scholarly journals Evaluation of SIPIC01 and SIPIC02 on Motor Speed Control

2018 ◽  
Vol 152 ◽  
pp. 02010
Author(s):  
Kah Kit Wong ◽  
Choon Lih Hoo ◽  
Mohd Hardie Hidayat Mohyi
Keyword(s):  
Control System ◽  
Steady State ◽  
Dynamic Performance ◽  
Pi Controller ◽  
Settling Time ◽  
Motor Speed ◽  
Proportional Integral ◽  
Integral Controller ◽  
Proportional Integral Controller ◽  
Decoupling Effect

Due to its simplicity, Proportional-Integral (PI) controller still remains as the widely used controller for motor speed control system. However, PI controller exhibits windup phenomenon when the motor operates in a saturated state, which may cause degradation to the control system. In order to overcome the windup phenomenon, many researches have introduced various types of anti-windup methods such as the Conditioning Technique (CI), Tracking Back Calculation (TBC), Integral State Prediction (ISP), Steady-state Integral Proportional Integral Controller-01 (SIPIC01) and Steady-state Integral Proportional Integral Controller-02 (SIPIC02). These are anti-windup techniques with integral control switching mechanism, coupling of proportional gain, kp, and integral gain, ki. Due to the coupled kp and ki, tuning motor performance is a difficult task with short settling time without experiencing overshoot. SIPIC01 and SIPIC02 are robust anti-windup methods without a switching mechanism and exhibit decoupling feature. SIPIC01 and SIPIC02 have shown better dynamic performance compared to CI, TBC and ISP. However, SIPIC01 has not been compared to SIPIC02 in terms of their decoupling effect flexibility and dynamic performance. The decoupling effect was verified using MATLAB simulation, while the performance analysis was verified through hardware simulation and testing by using Scilab. The results obtained from the simulation showed that both SIPIC01 and SIPIC02 consist of decoupling features that allow a performance with coexistence of zero or minimum overshoot with short settling time. However, SIPIC02 consists of longer rise and settling time as compared to SIPIC01. Therefore, it can be concluded that SIPIC01 is better than SIPIC02 in term of dynamic performance.

scholarly journals Steady-State Integral Proportional Integral Controller for PI Motor Speed Controllers

2015 ◽  
Vol 15 (1) ◽  
pp. 177-189 ◽  
Author(s):  
Choon Lih Hoo ◽  
Sallehuddin Mohamed Haris ◽  
Edwin Chin Yau Chung ◽  
Nik Abdullah Nik Mohamed
Keyword(s):  
Steady State ◽  
Motor Speed ◽  
Proportional Integral ◽  
Integral Controller ◽  
Proportional Integral Controller

scholarly journals Daytime/Nighttime Event-Based PI Control for the pH of a Microalgae Raceway Reactor

Processes ◽  
2019 ◽  
Vol 7 (5) ◽  
pp. 247 ◽  
Author(s):  
Enrique Rodríguez-Miranda ◽  
Manuel Beschi ◽  
José Luis Guzmán ◽  
Manuel Berenguel ◽  
Antonio Visioli
Keyword(s):  
Control Strategy ◽  
Pi Controller ◽  
Process Approach ◽  
Pi Control ◽  
Proportional Integral ◽  
Gas Consumption ◽  
Integral Controller ◽  
Proportional Integral Controller ◽  
Raceway Reactor ◽  
Event Based

In this paper, a new solution to improve the traditional control operation of raceway microalgae reactors is presented. The control strategy is based on an event-based method that can be easily coupled to a classical time-driven proportional-integral controller, simplifying the design process approach. The results of a standard Proportional-Integral (PI) controller, as well as of two event-based architectures, are presented in simulation and compared with each other and with traditional On/Off control. It is demonstrated that the event-based PI controller—operating during the whole day instead of only during daytime—achieves a better performance by reducing the actuator effort and saving costs related to gas consumption.

scholarly journals A biomolecular proportional integral controller based on feedback regulations of protein level and activity

