Questions tagged [closed-loop]
The closed-loop tag has no summary.
89 questions
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Closed loop current control FOC algorithm isn't working
I am trying to implement a closed loop FOC current control algorithm. I have an absolute encoder and using a gate driver DRV8305 for driving a PMSM 8 pole pair motor. I have calculated the offset ...
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Induced EMF due to mag field
When a closed circular loop is placed in a magnetic field varying uniformly with time due to change in magnetic flux EMF is induced in the loop. However between what points can that potential ...
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Why is time constant of PLL by rule of thumb higher than the reference period?
Why do we generally say that the time constant of a PLL (\$\tau\$) must be 10 to 5 times higher than the \$T_{\rm IN}\$ of our reference frequency?
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Does current really require a closed path to flow?
I’ve read it many times that current requires a closed path in order to flow in circuits but how come electricity flowing from live wires can be sinked into the earth? In order to have a closed path ...
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Looking for PMSM FOC Model for My EV Powertrain Project
I'm working on a project to create a powertrain model for an electric vehicle, and I could really use your help. My model includes a battery, inverter, a closed-loop controlled motor (PMSM), gearbox, ...
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Control loop of the switching power supply
How the control loop of the switching power supply dominates the tank circuit (output inductor and output capacitor)? And more importantly, why should the output tank circuit (L and C) dominate the ...
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Is there a name for this looped power combiner circuit topology?
I've encountered a circuit topology that has an interesting effect that is so simple in design that I have a hard time believing that it hasn't been studied and named previously.
Here is a basic ...
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Low speed brushless motor voltage feedback
A 4 poles brushless motor must spin at 527 rpm, which means each one of its 3 Hall sensors pulses at 17Hz. The STMicro L6235PD motor driver outputs 17 Hz PWM signal proportional to the speed.
To ...
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How to handle the noise and wrong measurements due to the actuator in a close-controlled loop [closed]
My system has to inflate a rubber device using a diaphragm pump to a specified pressure (about 1000 Pa, with an ideal accuracy of ±50 Pa). The volume of the device is about 3 L.
The pump is connected ...
- 1,593
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Multi-loop systems block reduction techniques
Do I start by multiplying 18/s+3 * 1/s+3 = 18/(s+3)^(2)?
Then is it (18/(s+3)^(2))/(1+(18/(s+3)^(2)*4)) = 18 / ((s + 3)^2 * (72 / (s + 3)^2 + 1))?
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How to calculate the close loop gain? Am I solving it in the right way?
The following is a question from 8.18 in Design of Analog CMOS Integrated Circuit, page 342.
Consider the circuit this following Fig, \$(\frac{W} {L})_{1-4} =\frac{50} {0.5} \$, \$|{I_D}_{1-4}| = 0.5 ...
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How to calculate the feedback loop gain with feedback \$\beta\$
The following is from the book Design of Analog CMOS Integrated Circuit, page 319.
Let's break the loop at the gate of M1.
$$V_{out} = - V_T g_m \biggr[ (R_S + R_F) \parallel R_D\biggr] $$
$$V_F = ...
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AND gate IC - "SN74LVC1G08DBVR" is giving a wrong output
I am working on a boost converter circuit that gets 12Volt as input (J1) and gives 18 Volts at the output (J4). I am having issues in the feedback circuit for this converter, especially with my AND ...
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How do I explain this regulation action in terms of control theory?
Shown below is a current regulator circuit which ensures an almost constant current through R1 independent of Vin variations.
There is no closed loop feedback system evident- How can we explain this ...
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Closed-loop Transfer Function [closed]
help me answer this. pls show me your solutions, that would be very helpful so i can understand how you did it.
