TagConcepts:
control 4 DC motor, 115v,
H-Bridge with Mosfet's or IGBT's can driver Volts > at 115V
IRF640N 200V 18A
18A is good? ...or need more?
Then you can drive the power transistors (mosfet or IGBT) with IC drivers
Ir2110 is for Mosfet or IGBT and control High and Low side include time dead too.
The signals, PWM and address with arduino.
Here, you can add a feedback system as a PID control,
then change at realtime power to control the speed 5000rpm.
It's it all.
You need a CAREFUL with the power lines,
You can dead without finish the project.
Its can result mortal.