2018 ◽  
Vol 5 (2) ◽  
pp. 171966 ◽  
Author(s):  
Francis Mairet
Keyword(s):  
Redox Regulation ◽  
Feedback System ◽  
Pi Controller ◽  
Ammonium Uptake ◽  
Proportional Integral ◽  
Perfect Adaptation ◽  
Classical Integral ◽  
Integral Controller ◽  
Proportional Integral Controller ◽  
Living Organisms

Homeostasis is the capacity of living organisms to keep internal conditions regulated at a constant level, despite environmental fluctuations. Integral feedback control is known to play a key role in this behaviour. Here, I show that a feedback system involving transcriptional and post-translational regulations of the same executor protein acts as a proportional integral (PI) controller, leading to enhanced transient performances in comparison with a classical integral loop. Such a biomolecular controller—which I call a level and activity-PI controller (LA-PI)—is involved in the regulation of ammonium uptake by Escherichia coli through the transporter AmtB. The P II molecules, which reflect the nitrogen status of the cell, inhibit both the production of AmtB and its activity (via the NtrB-NtrC system and the formation of a complex with GlnK, respectively). Other examples of LA-PI controller include copper and zinc transporters, and the redox regulation in photosynthesis. This scheme has thus emerged through evolution in many biological systems, surely because of the benefits it offers in terms of performances (rapid and perfect adaptation) and economy (protein production according to needs).

scholarly journals Anti-windup PI controller, SIPIC For Motor Position Control

2018 ◽  
Vol 152 ◽  
pp. 02022
Author(s):  
Kah Kit Wong ◽  
Choon Lih Hoo ◽  
Mohd Hardie Hidayat Mohyi
Keyword(s):  
Control System ◽  
Rise Time ◽  
Pid Controller ◽  
Position Control ◽  
Pi Controller ◽  
Settling Time ◽  
Motor Speed ◽  
New Type ◽  
Stable Performance ◽  
Control Application

Control system plays a major role in the industry nowadays as it simplifies workload and reduce manpower. Among all the controlled applicable field, control system is heavily used in motor speed and motor position controls. Although there are various types of controllers available in the market, PID controller remains as one of the most used controller due to its simplicity. Unfortunately, PID controller experiences windup phenomenon which affects the controller’s performance. This paper proposes a new type of anti-windup PI controller, SIPIC for motor position control application and aims to validate the performance of this controller as compared to conventional PI controller. To test the ability of the controllers, both controllers were experimented using hardware testing. The settings conditions of with and without loadings were used under two different inputs of 0° to 90° and 270° to 90°. The results obtained show that under without loadings, both controller showed favourable performances. Though, SIPIC controller slightly outperforms PI controller by having lower overshoot and shorter settling time for a wider range of gains. The rise time of both controllers are similar as it is the lowest possible rise time due to hardware limitations. Experiment results with loading condition, for both inputs and when Kp is 1 and Ki is 15, PI controller shows unstable performance by having large amount of oscillations and overshoots. The settling time was unable to be determined as the controller did not settle within the given step time. On the other hand, at the same gain, SIPIC controller still shows acceptable performance. This shows that SIPIC controller is more favourable by having better stable performance for a wider range of gains while PI controller needs to be finely tuned to a specific gain to obtain desired results..

A Winch Reference Control System for Semi-Pelagic Triple Trawling: With Full-Scale Sea Trials

2017 ◽  
Author(s):  
Joakim Haugen ◽  
Eduardo Grimaldo ◽  
Svein H. Gjøsund
Keyword(s):  
Control System ◽  
Full Scale ◽  
Contact Forces ◽  
Bottom Trawling ◽  
Sea Trial ◽  
Proportional Integral ◽  
Shrimp Trawl ◽  
Integral Controller ◽  
Proportional Integral Controller ◽  
Fuel Costs

Multi-rig bottom trawling can negatively impact the seabed, and the bottom contact forces contribute to the total towing resistance. Lifting the doors from the seabed can reduce some of the trawl gear’s influence on the seabed and save fuel costs. In this study we evaluated a simple reference controller designed to control a trawl door’s distance from the seabed. This was achieved by providing desired warp lengths to a controller, which then regulated the distance via a low-pressure hydraulic winch. The reference controller algorithm uses an anti-windup proportional-integral controller with saturation of winch acceleration and speed. Herein, we present results of a full-scale sea trial conducted using a triple shrimp trawl with trawl doors towed close to the seabed. Our results demonstrate the feasibility of controlling the trawl doors’ altitude above the seabed using only winch-actuated feedback.

