automatic shift control system

Abstract

The invention relates to an automatic gear shifting control system. Two I / O (Input / Output) output ports of a TCU (Transmission Control Unit) are respectively connected with an electromagnetic valve driver module, a PWM (Pulse-Width Modulation) output port of the TCU is connected with a relay motor driver module, a timing / counter input port of the TCU is respectively connected with a gearbox input shaft rotation speed transducer circuit, a gearbox output shaft rotation speed transducer circuit, a vehicle speed sensor circuit and a gear ring rotation speed transducer circuit, an A / D (Analog to Digital) conversion port of the TCU is connected with a displacement sensor circuit of an acceleration / brake pedal, the electromagnetic valve driver module circuit is respectively connected with a hydraulic clutch operating mechanism and a brake operating mechanism, and the relay motor driver module circuit is connected with a motor. By collecting signals of each sensor, the operating state of a vehicle can be comprehensively treated and judged on-line in real time; and then by controlling a gear shifting mechanism, the automatic speed change of the vehicle can be realized, the difference of gear shifting techniques of drivers can be eliminated, the labor intensity of the drivers is reduced, the vehicle running safety is improved, and the power performance and economic performance of the vehicle are improved.

Description

technical field [0001] The invention belongs to the technical field of automatic control systems for new energy vehicles, and relates to an automatic shift control system used in conjunction with pure electric vehicles. Background technique [0002] New energy vehicles have been regarded as one of the country's "seven strategic emerging industries": on September 8, 2010, the executive meeting of the State Council reviewed and passed the "Decision of the State Council on Accelerating the Cultivation and Development of Strategic Emerging Industries". The "Decision" selects seven industries of "energy conservation and environmental protection, new generation information technology, biology, high-end equipment manufacturing, new energy, new materials and new energy vehicles" as "accelerated cultivation and development based on major technological breakthroughs and major development needs" Strategic emerging industries.” And focus on key areas to accelerate progress. On March 3,...

AI Technical Summary

Problems solved by technology

The earliest manual transmission (MT) realizes gear shifting through clutches and manual shift forks. This transmission has the advantages of simple structure, compact shape, high transmission efficiency, high reliability, and low cost. Extensive, but because the vehicle must disengage the clutch during the gear shifting process, resulting in power interruption, which affects the vehicle's power and driving comfort, and frequent manual gear shifting leads to driving fatigue and potential safety hazards

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