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Calculating method and device of virtual accelerator and controller

A calculation method and throttle technology, applied in the direction of program control and electrical program control in sequence/logic controllers, can solve problems such as complex system control, low calculation efficiency, and multiple code spaces, so as to save code space and simplify algorithms method, flexible effect

Active Publication Date: 2018-09-07
GEELY AUTOMOBILE INST NINGBO CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For new energy vehicles, such as hybrid electric vehicles (HEV), pure electric vehicles (BEV), fuel cell electric vehicles (FCEV), other new energy (such as super capacitors, flywheels and other high-efficiency energy storage) vehicles, etc., due to their more Various driving modes complicate system control
For the functions that need to use the concept of virtual throttle, the traditional algorithm becomes cumbersome, the calculation efficiency is low, and it takes up more code space

Method used

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  • Calculating method and device of virtual accelerator and controller
  • Calculating method and device of virtual accelerator and controller
  • Calculating method and device of virtual accelerator and controller

Examples

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Embodiment 1

[0034] The embodiment of the present invention provides a calculation method of a virtual throttle, which integrates a closed-loop control method, and realizes simulation calculation of a virtual throttle by using torque as a closed-loop target. The above calculation method can be realized based on software tools such as MATLAB / Simulink. see figure 1 The flow chart of the calculation method of the shown virtual throttle, the method includes the following steps:

[0035] Step S102, perform torque arbitration, and determine the wheel end torque value after vehicle arbitration.

[0036] Among them, for the intelligent control functions involving the use of virtual throttle, such as ACC adaptive cruise function, APA automatic parking function, etc., torque arbitration is performed on the relevant intelligent control functions, mainly including the intervention torque of the relevant intelligent control functions in the system wheel. Arbitration of response priority among termina...

Embodiment 2

[0047] see figure 2 The schematic diagram of the calculation method of the virtual throttle is shown, which shows each process step in the above-mentioned embodiment.

[0048] Wherein, the steps of carrying out the wheel end torque arbitration of related functions include:

[0049] (1) Determine the control function that needs to use the virtual throttle. exist figure 2 Several control functions that require the use of a virtual throttle are shown in , including functions such as adaptive cruise (ACC), automatic park assist (APA), creep, and fast deceleration. see image 3 The schematic diagram of the principle of torque arbitration of related functions is shown, which shows the process of arbitration between functions. image 3 The above is just an example of implementation, and it can also be expanded or tailored according to the requirements of specific projects.

[0050] (2) Perform torque arbitration according to the response priority of the intervention torque of ...

Embodiment 3

[0064] An embodiment of the present invention provides a computing device for a virtual throttle, see Figure 9 The structural block diagram of the calculation device of the shown virtual throttle, the device includes:

[0065] The wheel-end torque determination module 910 is used for torque arbitration, and determines the wheel-end torque value after vehicle arbitration;

[0066] The reverse base value determination module 920 is used to determine the reverse base value of the virtual throttle according to the wheel end torque value and the target reverse curve of the virtual throttle; the target reverse curve includes at least two virtual throttle reverse curves of power modes;

[0067] A closed-loop adjustment module 930, configured to perform closed-loop adjustment on the reverse basic value;

[0068] The arbitration module 940 is configured to arbitrate the closed-loop adjusted reverse basic value and the real throttle value to obtain the final virtual throttle value.

...

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Abstract

The invention provides a calculating method and device of a virtual accelerator and a controller and relates to the technical field of vehicle control. The method comprises the steps that torque arbitration is performed, and wheel-end torque values after vehicle arbitration are determined; according to the wheel-end torque values and target reverse push curves of the virtual accelerator, a reversebasic value of the virtual accelerator is determined; the target reverse push curve include, at least, virtual accelerator reverse push curves of two power modes; closed-loop regulation is conductedon the reverse basic value; the reverse basic value undergoing closed-loop regulation and a real accelerator value are arbitrated to obtain a final virtual accelerator value. According to the embodiment, on the premise that enough precision is ensured, an algorithm mode is simplified by combining with a closed-loop control method, code space is saved, and the running efficiency is improved. The intelligent control demand of existing vehicles having diversified driving patterns is better met, the universality and flexibility are better, platform-based operation can be better achieved, and software development cost is reduced.

Description

technical field [0001] The invention relates to the technical field of vehicle control, in particular to a calculation method, device and controller of a virtual throttle. Background technique [0002] With the increasing demand for intelligent automatic control in automobiles, functions such as adaptive cruise, cruise control, and automatic parking have become standard equipment for future automobiles. The advantage of these intelligent functions is that the driver's hands and feet are liberated, driving fatigue is reduced, and the driver can obtain a more comfortable driving experience, but it also increases the difficulty of controlling the vehicle control system. In the process of realizing these intelligent functions, the driver does not need to step on the accelerator / brake, but inputs the driving demand through the car multimedia switch button, thereby realizing the process of automatic vehicle control. Therefore, it is no longer possible to rely on the accelerator ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/04
CPCG05B19/04
Inventor 吕顺香
Owner GEELY AUTOMOBILE INST NINGBO CO LTD
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