If the spinning coefficient is too large, the left deviation of the coil along the rotation directio

The self-inductance coefficient of the coil l = n 2 * s l The self-inductance coefficient is determined by the nature of the coil: number of ties, coil length, inductance factor, etc.1. The coil is hollow and the permeability is constant, so the self-inductance coefficient of the coil has nothing to do with the current.

2。The coil has an iron core. Because generally the iron core is ferromagnetic, and the permeability of ferromagnetism is not constant, it is changing.

The higher the current, the higher the magnetic flux density of the coil, the smaller the self-inductance coefficient. In other words, the self-inductance coefficient is related to the current.

This power is the power that enables the moving parts to move and achieve a certain speed and acceleration.

From P=FV=FV=MGUV, the friction coefficient U can be checked in the mechanical manual, V is the linear motion speed of the chain, this is the lowest power, and the actual calculation should also add the transmission efficiency and the efficiency of the motor and the force required to achieve a certain acceleration. Transmission efficiency can also be checked in the manual to see what transmissions you have included.

Yes, if the input torque is known, then the power P mn 9550 is transmitted

Supplementary answer 1, the power of the transmission chain is p=fv, where f=f1-f2, f1 is the tight edge tension, and f2 is the loose edge tension. In addition, f is equal to the sum of all the frictional forces on the transmission chain, so the m should be the mass of the chain.

The self-inductance BAI coefficient of the coil follows the shape of the coil

form, length, number of turns, and whether there is a DAO in Zhi

iron core and other factors. Coil back.

The larger the area, the shorter the coil, and the denser the number of turns per unit length, the greater its self-inductance coefficient. In addition, the self-inductance coefficient of a coil with an iron core is much larger than that without an iron core. The formula is l=(usn 2) l, and the meaning of each letter is:

U represents the dielectric permeability in the coil, S represents the coil area, N represents the number of coil turns, and L represents the coil length.

The transmission ratio is the ratio of the angular velocity of the two rotating members in the mechanism, also known as the speed ratio. The transmission ratio of component a and component b is i= a b=na nb, where a and b are the angular velocities (radian seconds) of components a and b respectively; Na and Nb are the rotational speeds of components A and B, respectively** minutes).

The torque force (in "newtons") multiplied by the length of the arm (in "meters") is the torque (in "newton-meters").

Rotational speed is a measure of the speed of a rotating object in "revolutions". This has nothing to do with torque and torque.

In addition, when the engine speed is constant, the torque output of the gearbox is greater than that of the 5th gear, which is the result of the transmission (similar to the fixed force acting on different arms), and does not mean that the engine speed and torque have any relationship.

The ratio of the instantaneous input speed to the output speed in the mechanism is called the transmission ratio of the mechanism. The ratio of the angular velocity of two rotating members in the mechanism is also called the speed ratio. The transmission ratio of member a and member b is a b na nb, where a and b are the angular velocities (radian seconds) of components a and b respectively; Na and Nb are the rotational speeds of components A and B, respectively** minutes) (Note:

and n after a and b for the foot mark). When the angular velocity in the formula is instantaneous, the obtained transmission ratio is instantaneous. When the angular velocity in the formula is the average value, the obtained transmission ratio is the average transmission ratio.

For most gear drives with correct tooth profiles, the instantaneous gear ratio is constant, and for chain drives and non-circular gear drives, the instantaneous gear ratio is variable. For meshing transmission, the transmission ratio can be expressed by the number of teeth Z and Zb of A and B wheels, B Zb Z; For friction transmissions, the gear ratio can be expressed by the diameters of the A and B wheels and B, B B. At this time, the transmission ratio is generally an expression of the average transmission ratio.

In hydraulic transmission, the transmission ratio of hydraulic transmission elements generally refers to the ratio of turbine speed and pump wheel speed b, that is, = b. Hydraulic transmission elements can also be combined with mechanical transmission elements (generally with various gear trains) to obtain a variety of different values of transmission ratios (see gear train for gear train transmission ratios). The piston does not rotate, it is connected to the crankshaft by a connecting rod, and the crankshaft is connected to the external power transmission device through other equipment.

The piston reciprocates in the cylinder, and the piston drives the crankshaft connected by the connecting rod to rotate once per cycle. The piston needs to move for two cycles for each complete workmanship of the engine, that is, up and down a total of four times, so that the crankshaft of the engine rotates twice. And this is only relative to a cylinder, now the general car is a multi-cylinder engine, the work process is more complicated.

