Brushless direct-current motor for single-step motion of automobile gear selector

Abstract

The invention relates to a brushless direct-current motor for single-step motion of an automobile gear selector. The brushless direct-current motor comprises a driving circuit and a brushless motor, and is characterized in that the brushless motor consists of a stator and a rotor, the stator is a coil winding, the U, V and W phases of the stator are fixedly connected with the shell of the motor to form a circuit, and the rotor consists of a permanent magnet; a magnetic field is formed in the motor by supplying power for the U, V and W phases, the direction of the magnetic field constantly changes, and the rotor can rotate under the effect of the magnetic field; the position of the magnet is detected and the voltages of the U, V and W phases of the motor are controlled through the Hall sensor so as to control single-step rotation of the motor; the motor rotates in a single step, and works in a three-phase self-locking mode or a two-phase self-locking mode. The brushless direct-current motor has the advantages of high precision, adjustable torque and convenience in control.

Description

technical field [0001] The invention relates to an automobile gear selection technology, in particular to a single-step movement of a brushless DC motor used for automobile gear selection. Background technique [0002] In the electric-electric AMT system, the brushless DC motor and mechanical stroke control technology are selected for the executive motor, which transmits the movement and power to the shift fork through a certain mechanical device-reduction mechanism, so as to control the gear shift. control. The feature of this control is a brushless DC motor. According to the shift sequence requirements, the gear selection fork is driven by the reducer to complete the gear selection control. In order to ensure the speed and accuracy of gear selection, the mechanical stroke control technology adopts the open-loop + closed-loop control method. The open-loop part is for the running speed, and the closed-loop is to ensure the control accuracy. The characteristics of control a...

AI Technical Summary

Problems solved by technology

The characteristics of control are divided into mechanical mechanism connection and mechanical stroke control technology. There are many nonlinear time-varying and external interference situations in the process of realizing the motor mechanical mechanism. The linear control theory is difficult to solve the problem well

[0003] Traditional brushless DC motor drivers only realize simple movements such as forward rotation, reverse rotation, and braking of the motor. Single-step motion is only the characteristic of stepping motors, and it is difficult to adapt to occasions that require precise control of brushless DC motors.

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