| 摘要 |
PURPOSE:To regulate acceleration and deceleration in conformity with externally preset values by constituting an acceleration and decceleration circuit of a step motor by a digital circuit. CONSTITUTION:When a start signal b becomes a 1, a clock signal c is generated by an AND gate 21, and a load signal h is simultaneously generated by a monostable multivibrator 24. Then, the values of a switch group 23 are preset in a down counter 22, and the values of a switch group 31 are preset in a down counter 27 and an up counter 30. Borrow signals d and g are generated by preset values of each switch group. When an acceleration signal e becomes a 1, the borrow signal g becomes short by the time interval of the borrow signal d, the frequency becomes high, and a motor is accelerated. When the acceleration signal e becomes a 0, the frequency of the borrow signal g becomes constant. When the decceleration signal f becomes a 1, the borrow signal g becomes longer by the time interval of the borrow signal d, and the frequency becomes short. |
