A vehicle system (10) is provided. The vehicle system comprises an electrical DC motor (11) driving a load (12), such as a hydraulic pump, and a control system (100) for controlling the speed of the electrical motor (11). The control system (100) comprises a system (20) for monitoring and controlling the speed of the electric DC motor in view of a reference commutation signal (SR), wherein the electrical DC motor is associated with a drive current signal (ID), and wherein the drive current signal (ID) comprises information relating to the commutation signal of the electrical DC motor. The system (20) comprises a speed estimation unit (23) for estimating a commutation signal (SE) from the drive current signal (ID), said commutation signal (SE) corresponding to an estimated motor speed; a filter unit (25) configured to apply a first filter on the drive current signal (ID), said first filter being selected based on the estimated commutation signal (SE), thereby resulting in a filtered drive current signal, and a speed detector unit (26) for detecting the actual commutation signal (SM) from the filtered drive current signal. If the detection of the commutation signal (SM) is unsuccessful the speed estimation unit (23) is based upon the receipt of a signal (SM-NO) from the speed detector unit (26) configured to transmit an estimated commutation signal (SE) to a control unit (28), wherein the control unit is configured to provide a control signal comprising information of a comparison between the reference commutation signal (SR) and the estimated commutation signal (SE) and indicating a required updated drive signal (ID).
A VEHICLE SYSTEM, AND A METHOD FOR SUCH VEHICLE SYSTEM
2016-07-21
Patent
Elektronische Ressource
Englisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |
Vehicle System, Vehicle And Method For Operating Such A Vehicle System
Europäisches Patentamt | 2020
|Vehicle system, vehicle and method for operating such a vehicle system
Europäisches Patentamt | 2023
|MOTOR VEHICLE, SYSTEM AND METHOD FOR OPERATING SUCH A MOTOR VEHICLE AND SUCH A SYSTEM
Europäisches Patentamt | 2018
|Motor vehicle, system and method for operating such a motor vehicle and such a system
Europäisches Patentamt | 2020
|Vehicle electrical system and method for operating such vehicle electrical system
Europäisches Patentamt | 2021
|