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This paper presents the performance of proportional-integral-derivative (PID) controller and Model Reference Adaptive Controller (MRAC) on regulating essential oil extraction process. The quality of essential oil will reduce if the extraction process expose to overheating of temperature. AutoRegressive with Exogenous Input (ARX) model represent as heating process plant. Heating process is important...
This study discuss the design of a Fuzzy logic controller (FLC) that has carried out to control the steam temperature. The extraction temperature is considered as the most significant parameter that contributes to the amount of output yield and quality of oil. The objective of this research is to carry out the ARX model structure with the input PRBS to design and simulate the process control of steam...
Conventional steam distillation is lack of control in order to satisfy the process requirement. In steam distillation process is regarded as the most significant parameter that contributes to the amount of output yield and quality of oil. An appropriate controller needs to integrate to the plant in order to regulate the steam temperature at desired or appropriate condition. This study demonstrated...
This paper present the implementation of step test in analysing the dynamic behaviour of hydro-diffusion system. Step test will provide sufficient information in order to determine the characteristics of transient performance such as gain, time constant and time delay. From the fitted voltage-temperature calibration curve, this system used the second order polynomial based on R2, RMSE and SSE. The...
In extracting the essential oils, some of the influential factors need to be considered which can affect the yield and quality of the oils. Many studies have performed on several influential parameters and dictated that the temperature of extraction plays an important parameter that can give large effect on yield and quality. In order to regulate the temperature, a suitable controller is required...
In steam distillation process, temperature is regarded as the most significant parameter that contributes to the amount of output yield and quality of oil. Recently, most of steam distillation system use open loop system to control temperature while is done manually by skilful operators. It is well known that open loop system is sensitive to the parameter variations and disturbances. The hybrid fuzzy...
The hybrid fuzzy plus PID (HF+PID) controller using 3, 5 and 7 membership functions was implemented in hydro-diffusion essential oil extraction system. This controller was designed to regulate the steam temperature during extraction process for the purpose to achieve the desired target. In the extraction process, the temperature is very important variable that gives largest effect to the percentage...
This paper presents the comparative studies between hybrid fuzzy plus PID with different membership function and PID controller. The purposed in designing controller is to regulate the steam temperature to the operating point in order to achieve some objectives such as stability, transient performances and optimizes the economic function. The steam temperature has the great impact on the quality of...
The steam temperature during the extraction process have a great influence on the essential oil quality. Lately, many of the research efforts are seen trying to develop a new control technique to regulate the steam temperature. However, PID is noted to have a simple structure, very straight forward implementation and ease to handle especially when deal with the industrial process. But, the challenges...
Fuzzy model reference learning control (FMRLC), a model based controller, was implemented in steam distillation extraction oil process. The FMRLC was designed to regulate steam temperature inside the distillation column during extraction process. Maintaining the temperature to a certain degree for the period of extraction process is very important because the temperature will influence the output...
Steam temperature is well known as one significant parameter in process of extraction essential oil that can contribute to increase the output yield and quality of the product. In this study, induction heating system was adopted in steam distillation pot to replace the conventional heating element. Induction heating system was preferred is due to high efficient, clean and save energy. In term of temperature...
This paper present the implementation of real time PID controller for hydro-diffusion steam distillation essential oil extraction system based on comparison of Gradient Descent (GD) and Ziegler Nichols (ZN) tuning methods. The first order of Auto Regressive Exogenous (ARX) model was used to describe the behavior of the temperature system and will be use in the controller design. A PID controller is...
This paper present a autoregressive with exogenous input (ARX) was applied in modelling of steam distillation pot system. The system of steam distillation pot are design with special specification interm of material and shape additional with induction heating system that provide a new technologies in extraction of essential oil to fullfill demand for this industry. The performance of ARX was investigates...
This paper presents an investigation of ARX model on input-output data from heating process in a hydro-diffusion steam distillation essential oil extraction system. Two sets of data under feed-in disturbance were collected based on PRBS perturbation. The study was performed by applying system identification and it was carried out by using four general stages; experimental work to collect input-output...
This paper presents an application of the Particle Swarm Optimization (PSO) algorithm to perform lag space selection for a Multi-Layer Perceptron (MLP)-based Non-Linear Autoregressive Model with Exogenous Inputs (NARX) model of a down-flowing steam distillation system. PSO represents each candidate lag space as integer values. These candidate lag spaces were then used to construct the training data,...
This paper presents a logical continuation of our work by proposing the utilizing of ARX model by using pseudorandom binary sequence (PRBS) as the input signal and temperature as an output. The down-flowing steam distillation column developed in this work is intended for extracting the essential oil by steam distillation technique to improve the quality of output yield and get high quantity of essential...
This paper present a model predictive control (MPC) that was proposed to implement at plant steam distillation pot with induction heating system. By using the ARX model structure, the model predictive control was design to control of steam temperature. Since the steam temperature play important role during the extraction of essential oil, important to researcher to find the control technique to optimize...
This paper presents an application of step test in analysing the characterization and to observe the dynamics of new system which is down-flowing steam distillation system. Steam temperature data were collected in two condition: (a) without sample in the steam tray, (b) with sample in the steam tray-Cymbopogon Nardus (serai wangi). The down-flowing steam distillation column developed in this work...
This paper presents a new method to model a steam temperature in distillation system by using system identification. Three nonlinear models have been compared, i.e. a Hammerstein model, a Wiener model and a Hammerstein-Wiener model. In this work, we propose the utilizing of the piecewise-linear and sigmoid network Hammerstein-Wiener model for single-input single output processes. All the models have...
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