Uses the method from my design
DC Motor Revolution Detector
http://everycircuit.com/circuit/6753368923176960
to read the motor revolutions / s. The dirivative of this result is used as feedback to control the acceleration of the motor. The acceleration is set discretely based on the following three conditions (modes):
- Revolutions / s < reference: Acceleration = 2
- Revolutions / s ≈ reference: Acceleration = 0
- Revolutions / s > reference: Acceleration = - 2
* The span where rev. / s ≈ ref. is satisfied can be changed by changing the gain in the left most opamp coupling.
* The two non-zero rates of acceleration can be changed individually with the two upper left voltage generators (2 V = 2000 rpm / s).
* The controller used in the acceleration loop is a simple integrator.
* Use the voltage generator next to the motor to set the rpm (1 V = 1000 rpm).
The motor rev. detector circuit is scaled for a specifik motor voltage and start current, but besides these, the parameters can be changed at will. This is explained better in the design mentioned above.
My other designs:
Colpitts Oscillators
http://everycircuit.com/circuit/6472095956729856
Binary LC Filter Bank Oscillator
http://everycircuit.com/circuit/5849640909144064
LC Filter Bank Oscillator
http://everycircuit.com/circuit/6141020952854528
RF Up and Down Mixing
http://everycircuit.com/circuit/6321309163454464
DC Motor Revolution Detector
http://everycircuit.com/circuit/6753368923176960
Amplitude Modulation and Demodulation
http://everycircuit.com/circuit/5510207106187264
Boost SMPS Unlimited Voltage Build Up
http://everycircuit.com/circuit/6448454909034496
High Power Charge Pump w. Mosfets
http://everycircuit.com/circuit/5016778832084992
Transformerless 230 Vac to 10 Vdc
http://everycircuit.com/circuit/4981362800197632
Motor Revolution Controller
http://everycircuit.com/circuit/6424781689978880
Motor Current Sliding Mode Controller
http://everycircuit.com/circuit/5502940846751744
ΣΔ ADC w. Result Displayed
http://everycircuit.com/circuit/4549196269223936
300W Class D Amplifier w. Mosfet output
http://everycircuit.com/circuit/5452375043342336
Three Phase Star Δ Safe Relay Wiring
http://everycircuit.com/circuit/4748634531037184
Accidental 555 High Voltage Generator LOL
http://everycircuit.com/circuit/5057154477457408
