Practical Positioning Control Of A One Mass Rotary System

One mass rotary system, is a mechanism that commonly used in industries. Hence for this research, a robust and practical controller design for a one mass rotary system is discussed. The controller is designed and improved based on the conventional structure of the Nominal Characteristic Trajectory Following (NCTF) controller. The continuous motion NCTF (CM-NCTF) controller is proposed for a point to point (PTP) positioning system. The CM-NCTF controller comprising a nominal characteristic trajectory (NCT) and the proportional integral (PI) compensator element. It is designed without knowing the exact model and parameters of the system. The design procedure is applicable, easy to understand and has a simple controller structure. The NCT is constructed from open loop experiment responses while PI compensator is designed experimentally based on the system stability graph.The effectiveness of the proposed controller in positioning and tracking control performance is evaluated experimentally. The experiment was done using various input to examine the controller performance towards parameter variation. While, the controller robustness is evaluated by applying different load into the system to examine system sensitivity towards the disturbance. Then, the effect of positioning, tracking and robustness are compared to the PID and the conventional NCTF controllers. The CMNCTF controller demonstrates good positioning response by having less steady state error, shorter settling time and also small or zero overshoot in comparison to the PID controller. Besides, the CM-NCTF controller performs better tracking control performance when various input frequencies are applied to the system. The proposed controller is proved to have a good positioning, smoother tracking and less sensitivity towards the disturbance. In conclusion, the CM-NCTF controller is more accurate and robust than the PID controller

Annotated Bibliography on Knowledge Bases

Annotated Bibliography on Knowledge Base

Practical Controller Design For Ultra-Precision Positioning Of Stages With A Pneumatic Artificial Muscle Actuator

This paper presents a practical controller design method for ultraprecision positioning of pneumatic artificial muscle actuator stages. Pneumatic artificial muscle (PAM) actuators are safe to use and have numerous advantages which have brought these actuators to wide applications. However, PAM exhibits strong non-linear characteristics, and these limitations lead to low controllability and limit its application. In practice, the non-linear characteristics of PAM mechanism are difficult to be precisely modeled, and time consuming to model them accurately. The purpose of the present study is to clarify a practical controller design method that emphasizes a simple design procedure that does not acquire plants parameters modeling, and yet is able to demonstrate ultraprecision positioning performance for a PAM driven stage. The practical control approach adopts continuous motion nominal characteristic trajectory following (CM NCTF) control as the feedback controller. The constructed PAM driven stage is in low damping characteristic and causes severe residual vibration that deteriorates motion accuracy of the system. Therefore, the idea to increase the damping characteristic by having an acceleration feedback compensation to the plant has been proposed. The effectiveness of the proposed controller was verified experimentally and compared with a classical PI controller in point-topoint motion. The experiment results proved that the CM NCTF controller demonstrates better positioning performance in smaller motion error than the PI controller. Overall, the CM NCTF controller has successfully to reduce motion error to 3µm, which is 88.7% smaller than the PI controlle

Development Of Mini Wind Turbine Generator

Most of the electricity generation process in Malaysia using fuel sources especially coal and natural gasses. The country needs to spend higher cost to import this source since it is not a natural resource in Malaysia. In addition, the usage of coal as resources affected the environment. The extinction of this source also needs to be considered since it is not a renewable energy sources. Therefore, a prototype of mini wind turbine generator is proposed in this research in order to study the effectiveness of this type of generator since it is one of the alternatives to generate electricity. It is developed in Archimedes design by using microcontroller. The performance is evaluated by analyzing the blade material, number of blades and the environment influence on the location of wind turbine generator.The results show that the blade made from acrylic with lowest number of blades produced higher voltage and current while the location of the designed prototype at high hill area generate higher value of voltage and current compared to the beach and field are

Squirrel Cage Induction Motor Scalar Control Constant V/F Analysis

In constant V/f control technique it is assume that the stator resistance and leakage inductance drops are negligible, especially at high speed and small load. In other words, the back emf is comparatively large at high speed and hence these voltage drops can be neglected. By maintaining constant V/f, constant Eg/f and hence constant air-gap flux is assumed. This assumption is however invalid at low speeds since a significant voltage drop appears across the stator impedance. The terminal voltage, V no longer approximates ag. By using MATLAB Simulink, the open-loop constant V/f is simulated. It is shown that the performance of the drive deteriorates at low speeds. The improvement in the performance by applying voltage boost is shown and discussed

