论文信息 - Fault tolerant motor drives for powered wheelchairs

Fault tolerant motor drives for powered wheelchairs

A motor drive circuit consisting of the bridge and the interface unit is described. The behavior of current flow in the nonredundant bridge is shown. Failure modes in this bridge are described. In order to provide fault tolerance, a number of new designs using passive and active redundancy are presented and analyzed. An analysis of these designs is done. An interface unit for driving the high-side nFET is developed using the principles of bootstrapping. Calculations of the capacitance and resistance in this circuit are described. Finally, some test results using SPICE and some experimental results on the circuit implemented are presented.<<ETX>>

B. W. Johnson | R. K. Prasad | J. H. Aylor

[1] David L. Blackburn. Turn-Off Failure of Power MOSFET's , 1985, IEEE Transactions on Power Electronics.

[2] R. L. Wadsack,et al. Fault modeling and logic simulation of CMOS and MOS integrated circuits , 1978, The Bell System Technical Journal.

[3] Barry W. Johnson,et al. An operating system for a fault-tolerant multiprocessor controller , 1988, IEEE Micro.

[4] Barry W. Johnson,et al. Reliability and safety analysis in medical applications of computer technology , 1988, Proceedings of the Symposium on the Engineering of Computer-Based Medical.

[5] M. I. Valla,et al. Load circuit imposes driving constraints to internally protected power MOSFET's , 1985 .

[6] Barry W. Johnson,et al. A Fault-Tolerant Multiprocessor for Real-Time Control Applications , 1987, Other Conferences.