Characteristics of stepper motors - stepper motor , Electrical Engineering

Characteristics of Stepper Motors

The main  characteristic of stepper  motors is torque  versus stepping or  pulse  rate. It give the  variation  of torque as a function of pulse rate ( Pulse  per second).

373_Characteristics of Stepper Motors.PNG

                                          Figure  Torque pulse  rate  characteristics  of a stepper  motors

When  increase in  pulse  rate or stepping  rate the  has less time to drive the  load from one position to next  hence the driving  torque  is decreased as shown in figure.

Torque pulse  rate characteristics  can be divided  into two  curves one is pull  in torque characteristics which shown  the maximum  pulse  rate at  which  motor  can start  synchronize  stop  or reverse for different values of load torque and another  one is pull out torque  characteristics which  shown  the maximum  pulse  rate at  which the  motor can  run for  different values  of load  torque  if motor is  already synchronized but  it cannot be  started  stopped  or reversed on that  particular input  pulse  rate.

These two  characteristics  are shown  in  figure  the characteristics  between  pull in  torque  and zero  pulse  rate  vertical line is  called the  start range  between  pull in torque  characteristics  and pull  out torque  stepping rate  gives the slew range. In the slew range the load follows the pulse rate or stepping rate  up to  pull out  torque characteristic. Beyond  a certain pulse  rate the  rotor con not follow  the command and  would  begin to miss pulses. Slew  range is  useful  for speed  control  and it is not suitable for positioning  control.

Posted Date: 4/3/2013 3:09:39 AM | Location : United States







Related Discussions:- Characteristics of stepper motors - stepper motor , Assignment Help, Ask Question on Characteristics of stepper motors - stepper motor , Get Answer, Expert's Help, Characteristics of stepper motors - stepper motor Discussions

Write discussion on Characteristics of stepper motors - stepper motor
Your posts are moderated
Related Questions
Bipolar Junction Transistor: Transistor construction: the emitter layer is heavily doped, the base is light doped and the collector is only lightly doped. Outer layer has wi

Pinch off Voltage: The current in N-JFET because of a small voltage V DS  is described by: I DSS = (2a) W/L (qN d μ n V DS ) In which 2a  = channel thickness

The assignment comprises two parts, a CPLD Design Exercise and a CPLD Design Project. The CPLD Design Exercise will enable you to acquire competance in programmable logic design

why BETA a current gain parameter of common emitter amplifier is temperature dependent?

With the help of neat diagrams illustrate the construction and working of various elements used in hydro-electric power plant. Compare hydro-electric power plant with other type

Q. What is the requirement of a hybrid in telephone networks? How does it work? Ans: Digital exchanges require receive and transmit signals on separate two-wire circuits. Th

Hybrid parameters (or) h - parameters:- If the input current that is denoted as i 1 and output Voltage that is denoted as V 2 are takes as independent variables, input v

What are loosely coupled systems? In loosely coupled systems every CPU may have its own bus control logic. The bus arbitration is handled by an external circuit, common to all

(a) Provide examples of intentional electromagnetic sources and examples of unintentional sources. (b) Describe the process of the formation of lightning. (c) Reduce each of

if contents of accumulator are all one''s then result would be zero so Z flag should be affected and same if all zero''s.....but here it is written that no flags is affected...