Development Of Mini Generator Based On Wind Turbine Principle

Shortage of resources to generate electricity is one of the big issues nowadays. Recently, in Malaysia, electricity is generated from fossil fuels and water flow pressure. However, fossil fuels are facing extinction problem due to the limited production of these sources while flow pressure water also has limitation to supply electrical energy to the residents. Besides, the usage of fossil as energy resources affect the environment. Thus, this research proposed a mini wind turbine as an alternative source to generate electricity for consumer daily usage. The designed generator is developed with a different number of blades and the operation is implemented by using Arduino. The analysis of the effectiveness of the designed system is measured through different evaluation of produced voltage based on a different number of fan blades and wind speed. The result shows that for ideal and simple wind turbine structure, the increment of rotational speed produced higher voltage and current. Thus, the system can be used as an alternative source of electrical generator for a small-scale individual user

Development Of Automatic Poultry System (Quails) Using Arduino Microcontroller

The main purpose of the development of automatic poultry system (quails) using Arduino microcontroller. Quail farmers face problem to maintain or increase their livestock due to high mortality rates during the changes of quail growth phase. The mortality rates mainly affected by uncontrolled climate change of the environment. Therefore, this project is developed to helps broiler quail farmers to maintain their livestock with less supervision from them. At the same time, ensuring stable growth rates and reducing the mortality rates affected from uncontrolled climate/environment factor which is temperature, surround air quality, and intensity of lights is the main focus of this project. In controlling the temperature, air quality, and intensity of light, the DHT11 humidity and temperature sensor, MQ135 air quality sensor, and TSL 2561 digital luminosity (lux) sensor used in this project along with Arduino microcontroller to maintain and control those climate/environment factor at specific range of parameters so that it satisfies with quail growing phases. As the result, it shows that by implement this project can increase performance growth and reduce the mortality rates of the quail compare to conventional method. The retrieved data from the project prototype system and actual experiment is then been analyze, evaluate and kept for further improvement

Analysis of Light Bulb Temperature Control for Egg Incubator Design

This paper explained the analysis and findings of using light bulb as a thermal source for an incubator system. The inner dimension of the incubator is 26 cm (W) x 38 cm (L) x 26 cm (H). In the experiment, a temperature sensor that measures the inside temperature of the incubator used as a feedback signal. To run the experiments, number of light bulbs and its type were determined. There are three types of bulb used i.e. Incandescent Light (IL Bulb), Compact Fluorescent Lamp (CFL Bulb) and Light Emitting Diode (LED Bulb).  Three fixtures are proposed for each bulb type, i.e. one-bulb fixture, two-bulb fixture and three-bulb fixture. Apart from that, three control modes were tested, i.e. Mode 1, Mode 2 and Mode 3. Mode 1 is ON-OFF bulb control. Mode 2 is ON-OFF bulb control, as well as ON-OFF ventilation fan control. Finally, Mode 3 is only ON bulb control and ON-OFF ventilation fans The experimental results showed that, for the chosen incubator size, three-bulb fixture IL-type light bulb controlled with Mode 3 control gave shorter time to reach the set point then return to set point after overshoot

Optimization Of Round Shape Portable Vacuum Clamping Based On Machining Parameters

The aim of this project is to optimize the round shape portable vacuum clamping based on machining parameters. The selected machining parameter is spindle speed, depth of cut and feed rate. The vacuum clamping was tested to evaluate and analyse the result of surface roughness and time setting. The result shows that the portable round shape vacuum clamping is the best clamping system compare with conventional vise in term of setup time. The time is taken for setting the workpiece on the clamping device for vacuum clamping is 13.6 seconds which is faster than conventional vise 54.7 seconds. For surface roughness, the smooth surface is 1.627 µm at 910 RPM of spindle speed. 910 RPM spindle speed is most suitable for machining 0.5mm depth of cut on portable round shape vacuum clampin

Location Tracking Using LoRa

Local area network (LAN) as Bluetooth, WiFi and ZigBee are well established technology. The biggest problem with many LAN is the battery consumption and short ranges link budgets. LoRa is a new, private, unlicensed and spread spectrum modulation technique which allows sending low rates at extremely long ranges with minimal power consumption. More importantly, there is no access fee associated with this type of wireless technology. The main idea behind this work is to conduct performance and capability analysis of a currently available LoRa transceiver. We develop a location monitoring system using LoRa and global positioning system (GPS) module and we analyze the detectable range of its data, its battery consumption as well as received signal strength indicator (RSSI). Our deployment experiment demonstrates that the system is able to detect the transmitted data within 290 meters of distances. Using 6 volts of battery AA, the transmission of data still occurred after 24 hours. This project is emphasized a location monitoring system that provide low power usage but long range