2012 METU Lecture 5 Control of Smart Systems - Department of ...

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Suspension Systems - Safety and Stability Issues • Safety is the result of a good suspension design in terms of wheel suspension, springing, steering, and braking, and is reflected in an optimal dynamic behaviour of the vehicle. • Tire load variation is an indicator for the road contact and can be used for determining a quantitative value for safety. • Driving comfort results from keeping the physiological stress that the vehicle occupants are subjected to by vibrations, noise, and climatic conditions down to as low a level as possible. • The acceleration of the body is an obvious quantity for the motion and vibration of the car body and can be used for determining a quantitative value for driving comfort. 76
Suspension Systems - Conflicting Criteria • In order to improve the ride quality, it is necessary to isolate the body. • To improve the ride stability, it is important to keep the tire in contact with the road surface. • For a given suspension spring, the better isolation of the sprung mass from road disturbances can be achieved with a soft damping by allowing a larger suspension deflection. • Better road contact can be achieved with a hard damping preventing unnecessary suspension deflections. Therefore, the ride quality and the drive stability are two conflicting criteria. 77
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• • • • • • Lecture 1:
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Control Technologies for Smart Syst
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Control Systems Overview Definition
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Control Systems Overview Root locus
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Control System Technology • • M
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Open Loop System • • Reference
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Open Loop System Reference Input
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Error Detector Closed Loop System R
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Closed Loop System Sensor The outpu
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Closed Loop System The expression S
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Elements of Control Systems Respons
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Elements of Control Systems Respons
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Page 29 and 30: Controller Operation Controller pro
Page 31 and 32: Compensated Controllers • Compens
Page 33 and 34: PID Controllers • The PID control
Page 35 and 36: PID Controllers u(t) + P + e(t) +
Page 37 and 38: PID Controllers - Limitations • W
Page 39 and 40: PID Controllers - Limitations & Sol
Page 41 and 42: Design of Control Systems - Process
Page 43 and 44: Design of Control Systems - Digital
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Page 47 and 48: Algorithm Implementation Considerat
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Page 51 and 52: Control System Hardware Implementat
Page 63 and 64: Hard Disc Drive Description • Dis
Page 66 and 67: Hard Disc Drive Description • In
Page 68 and 69: Hard Disc Drive Description • The
Page 70 and 71: Design Challenges • The pivot bea
Page 72 and 73: Computer Hard Disc Drive - Transfer
Page 74 and 75: Active Suspension Systems - Introdu
Page 78 and 79: Suspension Systems - Currently Avai
Page 80 and 81: Suspension Systems - Operating Scen
Page 82 and 83: Suspension Systems - Bose System
Page 84 and 85: Active Suspension Systems Bose Acti
Page 86 and 87: Resources Feedback Control of Dynam
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2012 METU Lecture 5 Control of Smart Systems - Department of ...

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