Jost motor Germany Jost model Jost price

Jost motor is a discrete value control motor that converts electrical pulse excitation signals into corresponding angular or linear displacement. This motor moves one step for each input electrical pulse, so it is also called a pulse motor. It is a micro special motor that converts electrical pulse signals into angular displacement to control rotor rotation. It serves as an actuator in automatic control devices. For each input pulse signal, the stepper motor advances one step, hence it is also known as a pulse motor. Stepper motors are widely used in peripheral equipment of digital computers, as well as in printers, plotters, and disk drives. The drive power supply for stepper motors consists of a variable frequency pulse signal source, a pulse distributor, and a pulse amplifier, which provide pulse current to the motor windings. The operating performance of a stepper motor depends on the good coordination between the motor and the drive power supply. The advantages of stepper motors include no cumulative error, simple structure, convenient use and maintenance, low manufacturing cost, and high ability to drive load inertia. They are suitable for small and medium-sized machine tools and applications with low speed and precision requirements. The disadvantages are lower efficiency, significant heat generation, and occasional "step loss".

Jost motor structure

Motor control structure: A brushless DC motor is a type of synchronous motor, meaning the rotor speed is influenced by the speed of the stator's rotating magnetic field and the number of rotor poles (P), where N=120．f / P. With a fixed number of rotor poles, changing the frequency of the stator's rotating magnetic field changes the rotor speed. A brushless DC motor adds electronic control (driver) to a synchronous motor, controlling the frequency of the stator's rotating magnetic field and feeding back the rotor speed to the control center for repeated correction, aiming to achieve characteristics close to those of a DC motor. In other words, a brushless DC motor can maintain a constant rotor speed within the rated load range even when the load changes. The brushless DC driver includes a power section and a control section: the power section provides three-phase power to the motor, while the control section converts the input power frequency as needed. The power section can accept direct DC input (typically 24V) or AC input (110V/220 V). If the input is AC, it must first be converted to DC by a converter (converter). Whether the input is DC or AC, before entering the motor coils, the DC voltage must be converted by an inverter (inverter) into 3-phase voltage to drive the motor. The inverter (inverter) generally consists of 6 power transistors (Q1～Q6), divided into upper arms (Q1, Q3, Q5) and lower arms (Q2, Q4, Q6), connected to the motor to act as switches controlling the current through the motor coils. The control section provides PWM (Pulse Width Modulation) to determine the switching frequency of the power transistors and the commutation timing of the inverter (inverter). Brushless DC motors are generally intended for speed control applications where the speed remains stable at the set value with minimal variation despite load changes. Therefore, the motor is equipped with Hall sensors (hall-sensor) inside to sense the magnetic field, serving as closed-loop speed control and providing the basis for phase sequence control. However, this is used only for speed control and not for position control.

Jost motor service life

Motor life is related to various factors such as functional failures caused by insulation degradation, wear of sliding parts, and bearing degradation. In most cases, it depends on the condition of the bearings. Bearing life is described below in two types: mechanical life and lubricant life. Bearing life: 1, lubricant life due to thermal degradation; 2, mechanical life due to operational fatigue. In most cases, the effect of heat on lubricant life is more significant than the effect of load weight on the mechanical life of the bearing. Therefore, motor life is estimated based on lubricant life. The most significant factor affecting lubricant life is temperature, which greatly impacts the lifespan.

Jost motor structure

The motor structure is basically the same as that of a DC motor, with different armature structures and excitation methods. In practice, slotted core armature structures are often used, where conductors placed in armature slots experience less electromagnetic force, making it easier to meet the mechanical strength requirements of insulation materials during high-speed operation. Although excitation methods can be made in series and shunt configurations, the torque of shunt motors is much lower than that of series motors. Therefore, DC motors are usually made with series excitation and slotted armatures. The stator of a universal AC/DC motor is equipped with main magnetic poles embedded with series excitation windings, and the rotor is similar to the slotted armature of a DC motor, with magnetic circuits composed of laminated iron cores. Stator laminations facilitate manufacturing and reduce costs. The armature core generally adopts a skewed slot form. The air gap between the stator and rotor is larger and uneven compared to DC motors, with the maximum air gap at the sharpest point being 3 to 4 times the main air gap. Other components, such as brush holders and end caps, are similar to those of ordinary DC motors. Universal AC/DC motors have different structural forms and are sometimes made in modular assemblies, with structures similar to torque motors. For high-capacity, high-speed, or special requirement universal AC/DC motors, commutating poles are required to improve commutation, suppress sparks, and reduce radio interference.

Weidou Intelligent Technology specializes in selling German Jost motors, Jost motors, Jost drivers, Jost synchronous motors, Jost servo motors, Jost DC motors, Jost AC motors, Jost stepper motors, Jost synchronous motors, Jost asynchronous motors, Jost single-phase motors, Jost three-phase motors, Jost drive motors, Jost geared motors, Jost electric motors, Jost original imports from Germany. Welcome customers to inquire and order.