Block diagram of proportional and integral controller, Electrical Engineering

Q. Show Block diagram of proportional and integral controller?

The block diagram of Figure illustrates a typical microprocessor system used to implement the digital PI controller. It would be simple to include the derivative operation to implement the PID controller. While an analog timer is shown in Figure to determine the start of the next sampling period, a software timing loop can be used to keep track of when T seconds have elapsed. The output pulse, once every T seconds, is applied to the interrupt line of the microprocessor. This will cause the processor to execute the interrupt routine to output the next value of the control, u[(k + 1)T ], which is sent to the D/A converter, whose output in turn controls the power amplifier. The timing pulse from the timer is also sent to the "sample" command line, thereby triggering the sample-and-hold circuitry; the motor velocity ω(t) is sampled and held constant for one sampling period. The value of ω(kT) is then converted to an N-bit binary number by the A/D circuitry. The microprocessor is signaled via "data ready" line (which may be attached to the interrupt line of the microprocessor) that the sampled data have been converted. The second interrupt will cause the processor to read in the value of ω(kT) and then compute the next value of control, u[(k + 1)T]. After calculation of the control, the microprocessor waits for another interrupt from the timer before it outputs the control at t = (k + 1)T .An assembly-language program can be developed for the implementation of the PI controller.

2367_Block diagram of Proportional and integral controller.png

The control of a dc motor can be achieved with a PI controller discretized for microprocessor programming. The starting point is that the PI controller is described by a differential equation.

The latter is discretized at the sampling instants by one of the numerical approximation methods, and then is programmed in the microprocessor machine language.

Posted Date: 7/1/2013 7:52:55 AM | Location : United States







Related Discussions:- Block diagram of proportional and integral controller, Assignment Help, Ask Question on Block diagram of proportional and integral controller, Get Answer, Expert's Help, Block diagram of proportional and integral controller Discussions

Write discussion on Block diagram of proportional and integral controller
Your posts are moderated
Related Questions
Find the rms voltage of the given cardiac wave

which type of ic package is more advantageous,suitable and versatile

hi PA DS:1234 = AB PA DS:1235 = CD if i typed mov DX,[1234H] WHAT SHOULD I GET IN DX ?

Q. Show Principal source of energy? The principal source of energy comes from the burning of fossil fuels such as coal and oil to generate steam, which drives steam turbines, w

what is the application of thermodynamics in electrical engineering?

The  programming  Model of 8085 Microprocessor The programming  model  of 8085 microprocessor is  shown in figure  below in this  model  various 8 bit  and 16  bit registers a

Q A60-Hz, 100-kVA, 2400/240-V(rms) transformer is used as a step-down transformer from a transmission line to a distribution system. Consider the transformer to be ideal. (a) Fi

Q. Explain Common emitter configuration? Common emitter configuration: In this circuit the emitter is common to both input and the output.Such a configuration is also known as

When a current is passed through a conductor, a magnetic field is created in its surroundings. We can represent this magnetic field by drawing 'field (or 'flux') lines' with two

Q. Determine the voltages Vx using voltage division and equivalent resistor reductions for the circuits shown in Figure.