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kidney
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What is difference between servo and VFD?
A servo system is a closed-loop motion control system usually consisting of a motor (servo motor) usually a synchronous motor combined with an encoder for position/speed feedback, and a drive (servo drive) which is the electronic amplifier. A servo drive usually has some advanced functionality, like PLCopen commands, custom accel/decel ramps, compensation, and provides an interface for synchronization with the control system and other drives. A servo is a VFD, in that it probably uses triacs to control the output waveform that drives the motor; by varying the frequency and magnitude, it can precisely control the motor with closed-loop feedback of position/velocity from the encoder.A VFD (Variable Frequency Drive, also known as a Variable Frequency Inverter) generally refers to the electronic amplifier of an open-loop system, which can vary the frequency and magnitude to control speed. Without closed-loop control it will not be as precise as a servo system, but is usually good enough for most applications and will probably provide soft-start functionality and other protections to the motor.See also What_is_the_difference_between_servo_drive_and_variable_frequency_drive
What is the function of a feedback loop?
to regulate a process
What is an open loop system?
Open Loop control Systems have input, then the input is processed by various components like amplifiers, filters etc, then final out stage.The main difference between open loop and closed loop systems is that in open loop systems there is no feedback.
How do you improve open loop system?
Feedback from the output to the input will provide stability and control. It is desirable to havemaximum open loop gain but without proper feedback it will be probably totally unstable
What is sensitivity of open loop control system?
The sensitivity of an open loop control system is always 1, it is due to no feedback involved in open loop.
Is a stepper motor with feedback loop a servo motor?
No, stepper and servo motor are by mechanical design two different types of motors.
What is servo drive?
A servo drive is any motor controller which uses a closed feedback loop to monitor the motors speed. This is normally accomplished through the use of an encoder or resolver.
What is the difference between feedback negative feedback a negative feedback response a negative feedback mechanism and a negative feed back loop?
in negative feedback. when an enzyme (negative feed back mechanism) produces too much of a molecule or substance that substance binds to the enzymes allosteric site to hault production of that substance (negative feedback response). and the whole process is the negative feedback loop.
What is feedback loop and how does it work?
A feedback loop is a mechanism that is used to maintain homeostasis. In layman's terms, it is a checks and balances system within the body to keep hormone levels even.
Open loop and close loop system in injection moluld machine?
loop checking is perform before cable termination..the difference between a close loop and open loop is,tha close loop has a feedback while the open loop has not.
What makes closed-loop op amp unstable?
A: It does not. The loop becomes unstable ONLY if there is positive feedback either voltage or phase. For a close loop to be stable negative feedback is required.
What is meant by servo mechanism?
Servomechanism is the combination of set of devices using for precision activities like movement, triggering, aiming by acting in a closed loop system by comprising an input device, a processor, a module to analyse feedback, prime mover like servomotor, a sensor for giving feedback. In each incremental motion a position feedback is sent to processor to analyse to deliver an instruction to module such that position value - feedback incremental value is the current position which will loop until target value become null.
Closed loop gain for feedback oscillators?
Feedback oscillators have a closed loop gain of
What is difference between servo and VFD?
A servo system is a closed-loop motion control system usually consisting of a motor (servo motor) usually a synchronous motor combined with an encoder for position/speed feedback, and a drive (servo drive) which is the electronic amplifier. A servo drive usually has some advanced functionality, like PLCopen commands, custom accel/decel ramps, compensation, and provides an interface for synchronization with the control system and other drives. A servo is a VFD, in that it probably uses triacs to control the output waveform that drives the motor; by varying the frequency and magnitude, it can precisely control the motor with closed-loop feedback of position/velocity from the encoder.A VFD (Variable Frequency Drive, also known as a Variable Frequency Inverter) generally refers to the electronic amplifier of an open-loop system, which can vary the frequency and magnitude to control speed. Without closed-loop control it will not be as precise as a servo system, but is usually good enough for most applications and will probably provide soft-start functionality and other protections to the motor.See also What_is_the_difference_between_servo_drive_and_variable_frequency_drive
What is a closed loop system?
A control system that appears to be self-regulating. Closed-loop systems employ feedback and a reference of correctness (norm or set point). Deviations from the norm are detected and corrections made in order to maintain a desired state in the system. Closed loop systems provide the homeostatic mechanism of many physiological functions (see negative-feedback) and also control some movement patterns, where feedback from proprioceptors and other receptors play an important part. Compare open-loop-system.
What is negative feedback of a closed loop system?
Negative feedback is a feedback where it is used in negative side in a closed loop system.Such as a inverting side feedback in op-amp.
Is automobile cruise control open or closed loop?
A cruise control is an example of a closed loop servo.
