The invention relates to the technical field of load
estimation, and discloses a vehicle dynamic weighing and load
estimation method, which comprises the following steps that: firstly, a
signal acquisition unit acquires vehicle speed,
suspension tower top displacement and pavement space
pitch signals, and a pavement excitation
processing unit calculates a main excitation frequency and an
angular frequency according to the
pitch and the vehicle speed; the
modal and parameter unit extracts a compliance
frequency response function responded by the suspension, obtains a characteristic frequency, a bandwidth and an inverse
frequency response function through parameterization, and constructs a
frequency weighting function at the same time; the synthetic
observation unit generates a vibration mode ratio according to a
modal result and combines suspension displacement to form a synthetic observation
signal; the load
estimation unit calculates load
frequency domain estimation by using an inverse
frequency response function, a main excitation
angular frequency, a frequency weight and a static parameter; and the net
load unit performs
signal conversion, filtering and constraint
processing on the signal to obtain a net load signal.