Dear Friends,
I am in the final stage of designing an Integrated AC Servo Motor (Motor, Drive and Encoder in a single package) with the following features. Trying to get your opinion on the demand and features expected.
1. Low cost. NEMA 23 around 250$ to 300$ NEMA 34 around 300$ to 400$
2. Highly energy efferent Vector Control or Field Oriented Control based motor driving algorithm at the core. Uses 33 KHz PWM switching of MOSFET bridges
3. Very high resolution possible 32000 steps/rev is easily achievable. 10000 or 20000 steps/rev by default.
4. Smooth vibration and noiseless operation due to Sinusoidal PWM output driving stage
5. Operates in torque, speed and position control modes
6. Very high torque density in much smaller motors than general 8 pole PMSM servo motors at low speed due to the use of a 100 pole count PMSM motor (i.e. a stepper motor)
7. Significantly higher toque in high speed range compared to conventional and micro-stepping drives due to closed loop operation
8. Due to high torque, the motor can be directly connected to ball screws or machine shaft without any speed reduction/torque expansion mechanism like gears, timing belts and pulleys etc. which with reduce product/machine development cost and increase accuracy and precision of the drive system
9. Due to high torque, high resolution and direct driving capability, simpler and cost effective belt driven linear motion components like this can be used directly in high precision applications. Linear power driving without the ball screws reduce the product cost further more. Direct belt drives are generally not suitable for stepper motors with conventional drive because of their low resolution and ball screws are not suitable for long linear motion.
10. PC based controller parameter programming software using USB port
11. Two encoder ports (one for future implementation as dual-encoder drive)
12. CAN port for making the drives work in/through a network (for future implementation)
13. Operates from a 24V or 48V switching power supply depending on the motor model
Your comments and suggestions will be highly appreciated as I am going to kickstarter after several months.
Cheers!!