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Electric vehicle

A technology of electric vehicles and electric motors, applied in electric vehicles, electric power devices, motors, etc., can solve problems such as driving feeling and feeling

Pending Publication Date: 2022-02-18
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in the above-mentioned technology, the timing of the torque fluctuation control simulating the shift operation cannot be determined autonomously by the driver's own operation.
In particular, for a driver who is used to driving an MT vehicle, a shifting operation that does not simulate a manual shifting operation performed by the driver himself may cause a violation of the driving feeling of a driver who pursues the pleasure of operating an MT. sense

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0045] 1-1. Composition of electric vehicles

[0046] figure 1 It is a figure which schematically shows the structure of the powertrain of the electric vehicle 10 of this embodiment. like figure 1 As shown, the electric vehicle 10 includes an electric motor 2 as a power source. The electric motor 2 is, for example, a brushless DC (Direct Current) motor or a three-phase AC synchronous motor. The electric motor 2 is provided with a rotational speed sensor 40 for detecting the rotational speed of the electric motor 2 . An output shaft 3 of the electric motor 2 is connected to one end of a transmission shaft 5 via a gear mechanism 4 . The other end of the propeller shaft 5 is connected to a drive shaft 7 at the front of the vehicle via a differential gear 6 .

[0047] The electric vehicle 10 includes driving wheels 8 as front wheels and driven wheels 12 as rear wheels. The driving wheels 8 are respectively arranged on two ends of the driving shaft 7 . Wheel speed sensors 30...

Embodiment approach 2

[0120] 2-1. Configuration of the electric vehicle according to Embodiment 2

[0121] The configuration of the electric vehicle according to Embodiment 2 and figure 1 The electric vehicle 10 of Embodiment 1 shown is the same. Therefore, a detailed description of the electric vehicle 10 according to Embodiment 2 will be omitted.

[0122] 2-2. Features of the electric vehicle according to Embodiment 2

[0123] In general, the pedal reaction force characteristic of the clutch pedal in an actual MT vehicle has hysteresis during a depression operation and a return operation due to mechanical friction accompanying clutch operation and structural characteristics of a hydraulic mechanism. The electric vehicle 10 according to Embodiment 2 is characterized in that it exhibits control with hysteresis pedal reaction force characteristics.

[0124] Figure 11 is a graph showing an example of pedal reaction force characteristics with hysteresis. As shown in the figure, the pedal reactio...

Embodiment approach 3

[0134] 3-1. Configuration of Electric Vehicle of Embodiment 3

[0135] The configuration and figure 1 The electric vehicle 10 of Embodiment 1 shown is the same. Therefore, a detailed description of the electric vehicle 10 according to Embodiment 3 will be omitted.

[0136] 3-2. Features of the electric vehicle according to Embodiment 3

[0137] In an actual MT vehicle, unique vibration may be generated in a half-engagement region where the clutch is in a half-engagement state when the clutch pedal is returned. Therefore, the electric vehicle 10 according to Embodiment 3 executes vibration addition control for adding vibration to the dummy clutch pedal 28 using the pedal reaction force adding device 44 in the half-engagement region during the return operation of the virtual clutch.

[0138] Figure 13 It is a figure for demonstrating the vibration addition control of Embodiment 3. As shown in the figure, in the electric vehicle 10 according to Embodiment 3, a predetermined...

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Abstract

The present disclosure provides an electric vehicle capable of obtaining a driving feeling as if a driver is operating a clutch pedal of an MT vehicle. The control device for an electric vehicle uses an MT vehicle model to control the torque of an electric motor on the basis of the amount of operation of an acceleration pedal, the amount of operation of a simulated clutch pedal, and the shift position of a simulated shift device. In addition, the electric vehicle is provided with a pedal reaction force adding device for generating a pedal reaction force for the operation of the simulated clutch pedal by the operation of the reaction force actuator. The control device stores pedal reaction force characteristics in which pedal reaction force characteristics corresponding to the operation of the clutch pedal are simulated. In accordance with the stored pedal reaction force characteristics, the control device controls the pedal reaction force output by the pedal reaction force adding device on the basis of the amount of operation of the simulated clutch pedal.

Description

technical field [0001] The present disclosure relates to an electric vehicle using an electric motor as a power unit for traveling. Background technique [0002] An electric motor used as a power unit for running in an electric vehicle (EV: Electric Vehicle) has a torque characteristic that is significantly different from an internal combustion engine used as a power unit for running in a conventional vehicle. Due to the difference in the torque characteristics of the power plant, a conventional internal combustion engine vehicle must have a transmission, but generally speaking, an EV does not have a transmission. Of course, EVs do not have a manual transmission (MT: Manual Transmission) in which a gear ratio is switched by a driver's manual operation. Therefore, there is a large difference in driving feeling between driving a conventional vehicle with MT (hereinafter referred to as MT vehicle) and driving an EV. [0003] On the other hand, electric motors can relatively e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20B60L15/28
CPCB60L15/2054B60L15/28B60L2260/20B60L2260/44B60K23/02G05B17/02B60L50/60B60L2240/423B60L2240/463B60L2240/48B60L2240/80B60L2250/26Y02T10/64Y02T10/70Y02T10/72B60L15/20B60K1/00B60K26/021B60K20/02B60K2026/023
Inventor 勇阳一郎伊藤良雄天野浩之今村达也西峰明子江渊弘章小寺广明
Owner TOYOTA JIDOSHA KK