LIST OF TABLES AND FIGURES

 

TABLES

 

1.1������ Previous Attempts at Marketing Robotic Arms

9

2.1������ 2000-2001 Gateway Coalition Team Members

10

8.1 ����� Power Consumption of Typical Appliances

50

10.1��� Control Modes

64

A.1����� Shoulder, Lower Arm, and Forearm Raw Materials Costs

67

A.2����� Shoulder, Lower Arm, and Forearm Component Costs

68

A.3����� Shoulder, Lower Arm, and Forearm Machining Costs

68

A.4����� Gripper Bill of Materials

69

A.5����� Controls Bill of Materials

70

A.6����� Summarized Cost of Arm

71

A.7����� Supplier Information

72

E.1����� Controller Mode Setup

94

E.2����� Router Board Output Hookup

106

F.1����� Motor Testing Data Table

115

AD.1�� Elbow Revision Bill of Materials

158

 

 

FIGURES

 

1.1������ 1996-1997 Final Design

2

1.2������ Ohio State�s 1997-1998 Initial Design

3

1.3������ 1997-1998 Final Design (Folded Position)

3

1.4������ 1997-1998 Final Design (Extended Position)

3

1.5������ 1998-1999 Initial Design

4

1.6������ 1998-1999 Final Design

5

1.7������ 1999-2000 Final Design

6

1.8������ 2000 Graduate Student Design

7

 

 

3.1 ����� Arm Mounted on Wheelchair Frame

13

3.2 ����� Home Position

13

3.3 ����� Reaching Below the Floor

13

3.4 ����� Same Position but Different Orientation

13

3.5 ����� Exploded View of Arm

15

3.6 ����� Shoulder Twist and Bend

14

3.7 ����� Elbow Bend

16

3.8������ Wrist Twist and Bend

16

 

 

4.1 ����� Rear Mounting Bracket

18

4.2 ����� Front and Rear Mounting Brackets

19

4.3 ����� Stationary Plate

19

4.4 ����� Complete Base with Motors

20

4.5 ����� Cutaway of Stationary Plate and Bearing Assembly

21

4.6 ����� Shoulder Twist Motor

22

4.7 ����� New Stationary Plate

23

4.8 ����� Bottom of Stationary Plate with and without the Twist Motor

23

4.9 ����� New Rear Mounting Bracket with Twist Motor

24

4.10 �� New Base Assembly

24

4.11 �� Drive Pulley

25

4.12 �� Twist Pulley

25

4.13 �� Cutaway of New Twist Bearing Assembly

26

4.14 �� Cutaway and Exploded View of Bearing Assembly

27

4.15 �� Complete Redesign Base Assembly

27

4.16��� Exploded View of Base Assembly

28

 

 

5.1 ����� Shoulder Bend Motor

29

5.2 ����� Left and Right Shoulder Mounting Brackets

30

5.3 ����� Shoulder Shaft

30

5.4 ����� Arm Plate from 1999-2000 Design

31

5.5 ����� Lower Arm Tube

31

5.6 ����� Preliminary and Final Shoulder Joint Designs

31

5.7 ����� Exploded View of Shoulder Joint

32

5.8 ����� Preliminary Elbow Motor without Encoder

33

5.9 ����� Elbow Motor Mounting Block

34

5.10 �� Elbow Motor Assembly

35

5.11 �� Elbow Motor Mounted at Angle

35

5.12 �� Elbow Shaft and Gear Assembly

36

5.13 �� 2000 Graduate Student Elbow Bracket

37

5.14��� New Elbow Bracket

37

 

 

6.1 ����� Preliminary Forearm Tubing with Offset Wrist Motors

38

6.2 ����� Final Forearm Tubing with Parallel Wrist Motors

39

6.3������ Wrist Pillow Block and Bearing

40

6.4������ Wrist Differential

40

 

 

7.1 ����� Fearon's Final Gripper Design

42

7.2 ����� Fearon's Solid Edge Model

43

7.3 ����� Closing Sequence of Underactuated System

43

7.4 ����� 1999-2000 Final Assembly

44

7.5 ����� Comparison of Old/New Motors

45

7.6 ����� Motor and Differential Plates

46

7.7 ����� Physical Closing Sequence of the Gripper

47

7.8������ Final Solid Edge Gripper Assembly

48

 

 

8.1������ Firestorm 18V Drill Motor and Accessories

53

8.2������ Motor Test Stand

54

8.3������ Shaft

54

8.4������ Test Setup Magtrol HD-710

54

8.5������ Power Input Wiring to Magtrol HD-710

55

8.6������ Damaged Dynamometer Control Board

56

8.7������ Drill Motor Torque-Speed Curve

57

9.1������ OOPic microcontroller

58

 

 

B.1����� Schematic for Torque Calculations

74

B.2����� Planetary Gear Train Free Body Diagram

77

 

 

C.1����� Kinematic Model

78

 

 

E.1����� Control Box

93

E.2����� Amplifier Box

94

E.3����� Basic Signal Flow Chart

95

E.4����� Control Circuit Schematic

96

E.5����� Control Module Circuit - Top

96

E.6����� Control Module Circuit - Bottom

97

E.7����� Router Board Schematic

101

E.8����� Router Board - Top & Bottom

102

E.9����� H-bridge - Top & Bottom

102

E.10��� H-bridge Schematic

103

E.11��� Resistor Block

104

E.12��� Control Box, Amplifier Box, H-bridge Stack

105

E.13�� Amplifier Box Internal Power Connector

106

 

 

AD.1�� Cutaway View of Redesigned Elbow Joint

157

AD.2�� Final Redesigned Elbow

157