This section introduces linear motor parameters and selection (Kol linear motors are mainly used in high-precision or high-acceleration equipment).
1. Maximum voltage — The maximum supply voltage or peak voltage of continuous supply, which is mainly related to the selection of motor enameled wire, motor insulation materials, and manufacturing process;
2. Peak Thrust — The maximum thrust of the motor, occurring over a short period (a few seconds), depends on the safety limits of the motor's electromagnetic structure (closely related to the enameled wire material); Unit: N
3. Peak Current — The maximum operating current, corresponding to the maximum thrust, is lower than the motor's demagnetizing current (operating at the motor's peak theoretical current for extended periods will cause the motor to overheat, significantly damaging its lifespan, and in more serious cases, leading to demagnetization of the motor's internal magnets).
4. Peak power — The heat loss of the motor during continuous operation under conditions of continuous temperature rise and heat dissipation, reflecting the thermal design level of the motor;
5. Maximum Continuous Power Loss — This determines the upper limit of heat loss that the motor can continuously operate under temperature rise and heat dissipation conditions, reflecting the motor's thermal design level;
7. Maximum speed — The highest operating speed under a given supply voltage, which depends on the number of back EMF lines of the motor and reflects the results of the motor's electromagnetic design;
6. Motor Force Constant — The ratio of motor thrust to current, measured in N/A or kN/A. It reflects the results of the motor's electromagnetic design and, to some extent, the level of electromagnetic design.
7. Back EMF — The back electromotive force (coefficient) of the motor, measured in Vs/m, reflects the results of the motor's electromagnetic design and affects the motor's maximum operating speed under a given supply voltage; (reflects the motor's design parameters)
8. Motor Constant — The ratio of the square root of the motor's thrust to its power consumption, measured in N/√W. It is a comprehensive reflection of the level of electromagnetic and thermal design of the motor.
9. Magnetic Pitch NN — The distance between the magnetic poles of the secondary permanent magnets of the motor. It does not reflect the motor design level. The driver needs to use this to calculate the required motor electrical angle for vector control from the resolution of the feedback system.
10. Winding resistance per phase — The phase resistance of the motor. The value given below is often the line resistance, i.e., Ph-Ph. It is closely related to the motor's heating and can reflect the level of electromagnetic design.
11. Winding inductance per phase — The phase inductance of the motor. The value given below is often the line inductance, i.e., Ph-Ph, which is related to the motor's back EMF and can reflect the level of electromagnetic design.
12. Electrical time constant — the ratio of motor inductance to resistance, L/R;
13. Thermal Resistance — Related to the motor's heat dissipation capability, reflecting the level of the motor's heat dissipation design;
14. Motor Attraction Force — For flat linear motors with iron cores, especially permanent magnet motors, the normal attraction force of the secondary permanent magnet on the primary iron core is an order of magnitude higher than the rated thrust of the motor. This directly determines the load-bearing capacity and selection of the support rails for the linear motion shaft of the linear motor.
