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 Posted: Sat 11:44, 06 Nov 2010 Post subject: boots uk Atmega8 motor winding temperature based o |
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Atmega8 motor winding temperature based on measurement and control system design
hesizertechnology,[link widoczny dla zalogowanych], makesmodeldesignofDDSbasiconFleA. ThecorrectessandfeasibilityofDDSwi11beprovedthroughsimulationanalysis. Keywords: directdigitalsynthesizer (DDS); FPGA; simulationanalysis0 Introduction With the integrated circuit technology and device level, direct digital frequency synthesis (DDS) technology has been rapid development, it is different from other frequency synthesis methods,[link widoczny dla zalogowanych], with a high frequency resolution , frequency conversion speed,[link widoczny dla zalogowanych], continuous linear phase, etc., and its digital voltage-controlled oscillator (NCO) of the phase and amplitude are digitized, you can direct high-precision digital modulation and other characteristics. 1DDS basic principles of the sinusoidal signal generator, the output signal waveform S = Asin (2. Sampan lt) (1) where - corresponds to the frequency output signal. Equation (1) the expression for time t is continuous, with digital logic to implement the expression, must be discretized. With the benchmark * Science and Technology of Heilongjiang Province Department of Education Research Project (11511349) sampling clock clk so that the phase of sinusoidal signal 0 = 27foutt (2) in a clk cycle, the change in phase 0 AO: 27f ~ t: 27 a fout (3) which refers to the frequency of clk for the 27, can be understood as \△ digital order to quantify the 27 cut into 2 equal parts, thus, each cll (cycle phase increment can be used to quantify the value of △ BAOAO × 2 (4) to indicate which B is an integer, and equation (3) simultaneous solution available BA0 = Hua = 2N (5) so the signal generator's output ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... - ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... - ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● ... - ● ... ・ ● ... ・ ● ... ・ ● ... ・ ● \When that fails to clear the \clear instruction that the bit is set 1-up time is slightly larger than the normal operation of a main program cycle time. 4 Conclusion thermal simulation based on the principle of the ATmega8 microcontroller core, designed a complete set of all electronic motor windings temperature measurement and control system and software programming of the motor and other equipment to control, for traditional motor protection to open up a new way. References: [1] Yang Yan, Zheng Qiang,[link widoczny dla zalogowanych], Zhang person .8051 SCM data transmission interface extension technology and its application [M] . Beijing: People's Posts and Telecommunications Press, 2005. [2] Ma Chao, the former Chan Wei, Geng Degen. Atm ~ 8 Principles and Applications Manual [K]. Beijing: Tsinghua University Press, 2003. [3] Ji donated stoves. A practical Temperature and humidity controller design [J]. Computer Measurement & Control, 2004,12 (7). [4] Cao Borong, Sujia Jian, Han Lingfang. microcontroller theory and application technology [M]. Beijing: Atomic Energy Press, 2OO3. About the author: Shen Xiang Hong (1971 a), Shangqiu people VOCATIONAL TECHNICAL INSTITUTE lecturer,[link widoczny dla zalogowanych], mainly engaged in online teaching and research. Received :2007.12-29
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