Accelerator Module Uses Magnetic To Simulate Mechanical Acceleration Pedals
By using Hall IC’s to produce hysteretic pedal force characteristics, the structure of the non-contact revolution sensor is able to simulate the feeling of what the mechanical accelerator pedals produce.
The pedal force applied by the driver is countered by the pedal force hysteresis produced in the accelerator modules.
The accelerator module and the accelerator pedal are made from resin making them light weight.
In addition to the materials the enclosures are rated to a certain standard that requires the components to be protected from dust, moisture, and contamination.
Sensors are classified with an IP Code rating to protect them from the conditions they can be subjected to. This classification system established by the International Electrotechnical Commission (IEC) indicates the different degrees in which enclosures are to protect the sensors.
If there was a problem with the CTS Accelerator modules than it could possibly be a result of the IP rating being too low allowing for contamination to infiltrate the sensor causing it malfunction.
The ETC pedal module is replacing existing mechanical accelerator pedals and transparently substitutes a fast and accurate electronic signal for the conventional throttle cable. This advanced design reduces the number of components and associated wear, while providing the vehicle manufacturer with the capability to tune the vehicle drivability and performance by platform and model. CTS’ ETC pedal modules enable engine control calibration for improved fuel economy and emissions control, are compatible with multiple engine control units, and are equally efficient in gasoline and diesel applications. - CTS Awarded Electronic Accelerator Pedal Module Programs
More Helpful information:
http://www.tuneyfish.com/blog/cts-pedal-vs-denso-pedal-image-toyota-recall/
http://www.tuneyfish.com/blog/toyota-gas-pedal-101-cts-and-denso/
http://www.tuneyfish.com/blog/accelerator-module-uses-magnetic-to-simulate-mechanical-acceleration-pedals/
February 11th, 2010
If I may offer a polite correction / clarification here:
The accelerator pedals used here do not provide any physical magnetic feedback to the operator. The magnetic portion of the pedal is used by the sensor ONLY, all physical "feel" of the pedal is attained by a friction element within the assembly.
'Hysteresis' refers to the signal characteristics of the magnetic sensor and can be represented in a graphical format of pedal movement vs sensor response. We can see these on the CTI website ( http://www.ctscorp.com/automotive/pedal/specifica... ) , as well as the Denso website ( http://www.globaldensoproducts.com/em/gem/etcs/ac... ).