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In this paper the design of control law to calculate width of PWM pulse to generate the desire output voltage is described. Design of hardware and control law is carried out by considering 100 Watt application(load). This design is carried out with state space variable using digital control technique. Digital controlier is design using pole placement technique to achive desire transient response....
The design of embedded control systems is rapidly change during the last decade. Guaranteeing the safety of these systems is a very challenging topic. It is possible to identify two main factors that are involved in the control of those systems: Hardware/Software (HW-SW) codesign and dynamic reconfiguration. Furthermore, the use of an embedded operating system associated with a functional module library...
Boost converter with high power has turned into the key part of the power framework that enables power to be completely used. The novel way to accomplish a decreased current ripple and voltage ripple for dc chopper is actualized. Typical boost converter is interleaved to stop high input current stress on the switches. Interleaved Dual Boost Converter has two boost converter worked in parallel and...
In comparison with conventional two level converters, multilevel converters present lower switching losses, lower voltage stress on switching devices, lower common-mode voltages and better harmonic performance. Due to these remarkable features, nowadays the application of this technology covers a wide range, where high-quality voltages and currents are required. However, the multilevel converter requires...
In this paper, the proposed sampling structure based on one-comparator sampling is presented, which can significantly reduce the system clock frequency from 100MHz to 25MHz, so as to reduce chip area. This method is verified by a synchronously-rectified buck converter with a switching frequency of 200kHz, and the digital controller takes as a control kernel the EP1C3T100 FPGA created by Altera Co...
PID (Proportional - Integral - Derivative) controllers are the most widely used closed loop controllers due to their simplicity, robustness, effectiveness and applicability for much kind of systems. With the rapid development of technology, implementation of PID controller has gone several steps from using analog components in hardware to using some software-based program to execute PID instructions...
A remote control system of the 5 degree of freedom manipulator was designed. This manipulator was installed into our mobile robot to constitute a remote rescue robot. The Denavit-Hartenberg method was used to establish the kinematic models and the path planning of the manipulator was researched. The operator could remote control the manipulator by the interactive interface of PC which could display...
Normally, one cycle control (OCC) technique is implemented in PFC boost converters by analog controllers and rarely in discrete-time systems. In this paper, a discrete-time OCC PWM modulator is proposed to single-phase PFC boost converter. The discrete-time control system is implemented in FPGA. Simulation and experimental results validate the analyses.
A kind of small scale solar irrigation control system based on FPGA is realized in this paper. The design which is composed of variable step MPPT algorithm, multiple SPWM output, motor control and the corresponding display module can drive the motor through energy storage devices and power converters. The language of verilog is used and the software of modelsim is adopted to verify the design.
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 presents an efficient design of a processor-based PDP timing controller that supports multiple high frequency control signal channels in multi-clock domain. We implemented a prototype system using the proposed design on FPGA attached to 42-inch and 50-inch PDP panels with HD resolution.
Pulse Width Modulation technique (PWM) and Pulse Frequency Modulation technique (PFM) are commonly used techniques to generate pulses to control switches in DC-DC converters. However, these techniques generate various losses as well as output fluctuations when used at wide load ranges. The conduction losses and output voltage ripples are dominant in PWM at high loads, and switching losses are dominant...
In this paper, a high-performance control system based on field programmable gate arrays (FPGAs) for a 6-UPS medical parallel robot is present. The control system utilizes the hardware and software reconfigurable feature of the advanced FPGA device to achieve our goal. Firstly, the parallel robot and its control system components and functions are introduced. Secondly, the control system general description...
This paper describes a combined Pulse Width Modulation (PWM)-Pulse Frequency Modulation (PFM) technique implemented in a Field Programmable Gate Array (FPGA) to control DC-DC converters. This technique changes the mode of operation from PWM to PFM with the change in the load condition. The efficiency of the proposed technique is determined by implementing a DC-DC converter and calculating the conduction...
Microcontroller(MCF5213CAF80) and FPGA based control system for pulsed MIG welding power source is presented, aiming at some of deficiencies in the control system based on analogous control technology and single-chip control technology, such as poor flexibility, control precision and reliability. The overall hardware circuit scheme, sampling and A/D converter circuits and PWM drive circuits are designed...
Fuzzy-logic-based control (FLC) systems have emerged as one of the most promising areas for research in Applied Computational Intelligence. These systems operate with knowledge represented in a linguistic form (IF-THEN rules) that describes relations which are not precisely known, but those effects are intuitively understood by humans. This fundamental feature makes FLC a powerful tool for industrial...
This paper discusses development of embedded controllers on a reconfigurable multiprocessor system using Field Programmable Gate Array (FPGA) technology. The system is reconfigurable in hardware and software in the sense that certain components may be reused in different applications; hence allowing rapid development of embedded control systems. Concurrent real-time operation can be achieved by utilizing...
This paper designs a new control system of high-subdivision for a stepper motor. through which integrated controller and driver of stepper motor on a FPGA chip. The problem of high-subdivision stepping angle is solved by using the technique of FPGA hardware at controllers and drivers of stepper. The number of subdivision can reach 4096, and the step pitch angle be automatically adjusted. This system...
The paper deals with the holistic modeling approach of a combined Photovoltaic and Wind power system. The method is using the DK5 modeling/design environment from Mentor Graphics and is based on the new Handel-C programming language. The goal of the work carried out was to achieve an optimized holistic digital control system design, followed by its rapid prototyping into a single Field Programmable...
The paper discusses a kind of blowout expert control system based on FPGA. It elaborates the expert control principle, and it also gives a kind of technology realization. With the help of VHDL, the paper constructs PWM generator in the Avalon's products. The paper also expounds the expert reasoning rules and the flow diagram of expert adaptive control. The experiment demonstrates that the responsibility...
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