In general, the rotation speed of the shaft that outputs torque (that is, power) outward is the speed of the engine. Torque is the force that causes an object to turn. Engine torque is the torque that the engine outputs from the crankshaft end.

Under the condition of fixed power, it is inversely proportional to the engine speed, the faster the speed, the smaller the torque, and vice versa, it reflects the load capacity of the car within a certain range.

The ratio of the speed of the driving gear to the speed of the driven gear is called the transmission ratio, the larger the transmission ratio, the lower the speed, the greater the torque, the smaller the transmission ratio, the higher the speed, the lower the torque.

The coil of the generator is divided into two items, one is called the stator armature winding, which generally does not rotate, and the other is called the rotor armature winding (magnetic pole winding) that rotates with the rotor. In the case of a cone-driven generator, the rotor coil rotates in the opposite direction; If the shaft is extended, the direction is determined by the power steering.

The general generator looks clockwise from the head, as if this is the generator is well done, and it should be related to the stator winding. Once it's determined, it doesn't change.

The generator of the permanent magnet does not matter how it rotates, it all generates electricity.

The arc suppression coil is generally overcompensated, and in order to obtain the inductance current of 20A, the inductor current of 55A needs to be compensated.

The arc suppression coil needs to be compensated for 15A, inductive reactance.

10 3 15 = 385 , inductive reactance = 2 fl, find l =

So choose C

Arc suppression coils are generally overcompensated.

Upstairs is very right, we all know that the use of arc suppression coil compensation is to be compensated, under-compensation and full compensation are disadvantages, this question has several points, not just a division.

The self-inductance coefficient of the coil is related to factors such as the shape, length, number of turns, and whether there is an iron core. The larger the coil area, the shorter the coil, and the denser the number of turns per unit length, the greater its self-inductance coefficient. In addition, the self-inductance coefficient of a coil with an iron core is much larger than that without an iron core.

The calculation formula is L=(USN2) L, and the meaning of each letter is: U represents the dielectric permeability in the coil, S represents the coil area, N represents the number of coil turns, and L represents the coil length. Hope.

1.If the self-inductive electromotive force generated when the current passing through the coil changes by 1 amp in 1 second is 1 volt, the self-inductance coefficient of this coil is 1 h. Commonly used smaller units are milli-hennel and micro-hein.

1h=1000mh 1h=1000000uh

Understood on two levels:

1.The power supply causes the rotor of the motor to rotate.

Rotating motors generally need to generate a rotating magnetic field through the excitation of a power source.

Therefore, the prerequisite is to have a rotating magnetic field, which is generally used to generate a rotating magnetic field by the stator winding of the motor. The voltage between the phases of the three-phase balanced power supply is 120 degrees different in phase, and the three windings in the stator of the motor are also 120 degrees different from each other in the spatial orientation, so that when the three-phase power supply is introduced in the stator winding, the stator winding will produce a rotating magnetic field. For each period of the current change, the rotating magnetic field rotates once in space, i.e., the rotational speed of the rotating magnetic field is synchronized with the change of the current.

1) For cage asynchronous motor: after the stator winding generates a rotating magnetic field, the rotor guide bar (squirrel cage bar) will cut the magnetic field lines of the rotating magnetic field and generate an induced current, and the current in the rotor guide bar interacts with the rotating magnetic field to generate electromagnetic force, and the electromagnetic torque generated by the electromagnetic force drives the rotor to rotate along the direction of the rotating magnetic field. In general, the actual speed of the motor is lower than the speed of the rotating magnetic field.

Because if the two are equal, then the rotor guide strip and the rotating magnetic field will not move relatively, the magnetic field lines will not be cut, and the electromagnetic torque will not be generated, so the speed of the rotor must be less than the speed of the magnetic field, and the difference between the two is a slip.

2) For synchronous motors: the rotor is excited by direct current or permanent magnet, so after the stator winding generates a rotating magnetic field, the rotor will rotate at the same speed as the rotating magnetic field.

These are the two basic principles of how electric motors work.

In addition, the reversal can be completed by adjusting the phase sequence, such as adjusting the wiring between the three-phase motor U, V, W and the power supply from A, B, and C to A, C, and B. If the motor is driven by an inverter, it is enough to directly reverse the command.

2.Mechanical elements such as gears are coaxially connected to the rotor of the motor and are driven to rotate. This is based on the principle of mechanical transmission.

There are stator coils and rotor coils inside the motor, and the magnetic field force generated by the stator coil and the rotor coil interact with each other to make the rotor rotate, and the rotor has a shaft that outputs torque outward, so as to drive the gear to rotate.

Changing the direction of coil excitation also changes the direction of rotor rotation.