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Sensorless and torque control of Switched Reluctance Motors (SRMs) is a well-researched field. Many techniques rely on the measurement of phase inductance and or flux-linkage which can be significantly affected by the mutual phase inductance. By measuring the mutual inductance over an electrical cycle or at particular locations, the accuracy of the sensorless and torque control techniques can be improved...
Model predictive control (MPC) is a popular advanced model-based control algorithm for controlling systems that must respect a set of system constraints (e.g. actuator force limitations). However, the computing requirements of MPC limits the suitability of deploying its software implementation into embedded controllers requiring high update rates. This paper presents a scalable embedded MPC controller...
The use of robots is becoming more common in society. Industrial robots are being developed to work with people, and lower-force collaborative robots are being developed to help people in their everyday lives. These may need fast and sophisticated motion control and behavioral algorithms, but are expected to be more compact and lower cost. This paper proposes a processor plus FPGA solution for the...
Switch mode Converters are inherent part of modern gadgets, motor drives and power control. To regulate the output voltage, an efficient control is necessary. Digital control is preferred over analog control since it has advantages like low power consumption, less variation to noise, less component variation and programmability. There are various platforms available for control like Microcontroller,...
The paper describes step by step the process of constructing and testing real-time tool for analysis of a bidirectional Buck-Boost converter supplying a Permanent Magnet Synchronous Machine (PMSM), as a traction motor for light electric vehicles. This converter was developed to be used as a controlled energy transfer equipment between the main energy source of a battery and an auxiliary ultracapacitor...
The paper details an advanced analysis of a Permanent Magnet Synchronous Machine, as traction motor for light electric vehicles. The focus of the paper is to create a real-time model in the loop (RTMiL) simulator based on Field Programmable Gate Array (FPGA). By this, the gap between the simulated models and the behavior of the real machine and its converter is diminished. The machine with its electronic...
Motor control applications using small fast-spinning motors such as e-turbos, UAVs, surgical instruments and high-speed pumps, and the advent of SiC and GaN switching transistors, are driving a need for compact drives with high-frequency control loop updates. This paper describes a multi-axis motor and power control platform suitable for academic or commercial research and development. It includes...
This paper details on an advanced analysis of a Variable Reluctance Machine, designed to be used for light electric vehicle propulsion. The goal is to setup a Field Programmable Gate Array (FPGA) based Processor-in-the-Loop simulation test bench for the proposed machine, in such way, that emulates the real machine and control unit as close as possible. Hence, two FPGAs are used, one running the Field...
The mini UAV systems design, from the electronic hardware point of view, implies stronger limitations to weight and power consumption. In the case of non-homogenous architecture and different algorithms, we can use a single processor unit like PC or ARM. But in the case of complex algorithm with great amount of data coming from sensors, there is a great problem with stability and real time responses...
In this paper it has been structure an Artificial Neural Network ANN into a FPGA card using the Description and Modeling Language for VHDL circuits, with the purpose of designing a Programmable Logic controller. Besides the backpropagation learning algorithm was incorporated using Matlab, for the training of the ANN, and a communication system that allows to transfer the functioning conditions to...
Controlling an induction machine has been a difficult task since its invention, especially at low speed operation and during highly dynamic regimes, where the required torque/speed changes constantly. This paper aims to present the validation and implementation of a deadbeat direct torque and flux control scheme (DB-DTFC) for induction machines on a multilevel platform consisting on an FPGA, a real...
Nanopositioning is a key factor for a wide range of applications, such as surface imaging and ultra-high-density probe-based data storage. These applications use scanning probes in order to sense and alter the properties of the underlying medium with nanoscale precision. Recently, new scanning schemes were introduced that can lead to high-speed nanopositioning, if their inherent properties are properly...
In micro- and nanorobotics, it is important to increase closed-loop performance to achieve high-throughput for industrial applications. By using dedicated line scans instead of scanning microscope image acquisition, bottlenecks such as limited update rate, long latency and unpredictable jitter can be overcome. Earlier experiments used the line-scan approach for visual servoing of a custom made mobile...
Project based workshop on LED dimmer control with FPGA development kit, is aimed to increase practical skills for engineering students. Workshop consists of lectures and various laboratory works, which implements widely used industry tasks as examples, like indication with 7 segment display, serial communication, and specific timer module for PWM generation and proportional regulator for power converter...
Despite the numerous advantages reconfigurable computing adds to a system, it is only advantageous if the execution time exceeds the configuration time. As a result of the long configuration time, reconfiguration is only suitable for quasi-static applications. Due to the additional overhead required for communication, the bus-based architectures most commonly used to connect the configuration controller...
Traditional avionics control bus is neither portable nor scalable. The quantity of electronic devices in aircraft is expanding at an exponential rate. How to connect those devices together by a light, fast, scalable bus is a very urgent task. In this paper, we propose a new design and an application of new avionics control bus which combines the advantages of the SPI and FPGA IP-Core. Firstly, the...
This is a design of a stable and reliable control and drive system of IGBT, according to the requirement of the dynamic harmonic filter. This design is centrally controlled by a 89C52 MCU and it mainly consists of 89C52 MCU, FPGA, touch screen, alarm circuit, drive and protection circuit, intelligent electrical energy sensor. It has main functions of collection of harmonic parameters of the power...
This paper proposes a validation methodology for implementing solutions to challenges involved with power electronic converter design. Typically, the design process consists of first simulating the converter and then implementing it on hardware. Here, an intermediate step is added where the controller is connected to a real-time simulator before being connected to real hardware. This allows for virtual...
In this work, we investigate in a Hardware-in-the-Loop (HiL) approach to solve the problems and opportunities created by the control of large numbers (hundreds to thousands) of MEMS sensors and actuators. Using HiL simulation, one or several devices of the system are used instead of their simulated models. HiL simulation is supposed to achieve a highly realistic simulation of equipment in an operational...
Direct voltage can be converted to alternating voltage (and vice versa) with an inverter. The control of the inverter is based on the control of power switches and the usage of a suitable modulation method. The control of the inverter is proposed to be done in an FPGA circuit that allows quick parallel calculation. Because of the architecture of the FPGA circuits, the sufficient byte length of the...
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