hw_05 - Department of Mechanical Engineering MICHIGAN STATE...

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Department of Mechanical Engineering MICHIGAN STATE UNIVERSITY ME457: Mechatronic System Modeling and Simulation hw_05.doc Page 1 Problem Set #5. (5-1) Print-head mechanism. A mechanical schematic of a print-head mechanism is shown in Figure 5-1.1, part (a). A bond graph model is shown in part (b). The effects and values to be considered are as follows: m3, mass of the pin m= 2.0 k1, positioning spring k1= 2.0 k2, effects of the platen and hard stop … see Figure 5-1.2. b5, friction effect of pin sliding in its sleeve b= 0.2 F4, driving force, applied magnetically … see discussion (Assume all values are SI and in compatible units). 1v Se I: m C: k1 C 2 R: b x=0 v m F4 k1 b (a) (b) Figure 5-1.1. Print-head mechanism (a) schematic (b) bond graph The motion variables of interest are the position of the pin, x, and the velocity of the pin, v. Assume that x=0 position corresponds to an applied force of zero, and is at the center of the motion range.
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Department of Mechanical Engineering MICHIGAN STATE UNIVERSITY ME457: Mechatronic System Modeling and Simulation hw_05.doc Page 2 (Problem 5-1 continued …)
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hw_05 - Department of Mechanical Engineering MICHIGAN STATE...

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