising AC and DC signals which develop differences in ground potential includes a control cabinetry chassis with the DC input signal source being electrically grounded to the chassis at the input side of the cabinetry and a hybrid circuit connected to the chassis through capacitors with the AC input signal being connected to the hybrid circuit for grounding the signal at both the input and output ends of the hybrid circuit to the chassis.

Abstract: An electronic disconnect circuit protects an electronic device, such as a radio, installed in a motor vehicle from overvoltage condition in which the normal internal protection is inadequate. A normally closed relay includes 2 sets of terminals connected in the ground conductor and in the voltage conductor of the power cable connected to the electronic device. The relay coil is connected through a diode which becomes conductive if the voltage in the ground conductor rises above the voltage in the other conductor, thus protecting the radio or similar electronic device from a reversal of polarity as would occur when a battery charger or similar device is improperly connected to the vehicle. A switching transistor responds to an over voltage condition to turn on the relay coil when an over voltage condition occurs, such as during a high voltage jump start or a high voltage transient condition.

Abstract: When a control unit for controlling a 2-motor-3-relay type locking system makes a transition to, for example, an N/L (lock) state, the two motors are turned on or off such that operation timings of the motors are shifted from each other by a period of time longer than a shift amount (variation) of required operation times of the relays.

Abstract: A method for determining an alternate path by a mobile machine to avoid at least one obstacle. The method includes the steps of assigning an initial value of charge to the mobile machine, assigning a value of charge to a desired destination, determining the presence and the locations of at least one obstacle, and assigning a value of charge to each determined obstacle. The method further includes the steps of determining a force vector equation for each of the desired destination and each obstacle with respect to the mobile machine, determining a resultant force vector as a function of the force vector equations, and controlling the steering and movement of the mobile machine in response to the resultant force vector.

Abstract: An electrical interface for connecting a truck electrical system to a trailer electrical system. The electrical interface includes a solid-state switching device for selectively connecting a power source in the truck electrical system to a circuit in the trailer electrical system. If a fault is detected in the provision of power to the circuit in the trailer electrical system, the solid-state switching device reduces the flow of power or disconnects the power source from the circuit in the trailer electrical system. A microcontroller system connected to the truck electrical system transmits control signals to the solid-state switching device to control the flow of power from the power source to the circuit in the trailer electrical system in accordance with instruction signals received from the truck electrical system.

Abstract: A vehicular use power feed apparatus comprising a battery and a plurality of power distribution units connected in a loop via power feed lines. Each power distribution unit has a current monitoring circuit, a current amount determination circuit, and a current direction determination circuit, detects the direction of current and magnitude of current flowing through the power feed line, and thereby detects an occurrence of a short-circuit. A control unit exchanges information regarding occurrence of short-circuits with adjoining power distribution units via a multiplex signal transmission unit so as to pinpoint the trouble point. The control unit operates the relay switch circuits on the two sides to break the connection so as to isolate the trouble point in cooperation with the control unit of the adjoining power distribution unit. The other relay switch circuit is operated to establish a connection so as to establish a new power feed line.

Abstract: A panel-mounted garage door remote control is comprised of a housing with a front end removably fitted into a sleeve on a mounting bezel. Conventional remote control circuitry is arranged in the housing. A pair of control switches at the front of the housing are in engagement with buttons on the bezel, and an indicator lamp at the front of the housing is positioned through a hole on the bezel. The remote control is inserted into an existing accessory mounting hole in an interior panel of a car. The bezel is sized to fit flush with the surface of the hole to provide a neat appearance. The housing is interchangeable with other bezels sized to fit accessory mounting holes in different cars.

Abstract: The disclosed invention comprises an electronic control circuit for transferring power and data signals between an electronic circuit associated with a vehicle steering column and an electronic circuit associated with a vehicle steering wheel. Communication between the column circuit and the wheel circuit is accomplished by a rotary transformer having a primary and a secondary magnetic coil, wherein the primary magnetic coil is associated with the steering column and the secondary magnetic coil is associated with the steering wheel. The column circuit and the wheel circuit both include data signals that are transferred to the other across the rotary transformer. The column circuit also includes a power supply which provides power to the wheel circuit across the rotary transformer.

