When the stepping motor driver (TB6600) is 32 subdivided and the duty ratio of the PWM signal is 60%, the motor speed is stable, low vibration and noise. Finally, by setting up simulation experiments, it is verified that the speed matching between the stepping motor and the knitting machine needle is better. At the same time, because I2C protocol has easy scalability, it can realize multi-channel through bus analog communication and expansion between MCU I/O ports.
Algorithm and speed matching algorithm to realize multi-speed variable speed elastic belt conveyor control system with good speed matching. The slave machine controls the stepper motor through the subdivision circuit and the drive circuit, and uses the stepping motor to speed up and down the differential. The scheme realizes the real-time communication between the control host and the PWM (Pulse Width Modulation) signal output slave through the I2C protocol communication of the master-slave MCU (Microcontroller Unit). Shifted to right and s_in coming in at its MSB.In order to solve the problems of fixed speed, single-way conveying, conveying speed and loom speed mismatch of knitting machine elastic belt conveying device, a design scheme of multi-line elastic band conveying control system based on I2C (Inter-Integrated Circuit) communication is proposed.
which essentially results in updating the r_reg value with its value The wire r_next is driven by the value of s_in and bits of r_reg.Īnd so, after the application of the s_in, at the next rising edge of the clock, the statement Now because of the assignĪssign r_next = Now the s_in value is supplied sometimes before the next rising edge of the clock. Note that the period of the negative level of the reset sould last at least to the next rising edge of the clockĪt this stage, the value of s_out also becomes 0 ( right after the rising edge of the clock). When the reset pulse is applied the r_reg becomes 0000 at the next rising edge of clock. Initially the reg value of undefined and hence we have placed 4'bxxxx in its value.
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