Design of a PZT-actuated proportional drum brake

Presents the design of a piezoelectric-ceramic (PZT)-stack-actuated brake that is similar to a magnetic particle brake in dynamic range, size, weight, and cost, while providing a significantly larger bandwidth and requiring significantly less electrical power for a given continuous torque output. The device is essentially a single-pad drum brake that is actuated with a PZT-stack actuator. A significant component of the design is the compliant-mechanism-based transmission utilized to transmit the PZT-stack actuation into brake pad motion. Following the device description, experimental data is presented to characterize the performance of the brake. The performance characteristics are subsequently compared to those of a commercially available magnetic particle brake of comparable size and weight.

[1]  J. Paros.  How to design flexure hinges , 1965 .

[2]  H. Verweij,et al.  Friction and wear behaviour of ceramic-hardened steel couples under reciprocating sliding motion , 1995 .

[3]  Kunitoshi Nishimura,et al.  A spring‐guided micropositioner with linearized subnanometer resolution , 1991 .

[4]  Michael Goldfarb,et al.  A flexure-based gripper for small-scale manipulation , 1999, Robotica.

[5]  Larry L. Howell,et al.  The topological synthesis of compliant mechanisms , 1996 .

[6]  I. Her,et al.  A Linear Scheme for the Displacement Analysis of Micropositioning Stages with Flexure Hinges , 1994 .

[7]  C. Mei,et al.  Analysis and design of multiple input flexible link mechanisms , 1970 .

[8]  J. M. Paros,et al.  Flexure Pivots to Replace Knife Edge and Ball Bearing , 1965 .

[9]  William K. Durfee,et al.  Design of a wearable orthosis for applying controlled dissipative loads to the lower limbs , 1993 .

[10]  William S. Harwin,et al.  Clinical potential and design of programmable mechanical impedances for orthotic applications , 1998, Robotica.

[11]  Michael Goldfarb,et al.  Minimum surface-effect microgripper design for force-reflective telemanipulation of a microscopic environment , 1996 .

[12]  W. Van Petegem,et al.  An EMG-based finite state approach for a microcomputer-controlled above-knee prosthesis , 1995, Proceedings of 17th International Conference of the Engineering in Medicine and Biology Society.

[13]  Carl D. Crane,et al.  Implementation of a six-degree-of-freedom manual controller with passive force feedback , 1995, Other Conferences.