How to select a linear motor?
time£º2017/5/14 click£º7127
The type of linear motor recommends thrust speed(FP), and then looks at continuous power, thermal resistance, heat dissipation methods and conditions, and then again looks at the power supply voltage and current(VP and IP), The requirement for rapidity also depends on the electrical time constant(Te).
The thrust constant of the linear motor is indicated by the output current ratio, with the symbol N/Arms
The inverse potential coefficient is indicated by the voltage speed ratio, with the symbol Vrms /(m/s)
The relationship can be derived from the electromechanical conversion formula of the motor. The specific process is as follows:
The mechanical output power of the linear motor is Pm = F * V = Cm * I * V, where Cm is the thrust coefficient and I is the current.
The electromagnetic conversion power in the electrical power consumed by the motor is: Pe = <UNK> * I = Ce * V * I, where Ce is the inverse potential coefficient, V is the motor operating speed, and I is the current
Let Pm = Pe, then there is Cm * I * V = Ce * V * I, so that Cm = Ce can be derived, so that it can be labeled 1, and the <UNK> is regarded as the reverse potential of the DC system;
Considering Pe = 3 <UNK> * I, that is, <UNK> is the opposite potential, it can be labeled as 3;
Considering Pe = sqrt(3) * <UNK> * I, that is, <UNK> is a line anticurrent, it can be labeled as sqrt(3), IE 1.732; If the given <UNK> is an amplitude instead of a valid value, then in addition to sqrt(2), there is 1.732 / 1.414 = 1.225
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Linear motor