Abstract: The present invention provides a method for manufacturing a variable speed accelerator including: a preparation step of preparing a variable speed electric motor 71 including a variable speed rotor 72 in which a shaft insertion hole 74 extending in a horizontal direction is formed, a first variable speed rotor bearing 85i and a second variable speed rotor bearing 85o that rotatably support the variable speed rotor 72 by aligning an axial direction of the variable speed rotor 72 in the horizontal direction, and a variable speed stator 86 that surrounds the variable speed rotor 72 from an outer circumferential side; and a shaft insertion step of inserting a constant speed shaft 77 into the shaft insertion hole 74 of the variable speed rotor 72 in the horizontal direction so as to penetrate the variable speed rotor 72 after the preparation step.

Abstract: A motor module includes: a motor; a driving unit; a control unit; a communication unit that performs communication via a network in the vehicle; and a connection unit to which an operation module is connected without going through the network. The control unit determines identification information of a vehicle-mounted device based on a voltage applied according to a connection state between the motor module and the operation module, controls the driving unit based on control information with information which coincides with the identification information transmitted from a management module that manages the motor module and received by the communication unit, and controls the driving unit to operate the vehicle-mounted device based on an operation signal input from the operation module according to an operation state of the operation module via the connection unit.

Abstract: A method is provided for operating a motor vehicle traveling on a roadway. The method includes, but is not limited to determining data of the roadway in the area, which includes determining a number n of lanes. If it is determined that n?2, it is determined whether a lane in which the vehicle is located with data of an optical camera of the motor vehicle. In addition, it is determined whether a second motor vehicle is traveling in the lane, in which the motor vehicle is located, in a direction of travel opposite a first direction of travel with a determination apparatus of the motor vehicle. If a second motor vehicle is determined, a warning message and/or automatic actuation is generated from an apparatus of the motor vehicle (e.g, a braking apparatus, a drive apparatus, or a steering apparatus).

Abstract: A permanent-magnet electrical machine is disclosed in which the rotor or stator have at least one movable iron segment. A magnetic field of the electric machine is weakened when the movable iron segment is moved a position away from the rotor or stator, respectively. When the movable iron segment is in a first position, such as in contact with the rotor or stator, the field strength is high. When the movable iron segment is in a second position in which the movable iron segment is displaced away from the rotor or stator, the field strength is low. The ability to weaken the field strength causes the constant-power, speed ratio to be increased and thereby increases the utility of the electric machine for applications in which a wide speed range is desired. The electric machine may be used as both a permanent-magnet motor and generator.

Abstract: A permanent-magnet electrical machine is disclosed in which the rotor has a fixed back iron and movable back iron segments. When the movable back iron segments are in a first position, such as in contact with the fixed back iron, the field strength is high. When the movable back iron segments are in a second position in which the movable back iron segments are displaced away from the fixed back iron, the field strength is low. The ability to weaken the field strength causes the constant-power, speed ratio to be increased and thereby increases the utility of the motor for applications in which a wide speed range is desired. The disclosure applies to both permanent-magnet motors and generators. In an alternative embodiment, the stator ring is provided with a fixed portion and at least one movable stator segment.

Abstract: A stator position adjustment method for a motor drive device that includes a motor case, a rotor shaft supported by the motor case in order to rotate a rotor inside the motor case, and a stator disposed at an outer circumference of the rotor concentrically with the rotor and having a configuration in which the stator is tightened and secured to the motor case by a tightening unit that tightens the stator along a rotor axis. The method includes the steps of setting a first tolerance range as a maximum tolerance range of a stator axis in which a first gap is formed between an outer circumference surface of the stator and an inner circumference surface of the motor case; measuring a position of the stator axis; and adjusting the position of the stator axis within the first tolerance range based on a measured position of the stator axis.

Abstract: A controller is provided for a permanent magnet field motor including two rotors concentrically provided around a rotating shaft and a phase changing device for changing an angle of relative displacement in a circumferential direction between two rotors to serve as a power source for driving driven wheels of an all-wheel drive vehicle having two main driving wheels and at least two driven wheels, the controller including a drive control portion to control driving of the motor according to a drive mode of the all-wheel drive vehicle; and a phase instruction portion to issue an instruction, when the drive mode of the all-wheel drive vehicle is a main-driving-wheel drive mode, to set the angle of relative displacement at an angle at which a magnetic flux generated at each of the two rotors is weakened, as compared with that generated at each of the two rotors in an all-wheel drive mode.

Abstract: A field-oriented control method for an electric drive comprising a plurality of electric motors, for implementing a tension mechanism, especially for load cable and/or gearing means, using measurements of a polyphase motor actual current. The measured values are transformed into a direct current component and a quadrature current component, based upon a magnetic rotor field or flux angle, in a rotor flux-based d,q coordinate system. The quadrature and direct current components from the actual current are subjected to a comparison with predetermined quadrature and direct current components of a current command value.

Abstract: A power unit which makes it possible to reduce power transmitted from a prime mover to a driven part via an electrical path, to thereby increase the efficiency of driving the driven part. A first rotating machine of the power unit inputs and outputs energy between a stator and first and second rotors thereof, via magnetic circuits formed by generation of a rotating magnetic field, and the rotating magnetic field, and the rotors rotate while maintaining a linear relation in which respective differences in rotational speed between the rotating magnetic field and the second rotor, and between the second and first rotors are equal. The rotors are mechanically connected to a prime mover and a transmission, respectively. A second rotating machine of the power unit is mechanically connected to a drive part without via the transmission, and electrically connected to the stator.

