1993
DOI: 10.1115/1.2919229
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A Classification of Robot Compliance

Abstract: The concept of compliant axes is developed from the compliance matrix eigenvalue problem. It is shown that the necessary and sufficient conditions for the existence of a compliant axis are two collinear eigenscrews with eigenvalues of equal magnitude and opposite sign. This leads to a new classification of compliance matrices based on the number of compliant axes. Selected matrices from the literature illustrate both the compliant axis concept and the classification.

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Cited by 59 publications
(20 citation statements)
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“…If neither r 2 nor r 3 can cross l 1 , t 2 t T 2 and t 3 t T 3 must always be on the same side of plane P 1 defined in Eq. (11). Thus, the given C cannot be realized at that endpoint location.…”
Section: Realization Conditions For Every Compliancementioning
confidence: 86%
See 1 more Smart Citation
“…If neither r 2 nor r 3 can cross l 1 , t 2 t T 2 and t 3 t T 3 must always be on the same side of plane P 1 defined in Eq. (11). Thus, the given C cannot be realized at that endpoint location.…”
Section: Realization Conditions For Every Compliancementioning
confidence: 86%
“…Screw theory [7][8][9][10][11] and Lie groups [12] have been used to analyze and characterize spatial linear elastic behavior (represented by a 6 × 6 symmetric stiffness matrix K or compliance matrix C).…”
Section: Related Workmentioning
confidence: 99%
“…A possible solution to this problem is the definition of a dimensionless or dimensionally consistent stiffness matrix as proposed for example in Refs. [24][25][26]. However, this would require the definition of a characteristic length L, whose choice is usually questionable but significantly affecting the results.…”
Section: Indices For Stiffness Performance Evaluationmentioning
confidence: 97%
“…A cross-sectional area of a wire E m elastic modulus of a wire E transformation matrix of a screw expressed in axis coordinates f intensity of an applied wrench F externally applied wrench G m shear modulus of a wire h vector from the mass centre to the centre of elasticity I area moment of inertia I 363 , 0 363 363 identity and zero matrices J mass moment of inertia k x , k y , k z principal stiffnesses k a , k b , k g principal stiffnesses K E stiffness matrix measured about the centre of elasticity body have been intensively investigated by Patterson and Lipkin [1,2]. Lipkin and Patterson [3] developed a geometrical decomposition method diagonalizing the stiffness matrix by a congruence transformation.…”
Section: Notationmentioning
confidence: 99%