Sensory feedback system for an electro-hydraulically controlled system
AssigneeCaterpillar Inc.
InventorWilliam M. Barden
Life of this patent
Estimating the term…
Abstract
An apparatus for providing feedback to an operator relative to a force applied to a system is disclosed. The apparatus has a first magnet and a second magnet. The first magnet receives a signal indicative of the force applied to the system and generates a first magnetic field in response to the signal. The second magnet is disposed adjacent the first magnet and generates a second magnetic field that interacts with the first magnetic field to generate a magnetic force. An operator interface is operatively engaged with one of the first magnet and the second magnet such that the magnetic force acts on the operator interface.
Claims21
An apparatus for providing feedback to an operator relative to a force applied to a system, the apparatus comprising:
- a first magnet configured to receive a signal indicative of the force applied to the system and to generate a first magnetic field in response to the signal;
- a second magnet disposed adjacent the first magnet and configured to generate a second magnetic field that interacts with the first magnetic field to generate a magnetic force;
- and
- an operator interface operatively engaged with one of the first magnet and the second magnet, such that the magnetic force acts on the operator interface.
A method of controlling a hydraulic actuator having a first chamber and a second chamber, comprising:
- operating an operator interface to generate a flow of pressurized fluid to at least one of the first and second chambers;
- sensing a pressure representative of the pressure of the fluid in at least one of the first and second chambers;
- generating a signal based on the sensed pressure;
- and
- transmitting the signal to at least one of a first and second magnets to generate a magnetic force that acts on the operator interface.
A control system for a work machine, comprising:
- a hydraulic actuator having a first chamber and a second chamber and operable to exert a force;
- a directional control valve configured to control the rate and direction of fluid flow into the hydraulic actuator;
- a moveable operator interface configured to control the operation of the control valve;
- a first magnet operatively engaged with the operator interface;
- and
- a second magnet disposed adjacent to the first magnet, the first and second magnets generating a magnetic force having a magnitude related to the force exerted by the hydraulic actuator.
A control system for a work machine having a hydraulically operated implement, comprising:
- hydraulic actuation means for exerting a force to move the implement;
- means for controlling the movement of the hydraulic actuation means;
- a first magnetic means for generating a first magnetic field, the first magnetic means being operatively engaged with the controlling means;
- and
- a second magnetic means for generating a second magnetic field, the second magnetic means disposed adjacent to the first magnetic means such that the first and second magnetic fields interact to exert a magnetic force on the controlling means, wherein the magnetic force has a magnitude related to the force exerted by the hydraulic actuation means.
Dependencies are inferred from the claim text.