Abstract: An EMI preventive AC line filter includes rack having a rectangular top open chamber and two substantially U-shaped support arms at two opposite ends of the top open chamber, a cylindrical winding holder formed of two symmetrical halves and mounted in the top open chamber of the rack, the winding holder having an axially extended cylindrical coupling groove at the center, and an iron core coupled to the winding holder and secured to the rack to hold the winding holder in place, the iron core having a U-shaped peripheral wall forced into engagement with the U-shaped support arms of the rack, and a cylindrical shaft connected between two parallel side wall portions of the U-shaped peripheral wall and received in the axially extended cylindrical coupling groove in the winding holder.

Abstract: Proposed is a control device (50) for a windshield wiper that serves in actuating a further window wiper. The control device (50), having an inventive embodiment, includes a control (18), whose signal output (20) provides first control signals (42) for actuating the windshield wiper, preferably a front windshield wiper (26) of a motor vehicle, and whose further signal output (22) provides further control signals (42) for actuating a further windshield wiper, preferably a rear window wiper (30).

Abstract: An opening portion (2) is formed on an instrumental panel (1). A plurality of units (U1-U3) and a panel body (P) corresponding to the units are arranged. The units (U1-U3) have neither an input portion such as switches operated by the passenger nor an output portion such as a display for the passenger, and switch groups (7, 8) and a display (5) are mounted on the panel body (P). The units (U1-U3) and panel body (P) are coupled and connected to each other in advance to obtain an electronic equipment assembly. Of this assembly, the units (U1-U3) are stored in the instrumental panel (1) via the opening portion (2), and the opening portion (2) is covered by the panel body (P), so that the panel body (P) constitutes a portion of the wall surface in the passenger room.

Abstract: An entertainment system for a motor vehicle comprises a radio, a source of recorded music connected thereto, at least one loudspeaker, and at least one transducer arranged to receive the voice of an occupant of the vehicle and to produce an electronic signal output, and an electronic circuit for receiving said signal and for coupling the signal output to said radio.

Abstract: A vehicle-equipment control apparatus comprises a plurality of types of control instruction units respectively having different switch functions and incorporating different diode-connected circuits therein, unit mounting portions to which the plurality of types of control instruction units are mountable, and a control instruction unit determinator which, when any of the plurality of types of control instruction units is fit to the unit mounting portions, determines the type of the fit control instruction unit based on the output of each built-in diode-connected circuit. In this case, the diode-connected circuit is made up of two or more diodes or comprised of two or more diodes and one resistor.

Abstract: A circuit for current limiting in a protection system, in particular for the firing of the firing pellet of an airbag system. The circuit has a switched-mode regulator connected to a low-pass filter that cooperate to limit the average and the peak value of the current flowing through the firing pellet. The switched mode regulator has switches that are switched on when the current flowing through the firing pellet falls below a reference value.

Abstract: A window wiper motor system for an automotive vehicle includes an incremental wiper position detection device. A window wiper feedback pattern is disposed on a stationary circuit board mounted within a gear enclosure with its electronic components facing inwardly toward a main gear. A low profile, flip chip integrated circuit attachment to the printed circuit board is also provided.

Abstract: Apparatus for controlling the rotational movement of a ladder or the like of mobile equipment having stabilizing outriggers when the ladder is rotated manually to the side of the mobile equipment which does not have the outrigger fully deployed. A two-part switch, arranged for one part to rotate relative to the other, develops various combinations of signals dependent upon the relative positions of the parts of the switch. A control circuit is arranged to recognize the positions of the switch parts and supplies control signals which allow the ladder to rotate at a particular rate and to a particular point as the operator is steering the ladder to the side of the mobile equipment at which the outrigger is not fully deployed.

Abstract: An improved driver interface system provides prompts to an operator to adjust several vehicle parameters. In this way, the operator is assured to adjust the necessary components upon start up of the vehicle. This is particularly important when the driver is unfamiliar with the car, as with a rental car. In one embodiment, the driver may be provided with a transmitter that stores desired settings for at least some parameters. The transmitter can then transmit the operator's desired parameters to a control, and the vehicle components can then begin to be moved to the desired positions as the operator approaches the vehicle. In other aspects of this invention, improved switches are disclosed. A rotary switch rotates on a steering wheel rim. This switch is easily accessible to an operator, and does not require the operator to divert attention from the road. A second type switch includes an element which is sensitive to touch by the operator.

