EP1131223A1 - Amelioration de dispositifs de commande a vitesse variable - Google Patents

Amelioration de dispositifs de commande a vitesse variable

Info

Publication number
EP1131223A1
EP1131223A1 EP99956164A EP99956164A EP1131223A1 EP 1131223 A1 EP1131223 A1 EP 1131223A1 EP 99956164 A EP99956164 A EP 99956164A EP 99956164 A EP99956164 A EP 99956164A EP 1131223 A1 EP1131223 A1 EP 1131223A1
Authority
EP
European Patent Office
Prior art keywords
motor
control
operational parameters
gear
speed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP99956164A
Other languages
German (de)
English (en)
Inventor
Robert William Lindsay
David Lewis-Boyle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lintec International Ltd
Original Assignee
Lintec International Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lintec International Ltd filed Critical Lintec International Ltd
Publication of EP1131223A1 publication Critical patent/EP1131223A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

Definitions

  • This invention is concerned with means for providing a variable speed from a DC electric motor. Whilst the invention is concerned particularly with means for controlling the speed of a wheeled vehicle it is to be understood that the device can equally be used for speed and motion control purposes in relation to wheeled and tracked vehicles, marine craft, aviation applications and mechanical handling applications. According to the present invention there is provided a system for creating a variable speed control for the output drive of a DC electric motor wherein individual sets of data control points on a torque to RPM speed profile are predefined and set as operational parameters into control equipment for driving the motor, such that the motor can only be driven within the confines of the operational envelope of any particular set, and switch means is provided for switching between the separate sets of operational parameters as desired.
  • This system can be used in particular to simulate the effect of gear changing in a conventional motor vehicle. It is therefore particularly suited for installation into so called “go-karts" which are provided for recreational and competitive track driving. As the user gains speed he can switch from one set of operational parameters to a new set and thus simulate the effect of changing from a lower to a higher gear. It is greatly preferred that the system should incorporate a variable position acceleration control device which is able to create a signal related to the position of the control device to determine the electrical current level supplied to the motor. This control device can then be used as a conventional accelerator when the system is incorporated into a vehicle. Ideally means will be provided to prevent switching between sets of operational parameters whilst the acceleration control device is creating an output signal .
  • the system can be provided with a reversion set of data control points which define operational parameters for reverse drive of the motor. This enables a vehicle, in which the system is incorporated, to be driven in reverse.
  • control means will be provided to prevent operation of the motor under the operational parameters of said reversion set until the motor has come to a standstill.
  • the system may also incorporate a braking device which, when operated will send control signals to the motor drive to cause assisted regenerative braking of the motor.
  • a braking device which, when operated will send control signals to the motor drive to cause assisted regenerative braking of the motor.
  • such a system would be arranged so that (when an acceleration control device is provided) the signal sent from the braking device will override any control signals delivered by said acceleration control device.
  • the sets of data control points will be programmed into an EPROM device.
  • the EPROM device could be replaced by another in which alternative sets of operational parameters can be defined. This enables the overall control system to be modified, for example to allow for the different circumstances present in a track around which a vehicle might be driven. The system can then be adapted for a variety of tracks, as required.
  • the system will include a display panel to indicate the current status of control devices within the system. It is also possible to provide a remote-control linkage apparatus connected to modify the status of the control device within the system upon receipt of signals from a remote-control operating device.
  • a preferred embodiment of the invention will now be described in more detail with reference to the accompanying drawing which is a graph illustrating the torque/speed profile of a DC electric motor.
  • the drawing illustrates a typical torque profile of a brushless DC motor illustrating how the torque capability decreases with increase of speed of the motor.
  • One of the major objectives of this invention is to provide a means of simulating gear changes when driving a vehicle powered by such an electric motor. This is achieved by defining individual sets of data control points, wherein each set effectively corresponds to a particular gear setting. The envelope defined by the data control points for four "gear settings" are indicated by the reference numerals I, II, III, IIII.
  • the control equipment for driving the motor can then only operate within the particular set which is selected (by suitable programming of an electronic control unit) . When the user senses that he has reached maximum speed under a particular set he can change to a new set and thus effectively move up a gear. The reverse will or course apply if there is a desire to decelerate. As the driver arranges to increase the speed of the car to a maximum he will move up through each of the four gears until the maximum available speed from the motor is achieved.
  • Changing gear from one gear to the next can be achieved by pressing switches on the steering wheel of the vehicle, one being provided for upwards changing and the other for downwards changing.
  • a separate switch will be provided to enable the system to operate in such a manner that the motor is reversed (once it has achieved stationary condition) , thus providing a reverse "gear" for the vehicle.
  • the system can be operated so as to simulate an automatic gear box. This can be achieved by placing zero torque blips at specific points such that the drive reduces no torque for a fraction of a second. This gives the feeling of a gear change.

