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Control method of load self-adaptive accelerator system

A control method and self-adaptive technology, which can be applied to control drives, control devices, electric vehicles, etc., and can solve problems such as the impact of driving experience

Active Publication Date: 2017-01-11
杭州衡源汽车科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing technology, there is a unique correspondence between the throttle opening and the output power of the car engine. Therefore, once the load of the car changes and the stepping on the accelerator pedal is the same, the output power of the car engine is constant, but the final response of the car has changed. Although this has been the case for a long time There are always problems, but for the driver, the driving experience is still affected to a certain extent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A load-adaptive throttle system control method, suitable for electric vehicles or hybrid vehicles, establishes a throttle opening comparison table and / or throttle opening comparison formula for the total vehicle weight, and obtains the current total vehicle weight,

[0038] Query the throttle opening comparison table or the throttle opening comparison formula according to the current total vehicle weight to obtain the current response correction value, and set the throttle response according to the actual throttle opening and response correction value.

[0039] It includes the following steps:

[0040] Step 1: Read the standard configuration parameters and the preset throttle opening car electric output power comparison formula to obtain the car's calibrated weight value;

[0041] Step 2: Obtain the current real-time total car weight;

[0042] Step 3: If the current real-time total car weight is less than or equal to the calibrated weight value of the car, go to step 4, otherwise...

Embodiment 2

[0075] This embodiment is basically the same as embodiment 1. The car in embodiment 2 is equipped with an L-shaped air tube under the accelerator pedal, and the L-shaped air tube is equipped with a piston rod. The upper end of the air tube faces the accelerator pedal, so The upper end of the piston rod is fixedly connected to the lower surface of the accelerator pedal, and the lower end of the L-shaped air pipe is provided with two vent holes, and the sum of the apertures of the two vent holes is smaller than the diameter of the upper end of the air pipe. The ventilation hole is equipped with a safety redundant solenoid valve, which is connected to the automobile ECU. In step 1, the pedaling limit speed set has an adjustment range, and the pedaling limit speed is within the adjustment range. The opening degree of the safety redundant solenoid valve is proportionally related, and the safety redundant solenoid valve is transformed into a corresponding opening degree according to t...

Embodiment 3

[0078] This embodiment is basically the same as embodiment 1, except that: the power distribution ratio of the two tires of the front wheel of the car is a standard configuration parameter, and the current real-time total weight and center of gravity of the car are calculated by the weight meter that comes with the wheels. Position, extract the offset vector between the real-time center of gravity position and the preset center of gravity position, if the offset vector is maintained within a predetermined time, the current offset vector is obtained as the calculated value, and the horizontal axis of the car is the X axis and the vertical axis is the Y axis The current offset vector is decomposed, and the tire power distribution ratio of the two front wheels is corrected in proportion to the decomposition value of the current X-axis offset vector. 94% of the tire power distribution ratio of all wheels is the assigned fixed value, and 6% of the tire power distribution ratio of all...

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Abstract

The invention relates to a control method of a load self-adaptive accelerator system. The defects in the prior art are overcome. According to the technical scheme, the control method is suitable for an electric vehicle or a hybrid vehicle, and is characterized in that an accelerator opening degree contrast table and / or an accelerator opening degree contrast formula is established for the total weight of a vehicle, and the current total weight of the vehicle is obtained, the current response modification value is obtained by inquiring the accelerator opening degree contrast table and / or the accelerator opening degree contrast formula according to the current total weight of the vehicle, and accelerator response is set according to the actual opening degree of an accelerator and the response modification value. Current offset vectors are decomposed with the vehicle transverse axis as the X axis and the vehicle longitudinal axis as the Y axis, the tire power distribution ratio of each tire is modified according to the decomposition value of the current offset vectors, each tire of the vehicle outputs power in the form of standard electricity according to the power distribution ratio, the power is multiplied by the response modification value to obtain a product, the product as the final vehicle electricity output power is output, and the second step is executed again.

Description

Technical field [0001] The invention relates to a control method of a throttle system, in particular to a control method of a load adaptive throttle system. Background technique [0002] Generally, the throttle opening of the automobile throttle control achieves the purpose of controlling the speed of the vehicle, but now electric vehicles or hybrid vehicles are beginning to emerge in the market as emerging vehicles, and traditional automobile accelerator control methods are no longer applicable, electric vehicles or hybrid vehicles Although the throttle of the car is called the throttle, it mainly controls the output power of the motor to achieve the purpose of controlling the output. Generally, it is to detect the throttle opening and convert it into an output value, and then issue a drive command to make the motor output the corresponding power. [0003] Chinese patent documents once disclosed an inductive accelerator sensor for electric vehicles (its application number is: CN20...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20
CPCB60L15/20B60L2240/26B60L2240/42B60L2250/26Y02T10/72
Inventor 于宙王祖光陈雷
Owner 杭州衡源汽车科技有限公司
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