Radu Duma

Rapid prototyping of control systems using embedded target for TI C2000 DSP

The paper presents a digital control application, in which a tuning method is proposed for DC motors, using DSP from Texas Instruments (TI). Experimental application for the DC motor illustrates the effectiveness and the simplicity of the proposed method for controller design. The control algorithm for the drive application runs on a TMS320F2812 DSP. Once the desired functionality has been captured and simulated, using MATLAB/Simulink/Embedded Target for TI C2000 DSP environment can be generated code for the DSP. All task assignments to processor are automatically made by the software. The DC Motor is driven by pulse width modulated (PWM) signals generated by the DSP.

Low-cost embedded solution for PID controllers of DC motors

Proportional Integral Derivative (PID) control is the most common control algorithm used in industry today. The popularity of PID controllers can be attributed to their effectiveness in a wide range of operating conditions, their functional simplicity and how easily engineers can implement them using current computer technology. This article discusses PID control and practical implementations and provides a brief overview on how to tuning parameters of PID controllers.

Adaptive system identification and control using DSP for automotive power generation

The paper presents an adaptive system identification and control application using a digital signal processor (DSP) from Texas Instruments (TI). The system to be modelled is an automotive alternator. Experimental application illustrates the effectiveness and the simplicity of the proposed method. The application runs on a TMS320F2812 DSP. Once the desired functionality has been captured and simulated, using MATLAB/Simulink/Embedded Target for TI C2000 DSP environment can be generated code for the DSP. All task assignments to processor are automatically made by the software. Once the coefficients of the digital filter are calculated the mathematical model of the unknown system is determined. A control algorithm is implemented in order to control the output voltage of the alternator.

Rapid control prototyping toolbox for the Stellaris LM3S8000 microcontrollers

The paper presents a rapid control prototyping toolbox for the Texas Instruments Stellaris LM3S8000 family of microcontrollers. The toolbox generates real-time C code for the Stellaris LM3S8000 family of microcontrollers and integrates other four libraries: I/O drivers, Digital Motor Control (DMC), Controller Area Network (CAN) and LM3S8000 Target Preferences. A practical application for the control of a DC motor is presented.

LOW-COST EMBEDDED SOLUTION FOR MEASURING POWER QUALITY PARAMETERS

Abstract Power quality issues are becoming a serious concern for electrical power users considering the negative influence that these phenomena can have on the electrical equipment and the utility bill. That is why more solutions are required for measuring the power quality parameters. This paper presents a low-cost approach based on an inexpensive RISC microprocessor and frequency analysis for constant measuring and monitoring of specific parameters.

Comparison between analog and digital control of LLC converter

The paper presents an approach to simulate digital power supplies. The PSIM software provides DLL (dynamic link library) blocks which allow users to link custom C/C++ routine to PSIM. A Visual C++ project is created in order to generate a DLL file. Using a PID controller with anti windup an LLC 600W digital power supply is simulated. The results are compared with simulation of an analog controlled power supply.

Rapid Control Prototyping toolbox for Renesas M32C87 microcontroller

The paper presents a Rapid Control Prototyping (RCP) toolbox for Matlab/Simulink, which can be used to generate real-time C code for the Renesas M32C87 microcontroller. The toolbox, Target for Renesas M32C87, contains Simulink blocks, which implement drivers and algorithms specific for the M32C87 processor, grouped in four libraries: I/O drivers, Digital Motor Control (DMC), Controller Area Network (CAN) and Serial Communication Interface (SCI). Control algorithms, for the M32C87 microcontroller can be developed using blocks from the Target for Renesas M32C87 toolbox and predefined blocks from Simulink or user defined blocks. After the validation of the model the cod generation process can be invoked. At the end of the code generation process the High-performance Embedded Workshop (HEW) Integrated Development Environment (IDE) is automatically started, a new HEW project is created, the generated code-source files are added to the project, the project is compiled and the binary file is downloaded to the target processor. The execution of the code can be monitored in real-time using the implemented CAN drivers.

DSP based controller for battery charging system

The paper presents a digital control application, for an automotive battery charging system, using a digital signal processor (DSP) from Texas Instruments (TI). The system to be modelled is an automotive alternator. The application runs on a TMS320F2812 DSP. Once the desired functionality has been captured and simulated, using MATLAB/Simulink/embedded target for TI C2000 DSP environment can be generated code for the DSP. All task assignments to processor are automatically made by the software. Adaptive system identification is used for determining the mathematical model of the alternator. A control algorithm is implemented in order to control the output voltage of the alternator.

Digital Motor Control Library

The paper present Rapid Control Prototyping (RCP) libraries for Matlab/Simulink, which are used to generate real-time C code for the Renesas M32C87 microcontroller. The libraries are integrated in the toolbox Target for Renesas M32C87. Simulink blocks are implemented for drivers and algorithms specific for the Renesas M32C87 microcontroller. The toolbox contains five libraries: I/O drivers, Digital Motor Control (DMC), Controller Area Network (CAN) and Serial Communication Interface (SCI). In this paper the DCM library is described in detail. A positioning application for a Computer Numerical Controlled (CNC) machine is implemented using the Renesas M32C87 microcontroller.

Towards a Rapid Control Prototyping Toolbox for the Stellaris LM3S8000 Microcontrollers

The paper presents a rapid control prototyping toolbox for the Texas Instruments Stellaris LM3S8000 family of microcontrollers. The toolbox generates real-time C code for the Stellaris LM3S8000 family of microcontrollers and integrates other four libraries: I/O drivers, Digital Motor Control (DMC), Controller Area Network (CAN) and LM3S8000 Target Preferences. A practical application for the control of a DC motor is presented.