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# Motor for vehicle chassis working principle and use requirements

Jun 02, 2018

The motor for vehicle chassis of a car is to a certain extent mainly relied on the commutation function of the commutator and the brush, so that the principle of direct current electromotive force can be made when it is drawn directly from the brush end. The direction of the induced electromotive force is determined by the right-hand rule.

How Motor for Vehicle Chassis Works

The direction of the stress of the conductor of the motor of the chassis motor of the automobile is mainly used for the determination of the left hand rule, and the electromagnetic force will directly form a moment acting on the armature when it is used. In the operation, this torque is called electromagnetic rotation in the rotating motor. The moment, the direction of the torque is counterclockwise, in an attempt to rotate the armature counterclockwise. If this electromagnetic torque can overcome the resistive torque on the armature (for example, drag torque due to friction and other load torques), the armature can be rotated counterclockwise.

The motor for vehicle chassis of the automobile mainly depends on the DC operating voltage motor to a certain extent. It is widely used in recorders, video recorders, video players, electric razors, hair dryers, electronic watches, and toys during operation. The stator magnetic pole (main magnetic pole) of an electromagnetic DC motor consists of a core and a field winding.

The chassis motor of the vehicle can effectively be divided into series excitation DC motor, compound excitation DC motor, shunt DC motor and shunt DC motor according to different excitation modes. The law (which is generated by the energization of the excitation coils of the stator poles) is also different.

The rotor winding and the excitation winding of the chassis motor of the vehicle are effectively connected in series by their brush and commutator, and the excitation current is proportional to the armature current. The magnetic flux of the stator increases with the increase of the excitation current, and the torque is approximated. In proportion to the square of the armature current, the speed drops rapidly with the increase of torque or current. The starting torque can reach more than 5 times of the rated torque, the short-time overload torque can reach 4 times of the rated torque, the speed change rate is large, and the no-load speed is very high (Generally it is not allowed to run under no-load ).

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