how to control the speed of squirrel cage synchonorous motor?
338875
Gears via manual transmission :)
189249
totaly diferent motor
1074782
You can check some CNC controllers here\nhttp://www.controlafzar.com/products_en/controller_page.htm
498437
1. Check up the distance between your location and the \nservice provider.  You will get the maximum speed if it \nwithin 3 to 3.5 KMs.  the copper connectivity should be pacca and the ohmic value must be within limits(600 ohms is\nstandard one)\n    2. Increase the RAM value in your computer.\n    3. Try and compare at non-busy hour, because it works\non sharing system.
473828
Try this link:\nhttp://www.bhphotovideo.com/bnh/controller/home?A=details&kw=RI2000ICD&is=REG&Q=&O=productlist&sku=349743
93256
Try this website. Scroll down to "The Circuit" ---\n\nhttp://www.play-hookey.com/ac_theory/ac_rc_series.html
1076490
Do you measure the speed? \nIn that case a feed back loop should be easy to make with Labview:\nmeasure the speed, and *slowly* change the current according to the difference with the requested value.  \n\nYou can measure the speed by counting light pulses from a light seen through  a hole mounted on the motor (or the object your driving with the motor).
205497
Hold down the R button to power slide. If you want a speed boost you can hold down R for the slide and rotate the control pad in the direction you are sliding. It really makes a difference in speed if done correctly.
911903
Well, you could build a *relatively* simple circuit that simply cut the frequency in half, but then again, what kind of sensor are you dealing with?\n\nWhy do you want to tune it to a lower frequency? It is not simple to just shift a frequency, there are many things to take into account; input impedance, output impedance (both may be frequency dependent), signal amplitude, and required voltage swing.\nI would only attempt this if it was not a vital sensor I was messing with.
895254
Running an electric motor "backwards" generates electricity.
721433
Edit: Perhaps I should revamp my answer to provide a clearer (actual) answer, that explains exactly what plays a role and, in effect, why I am right. I also added a couple sources you should read (in case you don't believe me ;-).\n\nAs asked at the first source (which has very good information about electric motors), "How can I make the motor spin faster or slower?". The answer is that it has to do with the power of the magnetic field. Because electicity is magnetic, you can either effect the speed by using a more powerful magnet or a more powerfully magnetic electrical current.\n\nTo quote Wikipedia about what a volt is, "The volt is the SI derived unit of electric potential difference". To truly understand what the "electric potential difference" means, you must first better understand the volt. The volt is a measurement of electromotive force (emf) and is just defined in terms of amperes and watts.\n\nAn amp is the constant current which produces a force equal to 2x10^-7N per meter, when travelling across two parellel wires one meter apart. It is one coulomb of charge per second (Q/t). It is a base unit upon which other units of electicity are defined (such as the volt).\nA watt is the unit of power equal to one joule of energy per second (P=W/t).\n\nHmm. Power? Power of a magnetic field? So how can you get more power in your circuit? If your power source is not rated by power output, then you can figure out the power using convertion:\nA=W/V=C/s\n\nIf you want a higher wattage, you can increase the voltage (electrical potential) or the ampage (current) or both. Or you can increase the charge - the amount of electricity (coulombs).\n\nSo the fact remains that voltage is *not* directly related to the speed of a motor. It can be directly converted in a way that makes it useful for that purpose, but any number of other things can be done to increase the power - the real goal you are looking for.\n\nThe answer is a definite "No." and a half-assed "Yes.".\n\n\n---Original Answer---\nNo. You might want to read more about the electric motor ( http://en.wikipedia.org/wiki/Electric_motor ) and magnetic properties of electricity ( http://en.wikipedia.org/wiki/Electromagnetism ). Also see the definitions of volt ( http://en.wikipedia.org/wiki/Volt ), watt ( http://en.wikipedia.org/wiki/Watt ), and amp ( http://en.wikipedia.org/wiki/Ampere ).
670662
Try Global Spec. It's free and allows you to put in your desired torque and rpm, then shows you matching products. Keep in mind they will spam the email account you register with mercilessly.
916579
You can't...\nYou may be able to get a 3 HP 12 volt motor at 4000 rpm but the battery would be huge and so would the motor. You could get a 110V 60hz 3hp motor at 4000 rpm.... Any standard electrical motor supply vender can get this for you
85096
The induction motor speed can be varied by varying the supply voltage as well as supply frequency. This can be done using variable speed drives. These drives accept 4 to 20 mA signal from process and vary speed from 0 to 100 % depending on the signal.This speed control is stepless.\nVariable speed drives work using IGBTs and Pulse width modulation techniques in firing of the thyristors to obtain variable frequency and voltage output.
1064277
Download Accelerator Plus\nyou can find it at http://www.speedbit.com/
104267
you need tight trucks to retain control at high speeds
583473
Pretty simple. If you are going to employ a variable frequency drive or inverter to vary the motor speed you must then select an inverter duty motor. The reason is because motors are designed to cool themselves while running. Conventional motors are designed to dissipate heat at full speed (60 Hz). If a conventional motor ran at lower speeds then eventually it would get too hot causing insulation breakdown and then.....bad things happen. \n\nInverter duty motors have more insulation and can therefore handle the heat at slower motor speeds.