Servomotor for ETC and control system thereof

Abstract

The invention provides a servomotor for ETC and a control system thereof. The servomotor include a motor main body, the motor main body includes a housing, a rotor and a stator are arranged in the housing, the rotor has a rotating shaft and a magnet fixed on the rotating shaft for driving, and the stator has a stator core arranged on the outer periphery of the magnet and a winding for generating a rotating magnetic field. The inner diameter of the stator is in the range of 65-69 millimeters, the stator is provided with 10-14 stator grooves, the stator is formed by the lamination of stator punching plates; the rotor is an eccentric magnetic steel rotor of a surface-mounting structure, the rotor is provided with 7-9 rotor grooves, and the rotor is formed by the lamination of rotor punching plates; the outer diameter of each stator punching plate is in the range of 122-128 millimeters; the winding is a fractional groove concentrated winding; the torque ripple of the motor is reduced by the magnetic steel eccentricity, the zero-load back EMF waveform is optimized, so that the motor can work continuously, efficiently and smoothly.

Description

technical field [0001] The invention relates to the field of electronic non-parking toll collection system, in particular to a servo motor used for ETC and its control system. Background technique [0002] With the continuous improvement of people's living standards, the number of private cars has increased sharply, which has led to an increase in the load of the existing manual toll collection system for the management of expressways, roads, bridges, and parking lots, and has caused the loss of car time and fuel waste due to waiting for payment. The charging efficiency of the parking toll collection system is 5 to 10 times higher than that of the manual toll collection system. Therefore, the electronic non-stop toll collection system is widely used in highway toll collection, road and bridge toll collection, and parking lot management toll collection. [0003] In the prior art, the motor used for ETC, that is, the electronic toll collection system is usually a traditional t...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the motor used for ETC, that is, the electronic toll collection system is usually a traditional three-phase asynchronous motor. The power density and power factor of the traditional three-phase asynchronous motor are low, the volume is large, the waste of electric energy is large, and the investment of the power grid is large. Noise, vibration and slow response

There is still room for improvement in the charging efficiency of the electronic toll collection system using traditional three-phase asynchronous motors

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