F - Mech Eng,Light,Heat,Weapons – 02 – D
Patent
F - Mech Eng,Light,Heat,Weapons
02
D
341/66
F02D 29/04 (2006.01) F16H 61/46 (2006.01)
Patent
CA 1153448
77-358 APPLICATION OF: Charles R. Cornell FOR: ANTI-STALL CONTROL FOR ELECTRICAL HYDROSTATIC TRANSMISSION CONTROL SYSTEM A B S T R A C T A control system for a hydrostatic transmission is disclosed of the type including an engine driven fluid pump and a fluid motor. The control system includes a main control operable in response to an electrical com- mand signal to vary the displacement of the pump, and a command signal generator for generating the command sig- nal. The anti-stall control includes means for comparing electrical signals representative of engine speed and a reference speed, and generating an electrical anti-stall signal representative of the maximum percentage of commanded pump displacement which is permissible without causing the engine to drop below the reference speed. The anti-stall control includes means for electrically multiplying the anti-stall signal and the command signal, downstream of the shaping and rate limiting circuits. The invention provides a simple, inexpensive anti-stall control which can be adjusted to have the maximum possible gain (responsiveness) without inducing circuit instability.
328481
Corporation Eaton
Macrae & Co.
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