Android Muscle Options


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    Muscle Option       Abbreviation
1.  Airmuscle (rubber tube) AM
2.  Electric motors         EM
3.  Hydraulics              Hyd
4.  Linear Actuator         LA
5.  Muscle wire             MW
6.  Pneumatics              Pn

eu

7.  Servo motor             Sv
8.  Stepper motor           St
Option  Pro (Good)                  Con (bad)

AM      Works like pneumatics       Same problems as pneumatics + 
                                    slow reaction time and
                                    very low power.

EM      No valves or hoses          Big & heavy for same power as
                                    pneu or hyd.
                                    High power requirements,
                                    Heat problems.
                                    
Hyd     Most power for size         Valves are very expensive,
        High pressure available     Leaks could be big problem,
        Fast                        Very small cyl

inders
 NOT available
		
LA      Fairly strong               Way to big and heavy for 
                                    android applications.

MW      simple to operate           Very little power,
        no valves & hoses etc.      SUPER SLOW (1 Hz or less).
	
Pne

u
    Good power for size         Gases are compressible so
        Lightest for high power     control is unstable.
        fast                        High pressure NOT available.

Sv      small, cheap &              Very low power, 
        controller is cheap too     Not as fast as steppers or
        no valves or hoses etc.     cylinders

St      Small, fast                 Very low power unless geared. 
        no valves or hoses etc      expensive controllers
 

Rating scale:   H = high,heavy    M = Medium,   L = Low,Light   

                      F = fast,     M = Medium,    S = Slow    

                      Y = Required    N = Not required    V = very

Table of Comparison of Muscle Options

FactorAMEMHydLAMWPn eu ServStep
WeightMHHMLMLL
SizeS-ML-MM-HM-HSS-MSS
CostMMHM-HLMLL-M
Valves reqYNYNNYNN
Valve costL-M---H------L-M------
Valve weightL---H-----L------
Valve speedF---S-----F------
ControllerYYYYYYYY
Cntrlr costHMHMMHLH
Power (req)ML-MHHLMLL
Speed M-F MM-FM-FVSM-FMF
Lift loadMvarHvarLM-HLL-M
Overall costMM-HHHLMLM-H
  

      Comments? email: crwillis@androidworld.com