摘要:
A traction control system for a vehicle (310) having a number of wheels (312,314,316,318) each independently powered by a motor, comprises sensors for sensing the acceleration of the rotation of each wheel and a control unit to adjust the torque applied to each wheel (312,314,316,318) if the sensed acceleration is indicative of a skid. A control unit may be provided for each wheel (312,314,316,318) and the control units may be networked to exchange wheel acceleration data, for example using a controller area network (CAN). The control units may be operable to provide continuous torque adjustment for the wheels (312,314,316,318). Each control unit may be able to perform traction control independently of other control units in the system according to predetermined rules.
摘要:
A wheel motor is arranged so that the wheel is supported directly on the bearing assembly 223 which connects to the inner part of the stator region 223, the vehicle weight not being transmitted via the rotor 240 to the bearing. The rotor mounts on the wheel studs and is located between the bearing and the wheel, the wheel contacting the centre of the rotor 225. The stator is secured to the vehicle by means of the external portion of the region 223. The description additionally discloses coil mounting, magnet mounting, fluid cooling, sealing, rotor position sensing, noise reduction, control electronics mounting and coil layout, control circuitry, traction and suspension control and braking control.
摘要:
Es wird ein Flurförderzeug, insbesondere Hybrid-Fahrersitz-Zugmaschine oder Elektro-Fahrersitz-Zugmaschine, wobei wenigstens in einem Bremsmodus des Flurförderzeugs ein als Antriebsmotor zum Antreiben wenigstens eines Laufrades ausgebildeter Elektromotor als Generator zum Erzeugen einer elektrischen Bremskraft ausgebildet ist, wobei wenigstens eine Anti-Blockier-Einheit zum Vermeiden oder Reduzieren eines Blockierens wenigstens eines Laufrades während der Fahrt des Flurförderzeugs vorgesehen ist, vorgeschlagen, so dass eine wirkungsvolle Anti-Blockier-Funktion realisiert wird, die insbesondere vergleichsweise konstruktiv einfach und kostengünstig ist. Dies wird erfindungsgemäß dadurch erreicht, dass wenigstens ein eine maximale Geschwindigkeit aufweisender, oberer Geschwindigkeitsbereich des Laufrades und/oder des Flurförderzeugs sowie ein den Stillstand aufweisender, unterer Geschwindigkeitsbereich des Laufrades und/oder des Flurförderzeugs vorgesehen sind, wobei die Anti-Blockier-Einheit wenigstens eine elektrische Kontrolleinheit zum Reduzieren der maximal realisierbaren Bremskraft auf eine realisierte Bremskraft aufweist, so dass im unteren Geschwindigkeitsbereich des Laufrades und/oder des Flurförderzeugs die realisierte Bremskraft kleiner ist als die maximal realisierbare Bremskraft.
摘要:
Die Erfindung betrifft ein Verfahren zum Aufladen eines Akkumulators (10) eines Elektro- oder Hybridfahrzeugs (4) mit Hilfe eines Energierückgewinnungssystems (2), wobei ein Teil der mit dem Energierückgewinnungssystems (2) generierten elektrischen Energie in Nutzwärme umgewandelt wird, um damit die Temperatur im Innenraum (18) des Elektro- bzw. Hybridfahrzeugs (4) zu regulieren.
摘要:
Es wird ein Verfahren und eine Steuerung zum Bereitstellen elektrischer Energie aus einer angetriebene Drehstrom-Synchronmaschine (1) mit einem mehrphasigen Umrichter (2) angegeben, der obere Schalter (S1..S3) und untere Schalter (S4..S6) und wenigstens einen in oder an einem Zwischenkreis des Umrichters (2) angeordneten Zwischenkreis-Kondensator (C) umfasst. Durch einen aktiven Kurzschluss, bei dem alle oberen Schalter (S1..S3) oder alle unteren Schalter (S4..S6) geschlossen werden, wird bei einem abgeschleppten Kraftfahrzeug oder bei einem Fahrzeug, das fremd (hybrid oder am Rollenprüfstand) angetrieben wird oder ausrollt und/oder über keine einsatzfähige Zwischenkreisspannungsversorgung verfügt, ein sicherer Zustand herbeigeführt, bei dem hohe Spannungen (UC) im Zwischenkreis verhindert und Bremsmomente (M) reduziert werden.
摘要:
A drive system is provided for a utility vehicle and includes an alternating-current (AC) motor for providing a drive torque. An AC motor controller receives a battery voltage signal, throttle pedal position signal, brake pedal position signal, key switch signal, forward/neutral/reverse (FNR) signal, and run/tow signal indicative of the utility vehicle being configured to be driven and being configured to be towed. The AC motor controller generates an AC drive signal for the AC motor, wherein the AC drive signal is based on the battery voltage signal, throttle pedal position signal, brake pedal position signal, key switch signal, FNR signal, and run/tow signal.
摘要:
An electric vehicle is controlled to conform its operation to that of a conventional internal-combustion-engine powered vehicle. In some embodiments, the charging of the batteries by the auxiliary source of electricity and from dynamic braking is ramped in magnitude when the batteries lie in a state of charge between partial charge and full charge, with the magnitude of the charging being related to the relative state of charge of the battery. The deficiency between traction motor demand and the energy available from the auxiliary electrical source is provided from the batteries in an amount which depends upon the state of the batteries, so that the full amount of the deficiency is provided when the batteries are near full charge, and little or no energy is provided by the batteries when they are near a discharged condition. At charge states of the batteries between near-full-charge and near-full-discharge, the batteries supply an amount of energy which depends monotonically upon the charge state. Charging of the batteries from the auxiliary source is reduced during dynamic braking when the batteries are near full charge. Control of the amount of energy returned during dynamic braking may be performed by control of the transducing efficiency of the traction motor operated as a generator.
摘要:
An electric vehicle is controlled to conform its operation to that of a conventional internal-combustion-engine powered vehicle. In some embodiments, the charging of the batteries by the auxiliary source of electricity and from dynamic braking is ramped in magnitude when the batteries lie in a state of charge between partial charge and full charge, with the magnitude of the charging being related to the relative state of charge of the battery. The deficiency between traction motor demand and the energy available from the auxiliary electrical source is provided from the batteries in an amount which depends upon the state of the batteries, so that the full amount of the deficiency is provided when the batteries are near full charge, and little or no energy is provided by the batteries when they are near a discharged condition. At charge states of the batteries between near-full-charge and near-full-discharge, the batteries supply an amount of energy which depends monotonically upon the charge state. Charging of the batteries from the auxiliary source is reduced during dynamic braking when the batteries are near full charge. Control of the amount of energy returned during dynamic braking may be performed by control of the transducing efficiency of the traction motor operated as a generator.