Publications

@conference{Ounis2023b,

title = {Programmable analogue fractional controller realization},

author = {Walid Ounis and Manel Chetoui and Salheddine Najar and Mohamed Aoun},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85182938982\&doi=10.1109%2fIW_MSS59200.2023.10369104\&partnerID=40\&md5=be9f5355e8c0ceea37f41ef5482c9ee6},

doi = {10.1109/IW_MSS59200.2023.10369104},

year  = {2023},

date = {2023-01-01},

journal = {2023 IEEE International Workshop on Mechatronics Systems Supervision, IW_MSS 2023},

abstract = {A fractional-order controller is an infinite-memory system. It is described by a continuous time irrational transfer function. Its realization is a delicate problem especially when its parameters are real time tunable. This paper presents a real-time programmable analogue fractional controller implementation. The controller is based on a sum of a novel real-time programmable analogue first-order low-pass filter. The signal within the circuit remains analogue and is not converted into discrete values. Real-time adjustments are made using digital potentiometers and operational amplifiers. The proposed first-order low-pass filter offers several advantages. In particular, the time constant and DC gain are independently adjusted without relying on the ohmic value of digital potentiometers. The time constant and DC gain depend on the resolution of the digital potentiometers. The high resolution of the digital potentiometer enables the circuit to achieve a wide bandwidth and allows for the use of small capacitors at lower frequencies. The proposed real-time programmable analogue fractional controller is experimented to achieve a fractional integrator. The circuit yields good similarity between theoretical simulations and experimental measurements. © 2023 IEEE.},

keywords = {Analog circuits, Continuous time systems, Controllers, Digital potentiometer, First order, First order low-pass filter, Fractional integrators, Fractional-order controllers, Higher order dynamics systems, Low pass filters, Low-pass filters, Operational amplifiers, Potentiometers (electric measuring instruments), Programmable analog circuit, Programmable analogs, Real- time, Signal processing, Timing circuits},

pubstate = {published},

tppubtype = {conference}

}

@conference{Ounis2023,

title = {Programmable analogue fractional controller realization},

author = {Walid Ounis and Manel Chetoui and Salheddine Najar and Mohamed Aoun},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85182938982\&doi=10.1109%2fIW_MSS59200.2023.10369104\&partnerID=40\&md5=be9f5355e8c0ceea37f41ef5482c9ee6},

doi = {10.1109/IW_MSS59200.2023.10369104},

year  = {2023},

date = {2023-01-01},

journal = {2023 IEEE International Workshop on Mechatronics Systems Supervision, IW_MSS 2023},

abstract = {A fractional-order controller is an infinite-memory system. It is described by a continuous time irrational transfer function. Its realization is a delicate problem especially when its parameters are real time tunable. This paper presents a real-time programmable analogue fractional controller implementation. The controller is based on a sum of a novel real-time programmable analogue first-order low-pass filter. The signal within the circuit remains analogue and is not converted into discrete values. Real-time adjustments are made using digital potentiometers and operational amplifiers. The proposed first-order low-pass filter offers several advantages. In particular, the time constant and DC gain are independently adjusted without relying on the ohmic value of digital potentiometers. The time constant and DC gain depend on the resolution of the digital potentiometers. The high resolution of the digital potentiometer enables the circuit to achieve a wide bandwidth and allows for the use of small capacitors at lower frequencies. The proposed real-time programmable analogue fractional controller is experimented to achieve a fractional integrator. The circuit yields good similarity between theoretical simulations and experimental measurements. © 2023 IEEE.},

keywords = {Analog circuits, Continuous time systems, Controllers, Digital potentiometer, First order, First order low-pass filter, Fractional integrators, Fractional-order controllers, Higher order dynamics systems, Low pass filters, Low-pass filters, Operational amplifiers, Potentiometers (electric measuring instruments), Programmable analog circuit, Programmable analogs, Real- time, Signal processing, Timing circuits},

pubstate = {published},

tppubtype = {conference}

}

@conference{Walid2022798b,

title = {REAL TIME TUNEABLE ANALOGUE PID CONTROLLER REALIZATION},

author = {Ounis Walid and Najar Slaheddine and Aoun Mohamed},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85143839075\&doi=10.1109%2fSSD54932.2022.9955819\&partnerID=40\&md5=210dc688fb0012ad85e5775fbad65fb2},

doi = {10.1109/SSD54932.2022.9955819},

year  = {2022},

date = {2022-01-01},

journal = {2022 19th IEEE International Multi-Conference on Systems, Signals and Devices, SSD 2022},

pages = {798 \textendash 803},

abstract = {This paper proposes a real time tunable analogue PID controller realisation witch can be used as a conventional PID, an adaptative PID or an intelligent PID 'iPID'. The integral and derivative of the PID input signal are continuous time signals and never sampled. This avoid discretization issues such as aliasing phenomena and the critical sampling period choice. The operative PID circuit part is totally analogue. Few digital potentiometers and digital switches are used. This allows to tune the parameters values of the controller and select PI, PD, PID configuration. The analogue circuit part is designed with a new original circuit architecture. A prototype of the circuit is implemented. Experimentation results show good similarity to the theoretical simulations. © 2022 IEEE.},

note = {Cited by: 0},

keywords = {Analog realization, Continuous time systems, Controller realization, Controllers, Discretization issue, Discretizations, Electric control equipment, PID controllers, Proportional control systems, Real- time, Three term control systems, Tunable analog PID, Tunable controller, Tunables, Voltage dividers},

pubstate = {published},

tppubtype = {conference}

}

@conference{Walid2022798,

title = {REAL TIME TUNEABLE ANALOGUE PID CONTROLLER REALIZATION},

author = {Ounis Walid and Najar Slaheddine and Aoun Mohamed},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85143839075\&doi=10.1109%2fSSD54932.2022.9955819\&partnerID=40\&md5=210dc688fb0012ad85e5775fbad65fb2},

doi = {10.1109/SSD54932.2022.9955819},

year  = {2022},

date = {2022-01-01},

journal = {2022 19th IEEE International Multi-Conference on Systems, Signals and Devices, SSD 2022},

pages = {798 \textendash 803},

abstract = {This paper proposes a real time tunable analogue PID controller realisation witch can be used as a conventional PID, an adaptative PID or an intelligent PID 'iPID'. The integral and derivative of the PID input signal are continuous time signals and never sampled. This avoid discretization issues such as aliasing phenomena and the critical sampling period choice. The operative PID circuit part is totally analogue. Few digital potentiometers and digital switches are used. This allows to tune the parameters values of the controller and select PI, PD, PID configuration. The analogue circuit part is designed with a new original circuit architecture. A prototype of the circuit is implemented. Experimentation results show good similarity to the theoretical simulations. © 2022 IEEE.},

note = {Cited by: 0},

keywords = {Analog realization, Continuous time systems, Controller realization, Controllers, Discretization issue, Discretizations, Electric control equipment, PID controllers, Proportional control systems, Real- time, Three term control systems, Tunable analog PID, Tunable controller, Tunables, Voltage dividers},

pubstate = {published},

tppubtype = {conference}

}