Electric steering system
First Claim
Patent Images
1. An electric steering system comprising:
- a power source;
an electric motor for providing an auxiliary steering force;
an ultracapacitor selectively connectable to said power source, for charging said ultracapacitor, and to said motor, for discharging said ultracapacitor to drive said electric motor, said ultracapacitor having a capacitance greater than about 100 farads; and
a control circuit, responsive to at least one vehicle condition, for selecting between connection of said ultracapacitor to said power source for charging said ultracapacitor and connection of said ultracapacitor to said electric motor for discharging said ultracapacitor to drive said electric motor.
4 Assignments
0 Petitions
Accused Products
Abstract
An electric steering system (10) includes a power source (34) and an electric motor (28) which provides an auxiliary steering force in response to a large capacity capacitor (C1) being selectively connected to the power source (34), for charging the large capacity capacitor (C1), and to the motor (28), for discharging the large capacity capacitor (C1) to drive the electric motor (28) for providing the auxiliary steering force.
-
Citations
20 Claims
-
1. An electric steering system comprising:
-
a power source; an electric motor for providing an auxiliary steering force; an ultracapacitor selectively connectable to said power source, for charging said ultracapacitor, and to said motor, for discharging said ultracapacitor to drive said electric motor, said ultracapacitor having a capacitance greater than about 100 farads; and a control circuit, responsive to at least one vehicle condition, for selecting between connection of said ultracapacitor to said power source for charging said ultracapacitor and connection of said ultracapacitor to said electric motor for discharging said ultracapacitor to drive said electric motor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 16)
-
-
12. An electric steering system comprising:
-
a dc power source; an electric steering motor; an ultracapacitor having a capacitance greater than about 100 farads selectively connectable to said power source for charging said ultracapacitor, and to said motor for discharging said ultracapacitor to drive said electric motor; a sensor for sensing a vehicle condition and generating a signal indicative of said vehicle condition; and a control circuit, responsive to said sensor signal, for selecting between connection of said ultracapacitor to said power source for charging said ultracapacitor and connection of said ultracapacitor to said electric motor for discharging said ultracapacitor to said electric motor. - View Dependent Claims (13, 14, 15)
-
-
17. An electric steering system comprising:
-
a power source; an electric motor for providing an auxiliary steering force; an ultracapacitor selectively connectable to said power source, for charging said ultracapacitor, and to said motor, for discharging said ultracapacitor to drive said electric motor, said ultracapacitor having a capacitance greater than about 100 farads; and a control circuit, responsive to at least one vehicle condition, which selectively connects said ultracapacitor to said power source for charging said ultracapacitor and selectively connects said ultracapacitor to said electric motor for discharging said ultracapacitor to drive said electric motor. - View Dependent Claims (18, 19, 20)
-
Specification