Fuchs motor, German Fuchs model, Fuchs price

Fuchs motors consist of the motor body and a driver, and are a typical mechatronic product. A brushless motor refers to a motor without brushes and a commutator (or slip rings), also known as a commutator-less motor. As early as when motors were invented in the nineteenth century, the practical motors produced were of the brushless type, namely, AC squirrel-cage asynchronous motors; this type of motor was widely used. However, asynchronous motors have many insurmountable drawbacks, which resulted in slow development of motor technology. The transistor was invented in the mid-last century, thus giving rise to brushless DC motors that use transistor commutation circuits to replace brushes and commutators. This new type of brushless motor is called an electronically commutated DC motor, which overcomes the drawbacks of the first generation of brushless motors.

Fuchs motor common issues

Motor issues: 1. The main drive motor operates abnormally, with bearing overheating. The main drive motor operates abnormally; slip motors vibrate violently during operation, causing bearing overheating. Disassemble the clutch armature and magnetic pole rotor to check whether the motor bearings severely lack lubricating grease, causing severe bearing wear and reduced motor operating performance. In this case, replace the damaged bearings and add sufficient lubricating grease. Under normal conditions, all components of this mechanism should be cleaned and lubricated to ensure the normal operation of the main drive motor; 2. The host speed decreases periodically. This situation is mostly caused by mechanical failures. Speed-regulating motors have many rubber rollers, each supported by bearings for rotation. If a bearing at either end of any rubber roller fails, it may cause periodic drops in the host speed. In severe cases, the host movement will be more hindered, and the bearings should be replaced immediately. Additionally, attention should be paid to the working condition of the bearings and lubrication points of all host rollers (including plate, blanket, and impression cylinders); if a failure occurs, it will also affect the printing speed.

Fuchs motor working principle

Motor direct torque control method. This method analyzes the mathematical model of AC motors in the stator coordinate system, emphasizing direct control of motor torque under the condition of an approximately circular rotating magnetic field, eliminating complex calculations such as vector coordinate transformations. Its field orientation uses stator flux linkage, which can be observed by knowing only the stator resistance, making it less susceptible to changes in motor parameters compared to vector control. In recent years, direct torque control has been applied to the control of permanent magnet synchronous motors, and its control laws and key technologies are gradually being understood and mastered. Direct torque control has broad application prospects in fully digital, high-torque, fast-response AC servo systems. Nonlinear control: AC motors are strongly coupled, nonlinear, multivariable systems. Nonlinear control achieves dynamic decoupling and global linearization of the system through nonlinear state feedback and nonlinear transformations, decomposing the nonlinear, multivariable, strongly coupled AC motor system into two independent linear single-variable systems. The rotor flux linkage subsystem consists of two inertial elements. The regulation of the two subsystems is designed separately according to linear control theory to achieve expected performance indicators. However, the basis for feedback linearization of nonlinear systems is a motor model with known parameters and precise measurement or observation of the system. During motor operation, parameters change due to various factors, and the accuracy of flux linkage observation is difficult to verify, which affects system robustness and may even degrade system performance. Thus, this control method still needs further improvement. Adaptive control can continuously extract model information during system operation to gradually improve the model, serving as a powerful means to overcome the impact of parameter changes. Adaptive methods applied to permanent magnet AC motor control include model reference adaptive control, parameter identification self-tuning control, and various newly developed nonlinear adaptive controls. However, all these methods have problems: (1) complex mathematical models and cumbersome calculations complicate the control system; (2) identification and correction require a process, so for systems with rapid parameter changes, it is difficult to achieve good results due to insufficient time for correction. Sliding mode variable structure control is a control strategy of variable structure control. Its fundamental difference from conventional control lies in the discontinuity of control, i.e., a switching characteristic that allows the system "structure" to change at any time. Its main feature is to purposefully make the system move along a designed "sliding mode" trajectory based on the deviation of the controlled variable and its derivative. This sliding mode can be designed and is independent of system parameters and disturbances, thus giving the system strong robustness. Additionally, sliding mode variable structure control does not require any online identification, making it easy to implement. Over the past 10 years, applying sliding mode variable structure control to AC drives has been a research hotspot for scholars domestically and internationally, yielding some effective results. However, the inherently discontinuous switching characteristic of sliding mode variable structure control causes a "chattering" problem in the system. The main reasons are: (1) for actual sliding mode variable structure systems, the control force is always limited, resulting in limited system acceleration; (2) system inertia, time and space lag of switching switches, and errors in state detection, especially for computer sampling systems, form "quasi-sliding modes" when the sampling time is long. Therefore, "chattering" inevitably exists and cannot be eliminated in actual systems, limiting its application.

Fuchs motor applications

Motors are mainly used as electric motors. They are the most widely used and highest-demand type of motor in industrial and agricultural production and various sectors of the national economy. Metal cutting machine tools, steel rolling equipment, blowers, crushers, water pumps, oil pumps, light industry machinery, textile machinery, mining machinery, etc., mostly use asynchronous motors for drive. In daily life, the application of asynchronous motors is also increasingly widespread; single-phase asynchronous motors are used in household appliances such as electric fans, washing machines, refrigerators, and air conditioners. In electric drives, the vast majority of drive motors are asynchronous motors, accounting for approximately 60% of the total grid load. The widespread application of asynchronous motors is due to their advantages, such as simple structure, ease of use, reliable operation, high efficiency, ease of manufacturing, and low cost. The speed regulation performance of asynchronous motors themselves is poor; DC motors are generally used in occasions requiring a wide and smooth speed regulation range. In the last one or two decades, AC speed regulation systems for asynchronous motors, developed based on power electronic devices and microcomputers, have improved the speed regulation performance of asynchronous motors, thus expanding their applications. During operation, asynchronous motors must absorb reactive power from the grid, which worsens the grid's power factor. Since the grid's power factor can be compensated by other means, this does not hinder the widespread use of asynchronous motors.

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