Patent application number | Description | Published |
20090050398 | VARIABLE EFFORT STEERING ACTUATOR - A magnetic actuator, comprising, an inner ring, an outer ring disposed around the inner ring, a first pair of inner teeth disposed on the inner ring that partially define a gap between the first pair of inner teeth having a first angular dimension, a second pair of inner teeth disposed on the inner ring that partially define a gap between the second pair of inner teeth having a second angular dimension, a first pair of outer teeth disposed on the outer ring that partially define a gap between the first pair of outer teeth having a third angular dimension and a second pair of outer teeth disposed on the outer ring that partially define a gap between the second pair of outer teeth having a fourth angular dimension. | 02-26-2009 |
20120209473 | ELECTRIC POWER STEERING CONTROL METHODS AND SYSTEMS - A control system for controlling a steering system is provided. The control system includes a first module that determines a hysteresis position based on handwheel velocity and handwheel torque. A second module selectively determines an assist curve based on the hysteresis position. A third module generates a final assist command based on the assist curve. | 08-16-2012 |
20120209475 | Electric Power Steering Control Methods And Systems Using Hysteresis Compensation - A control system for a steering system is provided. The control system includes a direction determination module, a position determination module, and a final command module. The direction determination module determines a change in a handwheel torque. The position determination module determines a position on a hysteresis loop. The position on the hysteresis loop depends on the change in the handwheel torque. The final command module determines a final assist value based on the position. The final command module generates an assist command. | 08-16-2012 |
20120232755 | DAMPING METHODS AND SYSTEMS FOR ELECTRIC POWER STEERING - A control system for controlling an electric power steering system is provided. The control system includes a first module that estimates a damping force based on an assist torque and a handwheel velocity. A second module generates a control signal based on the estimated damping force. | 09-13-2012 |
20150047919 | UNIVERSAL CARTRIDGE TORQUE OVERLAY ASSEMBLY - In one aspect of the invention, a power steering assist system is provided. The system includes a housing, an actuator assembly, a rotary valve assembly, a bearing assembly, a differential pressure transducer, and a coupler. The coupler includes a first end and a free second end, the free second end extending from the housing and configured to couple to a component of a steering gear system. | 02-19-2015 |
20160031481 | Wheel Imbalance Rejection Module - A control system and method for a hydraulic-power steering system of a vehicle including magnetic torque overlay (MTO) is provided. The control system and method minimize undesirable vibration in a hand wheel of the vehicle as a result of disturbance in its front road wheels (e.g., road-wheel imbalance). In the control system and method, a desired torque command is determined or generated. At least the desired torque command is passed to a disturbance-rejection module. The disturbance-rejection module modifies the desired torque command to minimize the vibration. | 02-04-2016 |
20160103034 | DUAL CHANNEL PRESSURE SENSOR WITH SINGLE CONNECTION ORIFICE - A dual channel pressure sensor is provided. The pressure sensor includes a baseplate extending from a housing. The baseplate has a first end, a second end, and a body extending between the first end and the second end. The first end defining a first inlet port and the body defining a second inlet port | 04-14-2016 |
20160107681 | STEERING SYSTEM WITH MAGNETIC TORQUE OVERLAY - A steering system with magnetic torque overlay of a vehicle is provided. The system comprises a hydraulic valve and differential-pressure transducer that monitors pressure created by the valve due to torque exerted by a driver of the vehicle in various directions on a steering wheel thereof. The transducer is fastened to a recirculating ball steering gear. A magnetic actuator generates an output of torque required from the steering gear for a maneuver of the steering wheel and applies the torque to the valve independently of input by the driver. A permanent magnet is located proximate the actuator. A control module calculates an appropriate amount of electric current and sends it to the actuator to generate the output torque. The torque is added to or subtracted from the system in any of the directions independently of the driver input by the pressure-monitoring and inputs from the vehicle into the control module. | 04-21-2016 |