# HW4 - EE321 Spring 2012 Homework 4 Problem 1 Calculation of...

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EE321 Spring 2012 Homework 4 Problem 1 – Calculation of Torque The flux-linkage of a certain rotational electromechanical device may be expressed (5 2sin8 ) rm i λ θ = + where rm is the rotor position and i is the current. What is the electromagnetic torque ? Problem 2 – Magnetic Linearity Is the following system magnetically linear? Could it represent a conservative field ? 2 2 1 1 5 7 5 x i i + + = 1 2 2 2 3 2 5 i i x = + + Problem 3 – Magnetically Linear System The flux linkage equations of a magnetically linear system may be expressed + + = 3 2 1 3 2 1 9 3 1 3 8 1 2 1 1 2 4 i i i x x Compute the force. Problem 4 – Review of Torque Concepts The front of a motor is facing you. Attached to the shaft of the motor is a 10 cm beam (it is centered on the shaft and oriented from left to right). On the right side of the beam a

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HW4 - EE321 Spring 2012 Homework 4 Problem 1 Calculation of...

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