The power of programmability gives industrial automation designers a highly efficient， cost-effective alternative to traditional MOTOR control units （MCUs）。 The parallel-processing power， fast computational speeds， and connectivity versatility of Xilinx® FPGAs can accelerate the implementation of advanced MOTOR control algorithms such as Field Oriented Control （FOC）。
Additionally， Xilinx devices lower costs with greater on-chip integration of system components and shorten latencies with high-performance digital signal processing （DSP） that can tackle compute-intensive functions such as PID Controller， Clark/Park transforms， and Space Vector PWM.
The Xilinx Spartan®-6 FPGA MOTOR Control Development Kit gives designers an ideal starting point for evaluating time-saving， proven， MOTOR-control reference designs. The kit also shortens the process of developing custom control capabilities， with integrated peripheral functions （Ethernet， PowerLink， and PCI® Express）， a MOTOR-control FPGA mezzanine card （FMC） with built-in Texas Instruments MOTOR drivers and high-precision Delta-Sigma modulators， and prototyping support for evaluating alternative front-end circuitry.
為了提高直接轉矩控制（DTC）系統定子磁鏈估計精度，降低電流、電壓測量的隨機誤差，提出了一種基于擴展卡爾曼濾波（EKF）實現異步電機轉子位置和速度估計的方法。擴展卡爾曼濾波器是建立在基于旋轉坐標系下由定子電流、電壓、轉子轉速和其它電機參量所構成的電機模型上，將定子電流、定子磁鏈、轉速和轉子角位置作為狀態變量，定子電壓為輸入變量，定子電流為輸出變量，通過對磁鏈和轉速的閉環控制提高定子磁鏈的估計精度，實現了異步電機的無速度傳感器直接轉矩控制策略，仿真結果驗證了該方法的可行性,提高了直接轉矩的控制性能。
Abstract:
In order to improve the Direct Torque Control（DTC） system of stator flux estimation accuracy and reduce the current， voltage measurement of random error， a novel method to estimate the speed and rotor position of asynchronous MOTOR based on extended Kalman filter was introduced. EKF was based on d-p axis MOTOR and other MOTOR parameters （state vector: stator current， stator flux linkage， rotor angular speed and position； input: stator voltage； output: staror current). EKF was designed for stator flux and rotor speed estimation in close-loop control. It can improve the estimated accuracy of stator flux. It is possible to estimate the speed and rotor position and implement asynchronous MOTOR drives without position and speed sensors. The simulation results show it is efficient and improves the control performance.
This article describes Atmel’s FingerChip technology for electronic fingerprint sensing that
combines the advantages of small size, low cost, high accuracy, zero maintenance, low energy
consumption and portability. This technology has applications in a wide range of fixed and
portable secured devices including access control systems, cash terminals, public transport, PCs,
PDAs, Smart Card readers and MOTOR vehicles. It can be used in almost any situation where
rapid, reliable and accurate identification or authentication of an individual is required.
The PMSM FOC is made of several C modules, compatible with the free-of-charge IAR
EWARM KickStart edition toolchain version 4.42. It is used to quickly evaluate both the MCU
and the available tools. In addition, when used together with the STM32F103xx MOTOR
control starter kit (STM3210B-MCKIT) and PM MOTOR, a MOTOR can be made to run in a very
short time. It also eliminates the need for time-consuming development of FOC and speed
regulation algorithms by providing ready-to-use functions that let the user concentrate on
the application layer. Moreover, it is possible to get rid of any speed sensor thanks to the
sensorless algorithm for rotor position reconstruction.
Clock+data serial protocol for PIC16/18F processors. Contains an example application for Zoom/Focus/Iris lens MOTOR control. Written for HiTech C Compiler.
