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

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Suspension Systems - Currently Available Systems • Currently three types of vehicle suspensions are used: passive, semi-active, and active. • Systems implemented in automobiles today are based on hydraulic or pneumatic operation. • These solutions do not satisfactorily solve the vehicle oscillation problem, or they are very expensive and increase the vehicle’s energy consumption. • Significant improvement of suspension performance is achieved by active systems, however, they are expensive and complex. 78
Suspension Systems - Model Inputs The system has ten inputs, six of which are exogenous and the others controllable. These inputs are: • Exogenous: The road velocity inputs experienced at each wheel Vehicle pitch force (due to accelerating/braking/cornering the vehicle) Vehicle roll input (due to cornering the vehicle) • Controllable: Actuator forces applied to the suspension system at each corner of the vehicle. • Outputs The ride quality can be quantified by examining the vertical and angular accelerations of the vehicle body, as well as the ability for the vehicle to remain level regardless of operating conditions. 79
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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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Page 27 and 28: Elements of Control Systems Respons
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 76 and 77: Suspension Systems - Safety and Sta
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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