Fuzzy controlled eddy current retardance and braking energy recovery device

Abstract

The invention applies the fuzzy control theory to an eddy current retardance and energy recovery device, and provides a fuzzy controlled eddy current retardance and braking energy recovery device. The device comprises five parts, namely, an energy recovery device, a brake pedal voltage sampling device, a capacitance battery electricity exchanging device, an eddy current retarder brake device and a fuzzy control system based on a single chip microcomputer. A capacitance battery conforms to the requirements for large recovered energy density of braking energy and large released density of the eddy current braking energy. The fuzzy rules of output signals at two ends of a potentiometer sensor are as follows: the voltage signals are divided into 4 fuzzy sets of ZO, PS, PM and PB, and the output signal of the single chip microcomputer is 4 fuzzy sets of ZO, PS, PM and PB. When the fuzzy controlled eddy current retardance and braking energy recovery device is used during braking, a generating set generates a braking torque to play an auxiliary retardance role, the defects that an existing eddy current retardance device cannot conduct energy recovery simultaneously and the existing energy recovery device cannot brake effectively can be overcome, and therefore, the fuzzy controlled eddy current retardance and braking energy recovery device can realize a braking function effectively while realizing the energy recovery.

Description

technical field [0001] The invention provides a fuzzy control eddy current retarding and braking energy recovery device, which belongs to the technical field of vehicle braking energy recovery. Background technique [0002] The frictional heat generated by the brakes of the car will cause the temperature of the brake disc or brake drum to be too high, resulting in a decline in braking performance, or even failure of the brake, causing major traffic accidents. Overheating of the brake system is also prone to problems such as brake drum cracking, severe wear of brake linings, and shortened brake system life. This problem is particularly serious for long-distance buses. In addition, due to the overheating of the brake, not only the wear of the friction plate is aggravated and the service life is shortened, but also it is easy to cause the tire to burst early, thus greatly increasing the operating cost. In order to solve this problem, an effective method is to add auxiliary br...

AI Technical Summary

Problems solved by technology

However, the existing eddy current retarder has the defect of being unable to recover energy, and the installed energy recovery device has the defect of low braking efficiency

The eddy current retarder consumes a lot of energy when it works, and needs to install a large-capacity battery-powered device, which increases the vehicle's load quality and transportation costs

Generally, lead-acid batteries have the defects of small charging current and small working current, which do not meet the requirements of high braking energy recovery energy density and high eddy current braking energy release density.

The battery that is charged and discharged at the same time also has the problem that the battery generates too much heat and burns the battery

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