Mark Liu

1. Differences Between Single-Axis and Dual-Axis Stepper Motors 1.1. Structural Differences A single-axis stepper motor is the simplest type, consisting of only one rotor and one stator, allowing rotation in a single direction. A dual-axis stepper motor has two rotors and two stators, enabling simultaneous rotation in two directions. 1.2. Control Methods A single-axis stepper motor requires only two-phase or four-phase drive signals, making its control relatively simple. It is suitable for basic applications. A dual-axis stepper motor typically needs eight or more drive signals, offering higher precision and better performance in complex applications. 1.3. Power and Load Capacity Dual-axis stepper motors generally provide higher power and greater load capacity. Since they have two rotors and stators working together, they generate higher torque and can handle heavier loads compared to single-axis motors. 2. How to Choose Between Single-Axis and Dual-Axis Stepper Motors 2.1. ... Continue reading →

No, a stepper motor cannot operate without a driver. The driver is an essential component that supplies the appropriate current and voltage to control the motor's rotation angle and speed. 1. The Relationship Between Stepper Motors and Drivers A stepper motor is an open-loop control motor that converts electrical pulse signals into precise angular or linear displacement. It moves in fixed increments (steps), hence the name "stepper motor." However, stepper motors cannot directly use standard AC or DC power—they require a specialized electronic device (the driver) to convert and regulate the control signals. https://www.omc-stepperonline.com/image/cache/catalog/integrate/ESS17-04-500x500.jpg The driver's primary function is to translate pulse signals from the controller into current signals that the stepper motor can interpret, enabling it to rotate at the desired step angle and speed. Without a driver, the motor would not receive proper control signals and thus ... Continue reading →

Stepper motors are widely used in various automation equipment due to their precise angular displacement control and excellent start-stop performance. However, as the speed increases, the torque output of a stepper motor tends to decline. The specific speed at which torque significantly decreases depends on the motor's model and design. Generally, when the speed approaches or exceeds the motor's rated maximum speed, the torque will drop noticeably. 1. Causes of Torque Degradation in Stepper Motors The primary reasons for torque degradation in stepper motors at high speeds include: Increased Back EMF: As the speed rises, the back electromotive force (EMF) within the motor also increases. This results in a reduction of the motor current, weakening the magnetic field and consequently reducing the torque. Magnetic Saturation: At high speeds, the motor's magnetic field may reach saturation. In this state, increasing the current does not further enhance the magnetic field ... Continue reading →

1. Causes of Position Deviation in Stepper Motors Inappropriate Drive Module Selection The compatibility between the stepper motor and its drive module is critical. If the selected drive module lacks sufficient capability or fails to meet the required driving parameters, it can lead to position deviation. To resolve this, a suitable drive module must be selected to ensure the motor operates under stable conditions. Incorrect Motor Parameter Settings The driving and control parameters of a stepper motor significantly impact its performance. Different stepper motors require specific parameter settings to achieve optimal operation. Incorrect or improper parameter settings can result in poor position control, causing position deviation. Poor Mechanical Design Mechanical design flaws, such as low transmission efficiency or excessive load, can adversely affect the position control performance of a stepper motor. Therefore, during the mechanical design process, it is essential to consider ... Continue reading →

With the rapid development of automation technology, automated guided vehicles (AGVs) have become an indispensable and important equipment in the fields of logistics, warehousing and production.   With the help of cutting-edge control technology, sensor technology and navigation system, AGV cars can independently transport goods and achieve precise positioning, showing a very high level of intelligence. As a key component of the AGV car's power system, the integrated servo motor's role cannot be ignored.AGV(Automated Guided Vehicle),i.e. autonomous navigation delivery vehicles.It is widely used in factories, warehouses and other places to perform automated transportation and logistics operations.   These vehicles can accurately navigate according to preset paths or specific markers in the environment, easily completing heavy tasks such as cargo transportation and handling. They are equipped with advanced sensors, navigation systems and control systems, allowing AGVs ... Continue reading →