Abstract: In a four-wheeled all-terrain vehicle, a handlebar bracket is attached to the upper end of a steering shaft, a handlebar has a central part fastened to the handlebar bracket with clamping members, a bracket is attached to the clamping member, and a handlebar cover is fixedly attached to the bracket so as to cover the central part of the handlebar from above. An accessory socket is disposed inside the handlebar cover and is held on the bracket. An accessory plug electrically connected to an external electric apparatus can be inserted inside the handlebar cover through a recess formed in a side wall of the handlebar cover and can be connected to the accessory socket. A battery is electrically connected to the accessory socket.

Abstract: Actual time of operation of a plurality of motorized vehicles is automatically recorded utilizing an operation logging circuit installed in each of the vehicles. Each operation logging circuit in each vehicle includes a memory button located in a protected enclosure and programmed with a unique vehicle identification code. Each memory button also has an electronic register for accumulating aggregate vehicle operation time. The memory button is electrically connected to the vehicle direct current electrical system for detecting actuation and deactuation of vehicle operation. For example, the connections to the memory button may be from the contacts for enabling the power steering, contacts for engaging the vehicle for forward and reverse movement, or contacts for the key switch for providing electrical power to the vehicle. A voltage regulating system steps down the power from the vehicle to the level of 5 volts which is required for operating integrated circuits.

Abstract: A fifth wheel coupling safety system for indicating when a king pin is properly locked into a fifth wheel assembly. The system includes a fifth wheel assembly having a slot for receiving a king pin of a trailer and a locking mechanism for coupling the king pin to the fifth wheel assembly. The locking mechanism has a locking jaw adapted for coupling the king pin to the fifth wheel assembly, and a pull handle for positioning the locking jaw between locked and unlocked positions. The locking jaw couples the king pin to the fifth wheel assembly when in the locked position and permits separation of the king pin from the fifth wheel assembly when in the unlocked position. The pull handle is positionable between a locking position and an unlocking position. The pull handle positions the locking jaw in the locked position when the pull handle is in the locking position and the pull handle positions the locking jaw in the unlocked position when the pull handle is in the unlocking position.

Abstract: A miniaturized high frequency switching device is capable of giving an optimum over-all impedance over the length of a signal path while compensating for inevitable impedance variation seen in a particular segment of the signal path. The switching device includes a contact block having fixed contacts and a movable contact. The fixed contacts and the movable contact are surrounded by an electromagnetic shield which is supported on a conductor base to be grounded therethrough for isolating the current path from a surrounding electromagnetic field. The fixed contacts are formed respectively on one ends of terminal pins provided for electrical connection to an external load circuit operating on high frequency signals. The terminal pin extends through an insulation ring fitted in the conductor base so as to be electrically insulated therefrom and form the signal path flowing a high frequency current.

Abstract: Antennas of an anti-theft system are controlled with a pulse width modulated square-wave signal by a power control unit and a phase control unit. The control is such that a change in power causes no change in phase, and vice versa. This is accomplished by varying the pulse width of the square-wave signal if a change in power occurs and at the same time shifting the pulse rise time such that the phase remains constant.

Abstract: A short prevention control apparatus of an air conditioner for electric vehicles comprises a circuit breaker for a high voltage power source used to drive a compressor of the air conditioner, a drive circuit for driving a compressor motor and a short detecting circuit connected between a coupling wire and ground, wherein the wire connects the circuit breaker and the drive circuit. The short detecting circuit detects a short at a position between ground and a polar bus terminal of the drive circuit or an internal terminal of the compressor motor, when supply of a high voltage direct current is interrupted by the circuit breaker. A short in the air compressor side may be detected and determined without affecting the running of the electric vehicle.

