Reference no: EM13949136
1. A PM DC motor is rigidly coupled to a fan; the fan load torque is described by the expression TL = 5 + 0.05ω + 0.001ω2, where torque is in Newton-meters and speed in radians per second. The motor has kaφ = kT φ = 2.42; Ra = 0.2 Q, and the inductance is negligible. If the motor voltage is 50 V, what will be the speed of rotation of the motor and fan?
2. A separately excited DC motor has the following parameters:
|
Ra = 0.1 Q
|
Rf = 100 Q
|
La = 0.2 H
|
|
Lf = 0.02 H
|
Ka = 0.8
|
Kf = 0.9
|
The motor load is an inertia with J = 0.5 kg-m2 and
b = 2 N-m-s/rad. No external load torque is applied.
a. Sketch a diagram of the system and derive the (three) differential equations.
b. Sketch a simulation block diagram of the system (you should have three integrators).
c. Code the diagram, using Simulink.
d. Run the following simulations:
Armature control. Assume a constant field with Vf = 100 V; now simulate the response of the system when the armature voltage changes in step fashion from 50 to 75 V. Save and plot the current and angular speed responses. Field control. Assume a constant armature voltage with Va = 100 V; now simulate the response of the system when the field voltage changes in step fashion from 75 to 50 V. This procedure is called field weakening. Save and plot the current and angular speed responses.
|
Examine the importance amendment of the u.s. constitution
: Examine the importance of the Fourth, Fifth, and Sixth Amendment of the U.S. Constitution, and determine which amendment offers the greatest protection for defendants in a typical U.S. court case. Justify your position.
|
|
Resistance and inductance parameters
: Determine the transfer functions from input voltage to angular velocity and from load torque to angular velocity for a PM DC motor rigidly connected to an inertial load. Assume resistance and inductance parameters Ra , La let the armature constant be..
|
|
What is the probability that a random sample
: What is the probability that a random sample of 90 test takers will provide a sample mean test score within 10 points of the population mean of 502 on the Critical Reading?
|
|
Manufacturing overhead cost
: manufacturing overhead cost is allocated to Product Y and Product Z.
|
|
Speed of rotation of the motor and fan
: A PM DC motor is rigidly coupled to a fan; the fan load torque is described by the expression TL = 5 + 0.05ω + 0.001ω2, where torque is in Newton-meters and speed in radians per second. The motor has kaφ = kT φ = 2.42; Ra = 0.2 Q, and the inductance ..
|
|
Controlling ideas aspects to compare or contrast
: Controlling Ideas: aspects to compare or contrast; choose three only, one for each body par
|
|
What is the solution to the problem
: Storing this data on multiple records is an example of redundancy which can cause several problems.
|
|
Calculate the cost transferred from cutting to sewing
: Calculate the cost transferred from Cutting to Sewing. Calculate the cost transferred from Sewing to Packaging. Calculate the cost transferred from Packaging to Finished Goods.
|
|
Strategies to develop formal business reports
: Discuss in detail a problem at work, persuading and convincing the reader that it needs fixing - Organize ideas logically by using transitional words, phrases, and sentences.
|