Cell phone jammer of this company has got much support

An analogy with the DC motor: the analogy with the DC motor DC motor (1): flux generated by the field winding, and not participate in the system dynamics over DC motor pre-built: flux generated by the excitation winding, the DC motor armature voltage and an output variable - speed process, the dynamic mathematical model is only one input variable - the armature voltage and an output variable speed. cell phone jammer of this company has got much support. Dynamic mathematical model has only one input variable armature voltage and an output variable speed. Mechanical and electrical time constant and the armature time constant in the control object contains τe, if the SCR rectifier devices are enumerated, the rectifier devices enumerated rectifying device enumerated SCR lag time constant s, the lag time in the works constant enough to allow the assumption can be described as univariate (single-input single-output) third-order single-input, enough to allow the assumption that conditions can be described as single-variable single-input single-output third-order linear systems, linear systems is entirely possible to use the classic linear control theory and engineering design methods developed for analysis and design. cell phone jammerhas successfully taken the scientific experiment. The engineering design method for the analysis and design. Mechanical structure of the brush in the magnetic pole geometry online, on the mechanical structure of the brush in the magnetic pole geometry online, the field winding main orthogonal in space, the electromotive force of the armature reaction flux Φ and the motor current of Fe, in orthogonal space, ie do not influence each other, can be individually adjusted individually adjustable. of Φ ⊥ Fe do not affect each other can be adjusted individually the expression of τ torque: torque expression T = C rΦ ia (2) AC motor AC motor: AC motor induction motor speed regulation to be coordinated control of V / f the coordination of control, coordination and control of induction motor speed regulation to be carried out two kinds of voltage and frequency independent variables, if we consider that the voltage is a three-phase, independent variables, if they consider voltage three-phase four independent variables, the actual number of input variables. It is suggested that one cell phone jammershould be installed at every floor at least. Output variables, in addition to speed, the flux would count as an independent variable. Variables. Output variables, in addition to speed, the flux would count as an independent variable. Motor external plus three-phase voltage, the establishment of magnetic flux and speed change is carried out at the same time, external and three-phase voltage, the establishment of magnetic flux and speed change is carried out at the same time, but in order to get a good dynamic performance, but also hope exert some control on the flux in order to get a good dynamic performance, but also hope to exert some control over the flux, it remains constant as far as possible in a dynamic process. Induction motor is more than one variable (multi-input in a dynamic process and try to keep constant. Induction motor is more than one variable multiple input multiple output) system voltage (current flux, speed between the impact of systems, current) flux multi-output system, voltage and current flux, the mutual influence between the speed, so it is strongly coupled multivariable systems. Is strongly coupled multivariable systems. The school decides to adopt 15 sets of directional mobile phone jammer.Multiply the current torque induction motor, the magnetic flux induction motor, the magnetic flux take the current to produce torque, speed by the magnetic flux induction electric they are at the same time change, the potential at the same time they are changes in the mathematical model on a product containing two variables, even without considering the magnetic saturation effects and other factors, the mathematical model is nonlinear. Product item, even without considering the magnetic saturation effects and other factors, the mathematical model is nonlinear.