scholarly journals Current PIλ Control of the Single-Phase Grid Inverter

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Xueqin Yang ◽  
Xingyu Liu ◽  
Jichao Li ◽  
Binbin Zhang
Keyword(s):  
Control System ◽  
Steady State ◽  
Fractional Order ◽  
Single Phase ◽  
Dynamic Performance ◽  
Harmonic Distortion ◽  
Pi Controller ◽  
Fractional Order Pi Controller ◽  
Control System Model ◽  
Steady State Performance

In a grid-connected power generation system, the grid-connected current of the inverter is sensitive to nonlinear factors such as periodic disturbance of grid voltage, which results in grid-connected current waveform distortion. By establishing a single-phase photovoltaic grid-connected inverter control system model, designing an inverse current fractional-order PI (PIλ or FO-PI) controller and the dynamic and steady-state performance, antidisturbance and grid connection inversion characteristics of the system are simulated and compared under the action of the integer-order PI controller and fractional-order PI controller. The quality of the inverter grid-connected current is analyzed by using the fast Fourier transform (FFT). The simulation results show that the fractional-order control system can reduce the total harmonic distortion (THD) of the grid-connected current and dynamic performance and antidisturbance ability of the improving system while satisfying the steady-state performance indexes.

scholarly journals Dynamics of Speed Control of Dc Motor using Combine Armature and Field Control with Pi Controller

2020 ◽  
Vol 9 (3) ◽  
pp. 3585-3591
Keyword(s):  
Speed Control ◽  
Dc Motor ◽  
Joint Control ◽  
Motor Speed ◽  
Proportional Integral ◽  
Variable Voltage ◽  
Control Schemes ◽  
Integral Controller ◽  
Proportional Integral Controller ◽  
Nonlinear Joint

This work examines the intrigues associated with the speed control of DC motor by nonlinear joint control of the voltage of the armature cum the field current in conjunction with the proportional integral controller. In the case of controlling the armature, the field current component is kept constant while the armature in contained with variable voltage. However, in the case of controlling the field, the voltage of the armature is kept constant while the field contends with a variable voltage. Both the field and the control of armature were used to acquire a DC motor speed control enhancement which offers a stability of the system. The proportional integral (PI) is for the purpose of extension for identification of better alternative. As consideration is given to the electrical, electromagnetic and the motional or mechanical arrangements, a model is developed for the separately excited DC motor (SEDM) which is mathematically analyzed. The originating models of the DC motor speed control schemes are simulated with the help of MATLAB/Simulink. The results obtained herein would be very useful for the control and process engineering oufits

Fuzzy Gain-Scheduling Proportional–Integral control for Improving the speed behavior of a three-phases induction motor

2016 ◽  
Vol 7 (4) ◽  
pp. 1161
Author(s):  
Hichem Othmani ◽  
D. Mezghani ◽  
A. Mami
Keyword(s):  
Transfer Function ◽  
Induction Machine ◽  
Gain Scheduling ◽  
Pi Controller ◽  
Integral Control ◽  
Proportional Integral ◽  
Integral Controller ◽  
Proportional Integral Controller ◽  
Proportional Integral Control ◽  
Set Up

In this article, we have set up a vector control law of induction machine where we tried different type of speed controllers. Our control strategy is of type Field Orientated Control (FOC). In this structure we designed a Fuzzy Gain-Scheduling Proportional–Integral (Pi) controller to obtain best result regarding the speed of induction machine. At the beginning we designed a Pi controller with fixed parameters. We came up to these parameters by identifying the transfer function of this controller to that of Broïda (second order transfer function). Then we designed a fuzzy logic (FL) controller. Based on simulation results, we highlight the performances of each controller. To improve the speed behaviour of the induction machine, we have designend a controller called “Fuzzy Gain-Scheduling Proportional–Integral controller” (FGS-PI controller) which inherited the pros of the aforementioned controllers. The simulation result of this controller will strengthen its performances.

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