Electric eddy speed damper and vehicle friction brake combined controller and control method

A technology of eddy current retarder and friction brake, which is applied in the field of joint control technology of braking system and can solve problems such as thermal recession of automobile main brake

Inactive Publication Date: 2008-08-13
JIANGSU UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

But the defect of this control method is: in some operating conditions, the use of a single retarder brake can meet the driving requirements of the car, but at this time the main brake of the car also participates in braking, so that the main brake of the car still has heat. Recession phenomenon

Method used

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  • Electric eddy speed damper and vehicle friction brake combined controller and control method
  • Electric eddy speed damper and vehicle friction brake combined controller and control method
  • Electric eddy speed damper and vehicle friction brake combined controller and control method

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Embodiment Construction

[0014] After the joint controller of the eddy current retarder of the present invention and the automobile friction brake is installed on the automobile, when the driver needs to decelerate and brake, the joint controller selects different control modes according to whether the joint control switch 16 is closed or not. Control the output torque of the eddy current retarder.

[0015] As shown in Figure 1, the microcomputer 1 collects the driving speed pulse signal 15, the position signal 14 of the brake pedal, the ABS control signal S1, the accelerator pedal signal S2 and the clutch pedal signal S3 in real time, calculates the size of the braking force required by the automobile, Timely convert the PWM control signal with proper duty ratio, and transmit it from the input / output interface 2 to the high-power interface isolation device 7 through the internal bus 3 to control the on-off of four insulated gate bipolar transistors 8, thereby controlling the eddy current retarder The...

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Abstract

The invention discloses the joint controller and the control method of an eddy current retarder and a automotive friction brake. The invention causes various switching signals, automotive traffic speed pulse signals and automotive braking pedal positions are inputted circuits and are connected with a micro-computer, which has a plurality of input / output ports; the central processing unit (CPU) receives the digital signals transmitted by the input / output ports, the counting results of counters and digital results of analog-digital converters (ADC) through internal bus, and transfers control signals out after logical judgment and numerical computing; when drivers do not put through joint control switches and do not receive the switch signals of joint controlling, the joint controller takes the automotive speed and acceleration as input parameters to adjust the output moment of the eddy current retarder, and the automotive speed can be maintained stability, so that the aims dual-mode brake and improving safety of vehicle traffic can be attained.

Description

technical field [0001] The invention relates to an automobile electronic control product, which is suitable for the joint control technology of the braking system composed of the friction brake (main brake) and the eddy current retarder of the transportation vehicle. Background technique [0002] At present, road transport vehicles are restricted by regulations, and it is necessary to install an auxiliary braking system (non-contact brake) to overcome the shortcomings of the friction brake (primary brake) of the transport vehicle. There are two main methods of controlling the eddy current retarder for vehicles based on power electronic technology: one is to make the stepless adjustment of the braking force of the eddy current retarder within the range from the minimum value to the maximum value which is almost zero. The second is that it has input current control and identification and load current sensing feedback circuit, adopts intelligent SIPMOS technology, according to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L7/26
Inventor 何仁赵迎生
Owner JIANGSU UNIV
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