a. A hard disk drive (HDD) is an electro-mechanical data storage device that stores and retrieves digital data using mag
Posted: Tue Apr 12, 2022 10:11 am
- A A Hard Disk Drive Hdd Is An Electro Mechanical Data Storage Device That Stores And Retrieves Digital Data Using Mag 1 (47.71 KiB) Viewed 24 times
a. A hard disk drive (HDD) is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage and one or more rigid rapidly rotating platters coated with magnetic material. Figure 1 shows a simplified block diagram of a HDD. For analysis purposes, given gain K=30 and G(s) = sst, determine the open- S[S+4) loop and closed loop poles of the HDD and plot these separately in the S-Plane. Also discuss the stability using two different approaches. (10 Marks) gain plant K G(s) Figure 1 _TEM_035_04 Page 2 Control and Instrumentation 1 (ENGG 0009.1) - Spring - 22 - CW (Assignment1) - All - QP b. For unity feedback system, the feed forward transfer function is K G(s) s(1 +0.45s)(1+0.15s)(1+0.55) Calculate the following: i. the range of values of 'K to maintain stability (5 Marks) ii. marginal value of k (2 Marks) iii. frequency of sustained oscillation at marginal k. (3 Marks)