Patent ID: 8177307
Filing Date: 2012-05-15
Classification: B60T

Abstract:
1. A braking system for a positioner of a medical imaging apparatus, the braking system comprising: a brake coil of the positioner coupled to a power supply of the medical imaging apparatus; a first control circuit of the positioner coupled to a top side of the brake coil of the positioner, a second control circuit of the positioner coupled to a bottom side of the brake coil of the positioner, a current sensor of the positioner coupled to at least one of the first control circuit of the positioner and the second control circuit of the positioner, wherein the first control circuit is configured to supplement the function of the second control circuit in the event of a single point failure of the second control circuit, wherein the second control circuit is configured to supplement the function of the first control circuit in the event of a single point failure of the first control circuit, wherein the first control circuit and the second control circuit are enabled or disabled in sequence respectively for brake release and brake apply operations.