Method and arrangement for mechanical stabilization
OwnerMarkku Sarjalainventor
Life of this patent
Estimating the term…
Abstract
A method and a device are disclosed relating to the stabilization of mechanical bodies. The method is based on supporting the body to be stabilized at its mass center, whereby no acceleration in any direction causes a torque induced by the inertial forces in the body. The body thus maintains its position in relation to the earth gravity field, even if accelerations and various kinetic states were effective at the point of support. Inching of the body from the desired position is compensated by a slow control system using actuators functioning on a contact-free principle. As a particularly advantageous embodiment, the invention can be applied for stabilizing bodies attached to moving objects.
Claims22
A method for stabilizing a position of an antenna body having a mass center and being supported on a support base moving in relation to an earth gravity field, comprising the steps of:
- supporting said antenna body at its mass center located at a connection between said antenna body and said support base whereby any torque induced by inertial forces from accelerations on said antenna body is eliminated;
- measuring a kinetic state of at least one of said antenna body and said support base, and
- generating forces, based on said measuring step, and acting on a contact-free principle, to maintain said antenna body in said position by removing effects of destabilizing forces.
A method for stabilizing a position of an antenna body having a mass center and being supported on a support base moving in relation to an earth gravity field, comprising the steps of:
- supporting said antenna body at its mass center located at a gimbal joint connection between said antenna body and said support base whereby any torque induced by inertial forces from accelerations on said antenna body is eliminated,
- measuring a kinetic state of at least one of said antenna body and said support base by at least one sensor connected with said antenna body,
- conveying a measuring signal from said at least one sensor to a slow control system, having a response rate at least one decade lower than a maximum kinetic velocity corresponding to said kinetic state of said support base,
- forming a control signal in said slow control system, and
- generating forces with a set of devices, based on said control signal, to maintain said antenna body in said position by removing effects of destabilizing forces without said set of devices using physical contact with said support base to create said forces.
An apparatus for stabilizing a position of an antenna body having a mass center and being supported on a support base moving in relation to an earth gravity field, comprising:
- an antenna body supported at its mass center located at a connection between said antenna body and said support base whereby any torque induced by inertial forces from accelerations on said antenna body is eliminated,
- means for measuring a kinetic state of at least one of said antenna body and said support base, and
- a set of devices in communication with said measuring means, for generating forces, acting on a contact-free principle, to maintain said antenna body in said position by removing effects of destabilizing forces.
An apparatus for stabilizing a position of an antenna body having a mass center and being supported on a support base moving in relation to an earth gravity field, comprising
- an antenna body supported at its mass center located at a gimbal joint connection between said antenna body and said support base whereby any torque induced by inertial forces from accelerations on said antenna body is eliminated;
- means for measuring a kinetic state of at least one of said antenna body and said support base;
- a set of devices in communication with said measuring means, for generating forces to maintain said antenna body in said position by removing effects of destabilizing forces without said set of devices using physical contact with said support base to create said forces;
- and
- a slow control system, for receiving a measuring signal from said measuring means and for forming a control signal for operating said set of devices, said slow control system having a response rate at least one decade lower than a maximum kinetic velocity corresponding to said kinetic state of said support base.
Dependencies are inferred from the claim text.