Acceleration control for an electric vehicle
First Claim
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1. An electric vehicle, comprising:
- an electric motor configured to provide traction;
a control system configured to receive a signal indicative of a requested torque and determine (i) a first acceleration, the first acceleration being indicative of an acceleration of the electric motor that provides the requested torque, and (ii) a second acceleration, the second acceleration being a threshold acceleration of the electric motor; and
an inverter operatively coupled to the control system and the electric motor, the inverter being configured to control the electric motor to provide a lower value of (a) first acceleration and (b) the second acceleration.
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Abstract
An electric vehicle includes an electric motor configured to provide traction and a control system. The control system may be configured to receive a signal indicative of a requested torque and determine an acceleration limit based on the requested torque. The electric vehicle may also include an inverter operatively coupled to the control system and the electric motor. The inverter may be configured to control the electric motor based at least on (a) a signal indicative of the requested torque, and (b) a signal indicative of the acceleration limit.
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Citations
19 Claims
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1. An electric vehicle, comprising:
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an electric motor configured to provide traction; a control system configured to receive a signal indicative of a requested torque and determine (i) a first acceleration, the first acceleration being indicative of an acceleration of the electric motor that provides the requested torque, and (ii) a second acceleration, the second acceleration being a threshold acceleration of the electric motor; and an inverter operatively coupled to the control system and the electric motor, the inverter being configured to control the electric motor to provide a lower value of (a) first acceleration and (b) the second acceleration. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An electric vehicle, comprising:
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a powertrain powered by an electric motor; a control system configured to (a) receive a signal indicative of a requested torque, (b) determine a requested acceleration based on the requested torque, (c) determine an acceleration limit, and (d) control the electric motor to provide a lower value of the requested acceleration and the acceleration limit. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A method of operating an electric motor of an electric vehicle, comprising:
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receiving a signal indicative of a requested torque; determining a requested acceleration based at least on the requested torque; determining an acceleration limit, the acceleration limit being indicative of a maximum desired acceleration of the electric motor; and controlling the electric motor to provide a lower of the requested acceleration and the acceleration limit. - View Dependent Claims (16, 17, 18, 19)
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Specification