Abstract

Sur une courbe type de couple de moteur c.c. sans balais, on porte des groupes séparés de points de commande de données indiquant la décroissance du couple en fonction de la vitesse. Chaque groupe correspond en fait à un point simulé de passage de vitesse lors de la conduite d'un véhicule utilisant un tel moteur électrique. L'enveloppe définie par lesdits points pour quatre rapports est indiquée par les chiffres de référence 'I, II, III et IIII'; le dis positif de commande du moteur ne peut alors fonctionner qu'à l'intérieur du groupe donné ayant été sélectionné (par programmation adéquate d'une unité électronique de commande). Lorsque le conducteur perçoit avoir atteint la vitesse maximale dans un rapport donné, il peut sélectionner un nouveau rapport et passer dans une vitesse plus élevée. L'inverse se produit s'il désire décélérer et changer de vitesse. Lorsqu'il désire atteindre la vitesse maximale, il monte successivement les quatre rapports jusqu'à ce que le moteur tourne à son régime maximal.
EP99956164A 1998-11-16 1999-11-16 Amelioration de dispositifs de commande a vitesse variable Withdrawn EP1131223A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9825029 1998-11-16
GB9825029A GB2343759B (en) 1998-11-16 1998-11-16 Improvements relating to variable speed control devices
PCT/GB1999/003810 WO2000029248A1 (fr) 1998-11-16 1999-11-16 Amelioration de dispositifs de commande a vitesse variable

Publications (1)

Publication Number Publication Date
EP1131223A1 true EP1131223A1 (fr) 2001-09-12

Family

ID=10842480

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99956164A Withdrawn EP1131223A1 (fr) 1998-11-16 1999-11-16 Amelioration de dispositifs de commande a vitesse variable

Country Status (5)

Country Link
EP (1) EP1131223A1 (fr)
AU (1) AU1281600A (fr)
CA (1) CA2351561A1 (fr)
GB (1) GB2343759B (fr)
WO (1) WO2000029248A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2479707B (en) * 2010-02-19 2012-10-24 Lotus Car A land vehicle
CN107871032A (zh) * 2016-09-27 2018-04-03 I.E.T.股份公司 具有机械式变速箱的性能模拟器的机动车辆

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2512197B2 (ja) * 1990-04-18 1996-07-03 株式会社日立製作所 電気車制御装置及びインバ―タ制御装置
JP3450078B2 (ja) * 1995-01-30 2003-09-22 セイコーエプソン株式会社 電気自動車のパワーアシスト装置
JPH0937407A (ja) * 1995-07-18 1997-02-07 Toyota Motor Corp 回生制動制御装置
JPH10248113A (ja) * 1997-03-05 1998-09-14 Meidensha Corp 自動変速機付電気自動車の一充電走行距離改善方法
DE29714639U1 (de) * 1997-08-16 1997-10-09 Reich Werner Gerät zur drahtlosen Fernabschaltung von Go-Karts sowie Signalübermittlung aller Art mittels Funk

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0029248A1 *

Also Published As

Publication number Publication date
CA2351561A1 (fr) 2000-05-25
WO2000029248A1 (fr) 2000-05-25
GB9825029D0 (en) 1999-01-13
AU1281600A (en) 2000-06-05
GB2343759A (en) 2000-05-17
GB2343759B (en) 2003-03-19

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