Method and apparatus for compensating misalignments of a sensor system used in a vehicle dynamic control system

   
   

A control system (18) for an automotive vehicle (10) having a vehicle body includes a sensor system (16) having housing (52) oriented within the vehicle body. Positioned within the housing (52) are a roll angular rate sensor (31), a yaw angular rate sensor (30), a pitch angular rate sensor (32), a lateral acceleration sensor (27), a longitudinal acceleration sensor (28), and a vertical acceleration sensor (29). The vehicle (10) also has a safety system (38). The controller (26) determines a roll misalignment angle, a pitch misalignment angle and a yaw misalignment angle as a function of the sensor outputs of the roll rate, the pitch rate, the yaw rate, the lateral acceleration, the longitudinal acceleration and the vertical acceleration. The motion variables the vehicle along the vehicle body-fixed frames, including the roll rate, the pitch rate, the yaw rate, the lateral acceleration, the longitudinal acceleration and the vertical acceleration, are then compensated based on the detected sensor misalignments and the sensor outputs of the roll rate, the pitch rate, the yaw rate, the lateral acceleration, the longitudinal acceleration and the vertical acceleration. The controller (26) generates a control signal for controlling the safety system in response to the compensated roll rate, pitch rate, yaw rate, lateral acceleration, longitudinal acceleration and vertical acceleration.

Um sistema de controle (18) para um veículo automotriz (10) que tem um corpo do veículo inclui um sistema do sensor (16) que tem a carcaça (52) orientada dentro do corpo do veículo. São posicionados dentro da carcaça (52) um sensor angular da taxa do rolo (31), um sensor angular da taxa da guinada (30), um sensor angular da taxa do passo (32), um sensor lateral do acceleration (27), um sensor longitudinal do acceleration (28), e um sensor vertical do acceleration (29). O veículo (10) tem também um sistema de segurança (38). O controlador (26) determina um ângulo do misalignment do rolo, um ângulo do misalignment do passo e um ângulo do misalignment da guinada em função das saídas do sensor da taxa do rolo, da taxa do passo, da taxa da guinada, do acceleration lateral, do acceleration longitudinal e do acceleration vertical. As variáveis do movimento o veículo ao longo dos frames corpo-fixos do veículo, including a taxa do rolo, a taxa do passo, a taxa da guinada, o acceleration lateral, o acceleration longitudinal e o acceleration vertical, são compensadas então baseadas nos misalignments detectados do sensor e as saídas do sensor do rolo avaliam, a taxa do passo, a taxa da guinada, o acceleration lateral, o acceleration longitudinal e o acceleration vertical. O controlador (26) gera um sinal de controle para controlar o sistema de segurança em resposta à taxa compensada do rolo, à taxa do passo, à taxa da guinada, ao acceleration lateral, ao acceleration longitudinal e ao acceleration vertical.

 
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