Potentiometer accelerator pedal position dynamic calibration method
A technology for the position and dynamic calibration of the accelerator pedal, which is applied in the layout of the control mechanism of the power unit, the measurement device, and the test of the vehicle. Accurate pedal position, good adaptability, make up for the effect of low precision
Active Publication Date: 2020-05-08
XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
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Problems solved by technology
[0004] Aiming at the problem that the improved potentiometer has poor anti-interference and the traditional control method cannot accurately measure the entire accelerator pedal in the range from zero accelerator to full-scale accelerator, this invention proposes a new calculation method for accelerator pedal control. Based on the calibration of the zero position, the control process of the full scale position is added, and the calibration process is extended to the full working cycle of the electronic control system to improve the control calculation accuracy of the accelerator pedal and to overcome the low accuracy of the potentiometer. , Poor anti-interference, resulting in the inability to accurately measure the entire accelerator pedal in the range from zero throttle to full scale throttle
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Embodiment Construction
[0025] The method of the present invention is illustrated below by specific examples. What this example uses is a six-cylinder heavy truck engine electronic controller, which includes an accelerator pedal control unit to be tested. The implementation steps are as follows:
[0026] Step 1: Determine the zero range value T corresponding to the potentiometer when calibrating the throttle zero position according to the characteristics of the potentiometer before installation PZ The full-scale value T corresponding to the potentiometer is 26% and the throttle is full-scale PW is 89%; set the first-order linear filter coefficient C FLTR =0.15; zero calibration delay T AZD 500ms, full scale bit calibration delay T AMD 500ms;
[0027] Step 2: After the car is started, according to the calibrated zero range value T PZ Set current throttle zero position P zero , while according to the calibrated full-scale value T PW Set the current full throttle position P whl ;
[0028] Step 3...
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The invention discloses a potentiometer accelerator pedal position dynamic calibration method and belongs to the field of vehicle-mounted power control. A traditional static pure zero calibration method is improved, and the problems that a potentiometer is low in precision and poor in anti-interference performance, and consequently the whole accelerator pedal cannot be accurately measured in the range from a zero-accelerator position to a full-range position are solved. The method comprises the following main steps: 1, calibrating a zero-position range value and a full-range position value; 2,determining a current accelerator zero position and a current accelerator full-range position Pwhl when the automobile is started; 3, periodically collecting accelerator signals; 4, conducting a zerocalibration process; 5, conducting a full-range position calibration process; 6, calculating a current accelerator position sequence value; and 7, determining the actually output accelerator position.
Description
technical field [0001] The invention belongs to the technical field of electronically controlled engine power control, and in particular relates to a dynamic calibration method for the position of a potentiometer accelerator pedal on an electronically controlled power control vehicle. Background technique [0002] The gas pedal is one of the most important signal input devices in a car, and the driver controls the acceleration characteristics of the vehicle through the gas pedal. The position of the accelerator pedal is usually controlled by the installed potentiometer position sensor on the current electric control vehicle. This kind of sensor reflects the change of position through the change of voltage. The voltage and position have a linear correspondence, which is convenient for calculation. Moreover, the space required for installation of this type of sensor is small, and two channels can be installed at the same time for redundant control in a limited space. But its ...
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Login to View More IPC IPC(8): B60K26/02G01M17/007G01M13/00
CPCB60K26/02B60K2026/026G01M13/00G01M17/007
Inventor 王瑞毛宁谭琪璘马振华梁欣颖王旭昊
Owner XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA