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One of the major challenges in industrial process control is to deal with nonlinearities in the plants. There have been a significant amount of research efforts towards design and development of appropriate, reliable and promising control techniques to deployed on real-time industrial applications. Some of the widely used and acknowledged control methods lack in terms of tuning unknown system parameters...
Switch mode power converters otter an efficient solution for driving high-brightness LEDs in an enormous range of applications. These driving converters usually rely on analog control techniques to ensure the optimal flow of current through the LEDs and provide dimming features. However, due to their inflexibility and non-configurability analog control schemes are not a good option especially in high...
Roller element bearing fault diagnosis is crucial in industry to maintain that the machine is in good condition so that there is no delay of work due to machine breakdown. This paper discusses the use of Extreme Learning Machine (ELM) algorithm to classify bearing faults. The performance of ELM is compared with Back Propagation (BP) algorithm. It was found that the results show that the ELM has smaller...
This paper describes a system-level design for an upper limb spasticity part-task trainer driven by clinical data stored in a cloud database. The robotic part-task trainer has been developed for pre-clinical training of medical personnel on the evaluation of upper limb spasticity based on the Modified Ashworth Scale. The cloud-based system enables continuous updating of clinical data of upper limb...
Smart factories of the era of the fourth industrial revolution or Industry 4.0 that employ a completely new approach to production are beginning to emerge. In this context, information and communication technology driven by the Internet of Things, Data and Services play a vital role. To demystify and showcase how a smart factory works, a reference model consisting of a principle solution and a working...
The Predictive PI controller is considered a viable candidate to replace conventional PID for WirelessHART networked control system (WHNCS). This is due to its shared characteristics of simplicity and ease of manual tuning while allowing for mismatches and improved performance even in the presence of stochastic delay. However, in order to avoid excessive overshoots and oscillations due to the stochastic...
Experience Mapping based prediction controller (EMPC)is a newly developed control strategy which has transformed the learning-prediction-adaptation capability of Human motor control (HMC)into engineering world. The control is achieved by forming input-output mapping of the system to be controlled through direct interaction with it in the intended environment. This paper presents the use of EMPC for...
This paper presents a case study of wireless sensor network (WSN) system for remote soil moisture monitoring. The development of this system is driven by the needs for having realtime data collection and remote monitoring access capabilities which are lacking in the conventional soil monitoring techniques. Our proposed system is developed using commercially available IRIS motes based on the IEEE 802...
Speech recognition system has application in many areas such as customer call centers and as a medium in helping those with learning disabilities. There are three main stages in speech recognition which are signal analysis, feature extraction and modeling. Feature extraction plays an important role in speech recognition system and good speech feature extraction technique will allow the systems to...
Thermal Imaging is increasingly being used to study heat coming from the body using specialized infrared cameras that measures temperature. The aim of this study was to determine if skin temperature above the muscle was related to EMG signal of the muscle during certain functions. In this study, six subjects carried out arm movements such as wrist flexion-extension, hand close-open and forearm pronation-supination...
In recent years, the advent of Metal Oxide Semiconductor Field Effect Transistor (MOSFETs) rank as one of the most significant development in power electronics. Its ability to work at high-voltage and high-frequency make MOSFETs become the most important electronic device for many power system circuit. For harsh environment application in example the satellite system, requires the MOSFETs dealing...
This paper presents some features of a multi-link space robot ground testing. The scope of the paper comprises the design of the space robot prototype, the architecture of the active ground testing facility and the integrated control system for the robot and the facility. The space robot prototype has two manipulators, which allow the robot to autonomously “walk” from one spacecraft grapple point...
Impairment of motor function of the lower extremities is a common result of stroke or spinal cord injury due to the harm caused to the spinal column. Rehabilitation using a lower extremity exoskeleton for therapy purposes has been examined to improve motor function of the affected limb. PID controller is the most widely recognized types of feedback controller in control strategy. The simplicity and...
An active walker which can be used by children with walking disabilities is proposed in this paper. The walker is propelled based on the gait intention of the user which is found from user's waist position with respect to the walker. The forward and rotational motion of the walker is decided from the user's gait intention. The hardware implementation of the active walker as well as experimental results...
The aim of this study was to assess the repeatability of the EMED®-A and identify the repeatability of data for different types of measurements (walking without load, walking with load, standing without load, and standing with load). Each load weighing 1.5 kg must be hold at left and right hands. Contact area (CA), maximum force (F), peak pressure (PP) were calculated. In addition, coefficient of...
The Internet of Things (IoT) can reduce manufacturing cost, improve uptime, and help operators gain process insights. In this paper, we develop a system architecture for an IoT-enabled manufacturing system and demonstrate it on a bench-top milling machine. We explore on how we can build such a laboratory-scale system with commonly available, low-cost electronic sensors. Factors for designing such...
An original multi-rotor flying robot (MFR) with six non-planar coaxial rotor pairs is introduced in this paper, compared with the other small rotorcrafts, the corresponding two adjacent face-to-face (F-F) and the back-to-back (B-B) rotor units are proposed as the research component to study the overall performance of the rotorcraft. The main characteristic of this novel configuration is that the attitude...
Proportional-Integral-Derivative (PID) controller is incorporated in Direct-Current (DC) servo motor control application due to its efficiency and ease of implementation. Nevertheless, the existing PID tuning methods are time consuming, and yet expertise and experience are required. Therefore, new approaches to tune PID controller is very important with the aim of obtaining better performances. The...
The aim of this paper is to compare the performance of different kernel of classification support vector machine classification for classifying the physical daily living activities. Thirty subjects from a database performed activities such as walking, sitting, standing, laying, walking upstairs and downstairs. Inertial sensors signals ((accelerometer, gyroscope and magnetometer) from the smartphone...
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