Eddy current retarder controller and control method

An eddy current retarder and controller technology, which is applied in the field of automobile control, can solve problems such as the influence of braking effect and the calculation deviation of application effect parameters, so as to achieve the effect of improving reliability and ensuring driving safety.

Active Publication Date: 2015-07-29
HEFEI SHINNY INSTR CONTROL TECH
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Problems solved by technology

The program calculates the real-time braking force of the car after inputting relevant signals, and then applies the braking force to the braking system. Traffic conditions (mountain road, high speed, rain, snow), car load status (no load, heavy load) and other factors are related, because th

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  • Eddy current retarder controller and control method
  • Eddy current retarder controller and control method
  • Eddy current retarder controller and control method

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Such as figure 2 and image 3 As shown, an eddy current retarder controller includes a single-chip microcomputer and a signal input module 1 connected to the single-chip microcomputer, an indicator light 2, a CAN communication interface 3, a driving circuit 4 and a current sampling circuit 5.

[0026] Wherein signal input module 1 comprises: brake voltage sampling circuit 11, brake switch 12, speed sensor 13 and temperature sensor 14, described brake voltage sampling circuit 11 is connected with brake pedal, and described brake switch 12 is connected with brake pedal. The air pressure circuit is connected, and the speed sensor 13 and the temperature sensor 14 are respectively connected with the stator coil of the retarder; the indicator light 2 is a light column or a light bar display, and the variation range of its lighting corresponds to the output duty rati...

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Abstract

The invention discloses an eddy current retarder controller. The controller comprises a single chip microcomputer, a signal input module, an indicating lamp, a CAN communication interface, a drive circuit and a current sampling circuit, wherein the signal input module, the indicating lamp, the CAN communication interface, the drive circuit and the current sampling circuit are connected to the single chip microcomputer, the IGBT module of the drive circuit is connected to the single chip microcomputer through a gate circuit U3, the current sampling circuit comprises a sampling resistor R3, a retarder coil group L, an over-current protection circuit U4, a sampling signal conditioning circuit U5 and the like. The eddy current retarder controller is simple in structure, reliable in performance, judges the vehicle load situation, brake demand amount and the like of a vehicle at present by acquiring engine rotation speed, throttle opening degree, vehicle speed, temperature and other information, automatically adjusts output duty ratio of the IGBT module, reduces current of a retarder coil, accordingly automatically decreases output braking force, achieves automatic load adjustment control and ensures running safety.

Description

technical field [0001] The invention relates to the technical field of automobile control, in particular to an eddy current retarder controller. Background technique [0002] At present, the eddy current retarder is generally used in the braking of large vehicles to improve the braking force of the vehicle during driving. The eddy current retarder system is divided into two parts, the control circuit and the actuator. The actuator is a set of excitation The mechanical assembly composed of the coil and the corresponding mechanical structure, the control circuit generates a corresponding braking force on the rotating shaft (transmission shaft) of the actuator by passing current to the excitation coil of the actuator, and brakes the vehicle. Traditional eddy current retarder controllers generally adopt step-by-step control methods, such as figure 1 As shown, according to the change of the control switch (hand brake or foot brake signal), the multiple groups of excitation coils...

Claims

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Application Information

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IPC IPC(8): B60L7/28H02P15/00
CPCY02T10/64Y02T90/16
Inventor 王维斌吴成加
Owner HEFEI SHINNY INSTR CONTROL TECH
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