Rus Load Consider The Disk Drive Read System Disturbance Ta Amplifier Coil Desired V S K K Head R Ls Position Senso 1 (65.28 KiB) Viewed 7 times
Rus Load Consider The Disk Drive Read System Disturbance Ta Amplifier Coil Desired V S K K Head R Ls Position Senso 2 (39.85 KiB) Viewed 7 times
RUS) Load Consider the disk drive read system: Disturbance TA) Amplifier Coil Desired V(s) K. K head R+Ls position Sensor H(s) = 1 s(s+b) Ys) Actual position Symbol Typical Value Parameter Inertia of arm and read head Friction Amplifier Armature resistance Motor constant Armature inductance J b K R 1 Nms-/rad 20 Nm s/rad 10-1000 112 5 Nm/A 1 mH Km L The disk drive must accurately position the head reader while being able to reduce the effects of parameter changes and external shocks and vibrations. The mechanical arm and flexure will resonate at frequencies that may be caused by excitations such as a shock to a notebook computer. Disturbances to the operation of the disk drive include physical shocks, wear or wobble in the spindle bearings, and parameter changes due to component changes. For K=10, simulate the feedback system using MATLAB Simulink. 1. Determine the steady state error for a step input in the reference signal R(t).
2. Determine the steady state error for a step input in the disturbance signal D(t). 3. Compare the closed-loop responses for Ki= 10 and 80. 4. For illustration sake, assume the sensor contributes a sinusoidal measurement noise at a frequency of 100 rad/sec and an amplitude of 0.1 (use a signal generator set to sine wave and frequency in rad/sec). Plot the output responses and the control output signals V(s) for the gain K & Ge(s)=10 K/(s+10) and Ge(s)=100 K/(s+100). Submit a report with plots to support your answers (Upload the Simulink model along with the report)
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