Abstract: One embodiment of an engine has an electrical system generally comprising a charge circuit and an ignition circuit. A primary power supply circuit connects the charge circuit and the ignition circuit through a non-contact switch circuit. The non-contact switch is adapted to connect the primary power supply circuit to the ignition circuit when the engine is started. A secondary power supply circuit is coupled to at least one electrical component and to the ignition circuit. The secondary power supply circuit has a main switch and a fuse arranged upstream of the main switch. Upon closing the main switch, the engine is started and the primary power supply circuit and the associated non-contact switch are closed. Another embodiment of the engine has an electrical system which adds control of a fuel injector circuit. The fuel injector circuit is in electrical communication with the ignition circuit and a switching circuit which controls the ignition circuit and the fuel injector circuit.

Abstract: A communication network for vehicle control and a method of diagnosing the same in which the self-diagnosis functions attributed to some of control units in the communication network are combined with a manual diagnosis operation, whereby the diagnosis can be carried out by a relatively simple arrangement without sacrificing readiness and correctness, thus ensuring higher cost performance and reliability. The communication network includes control units, each coupled to at least one of auxiliary input and output devices, connected with communication lines to one another for transmitting and receiving unique signals. Each of at least two of the control units includes a transmitter, a receiver, a controller, and an indicating means, and has a diagnosis function.

Abstract: An isolator having a driver circuit which responsive to an input signal drives appropriate signals into one or more coils which are magnetically coupled to one or more corresponding MR or GMR elements whose resistance is variable in response to the magnetic field applied by the coil(s), and an output circuit that converts the resistance changes to an output signal corresponding to the input signal. A Faraday shield is interposed between the coil(s) and the MR or GMR elements. Common mode transients applied to the driver are capacitively coupled from the coil(s) into the Faraday shield and therethrough to ground, instead of into the MR elements. A second Faraday shield may be disposed in spaced relationship with the first Faraday shield and referenced to the potential of the MR elements for even greater common mode rejection. The entire structure may be formed monolithically as an integrated circuit on a single substrate, for low cost, small size, and low power consumption.

Abstract: An electrical interconnection module forms part of the structure of an automotive vehicle instrument panel and connects electrical components disposed thereon with a bulkhead connector on the forward fire wall of the vehicle. The interconnection module has electrical connectors disposed thereon at various locations for making connection with the electrical components. A plurality of bus bars are disposed in a group on the surface of the module and form part of an electrical junction block integrated with the module. Narrow grooves extend along the surfaces of the module and have wires embedded therein to provide electrical interconnection between the connectors and the bus bars. The bus bars and the terminals of the electrical connectors comprise insulation displacement connectors for making connection with the wires.

Abstract: A towing and brake circuit includes a power source and a switch electrically connected between the power source and a park brake solenoid. A flasher module is electrically connected to the park brake solenoid. A unidirectional current controller may preferably be electrically connected between the park brake solenoid and the flasher module to electrically connect the park brake solenoid to the flasher module. An engine oil pressure switch is electrically connected between a power source and the park brake solenoid to flow current from the power source to the park brake solenoid when engine oil pressure is generated.

Abstract: In a power window apparatus in which between a car power source and a ground, a first series circuit formed of a first switch and a first relay and a second series circuit formed of a second switch and a second relay are connected; when the first switch is operated, the first relay is energized, a motor is rotated in one direction due to switching of contacts of the first relay, and a window is raised; and when the second switch is operated, the second relay is energized, the motor is rotated in the other direction due to switching of contacts of the second relay, and the window is lowered, the first switch and the second switch each have one circuit with two contacts, and the fixed contacts which are switched when the first switch or the second switch is not operated are grounded.

Abstract: A vehicle brake device has wheel brake actuators or wheel brake units which are provided with electronic circuits. The actuator or units can be actuated by at least one redundant communications system. Transmission of data takes place on the at least one communications system according to a predefinable communications matrix in a time-controlled and fault-tolerant manner.

Abstract: A back-up battery system is provided for use with a real-time clock of an on-board device controller. In its normal operation, the real-time clock (RTC) is powered by a primary power source, such as a vehicle battery. When the primary source is interrupted, the back-up battery system is invoked to provide back-up power to the RTC. The system includes a low voltage dry cell battery mounted within a fuse component configured for electrical engagement within the vehicle fuse block. In one embodiment, a relay is interposed between the fuse component and the RTC to make and break the back-up power circuit in response to the state of the primary power source. In another embodiment, the battery within the fuse component is replaceable, with the fuse component including a base and a removable cap. In still another embodiment, the battery within the fuse component is a rechargeable battery, and the back-up power system includes a recharging circuit operable with the primary power source.