1. Classification standards for servo motor energy consumption levels The international standard for classifying energy consumption levels of servo motors is IEC 61800-9-2.. The IEC 61800-9-2 standard divides the energy consumption levels of servo motors into four levels: IE1, IE2, IE3, and IE4. 2. Energy consumption indicators of servo motor energy consumption levels 2.1. IEC 61800-9-2 standard   IE1 grade: This grade is a traditional non-high-efficiency energy-consumption motor, and its energy efficiency index is much lower than other grades. Rated efficiency range for IE1 class is 0.50-0.80.   IE2 grade: This grade is a medium-efficiency, high-energy-consumption motor with a rated efficiency range of 0.80-0.90. The application scenarios of IE2 level are mainly medium and low load situations.   IE3 grade: This grade is a high-efficiency energy-consuming motor with a rated efficiency range of 0.90-0.95. The application scenarios of IE3 level are mainly ... Continue reading →

1. Possible Causes 1.1. Mechanical problems: If the servo motor cannot keep up with the expected speed, it may be due to problems in the mechanical system. For example, mechanical parts are damaged, the transmission device fails, or the machine is overloaded. 1.2. Electrical problems: Another possible reason why the servo motor cannot keep up with the expected speed is electrical problems. If the power supply voltage of the motor is too low or the AC power supply is unstable, the output voltage of the servo motor will also be unstable, resulting in the speed not keeping up with expectations. 1.3. Parameter adjustment problems: Another common problem is incorrect parameter settings. If the parameters of the servo motor are not set correctly, it may cause the motor to fail to reach the expected speed. 2. Solutions 2.1. Check the mechanical system: If there is a problem in the mechanical system, check and repair the damage to the mechanical parts, clean and lubricate the machine, and ... Continue reading →

Yes, the torque stop function can be achieved by adjusting the torque setting in the closed loop when the servo motor is running. 1. Working principle of servo motor A servo motor is a motor that converts electrical energy into mechanical motion. Unlike ordinary motors, it monitors the motion state in real time through feedback devices such as encoders, and the control circuit controls the motor more accurately. The main working principle of the servo motor is: the control circuit reads the feedback signal, compares it with the target position, calculates the error, and sends the control signal to the motor so that it can move according to the preset motion trajectory. 2. The principle of setting the torque stop function During the operation of the servo motor, the torque stop function needs to be set in many application scenarios to ensure that the device can stop moving more accurately. The principle of achieving torque stop is: in most cases, there is a torque limiter inside the ... Continue reading →

The input shaft of the planetary gearbox is the shaft where power is input, and the output shaft is the shaft where power is output. They achieve the functions of deceleration, speed increase or change of transmission direction through the interaction of components such as the planetary gearbox carrier, sun gear and planetary gear. In the field of mechanical transmission, the planetary gearbox system has attracted much attention for its unique transmission method and high efficiency. Among them, the input shaft and output shaft are two indispensable key parts of the planetary gearbox system. This article will deeply analyze the input shaft and output shaft of the planetary gearbox to show you their working principles and applications. 1. Basic structure of planetary gearbox system Before understanding the input shaft and output shaft, let's briefly review the basic structure of the planetary gearbox system. The planetary gearbox system is mainly composed of sun gear, planetary ... Continue reading →

1. Composition and working principle of planetary gearbox The planetary gearbox is composed of planetary gears, sun gears, internal gears, external gears, etc. Its working principle is that the sun gear, planetary gears and internal gears transmit the driving force to the external gears through the cam to achieve the transmission of different speeds and torques. 2. Fault signal characteristics of planetary gearbox 2.1. Significant increase in noise: After a fault occurs in the planetary gearbox, the noise will increase significantly, which is caused by the friction and wear of the faulty gear. 2.2. Temperature increase: After the planetary gearbox fails, the operating efficiency decreases, which will cause excessive heat and cause the temperature of the entire system to rise. 2.3. Abnormal vibration signal: Abnormal vibration signal is one of the most significant fault characteristics. The increase in friction of the faulty gear will cause a larger vibration signal. 3. ... Continue reading →