Abstract: Motion control using electromagnetic forces. The control of motion in unpowered apparatus and an apparatus driven by electric motors and/or other prime movers utilizes electromagnetic force/torque for control of motion. One objective is to extend the domain of electric motor speed control, traditionally characterized by electronic techniques, to small apparatus such as bubble vibration toys, paper dispensers, toothbrushes and other appliances.

Abstract: An electrical machine including at least one sensor, a transducer wheel at which the sensor axially picks up a signal, an end face of the sensor being adjacent to an annular face on one face end of the transducer wheel, a shaft, on which the transducer wheel is axially displaceably secured, a fixed bearing, and a loose bearing, in which bearings the shaft is supported, and a housing. At least one stop on the machine having at least one stop face that points in the direction of the fixed bearing and has at least one stop face on the transducer wheel, the stop faces being oriented toward one another and axially facing one another. Viewed in the direction of the transducer wheel, the stop faces are designed relative to one another such that the two diametrically opposed active surfaces of the sensor and of the transducer wheel barely do not touch.

Abstract: A stator position adjustment method and device relating to a motor driving device including a motor case, a rotor and a stator disposed on an outer periphery of the rotor concentrically with the rotor, includes adjusting a position of the stator relative to an axial center of the rotor, wherein: the position of the stator relative to the axial center of the rotor is adjusted in a non-inserted state, in which the stator is housed inside the motor case and the rotor is not inserted in the stator, using an adjustment tool, and the adjustment tool is positioned using a rotor shaft-support portion, that shaft-supports the rotor on the motor case as a reference.

Abstract: Motion control using electromagnetic forces. The control of motion in unpowered apparatus and an apparatus driven by electric motors and/or other prime movers utilizes electromagnetic force/torque for control of motion. One objective is to extend the domain of electric motor speed control, traditionally characterized by electronic techniques, to small apparatus such as bubble vibration toys, paper dispensers, toothbrushes and other appliances.

Abstract: An apparatus has (a) a first component having one or more electromagnetic elements and (b) a second component having one or more electromagnetic elements and movably coupled to the first component. The second component moves with respect to the first component in a cyclical manner. The one or more electromagnetic elements of the first component interacts with the one or more electromagnetic elements of the second component during each of one or more cycles of motion of the second component with respect to the first component such that, when a constant force profile is applied to move the second component with respect to the first component, the speed of motion increases and decreases one or more times during each cycle of motion due to different levels of electromagnetic interaction between the electromagnetic elements within each cycle of motion.

Abstract: A method for monitoring a fan comprises measuring power usage of the fan, determining a derivative of the measured fan power usage, tracking the derivative over time, and predicting impending fan failure based on the tracked fan power usage derivative.

Abstract: A dual-rotor electric motor (1), having an outer rotor (3) and an inner rotor (4), drives a first drive axle (5) and a second drive axle (6), while also provides inter-axle speed differential function. One of the drive axles is also a steering axle. Torque and rotation are transmitted between the outer rotor and the first drive axle through a clutch (19) and a first drive shaft (20), and between the inner rotor and the second drive axle through a second drive shaft (22). A first brake (24) brakes the rotation of the outer rotor, and a second brake (25) brakes the rotation of the inner rotor. A fluid pressure source, including a pump (51) and an accumulator (59), provides fluid pressure, through a plurality of fluid lines, for operating the clutch and brakes. Electromagnetic control valves (60, 61, 62) control the operation of the clutch and brakes.

Abstract: A dual-rotor electric motor (1), having an outer rotor (3) and an inner rotor (4), drives a first drive axle (5) and a second drive axle (6), while also provides inter-axle speed differential function. One of the drive axles is also a steering axle. Torque and rotation are transmitted between the outer rotor and the first drive axle through a clutch (19) and a first drive shaft (20), and between the inner rotor and the second drive axle through a second drive shaft (22). A first brake (24) brakes the rotation of the outer rotor, and a second brake (25) brakes the rotation of the inner rotor. A fluid pressure source, including a pump (51) and an accumulator (59), provides fluid pressure, through a plurality of fluid lines, for operating the clutch and brakes. Electromagnetic control valves (60, 61, 62) control the operation of the clutch and brakes.

Abstract: A device for controlling and regulating the relative speed between the scroll (4) and drum (2) of a centrifugal extractor, comprising a dc or ac electric motor (10), stator (10a) of which is made integral with drum (2) and rotor (10b) of which is made integral with a gear (7) which drives scroll (4) via appropriate means (7a, 8a, 14a; 7b, 8b, 14b) of connection, there being furthermore provided means (30a, 30b) for detecting the speeds of rotation of such rotor (10b) and stator (10a) and for converting them into a representative electric signal, and means (40, 50) for comparing such electric signals designed to emit a signal (D.sub.rs) capable of operating means (60; 1060) for supplying to rotor (10b) a current capable of compensating for any deviations of the parameters of the extractor from the programmed operating conditions.

Abstract: A direct current machine construction in which the rotor includes a permanent magnet with the stator including winding energizable from a direct current source. In a first embodiment first and second stationary slip rings are connected to an external direct current source. Coupled for rotation with the shaft are to first and second brush assemblies with brushes which are spring biased and protrude radially outwardly from the rotor shaft. The commutator for the windings is stationary relative to the housing and includes a plurality of commutator segments positioned intermediate the slip rings and in a cylindrical manner facing inwardly toward, and for contact with, the commutator brushes. The windings are on the stator with the winding leads being accessible externally of the stator for enabling switching devices to be utilized for changing of the number of turns of the stator windings for thereby varying the motor characteristics, as needed.