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US 5,009,450 AGranted
Vibration-absorber sensor for a semi-actively controlled chasis with a relative-velocity sensor and with electronics for processing their outputs
AssigneeAugust Bilstein GmbH & Co. KG
InventorsGerhard Herberg, Hans-Jurgen Hoffmann, Ludger Gesenhues, Zhen Huang, Reinhard Hoscher
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Abstract
The invention concerns a vibration-absorber sensor for the semi-actively controlled chassis of a motor vehicle wherein the relative velocity of the wheel mass to the body mass is measured with a sensor winding and a permanent magnet and processed in a circuit.
Claims6
A vibration-absorber sensor for measuring relative velocity between a motor vehicle body and axle, comprising:
- a wheel suspension;
- a variable or controllable hydraulic vibration absorber having an absorber cylinder at one end connected to said wheel suspension, said hydraulic vibration absorber having a moving piston rod at another end connected to said body and traveling in and out of said cylinder;
- a stationary housing open at one end and matching the shape of said cylinder and forced over said cylinder, said housing secured to said piston rod;
- an absorption valve and a processing circuit connected to said valve for varying or controlling said valve;
- said housing being made of anti-magnetic material and accommodating a sensor winding with leads extending outward;
- a magnet positioned at an untensioned end of said cylinder and on the surface of a cap of said cylinder;
- velocities of said piston including a distance-dependent and direction-dependent voltage signal in said sensor winding;
- said processing circuit supplying a signal for varying or controlling the absorption valve in accordance with the particular relative velocity of the piston.
5 more elements
Dependencies are inferred from the claim text.