Deadband and Step Response
THE UNIVERSITY OF ZAMBIA SCHOOL OF ENGINEERING DEPARTMENT OF ELECTRICAL AND ELECTRONIC ENGINEERING
EE 562 LAB REPORT LAB 2
NAME: MWAMBA GILBERT COMP#: 28003411 COURSE: EE 562 GROUP MEMBERS : KAVUMBA PRIDE NALUMINO ILUBALA ATTENTION : IR. D.M. NGENDO
TITLE: DEADBAND AND STEP RESPONSE
OBJECTIVES To study the deadband and step response of a position control system. To observe the effect of gain changes on the effect of added inertia upon the step response.
EQUIPMENT REQUIRED 1 operational Amplifier unit 150A 1 Attenuator unit 150B 1 pre-Amplifier Unit 150C 1 Servo Amplifier 150D 1 Power Supply 150E 1 Motor unit 150F 2 Input and Output potentiometers 150H and 150K 1 Inertia disc with fittings from load unit 150L 1 Voltmeter (30-0-30)
INTRODUCTION Deadband is the minimum input signal required to get a system response, knowing the error factor we can relate the signal input to the degree of misalignment that can occur before there is a corrective response by the system. In practical situation such as in a lift, if users wish to go from one floor to another they want to do it swiftly, smoothly and precisely. They do not want to come to a juddering stop, move up and down at the chosen floor before coming to a stop or worst of all have to jump out because the lift will not stop moving up and down. There are a host of situations in industry commerce and transport where the use of electromechanisms required precise and fast control.
PROCEDURE Practical 1: Study of the effect of gain on deadband
Figure: experimental setup
The power the power supply was switched on. The generator was zeroed and the sliders of the rotary potentiometer where connected to the input of the operational amplifier. The slider of gain control, potentiometer 1 was set to zero. The pre amplifier was also consequently set to zero. The input dial was slowly rotated clockwise until the response just occurred at the output dial. The angle of
EE 562 LAB REPORT LAB 2
NAME: MWAMBA GILBERT COMP#: 28003411 COURSE: EE 562 GROUP MEMBERS : KAVUMBA PRIDE NALUMINO ILUBALA ATTENTION : IR. D.M. NGENDO
TITLE: DEADBAND AND STEP RESPONSE
OBJECTIVES To study the deadband and step response of a position control system. To observe the effect of gain changes on the effect of added inertia upon the step response.
EQUIPMENT REQUIRED 1 operational Amplifier unit 150A 1 Attenuator unit 150B 1 pre-Amplifier Unit 150C 1 Servo Amplifier 150D 1 Power Supply 150E 1 Motor unit 150F 2 Input and Output potentiometers 150H and 150K 1 Inertia disc with fittings from load unit 150L 1 Voltmeter (30-0-30)
INTRODUCTION Deadband is the minimum input signal required to get a system response, knowing the error factor we can relate the signal input to the degree of misalignment that can occur before there is a corrective response by the system. In practical situation such as in a lift, if users wish to go from one floor to another they want to do it swiftly, smoothly and precisely. They do not want to come to a juddering stop, move up and down at the chosen floor before coming to a stop or worst of all have to jump out because the lift will not stop moving up and down. There are a host of situations in industry commerce and transport where the use of electromechanisms required precise and fast control.
PROCEDURE Practical 1: Study of the effect of gain on deadband
Figure: experimental setup
The power the power supply was switched on. The generator was zeroed and the sliders of the rotary potentiometer where connected to the input of the operational amplifier. The slider of gain control, potentiometer 1 was set to zero. The pre amplifier was also consequently set to zero. The input dial was slowly rotated clockwise until the response just occurred at the output dial. The angle of
References: Modern Control System by R. Dorf , 12th edition. EE 562 lab manual and EE 561 lecture notes