DP12 7 The goal is to design an elevator control sys tem so that the elevator will move from floor to floor rapidly and stop accurately at the selected floor (Figure DP12 7) The elevator will contain from one to three occupants However, the weight of the ele vator should be greater than the weight of the occu pants you may assume that the elevator weighs 1000 pounds and each occupant weighs 150 pounds Design a system to accurately control the elevator to within one centimeter Assume that the large DC motor is field controlled Also, assume that the time constant of the motor and load is one second, the time constant of the power amplifier driving the motor is one half second, and the time constant of the field is negligible We seek a percent overshoot of P O 6 and a set tling time (with a 2 criterion) of T s 4 s

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DP12 7 The goal is to design an elevator control sys tem so that the elevator will move from floor to floor rapidly and stop accurately at the selected floor (Figure DP12 7)  The elevator will contain from one to three occupants  However, the weight of the ele vator should be greater than the weight of the occu pants  you may assume that the elevator weighs 1000 pounds and each occupant weighs 150 pounds  Design a system to accurately control the elevator to within one centimeter  Assume that the large DC motor is field controlled  Also, assume that the time constant of the motor and load is one second, the time constant of the power amplifier driving the motor is one half second, and the time constant of the field is negligible  We seek a percent overshoot of P O      6  and a set tling time (with a 2  criterion) of T s  4 s

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Question: DP12.7 The goal is to design an elevator control sys tem so that the elevator will move from floor to floor rapidly and stop accurately

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