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 Author Comment/Response Juls 01/08/12 1:55pm Hi every body, my problem seems to be really simple but I dont know what to do. I just want to find the values of my 3 unknown Rr, X and Vm. I have the following code V1 = 400.6/sqrt (3); T = 20.6; Pmech = 3229; s = 0.0026; f = 50; p = 4; Z = 0.7061 + 12.6429*i; omega = 2*pi*(f/(p/2)); R1 = 0.125; solve[{3*Vm^2*(1/(Rr/(s*X) + s*(X/Rr))/omega)*X == T, N[abs*(V1 - V1*(R1/((Rr/s + X)*(Z/((Rr/s + X) + Z)) + R1))) == Vm], 3*Rr*((1 - s)/ s)*(abs*(V1/((Rr/s + X)*(Z/((Rr/s + X) + Z)) + R1) - (V1 - V1*(R1/((Rr/s + X)*(Z/((Rr/s + X) + Z)) + R1)/Z))))^2 == Pmech}, {Rr, X, Vm}] But when i evaluate the cell, i just have the same expression with my parameters inside the equation and no value for Vm, Rr and X.... I have tried to look at others examples but all other that you can find as help are easy and work, so I dont know. If somebody could find it, i would be very glad ! Best regard Attachment: exact torque speed characteristic.nb, URL: ,

 Subject (listing for 'solve function') Author Date Posted solve function Juls 01/08/12 1:55pm Re: solve function Nasser M. Ab... 01/11/12 5:40pm Re: solve function Juls 01/14/12 06:22am Re: Re: solve function Nasser M. Ab... 01/14/12 8:32pm Re: solve function Juls 01/17/12 12:07pm
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