步进电机控制-VHDL程序与仿真.doc

步进电机控制系统VHDL语言程序-仿真library IEEE;use IEEE.std_logic_1164.all;use IEEE.std_logic_arith.all;use IEEE.std_logic_unsigned.all;entity step_motor isport (reset:in STD_LOGIC; -系统复位信号 dir: in STD_LOGIC; -方向控制信号 clk: in STD_LOGIC; -系统时钟信号 ini: in STD_LOGIC; -初始化使能信号 manner: in STD_LOGIC_VECTOR (1 downto 0); -激磁方式的选择开关 angle: in INTEGER range 255 downto 0; -步进角的倍数设定输入 baBA: out STD_LOGIC_VECTOR (3 downto 0); -步进电机状态输出end step_motor;architecture stepmotor_arch of step_motor issignal count: INTEGER range 0 to 7; -计数器 signal cntInc: INTEGER range -2 to 2; -设定累加器所需的累（加/减）计数值signal cc : integer range 0 to 3;signal cntIni: INTEGER range -1 to 0; -设定累加器所需的计数初值signal angleDnCount: INTEGER range 255 downto 0; -计算已经转过的步进角signal angleDnCntDec: INTEGER range 2 downto 1; begin process(dir, manner, angle)-, ini) begin -if ini=1 then cc - 1-相激励 -count=0; cntIni=0; cntInc=2; angleDnCntDec - 2-相激励 -count=7; cntIni=-1; cntInc=2; angleDnCntDec - 1-2相激励 -count=0; cntIni=0; cntInc=1; angleDnCntDec -manner=00 autodetect if (angle rem 2) =1 then - 2-相激励 -count=7; cntIni=-1; cntInc=2; angleDnCntDec=2;-10; else - 1-相激励 -count=0; cntIni=0; cntInc=2; angleDnCntDec - 1-相激励 -count=0; cntIni=0; cntInc=-2; angleDnCntDec - 2-相激励 -count=7; cntIni=-1; cntInc=-2; angleDnCntDec - 1-2相激励 -count=0; cntIni=0; cntInc=-1; angleDnCntDec -manner=00 autodetect if (angle rem 2) = 1 then - 2-相激励 cntIni=-1; cntInc=-2; angleDnCntDec=2;-10; else - 1-相激励 cntIni=0; cntInc=-2; angleDnCntDec=2;-10; end if; -angle end case; -manner end if; - else dir=0 -end if; - ini end process; counting_reset: process(reset,ini, angle, clk) begin if reset=1 then count=0; angleDnCount=0; elsif clkevent and clk=1 then if ini=0 then count=0+cntIni; angleDnCount=angle; else count angleDnCntDec then angleDnCount = angleDnCount-angleDnCn