PATIENT SUPPORT APPARATUS WITH DRIVE WHEEL SPEED CONTROL
First Claim
1. A control system for a patient-support apparatus comprising,a user input device,a motor for driving a wheel over a floor,a controller including a processor and a memory device including instructions that, when executed by the processor, monitor the user input device to determine a speed input request from the user, calculate a speed output value based on a current speed input request and a previous speed output value, normalize the speed output value based on the current speed input request and the previous speed output value, and transmits the speed output value to the motor.
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Abstract
A control system for a self-propelled patient-support apparatus includes a controller that utilizes a power drive speed control algorithm to control the power output to a motor of a drive mechanism for driving the patient-support apparatus across a floor. The control algorithm normalizes a force input by a user on a user input device, the force indicative of a desired drive speed. The algorithm varies the responsiveness of the output to the drive mechanism based on the current operating conditions of the drive mechanism.
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Citations
20 Claims
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1. A control system for a patient-support apparatus comprising,
a user input device, a motor for driving a wheel over a floor, a controller including a processor and a memory device including instructions that, when executed by the processor, monitor the user input device to determine a speed input request from the user, calculate a speed output value based on a current speed input request and a previous speed output value, normalize the speed output value based on the current speed input request and the previous speed output value, and transmits the speed output value to the motor.
Specification