在过去的20余年，我国变频器行业发展十分迅速，到目前正开始趋于成熟，主要表现在国产品牌的整体技术水平迅速提高，与外资品牌的竞争正从低层次的价格竞争开始向技术竞争、品牌竞争过渡。进入21世纪以来，我国中低压变频器市场的增长速度高达20 左右，远远超过同期的GDP增速，到2008年我国中低压变频器市场容量已达111.8亿元。受金融风暴影响，2009年的市场增长速度将会大幅度下滑，但全年整个行业仍将略有增长，而且此后增长速度将很快回升。

实验7无刷电机
.............\bldc
.............\....\Boot_flash
.............\....\..........\Boot_fash.axf
.............\....\..........\Boot_fash.hex
.............\....\..........\Boot_fash.htm
.............\....\..........\Boot_fash.lnp
.............\....\..........\Boot_fash.plg
.............\....\..........\Boot_fash.sct
.............\....\..........\Boot_fash.tra
.............\....\..........\Boot_fash_sct.Bak
.............\....\..........\Boot_flash.axf
.............\....\..........\Boot_flash.hex
.............\....\..........\Boot_flash.htm
.............\....\..........\Boot_flash.lnp
.............\....\..........\Boot_flash.plg
.............\....\..........\Boot_flash.sct
.............\....\..........\Boot_flash.tra
.............\....\..........\cortexm3_macro.o
.............\....\..........\main.crf
.............\....\..........\main.d
.............\....\..........\main.o
.............\....\..........\STM32F10x.o
.............\....\..........\stm32f10x_it.crf
.............\....\..........\stm32f10x_it.d
.............\....\..........\stm32f10x_it.o
.............\....\..........\syster_config.crf
.............\....\..........\syster_config.d
.............\....\..........\syster_config.o
.............\....\..........\_5110.crf
.............\....\..........\_5110.d
.............\....\..........\_5110.o
.............\....\Boot_ram
.............\....\........\Boot_ram.axf
.............\....\........\Boot_ram.htm
.............\....\........\Boot_ram.lnp
.............\....\........\Boot_ram.plg
.............\....\........\Boot_ram.sct
.............\....\........\Boot_ram.tra
.............\....\........\Boot_ram_sct.Bak
.............\....\........\cortexm3_macro.o
.............\....\........\ExtDll.iex
.............\....\........\main.crf
.............\....\........\main.d
.............\....\........\main.o
.............\....\........\STM32F10x.o
.............\....\........\stm32f10x_it.crf
.............\....\........\stm32f10x_it.d
.............\....\........\stm32f10x_it.o
.............\....\........\syster_config.crf
.............\....\........\syster_config.d
.............\....\........\syster_config.o
.............\....\........\_5110.crf
.............\....\........\_5110.d
.............\....\........\_5110.o
.............\....\dcmot.Opt
.............\....\dcmot.plg
.............\....\dcmot.Uv2
.............\....\dcmot_Boot_flash.dep
.............\....\dcmot_Boot_ram.dep
.............\....\dcmot_Opt.Bak
.............\....\dcmot_Target 1.dep
.............\....\dcmot_Uv2.Bak
.............\....\inc
.............\....\JLinkArm_Boot_flash.ini
.............\....\JLinkArm_Boot_ram.ini
.............\....\listing
.............\....\.......\Boot_fash.map
.............\....\.......\Boot_flash.map
.............\....\.......\Boot_ram.map
.............\....\.......\cortexm3_macro.lst
.............\....\.......\STM32F10x.lst
.............\....\RAM.ini
.............\....\STM32F10x.s
.............\....\user
.............\....\....\main.c
.............\....\....\stm32f10defgpio_out.h
.............\....\....\stm32f10x_it.c
.............\....\....\syster_config.c
.............\....\....\_5110.c
.............\....\....\_5110.h
.............\Library
.............\.......\inc
.............\.......\...\cortexm3_macro.h
.............\.......\...\stm32f10x_adc.h
.............\.......\...\stm32f10x_bkp.h
.............\.......\...\stm32f10x_can.h
.............\.......\...\stm32f10x_dma.h
.............\.......\...\stm32f10x_exti.h
.............\.......\...\stm32f10x_flash.h
.............\.......\...\stm32f10x_gpio.h
.............\.......\...\stm32f10x_i2c.h
.............\.......\...\stm32f10x_iwdg.h
.............\.......\...\stm32f10x_lib.h
.............\.......\...\stm32f10x_map.h
.............\.......\...\stm32f10x_nvic.h
.............\.......\...\stm32f10x_pwr.h
.............\.......\...\stm32f10x_rcc.h
.............\.......\...\stm32f10x_rtc.h
.............\.......\...\stm32f10x_spi.h

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