A Feedback Control System For Engineering Technology Laboratory Courses

Somerville, James McLean; Macia, Narciso F.

doi:10.18260/1-2--9271

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…These changes and affections are called parameter variations (gain and stability, temperature, supply voltage variations and/or external disturbances) where can be studied using mathematical and physical term expressions to illustrate entire control system change. The more keeping prosperities control system with entire changes the lesser sensitivity of control system [1,3]. This paper designs a control circuit to supervise and control the speed response of the DC motor with the virtual instrument graphic monitor software LabVIEW [4].…”

Section: Introductionmentioning

confidence: 99%

Relative stability enhancement for brushed DC motor using a PLL interfaced with LabVIEW

Mahmoud

El-Biomey

Ahmed

2020

IJPEDS

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This work presents a fast response and stable computer based a brushed DC motor speed controller. The controller configured of gate drive circuits for H-Bridge accompanied with data acquisition unit DAQ-6211. These gate drive circuits include, phase comparator, current booster and wave forms cleaning circuits. An optical encoder is used for motor speed to frequency conversion. The CD4046 PLL chip compares phases of the encoder output frequency (motor speed) with a reference frequency (desired speed). The obtained phase difference (error) is used to allocate the suitable PWM duty cycles. An H-Bridge BJT switches driven by PWM is interfaced with the motor. The system hardware is provided with a simple and accurate data acquisition unit DAQ-6211 to be interfaced with the LabVIEW software Package. This allows monitoring and storing the different measured data of this platform. The system relative stability is determined and examined based on the Bode plot analysis and design. Then the relative stability criterion (Phase Margin) is measured the closed-loop stability of the system. This system considers the fast feedback response with indication of its stability state as well as the stable wide dynamic range. It compensates the changes in system parameters due to the environmental effects and other disturbances.

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Section: Introductionmentioning

confidence: 99%

Relative stability enhancement for brushed DC motor using a PLL interfaced with LabVIEW

Mahmoud

El-Biomey

Ahmed

2020

IJPEDS

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“…Ramachandran, Ordonez, Farrell, Gephardt, and Zhang 7 describe several multidisciplinary PID control experiments, including engine speed control, level/flow process control, and DC motor speed control. Somerville & Macia 8 describe the development of a PID control for positioning an air cylinder using classic Zeigler-Nichols tuning rules.…”

Section: Introductionmentioning

confidence: 99%

Using A Fixed Point Digital Signal Processor As A Pid Controller

Murphree¹,

Brzezinski²,

Parker³

2002 Annual Conference Proceedings

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The digital signal processor (DSP) is a tool that has become available for control engineers in recent years. Proportional -integral -derivative (PID) control loops have been standard tools for decades. Combining these two tools provides a flexible and powerful demonstration of control system concepts for undergraduate mechanical engineering students.Undergraduate controls courses have traditionally focused on mathematical analysis, including transfer functions, block diagram manipulation, root locus, frequency response (Bode plots), etc. In recent years a number of computer simulation packages have been developed for control system design. However, there is a continuing need to develop prototype systems to enhance the students' conceptual understanding of difficult materials.The control system described in this paper uses a custom fabricated circuit board built around the Texas Instruments TMS320F243 digital signal processor with all necessary signal conditioning. The DSP control system is accessed through a custom LabVIEWÔ program interface, so students do not need to know any details of the DSP system operation. PID control gains and the sampling time are entered by the student and sent to the DSP through this interface. The DSP system also returns measured output information for plotting and offline analysis. A ball-screw driven by a small DC motor provides a prototype mechanical system. Some details of the linear actuator system, the PID control algorithm, and its implementation on the DSP are provided.

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A Feedback Control System For Engineering Technology Laboratory Courses

Cited by 2 publications

References 3 publications

Relative stability enhancement for brushed DC motor using a PLL interfaced with LabVIEW

Relative stability enhancement for brushed DC motor using a PLL interfaced with LabVIEW

Using A Fixed Point Digital Signal Processor As A Pid Controller

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