Stepper motors cannot achieve infinite speed change, but they can achieve a certain degree of speed change by changing the step angle and driving method.   1. Working principle of stepper motor A stepper motor is a motor controlled by different phases, which can achieve precise positioning and rapid acceleration and deceleration. The principle is to make the motor rotor rotate according to a fixed step angle under the changing phase sequence modulation. The movement of a stepper motor is discrete and can only produce a fixed step distance and cannot achieve seamless and continuous rotation. 2. Definition and implementation of infinitely variable speed Continuously variable speed refers to achieving stepless speed change by changing the motor output torque and speed. It can achieve very delicate adjustments, so that the motor's speed and torque can be seamlessly switched, and almost any change can be achieved. There are two main ways to achieve infinite speed: ... Continue reading →

1. Use Screw A common method of converting the rotary motion of a stepper motor into linear motion is to use a screw. Attaching a stepper motor to a threaded shaft that interacts with a nut-like positioner converts rotational motion into linear motion. 2. Use Guide Rails Another common method is to use guide rails. The guide rail can convert the rotational motion transmitted by the stepper motor into linear motion. Guide rails are usually made of metal rods or similar materials that ensure continuity and stability of linear motion. Guide rails can be used in many industries, including robotics, CNC machine tools and medical equipment. 3. Use Belt The third method is to use straps. By attaching a stepper motor to a pulley and wrapping a strap around the pulley, rotational motion can be converted into linear motion. This method requires ensuring tight contact between the strap and the wheel at all times, and using appropriate tensioners to maintain strap tightness and normal movement. ... Continue reading →

The brushless DC motors with gearboxes are advanced motors that is consist of a bldc motor and a gearbox. It uses electronic commutation instead of traditional mechanical commutation. It has the advantages of high efficiency, reliability, low noise, and long life. The structure of the brushless DC geared motor is more complex than that of the brushed DC geared motor, but its performance and efficiency are higher. It detects the position of the rotor through the sensor and transmits the position signal to the driver. The driver controls the current direction of the motor based on the position signal, realizes electronic commutation, generates a magnetic field, and drives the rotor to rotate. DC brushed geared motor is also a common motor type, which consists of a DC motor and a reducer. This kind of motor has the advantages of simple structure, easy control, and low cost. Therefore, in some applications with simple functions, or on the premise that it can meet the ... Continue reading →

1. Introduction to the five wires of brushless DC geared motor ‌Positive power wire (+5V)‌: This wire provides the working voltage for the motor. It is usually red in color and is used to control the transmission of signals to ensure the normal operation of the motor. ‌Power supply negative wire (-5V) or ground wire (GND)‌: As the reference point of the circuit, all signal wires and power wires will be connected to this wire to protect the circuit and other wires from electric shock. Usually the color is black or brown . ‌Signal wire (yellow wire and blue wire)‌: These two wires together form a two-way signal, which is used to improve the accuracy and stability of control. They are related to the number of revolutions of the rotor, and the voltage changes in the opposite direction, providing a signal of the motor speed to the controller. ‌Hall sensor power wires (+5V and GND)‌: These wires provide power to the Hall sensor and ... Continue reading →

1. What is a Stepper Motor? Stepper motor is a commonly used precision motor that can rotate at a certain angle through pulse signals. Stepper motors are widely used in a variety of automation fields, including control systems, photographic equipment, and medical equipment. 2. Characteristics of Stepper Motors 2.1 High precision Stepper motors can achieve very high positioning accuracy when stopped, so they can be used in applications that require high-precision control and positioning. 2.2 Stability The output speed of the stepper motor can be very stable, which ensures that it can maintain a relatively constant output torque under load. 2.3 Good low speed adjustment performance Stepper motors can achieve very small angle control, which also makes speed control very precise, especially when running at low speeds. 3. Output Torque of Stepper Motor The output torque of stepper motor includes static torque and dynamic torque. 3.1 Static torque The static torque ... Continue reading →

