초록 ▼

A variable droop engine speed control system includes a proportional-integral-derivative (PID) engine speed controller as its central component. The PID controller includes the standard proportional, integral and derivative gains associated with the proportional, integral and derivative portions of

A variable droop engine speed control system includes a proportional-integral-derivative (PID) engine speed controller as its central component. The PID controller includes the standard proportional, integral and derivative gains associated with the proportional, integral and derivative portions of the controller, and further includes a droop gain associated only with the integral portion. The PID transfer function has a pole associated strictly with the droop gain such that a full range of droop may be provided by varying only the droop gain. Varying the droop gain affects only the steady-state frequency response of the PID

대표청구항 ▼

A method of controlling the engine speed of an internal combustion engine having a throttle position sensor associated therewith for sensing throttle position, an engine speed sensor for sensing actual engine speed, and a fuel system responsive to a fuel control signal to fuel the engine, the method

A method of controlling the engine speed of an internal combustion engine having a throttle position sensor associated therewith for sensing throttle position, an engine speed sensor for sensing actual engine speed, and a fuel system responsive to a fuel control signal to fuel the engine, the method comprising the steps of: (1) sensing throttle position and determining a desired engine speed therefrom; (2) sensing actual engine speed; (3) determining an error speed to be the difference between the desired engine speed and the actual engine speed; (4) generating a fuel control signal from the error speed that is a function of at least the magnitude, duration and rate of change of the error speed, the fuel control signal further being proportional to engine load such that the actual engine speed decreases as engine load increases; and (5) fueling the engine in accordance with the fuel control signal to thereby control the actual engine speed.