Electricity: motive power systems – Constant motor current – load and/or torque control
Patent
1988-10-06
1990-09-11
Shoop, Jr., William M.
Electricity: motive power systems
Constant motor current, load and/or torque control
318489, 318293, 180142, 180 79, G05B 1110, B62D 504
Patent
active
049565907
ABSTRACT:
A steering assembly for multiplying steering torque and motion applied from a steering wheel of a vehicle by fixed and selectively varying ratios, respectively. The applied steering torque and motion are coupled via an input shaft to a sun gear of a planetary gear set. Supplementary torque and steering motion are generated by a servo motor which is coupled to a ring gear of the planetary gear set via an irreversible differential planetary gear set. Rotational motion of the input shaft is determined and rotational motion of the servo motor is controlled as a selected function of the rotational motion of the input shaft. Actual rotational motion of the servo motor is measured and additional rotational motion of the servo motor is terminated if the actual rotational motion of the servo motor does not substantially match the selected rotational motion. A set of planetary gears mounted in a planetary carrier receives combined output torque and rotational motion from both the sun and ring gears. The planetary carrier is coupled to an output shaft which delivers the output torque and rotational position to a steering gear.
REFERENCES:
patent: 4629952 (1986-12-01), Shimizu
patent: 4639651 (1987-01-01), Shimizu
patent: 4687976 (1987-08-01), Shimizu
patent: 4688655 (1987-08-01), Shimizu
patent: 4715461 (1987-12-01), Shimizu
patent: 4727950 (1988-03-01), Shimizu et al.
patent: 4730686 (1988-03-01), Shimizu
patent: 4735271 (1988-04-01), Shimizu
patent: 4754829 (1988-07-01), Shimizu
patent: 4756376 (1988-07-01), Shimizu
patent: 4800975 (1989-01-01), Oshita et al.
patent: 4819170 (1989-04-01), Shimizu
Ip Paul
Shoop Jr. William M.
Techco Corporation
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