Electric Vehicle Control Device, Control Method, and Control System
AssigneeHitachi Astemo, Ltd.
InventorsSatoshi KANEKO, Keisuke SUZUKI
Life of this patent
Estimating the term…
Abstract
A control device, a control method, and a control system for an electric vehicle are configured to use both of one-pedal feedback control based on an acceleration and one-pedal feedback control based on a speed, to thereby decelerate a vehicle to stop.
Claims12
A control device for an electric vehicle, the electric vehicle comprising an electric motor configured to apply a regenerative braking force to a wheel of a vehicle,
- wherein the control device is configured to:
- acquire a speed of the vehicle;
- obtain a first command for causing an acceleration of the vehicle to follow a target acceleration obtained based on operation amount information on a release of an accelerator pedal of the vehicle acquired from an accelerator pedal sensor configured to detect a physical quantity relating to a stroke of the accelerator pedal;
- obtain a second command for causing the speed of the vehicle to follow a target speed when a value of the speed of the vehicle lower than a predetermined speed is input to the control device;
- and
- output, to the electric motor, a torque command obtained from the first command and the second command.
A control method for an electric vehicle, the electric vehicle comprising an electric motor configured to apply a regenerative braking force to a wheel of a vehicle,
- the control method comprising:
- acquiring a speed of the vehicle;
- obtaining an acceleration of the vehicle based on the acquired speed of the vehicle;
- obtaining a first command for causing the acceleration of the vehicle to follow a target acceleration obtained based on operation amount information on a release of an accelerator pedal of the vehicle acquired from an accelerator pedal sensor configured to detect a physical quantity relating to a stroke of the accelerator pedal;
- obtaining a second command for causing the speed of the vehicle to follow a target speed when a value of the speed of the vehicle lower than a predetermined speed is input to the control device, and
- outputting, to the electric motor, a torque command obtained from the first command and the second command.
A control system for an electric vehicle, the control system comprising:
- an electric motor configured to apply a regenerative braking force to a wheel of a vehicle;
- an accelerator pedal sensor configured to detect a physical quantity relating to a stroke of an accelerator pedal of the vehicle;
- and
- a control unit configured to control the electric motor,
- wherein the control unit is configured to:
- acquire a speed of the vehicle;
- obtain an acceleration of the vehicle based on the acquired speed of the vehicle;
- obtain a first command for causing the acceleration of the vehicle to follow a target acceleration obtained based on a signal relating to a release of the accelerator pedal acquired from the accelerator pedal sensor;
- obtain a second command for causing the speed of the vehicle to follow a target speed when a value of the speed of the vehicle lower than a predetermined speed is input;
- and
- output, to the electric motor, a torque command obtained from the first command and the second command.
Dependencies are inferred from the claim text.