1. Working principle of stepper motor A stepper motor is a motor that converts electrical energy into rotational motion. It converts electrical signals into mechanical motion. The motor is controlled through a driver to achieve precise position control and speed control. There are two control methods for stepper motors: open-loop control and closed-loop control. Among them, open-loop control means that the controller sends instructions to the stepper motor, and the motor rotates according to the instructions; closed-loop control adds a feedback system for monitoring and adjustment based on open-loop control, improving accuracy and stability. 2. The connection between stepper motor and brake A brake is a device that converts kinetic energy into heat or other forms of energy, which can reduce or stop the movement of a vehicle or machinery. In some cases, it is necessary to stop mechanical equipment or vehicles at a precise position. In this case, electronic brakes or electronic locking ... Continue reading →

1. Basic principles and characteristics of stepper motors A stepper motor is a precision motor that can accurately control position according to a preset number of steps. The working principle of a stepper motor is to use magnetic field rotation to control the position and speed of the rotor. It consists of stator, rotor, drive circuit and sensor. Whenever the drive circuit gives a pulse signal, the rotor will rotate at a certain angle according to the set number of steps. Stepper motors have the advantages of precise control and high positioning accuracy, and are widely used in robots, CNC machine tools, electronic equipment and other fields. 2. Can stepper motors be powered by batteries? The answer is yes. Stepper motors can be powered by batteries, but you need to pay attention to whether the voltage and current of the battery meet the requirements of the stepper motor. The voltage and current of stepper motors are generally relatively large, so a suitable battery needs to be ... Continue reading →

1. The relationship between stepper motors and relays are controlled electronically to achieve precise position control and motion control. The stepper motor can be directly connected to the power supply and the rotation is controlled by controlling the voltage, so in theory there is no need to use a relay. However, in actual use, it is necessary to use relays in some cases. For example, when a larger current needs to be used to start or stop a stepper motor, a relay can be used to provide auxiliary control of the motor. In addition, if direct control of the stepper motor will have a negative impact on the main control board or high level, using a relay can play a role in isolation and protection. 2. Matters needing attention 2.1 When selecting a relay, you need to consider that the rated voltage and current of the relay must match the actual voltage and current of the stepper motor, otherwise it will easily cause failure to operate normally. 2.2 A suppression circuit ... Continue reading →

Stepper motor inductance is a crucial parameter that influences motor performance. Its primary functions are as follows:   1. Energy Storage   When voltage is applied to the motor, the inductance stores energy, generating a magnetic field. Upon voltage removal, the inductance releases energy, sustaining the magnetic field's decay for a period.   Limiting Current Change Rate   Inductance impedes abrupt current changes. According to Lenz's law, when current changes, the inductance generates a counter-electromotive force (CEMF) that opposes the current change. This is essential for stepper motor control as the motor requires rapid current direction changes to achieve stepping motion.   Impacting Motor Response Speed   Inductance reduces the motor's response speed to control signals. This is because the inductance takes time to store and release energy. For high-speed applications, choose motors with lower inductance to enhance response speed. ... Continue reading →

The resistance value of a stepper motor has a significant impact on its performance, including current, heat generation, torque, and speed. Therefore, selecting the appropriate resistance value is crucial. Here are some principles to consider when selecting resistors for stepper motors:   1. Determine the Appropriate Resistance Value Based on Motor Voltage and Current   The resistance value of a stepper motor can be calculated using the following formula:   R = U / I   Where: R: Resistance value (unit: ohm) U: Motor voltage (unit: volt) I: Motor current (unit: ampere) When selecting the resistance value, ensure that the motor current does not exceed its rated current. Otherwise, the motor may overheat and damage.   2. Determine the Appropriate Resistance Value Based on Motor Torque and Speed Requirements   The relationship between motor torque and speed with the resistance value is as follows:   Torque is directly proportional to current and ... Continue reading →