Boots – shoes – and leggings
Patent
1979-07-25
1982-04-06
Smith, Jerry
Boots, shoes, and leggings
303 95, 303109, G06F 1520, B60T 808
Patent
active
043239692
ABSTRACT:
An apparatus for generating a reference signal in a brake control system stores a reference signal representative of a reference braking condition and compares this reference signal with a conditioned wheel signal. Depending on the outcome of the comparison, the reference signal is either updated to correspond to a reduced reference braking condition or ramped to correspond to an increased braking condition. The reference signal is not simultaneously ramped and updated, and is, therefore, precisely controlled. The amount by which the reference signal is ramped is a function of the past history of the reference signal: each time the reference signal is ramped the ramp rate is increased and each time the reference signal is updated the ramp rate is decreased. The disclosed apparatus generates the conditioned wheel signal from the wheel signal by averaging the maximum and minimum wheel signals in a preselected group and by then reducing this average by an amount proportional to the difference between the maximum and minimum wheel signals. In this way undesirable oscillations, such as those due to pitching of the wheel truck, are filtered out.
REFERENCES:
patent: 3729234 (1973-04-01), Hirzel
patent: 3737201 (1973-06-01), Okamoto et al.
patent: 3804470 (1974-04-01), Slavin et al.
patent: 4089564 (1978-05-01), berg
Crane & Co.
Smith Jerry
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