Abstract: A voltage supply apparatus for providing a supply voltage for electric devices in an aeroplane cabin comprises a socket (22) to which the electric device is connectable by means of a plug (38). The socket (22) comprises plug detectors (45, 46) detecting the presence of the plug in the socket (22). A supply device (16) is arranged remotely from the socket (22) and is connected to the socket (22) via a signal line (18) and via a supply line (20) for the supply voltage. The supply device (16) applies the supply voltage to the socket (22) if the plug detectors (45, 46) indicate the presence of the plug (38) via the signal line (18) to the supply device. The supply lines (20) and the socket (22) are only alive if the insertion of a plug (38) has been detected. In this way, a danger to people due to manipulations on the socket or on the supply line is excluded.

Abstract: The arrangements essentially comprise an antenna element placed in the vicinity of a radiating conductor of the equipment in such a manner as to absorb the electromagnetic energy reaching it by coupling with the radiating conductor.

Abstract: Pressure sensors on the bottom surface of a seat cushion respond to occupant weight. A microprocessor evaluates the sensor outputs according to total force, load rating, long term average, sensor groups and a fuzzy measure to discriminate between large and small occupants and allow air bag deployment for large but not small occupants. Allow and inhibit decisions are filtered avoid sudden response to transient pressure changes on the seat. When a large occupant is positively detected, an allow decision is locked in place as long as total force exceeds a threshold.

Abstract: An electronic control system including a collision avoidance system is for use on an electric cart, such as used for shopping, wherein the electronic control system includes a databus board for expanding user options on the electric cart. The collision avoidance system includes sensors which detect the presence of objects in the path of the moving cart and the system acts to stop the cart when the objects are detected. Additional user options of the electronic control system are an anti-theft system for deterring cart theft and vandalism and a voice module for playing recorded messages to the cart operator.

Abstract: A motor vehicle propulsion system includes an electrical energy source and a traction motor coupled to receive electrical energy from the electrical energy source. The system also has a first bus provided electrical energy by the electrical energy source and a second bus of relatively lower voltage than the first bus. In addition, the system includes an electrically-driven source of reaction gas for the electrical energy source, the source of reaction gas coupled to receive electrical energy from the first bus. Also, the system has an electrical storage device coupled to the second bus for storing electrical energy at the lower voltage. The system also includes a bidirectional energy converter coupled to convert electrical energy from the first bus to the second bus and from the second bus to the first bus.

Abstract: An interlock system for a lawn and garden tractor or similar vehicle includes a PTO switch having off, on and momentary on positions and connected to a latching relay to provide PTO operation in reverse if the switch is moved to the momentary on position prior to the vehicle being shifted into reverse. Once the vehicle is operating in reverse with the PTO activated, the operator can release the switch from the momentary on position and the PTO will remain activated. However, once PTO operation has been interrupted for any reason, the PTO can be reenergized only after reverse operation has been stopped and the PTO switch has been moved to the off position.

Abstract: The present invention relates to an arrangement for reduction of magnetic alternating fields for example in a vehicle or similar which comprises at least one electrical system which comprises at least two elements of which at least one comprises one or more components generating and/or consuming electricity, and which are connected through at least one connecting cable in which flows a current having an alternating current component generating a low frequency magnetic field. The arrangement also comprises at least one detecting element which is arranged to detect the alternating current component, and means for generating a compensating current with the use thereof. The compensating current flows adjacent to the connecting cable in such a way that the low frequency magnetic field is reduced or eliminated.

Abstract: A power supply system having a primary control power line for supplying electric power to control systems indispensable to driving the vehicle from an electric power source. The power supply system is provided with an ignition switch cooperating with an ignition switch system so as to connect the electric power source to the indispensable control systems when an ignition key is turned to the ignition position and to disconnect the electric power source when the ignition key is turned to the off position. The power supply system also includes a subordinate control power line including a removable fuse for supplying electric power from the electric power source through the ignition switch system to at least those control systems indispensable to driving the vehicle.

