How to control ac motor with single-chip microcontroller
Control methods: The output of a single chip machine is connected to a photoelectric coupler, combined with a triode and relay circuit. To see how much voltage the relay corresponds to, one end of the relay has to be connected to the voltage, and the other end to the triode. 3, one end of the relay is suitable for alternating current voltage of ac motor, and ac motor at the other end. Two relay control for positive and reverse transfer. In simple terms, the small relays are controlled by the output of a single chip, the small relays control motor
First of all, you have to make sure that you have a two-way flow of alternating current motors. For example, using a single piece of the triode drive relay to control the motor's positive and backward rotation, as in the case of the main parasymmetrical single tap. The problem with this control circuit is that you can't control the motor stop! Moreover, the steering is controlled when the motor is rotated The motor may cause damage due to inertia. In the figure, the added level 1 stop control (1) (2), and steering control besides can control the motor stopped, also can be in to control motor rotation to insert the stop control, avoid damage to the motor inertia torque motor. Of course, if you are using two limit switches to control the motor's one-way work, you can use the image above.
First, the output of the single-chip machine is connected to the photocoupler, plus the triode, and the circuit of the relay. Depending on how much voltage the relay corresponds to, the relay has to be connected at one end to the voltage, and one end to the triode. Finally, the ac voltage is suitable for ac motor at one end of the relay, ac motor on the other end, and two relays under control.
