Maurice Tutor

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Teaching Since: May 2017
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Education

  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 13 Jan 2018 My Price 9.00

Motion control

Motion control, which includes position or force control, is used in robotics and machining. Force control requires the designer to consider two phases: contact and noncontact motions. Figure P7.30 (a) is a diagram of a mechanical system for force control under contact motion. A force command, Fcmd(s), is the input to the system, while the output, F(s), is the controlled contact force.

In the figure a motor is used as the force actuator. The force output from the actuator is applied to the object through a force sensor. A block diagram representation of the system is shown in Figure P7.30 (b). K2 is velocity feedback used to improve the transient response.

The loop is actually implemented by an electrical loop (not shown) that controls the armature current of the motor to yield the desired torque at the output. Recall that Tm = Ktia (Ohnishi, 1996).

Find an expression for the range of K2 to keep the steady-state force error below 10% for ramp inputs of commanded force.

Answers

Maurice Tutor
(5)
Status NEW Posted 13 Jan 2018 09:01 PM My Price 9.00

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