Abstract: A control module, in particular for a control circuit in a motor vehicle, is configured in such a way that it can be produced economically. The control module has a two-part housing which includes a lower part and an upper part. The lower part is configured as a plate, having a connector member for a downstream device, which can be joined flat to a circuit board. The circuit board is populated on a front side with components which can be soldered with the reflow method to connector parts of the circuit board. The upper part, which is configured as a cover, has an opening to receive a plug connector, and can be snap-locked onto the plate. The control module is preferably used in automobile engineering.

Abstract: The invention concerns a procedure for selectively connecting a status detection device--from a group of such devices based on different physical action principles, in particular belt buckle status detection, and seat occupation detection, within a passive safety system for motor vehicles, in particular an airbag system, and/or a belt pretensioning system,--to the signal input of a control unit, using a single wire connection, by causing the control unit to activate an appropriate current/voltage supply in accordance with the physical action principle, and by appropriately processing the signals generated by the status detection device, which signals will then be fed to the control unit for evaluation. Furthermore, an interface circuit is specified for implementing the procedure according to the invention.

Abstract: An open loop control arrangement for an electrical energy flow-controlling circuit coupling the varying terminal voltage of an energy storing capacitor to a fixed voltage direct current aircraft energy supply bus in order to supplement bus voltage transients. The open loop control arrangement allows energy flow from the varying terminal voltage of the capacitor to the fixed bus voltage by providing a time varying pulse modulation cycle in an energy conveying and voltage changing inductive element located in the energy coupling path. The open loop control arrangement senses input voltage rather than output voltage of the coupling circuit in what is termed a "feed forward " output regulation algorithm. A transistorized and integrated circuit inclusive preferred embodiment of the invention is disclosed in which a disconnect of the inductance from the aircraft supply bus is accomplished during shunt path inductance energy charging portions of an operating cycle.

Abstract: The invention relates to a pressure switching device of the type used in motor vehicles and includes a pressure sensor 21 arranged in a housing 3, which generates an electrical signal U according to the pressure p of a pressure medium or monitored fluid transmitted through a supply opening 15 of housing 3. The pressure switching devices includes an interpretation and switching unit 55 adapted to received the electrical sensor signal U and is further adapted to compare the sensor signal with at least one switching threshold value to trigger a switching function or a sequence of switching functions upon the electrical sensor signal exceeding and/or falling short of the switching threshold value.

Abstract: A hybrid vehicle comprises a motor driving the vehicle's wheels, multiple batteries supplying electric power to the motor, and a generator driven by an internal combustion engine to generate electric power for charging the batteries. Battery sensors detect terminal voltages of the batteries. An ECU controls a DC/DC converter to distribute electric power to independently charge the batteries through charge lines in accordance with the shortage of charge in respective batteries when excess electrical power is available from the generator even after a required amount of electrical power from the generator is used to rotate wheels.

Abstract: An overhead line for electrical energy transmission includes at least one phase conductor which receives a phase current which has a phase and an amplitude. A compensation loop surrounds the at least one phase conductor. A compensation current which has a phase and an amplitude is fed into the compensation loop by a driving voltage. The phase and the amplitude of the compensation current is set with respect to the phase and the amplitude of the phase current flowing in the at least one phase conductor such that a magnetic flux produced by the compensation current counteracts a magnetic flux produced by the phase current. At least one additional loop surrounds the at least one phase conductor connected to the compensation loop. The driving voltage for the compensation current is produced in the compensation loop and in the at least one additional loop. The compensation loop and the at least one additional loop define the at least one phase conductor into at least two main sections.

Abstract: A coil for bucking out undesired ambient time varying magnetic fields in the region of the gap in an MRI magnet structure is energized by a servo loop controlled by a Flux Lock Circuit having, in turn, a closed loop circuit controlled by a magnetic sensor. The sensor has a pair of windings energized in parallel by a 2 KHz oscillator, the windings being oppositely poled to induce zero voltage in a third winding to which feedback signals are supplied. Extraneous fields cause an asymmetry in the current passing through the pair of windings which asymmetry is accompanied by the generation of second harmonic components which are detected and fed back to the third winding for restoring symmetry. The signal fed back to the third winding is also used for controlling the current supplied to the field bucking coil.