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Perske motors are devices that convert electrical energy into mechanical energy. They utilize energized coils (i.e., stator windings) to generate a rotating magnetic field, which acts on the rotor (such as a squirrel-cage closed aluminum frame) to form electromagnetic rotational torque. Motors are classified into DC motors and AC motors based on the power supply used. Most motors in power systems are AC motors, which can be synchronous motors or asynchronous motors (where the speed of the stator magnetic field does not remain synchronized with the rotor rotation speed). A motor mainly consists of a stator and a rotor. The direction of motion of current-carrying conductors under force in a magnetic field is related to the direction of the current and the direction of the magnetic flux lines (magnetic field direction). The working principle of a motor is the force exerted by the magnetic field on the current, causing the motor to rotate.

Perske motor performance

The circuit driving the motor consists of transistors, resistors, and diodes, enabling adjustable speed and forward/reverse drive for DC motors. Four diodes protect the transistors by preventing negative induced electromotive force generated by inductive components (the motor) from impacting the transistors. When the 74LS00 output is at a low level, Q2 and Q4 are cut off, while Q1 and Q3 conduct, resulting in a high-level output. When the 74LS00 output is at a high level, Q2 and Q4 conduct, while Q1 and Q3 are cut off, resulting in a low-level output. Supply voltage 15–30v, maximum continuous output current 500mA per motor; for short durations (10 seconds), it can reach 700mA. The maximum PWM frequency can be up to 30kHz (typically 1–10kHz). High-current traces should be as short and thick as possible, and vias should be avoided. If vias are necessary, make them larger (>1mm) and create a ring of small vias on the pad, filling them with solder during welding to prevent burnout. Additionally, if Zener diodes are used, the wires connecting the transistor emitter and collector to the power supply and ground should be as short and thick as possible; otherwise, the voltage drop across these wires during high current may pass through the diodes and conducting transistors, causing them to burn out. PWM signals can be generated by timers. However, since the 51 internally provides only two timers, outputting signals with different duty cycles to three or more DC motors requires repeated timer configuration, which is complex. We adopt a simpler method that not only provides different duty cycle input signals to more DC motors but also occupies only one timer resource. This method can be briefly described as follows: Store the duty cycle information required by each DC motor in a specific memory space. If the duty cycle is 1, save 0FFH (11111111B); if the duty cycle is 0.5, save 0F0H (11110000B) or any binary number containing 4 0s and 4 1s. That is, Duty Cycle = Number of 1s / 8. The specific binary number selected depends on the output frequency requirements. To output a PWM signal to this DC motor, simply shift once per time slice to extract a fixed bit (implemented using bit addressing or the carry flag C) and send it to the motor port. Furthermore, since the shifting algorithm depends on previous results, it is best to regularly check or reset the shifted number to prevent persistent errors due to incorrect shifting. The advantage of this algorithm is that it is an independent process capable of controlling multiple motors; the disadvantage is higher resource consumption and lower PWM frequency.

Perske motor speed measurement methods

A motor converts pulse signals into angular or linear displacement. First, it has good overload capacity. Its speed is unaffected by load size, unlike ordinary motors where speed drops as load increases. Stepper motors have strict requirements for speed and position during use. Second, control is convenient. Stepper motors rotate in "steps," exhibiting distinct digital characteristics. Third, the overall machine structure is simple. Traditional mechanical speed and position control structures are complex and difficult to adjust; using stepper motors simplifies and compacts the overall structure. A tachometer generator converts rotational speed into voltage and transmits it to the input end as a feedback signal. A tachometer generator is an auxiliary motor. Installed at the rear end of a standard DC motor, it feeds voltage back to the DC power supply to control the DC motor speed.

Perske motor performance

Under-ring lubrication for motors is an improved lubrication method, divided into under-ring oil lubrication and under-ring oil-air lubrication. When implementing under-ring oil or oil-air lubrication, lubricating oil or oil-air is injected into the lubrication zone from the inner ring of the bearing. Under centrifugal force, the lubricating oil reaches the bearing lubrication zone more easily, resulting in better performance than conventional jet lubrication and oil-air lubrication, thereby further increasing bearing speed. The main factors affecting the high-speed performance of angular contact ball bearings are the increased centrifugal force and gyroscopic moment acting on the balls at high speeds. Increased centrifugal force raises friction between the balls and raceways, while increased gyroscopic moment causes sliding friction between the balls and raceways, intensifying bearing friction heat generation and reducing bearing life. To improve high-speed bearing performance, two methods are commonly used: one is to reduce the ball diameter, such as using standardized 71900 series spindle bearings; the other is to use new ceramic (Si3N4) materials for the balls. Since the density of Si3N4 ceramic material is only 40% that of bearing steel, the high-speed performance of such bearings is significantly higher than that of all-steel bearings. Rolling bearings used on spindles require preload to suppress vibration and sliding during ball revolution and rotation at high speeds, and to improve shaft rotation accuracy. Preload methods mainly include constant position preload and constant force preload.

Weidou Intelligent Technology specializes in selling German Perske motors, Perske motors, Perske drives, Perske synchronous motors, Perske servo motors, Perske DC motors, Perske AC motors, Perske stepper motors, Perske synchronous motors, Perske asynchronous motors, Perske single-phase motors, Perske three-phase motors, Perske drive motors, Perske geared motors, Perske electric motors. Perske original imports from Germany. Welcome inquiries and orders from users.