New answers tagged motors
4
The process of system identification consists of the following steps:
Choose an appropriate input for the system. The input should definitely satisfy the Persistence of Excitation condition and therefore the input signal should be sufficiently rich such that all frequencies of the system will be excited. This will lead to a collection of output data which ...
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Lets take a look at how a position control system would look with a stepper + timing belt system. This won't consider loads and size of motor.
Preview: It gets close. A servo-motor belt driven system could be a possibility. A higher-end stepper (double resolution with a good driver) may do it, but would need to be looked at very carefully.
Say top linear ...
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Unless have really good data for the propeller, motor, and airframe then you cannot "calculate".
Propeller thrust depends on the the RPM, and speed that the propeller is moving through the air. That is a 3-axis graph right there.
Motor speed depends the torque which is a two-axis graph. If the voltage is not fixed then it becomes another 3-axis ...
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Well, at 90km of height from earth surface the temperature is around -90°C, then if you use the temperature difference of 110° with surface temperature (20°C) you could think about getting some power from this temperature gradient. Also, at 300 km, the temperature goes around 2000°K. Just is not very convenient...
There is people thinking about using jet ...
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