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An electric vehicle control method and device
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An electric vehicle control and electric vehicle technology, applied in the field of electric vehicles, can solve the problems of increasing the cost of additional gradient sensors and increasing the calculation of large gradients
Active Publication Date: 2019-03-01
广东高标智能科技股份有限公司
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[0005] In view of this, the embodiments of the present invention provide an electric vehicle control method and device to solve the problem in the prior art that the cost of an additional slope sensor or a large number of slope recognition operations need to be added
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Embodiment 1
[0057] see figure 1 , is a schematicblock diagram of an electric vehicle control method provided in Embodiment 1 of the present invention, and the method may include the following steps:
[0058] Step S101, acquiring the current speed and preset target speed of the target electric vehicle.
[0059] Generally, the target speed can be set to zero, that is, the position of the target electric vehicle remains unchanged; the target speed can also be set according to actual conditions, which is not specifically limited in this embodiment.
[0060] It is easy to understand that if the target speed is set as a positive number, it indicates that the target electric vehicle needs to move forward, and if the target speed is set as a negative number, it indicates that the target electric vehicle needs to move backward.
[0061] Step S102, when the preset anti-slope trigger condition is met, the anti-slope torque is obtained through the PID control algorithm according to the current spee...
Embodiment 2
[0100] see figure 2 , is a schematicblock diagram of an electric vehicle control device provided in Embodiment 2 of the present invention. For convenience of description, only parts related to the embodiment of the present invention are shown.
[0101] The electric vehicle control device may be a software unit, a hardware unit or a combination of software and hardware built in the electric vehicle, or it may be integrated into the electric vehicle as an independent pendant.
[0102] The electric vehicle control device may include:
[0103] A speed acquisition module 201, configured to acquire the current speed and preset target speed of the target electric vehicle;
[0104] The PID control module 202 is used to obtain the anti-slope torque through the PID control algorithm according to the current speed and the target speed when the preset anti-slope trigger condition is met;
[0105] A limiter module 203, configured to adjust the anti-slope torque according to a preset li...
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Abstract
The invention belongs to the field of electric cars, and provides an electric car control method and device. The method comprises the steps that a current speed and a preset target speed of a target electric car are acquired; when the preset slope sliding prevention triggering conditions are met, the slope sliding prevention torque is obtained through a PID control algorithm according to the current speed and the target speed; the slope sliding prevention torque is regulated according to preset limiting rules; a motor of the target electric car is controlled to output the slope sliding torque obtained after regulation, so that the target electric car reaches the target speed. According to the method and device, the car speed can quickly and accurately reach the preset target speed without increasing the additional cost of a gradient sensor or increasing a large amount of gradient recognition operation.
Description
technical field [0001] The invention belongs to the technical field of electric vehicles, and in particular relates to an electric vehicle control method and device. Background technique [0002] In the field of electric vehicle technology, how to effectively prevent vehicles from sliding is a key and common technical problem. Vehicle slippage refers to the movement of the vehicle that is contrary to the driver's driving intention due to road conditions and other reasons. For example, when the vehicle is driving up an inclined slope, the vehicle may slide down. Vehicle slippage is extremely dangerous and can easily cause traffic accidents. [0003] In the prior art, there are mainly three control methods for preventing slopes of electric vehicles: the first method is to control the idle speed of the motor by identifying the slope to prevent slopes. The second method is to estimate the slope in real time through the state observer, calculate the torque required for standing...
Claims
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Application Information
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