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Intelligent parking braking and auxiliary starting control method

A control method and technology of a brake controller, which are applied in the directions of brakes, electric braking systems, vehicle components, etc., can solve the problems of unregulated braking force, reduced starting time, driver comfort, and harsh working environment.

Inactive Publication Date: 2012-05-02
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the EPB system can realize functions such as automatic parking, auxiliary starting on slopes, emergency braking, and active braking, most EPB systems use the parking braking force implemented by the electromechanical brake, and the EPB button has no mechanical function. Connect the wheel cylinder, just an electronic switch
The assembly of electromechanical brakes will bring about a significant increase in cost, and some cars are equipped with such electromechanical brakes on all four wheels, which has caused most of the EPB to appear on the equipment list of luxury cars
Moreover, the electromechanical brake is arranged on the brake caliper body, the working environment is harsh, its reliability is affected, and the reliability of the electronic control system cannot be guaranteed when it fails.
In addition, the current EPB system requires the driver to press the EPB button to trigger the electric parking brake function. Although the physical burden is reduced, it is still a bit cumbersome, and the braking force does not change with the slope and the vehicle quality. adjust
Always apply the parking brake force under full load and suddenly release the brake force when starting, the car will run forward and may cause the engine to stall, reducing the starting time and driver comfort
Therefore, intelligent parking is not realized

Method used

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  • Intelligent parking braking and auxiliary starting control method
  • Intelligent parking braking and auxiliary starting control method
  • Intelligent parking braking and auxiliary starting control method

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Embodiment Construction

[0117] The present invention will be described in detail below in conjunction with the drawings:

[0118] The present invention is to develop a set of intelligent parking brake and auxiliary starting control system based on the original hand brake hardware of the car, so that the two work in parallel without interference, according to the external parking gradient of the car, the driver’s driving intention and In the driving state of the vehicle, by controlling the output torque of the DC motor and the coordinated work of the ratchet and pawl mechanism, the metal cable is dragged to realize the intelligent parking of the vehicle, assisting in starting and emergency braking. Improve the car's handling comfort, slope start safety and system reliability. The use of this system will greatly reduce the difficulty of starting on slopes for unskilled drivers and the physical consumption of parking brakes for female or frail drivers. The invention will reduce the cost of electric parkin...

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Abstract

The invention discloses an intelligent parking braking and auxiliary starting control method, which includes steps of firstly, initializing an intelligent parking braking controller and reading control parameters stored in a single-chip microcomputer, secondly, reading a vehicular speed signal V, a brake pedal travelling signal Db, an accelerator pedal travelling signal Da, a transmission gear signal Js, an ignition key door switch signal Key, an enable switch signal Button, a front wheel speed signal wf, a rear wheel speed signal wr and a gradient signal Sa, thirdly, invoking and performing an intelligent parking control procedure, an auxiliary starting control procedure, a parking brake automatic retracting control procedure, a long-term parking control procedure, an emergency braking control procedure or manual reset cutting-off control procedure according to the read signals and fulfilled response conditions, fourthly, converting the target torque of a motor according to the motor target braking force calculated from the control procedures, fifthly, calculating the target rotor current of the motor according to the obtained target torque of the motor, and sixthly, controlling the duty ratio of a motor PWM (pulse width modulation) driving control circuit according to the target rotor current of the motor.

Description

Technical field [0001] The invention relates to an intelligent parking brake and auxiliary starting control method which can be applied to both manual gear and automatic gear models. Background technique [0002] With the development of automobile technology, people have higher and higher requirements for the comfort, safety, intelligence and humanization of automobiles. For the currently commonly used mechanical human parking brake system, it is also developing in the direction of electronic control. The service brake system developed by Bosch has a hill hold control function (HHC). For manual models equipped with this system, when starting on a hill, the accelerator pedal, clutch pedal and parking handle (or brake pedal) are not required to complete the start on the hill; for automatic models equipped with this system, when starting on a steep slope, There is no need to use the accelerator pedal and the parking handle to complete the hill start. When the car stops and the dr...

Claims

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Application Information

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IPC IPC(8): B60T8/17B60L7/24
Inventor 王军年王庆年王青松宋传学曲晓东
Owner JILIN UNIV
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