Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/50567
Título: Assertiveness of a log length sensor allocated in different positions on the harvester head
Título(s) alternativo(s): Assertividade do sensor de comprimento de toras alocado em diferentes posições no cabeçote do harvester
Palavras-chave: Colheita florestal
Medição
Variabilidade
Exatidão
Forest harvest
Measurement
Variability
Accuracy
Data do documento: 2022
Editor: Universidade Federal do Paraná
Citação: SILVA, J. M. da et al. Assertiveness of a log length sensor allocated in different positions on the harvester head. Floresta, Curitiba, v. 52, n. 2, p. 294-303, Apr./June 2022. DOI: 10.5380/rf.v52 i2. 77469.
Resumo: Wood length variability can affect operational yield and productivity in harvesting and forest transport operations. Assertive lengths meet positive quality criteria for the product to cellulose factory delivered. Therefore, research is needed to assess assertiveness in measuring wood logs' length. Thus, the objective was to evaluate length sensor accuracy at different positions in the harvester head. The following treatments were defined: sensor coupled in measuring wheel without a protective piece (T1); sensor coupled in measuring wheel with protective piece (T2); sensor coupled in feed roller without protective piece (T3) and sensor coupled in feed roller with protective piece (T4). The study was carried in a eucalyptus plantation destined for the production of cellulose pulp and, through daily measurements of wood log length in the field, 8373 measurements were obtained. Data were submitted to ANAVA, mean tests (Tukey and Scott-Knott), Statistical Process Control (SPC) and frequency distribution. Treatments T1 and T3 presented average length corresponding to 6.46 m and 0.11 and 0.17 m standard deviation, respectively. T2 and T4 presented and average of 6.42 m and standard deviation equal to 0.12 and 0.16 m, respectively. treatment T1 presented assertive distribution frequencies, presenting 80% of the logs processed within the established limit (6.30 and 6.70 m) while T2, T3 and T4 presented 55%, 45% and 40%, respectively. It is concluded that the sensor coupled in measuring wheel and without the protective piece obtained greater accuracy in wood logs final length.
URI: http://repositorio.ufla.br/jspui/handle/1/50567
Aparece nas coleções:DEA - Artigos publicados em periódicos
DEG - Artigos publicados em periódicos

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
ARTIGO_Assertiveness of a log length sensor allocated in different positions on the harvester head.pdf571,8 kBAdobe PDFVisualizar/Abrir


Este item está licenciada sob uma Licença Creative Commons Creative Commons