Characteristics and analysis of linear stepping motor
Characteristics and analysis of linear stepping motor, in the application of traditional engineering machinery engine, stepping motor mostly adjusts the engine speed by adjusting the accelerator with manual pull rod or foot pedal, and does not control the engine speed, in this way, it not only affects its own performance but also limits the original superior performance of the concrete delivery pump: it is extremely inconvenient to operate the engine up and down, and it is difficult to realize automatic and remote control. In addition, the load of concrete delivery pump changes greatly under different working modes;
The engine speed fluctuates with the fluctuation of load, which affects the working efficiency of the engine and hydraulic system;
It is difficult for the engine to operate at a lower speed. If the load of the linear stepping motor is large (Inching debugging at low speed)It is easy to cause the engine to drop or even stall; The engine speed cannot be automatically adjusted.
In view of these situations, we use PLC to realize the double closed-loop control system of the linear stepping motor driving diesel engine governor to solve the above problems. The structural diagram of the speed regulating device is shown in Figure 1.
Figure 1 structure diagram of speed regulating device, there are three states of concrete delivery pump in normal work: High pressure pumping, low pressure pumping and inching debugging. These three states have different power output to the engine, the three switching value signals corresponding to the operation instructions are input into the PLC, and the corresponding rotational speeds of the engine can be set respectively through the logical relationship between each other, at the same time, the PLC also receives pulse signals from the speed sensor on the flywheel housing of the engine, and the two signals are sent to the PID regulator in the PLC together to form PTO control signals (
The output high-speed pulse frequency and number of pulses are controlled by a given deviation from the feedback speed)
To the stepper motor driver, the driver amplifies and converts it into two phase differences of 180 °
The pulse train is given to the linear stepping motor, the motor rotates at a certain angle to make the screw move in a corresponding straight line, and the transmission mechanism makes the accelerator pull rod reach the given position accurately, finally, the engine runs stably at a given speed, ensuring the best match between the engine power output and power demand.
Shenzhen ruite electromechanical Technology Co. , Ltd. is located in Shenzhen, Guangdong province, it is a stepping motor manufacturer integrating research and development, production and sales of stepping motor drivers, servo drivers, stepping motors, servo motors and spindle servo motors.
The company's core products include servo drivers, Hybrid Stepping Motor Drivers, servo motors and stepping motor manufacturers of various stepping motors.
Products are widely used in CNC machine tools, milling machines, packaging, printing, textile, computer embroidery, engraving machines, medical machinery, sewing machines, logistics and other automation control fields and intelligent manufacturing industries.
In the process of operation, the company always insists on innovation and quality first, providing customers with products with high cost performance.
In order to meet the special requirements of actual working conditions and in the case of abnormal engine speed signals, the system designs two modes of speed closed loop and open loop control, and can switch freely through switches, in open loop mode, use the console's'Slow down, speed up'
The switch controls the stepless adjustment of engine speed from low idle speed to high idle speed.
For more knowledge of linear stepping motor parameters, please consult ruite electromechanical's main products: stepping Motor, linear stepping motor, stepping servo stepping driver, stepping motor driver, integrated stepping brake stepping motor, waterproof stepping motor, brushless motor, servo motor and other types of stepping motors, welcome to inquire.
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