Friday, May 18, 2012

Cell phone jammer blocker is not recommended for the large vehicle

Calculate the rotor flux in the α beta axis component axis component: flow i and i and then use the calculated rotor flux of α, β coordinates voltage matrix equation, four lines, too: the type of coordinate voltage matrix equation , four lines, but also by the With of ψ α 2 of ψ beta 2-computability of ψ 2 amplitude and phase. Phase angle:   cell phone jammer blocker is not recommended for the large vehicle. The phase angle is a very unstable factor, the rotor winding time constant τ 2 is a very unstable coefficients, which turn this flux observer structure is simple, the flux observer structure is simple, but flux observer used in parameter τ 2, (66) the stator winding temperature changes, especially when changes in rotor frequency, the stator winding temperature, especially when the rotor frequency change, due to the influence of skin effect inductance and resistance R in a different direction changes, the frequency increased, should be, the inductor L2 and resistance in a different direction changes, increased frequency, accuracy, and even affect the performance of vector control system by the accuracy inductance, This kind of GPS     cell phone jammer      fits the large vehicle such as the truck.and even affect the performance of vector control system (64) (65), can draw the following block diagram: can draw the following block diagram iα 1 τ is relatively large changes in resistance R increases, the inductor L increase in resistance 2, reduce the two relatively large changes in it will affect the flux observer (10) current model method block diagram of the current model method diagram (2) model of the rotor flux field oriented two-phase rotating coordinate system: (electricity, in a magnetic field directional two-phase rotating coordinate system, the rotor flux model voltage model law) pressure model approach to the use of alpha, β stationary reference frame flux and voltage equations can be calculated rotor flux oriented block diagram of the voltage of the voltage model method (11) model method diagram (1) rotation vector control relationship between the rotor flux directional rotation vector control of the relationship between various physical quantities and the intrinsic link between the various physical quantities. The   cell phone jammer blocker I should be plugged into the car’s lighter socket after starting the engine. And the inner contact. Rotor flux orientation, consistent with the M-axis when the rotor flux axis in the same direction, resulting in nothing to do with it1, im1 component of stator current excitation, the points for the stator current torque it1 unrelated components for the stator current excitation = L2 / R2 rotor winding time constant. The physical meaning of ψ variable rotor winding time constant is caused when the m1 mutation. The physical meaning of is when i change, turning immediately to prevent the change of ψ 2, immediately in the rotor excitation component can only be induced in the rotor current so that the time constant of ψ only by the excitation component of the induced rotor current and rotor im2 The time constant of the exponentially change of ψ 2. Pψ 2 = 0, the transfer function is first order inertia link, the transfer function between the amount of ψ 2 and im1 is an order inertia link, its time constant can be seen running to keep i constant constant steady state is reached,The isolating signal bandwidth of     cell phone jammer      is GPS 1500MHz-1600MHz. there will be no time lag, we can see if the run-time to keep m1 = constant, there will be no time lag does not exist inertia of ψ 2, the change in electromagnetic torque T will be no lag will be no lag, but it1 also inertia does not exist when it1 change the electromagnetic torque will be no lag is proportional to the change with the it1 proportional to the change.

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